AUDI A3 2010 – 1.9 l – Diesel engine (77 kW – unit injectors – 4 cylinder), engine code BXE . Wiring diagrams, Pin Connector, Location

Wiring Diagram AUDI A3 2010 - Cruise control system switch - ignition/starter switch

D	Ignition/starter switch
E45	Cruise control system switch
J527	Steering column electronics control unit
SB2	Fuse 2 on fuse holder B
T20b	20-pin connector, black (connector A)
T40	40-pin connector, black, on electronics box in engine compartment (connector J)
****	for models with cruise control system only

Wiring Diagram AUDI A3 2010 - Electronics box supply - terminal 50 voltage supply relay

Get access to all wiring diagrams of the car

A	Battery
B	Starter
J248	Diesel direct injection system control unit
J519	Onboard supply control unit
J527	Steering column electronics control unit
J682	Terminal 50 voltage supply relay
T8h	8-pin connector, black (connector F)
T11b	11-pin connector, black (connector A)
T12e	12-pin connector, black (connector G)
T20b	20-pin connector, black (connector A)
T94	94-pin connector, black (connector B)
B240	Positive connection 2 (50), in interior wiring harness
*	⇒ applicable Current Flow Diagram for models with battery in engine compartment
****	for models with cruise control system only

Wiring Diagram AUDI A3 2010 - Clutch position sender

Get access to all wiring diagrams of the car

G476	Clutch position sender
J248	Diesel direct injection system control unit
J519	Onboard supply control unit
SB22	Fuse 22 on fuse holder B
T16a	16-pin connector, black (connector E)
T40	40-pin connector, black, on electronics box in engine compartment (connector J)
T94	94-pin connector, black (connector B)

368	Earth connection 3, in main wiring harness
372	Earth connection 7, in main wiring harness

**	for models with automatic gearbox only
****	for models with manual gearbox only
#	is dropped from May 2007
##	applicable from May 2007

Wiring Diagram AUDI A3 2010 - Brake light switch - brake pedal switch

Get access to all wiring diagrams of the car

F	Brake light switch
F63	Brake pedal switch
J248	Diesel direct injection system control unit
J492	Four-wheel drive control unit
J519	Onboard supply control unit
SC2	Fuse 2 on fuse holder C
T6q	6-pin connector, black, near fuel gauge sender 2
T16a	16-pin connector, black (connector E)
T94	94-pin connector, black (connector B)
368	Earth connection 3, in main wiring harness
372	Earth connection 7, in main wiring harness
B277	Positive connection 1 (15a), in main wiring harness
B335	Connection 1 (54), in main wiring harness
*	for models with four-wheel drive only

Wiring Diagram AUDI A3 2010 - Terminal 15 voltage supply relay 2

Get access to all wiring diagrams of the car

J248	Diesel direct injection system control unit
J519	Onboard supply control unit
J681	Terminal 15 voltage supply relay 2
SB28	Fuse 28 on fuse holder B
SC1	Fuse 1 on fuse holder C
SC4	Fuse 4 on fuse holder C
T2t	2-pin connector, black (connector L)
T11b	11-pin connector, black (connector A)
T40	40-pin connector, black, on electronics box in engine compartment (connector J)
368	Earth connection 3, in main wiring harness
B273	Positive connection (15), in main wiring harness
##	applicable from November 2006

Wiring Diagram AUDI A3 2010 - Alternator

Get access to all wiring diagrams of the car

C	Alternator
J248	Diesel direct injection system control unit
J519	Onboard supply control unit
SA5	Fuse 5 on fuse holder A
SC27	Fuse 27 on fuse holder C
T2u	2-pin connector, brown, in front left engine compartment
T4	4-pin connector, black, in front left engine compartment
T8h	8-pin connector, black (connector F)
T94	94-pin connector, black (connector B)
368	Earth connection 3, in main wiring harness
B272	Positive connection (30), in main wiring harness
*	⇒ applicable Current Flow Diagram for models with battery in engine compartment
**	for models without air conditioning system only
***	for models with air conditioning system only

Wiring Diagram AUDI A3 2010 - Terminal 30 voltage supply relay

Get access to all wiring diagrams of the car

J179	Automatic glow period control unit
J248	Diesel direct injection system control unit
J317	Terminal 30 voltage supply relay
SB10	Fuse 10 on fuse holder B
SB13	Fuse 13 on fuse holder B
SB27	Fuse 27 on fuse holder B
T40	40-pin connector, black, on electronics box in engine compartment (connector J)
T94	94-pin connector, black (connector B)
85	Earth connection 1, in engine compartment wiring harness
368	Earth connection 3, in main wiring harness

D104	Positive connection 2 (30a), in engine compartment wiring harness
*	electronics box, relay location 2 - bridge

Wiring Diagram AUDI A3 2010 - Glow plugs - automatic glow period control unit

Get access to all wiring diagrams of the car

J179	Automatic glow period control unit
J248	Diesel direct injection system control unit
Q10	Glow plug 1
Q11	Glow plug 2
Q12	Glow plug 3
Q13	Glow plug 4
T10c	10-pin connector, black, in engine compartment
T14a	14-pin connector, black, near relay carrier electronics box
T94	94-pin connector, black (connector B)
368	Earth connection 3, in main wiring harness
**	not for models with engine codes BKC, BXE

Wiring Diagram AUDI A3 2010 - Fuel pump - fuel gauge sender

Get access to all wiring diagrams of the car

G	Fuel gauge sender
G6	Fuel system pressurisation pump
J17	Fuel pump relay
J49	Electric fuel pump 2 relay
J179	Automatic glow period control unit
J248	Diesel direct injection system control unit
T94	94-pin connector, black (connector B)
368	Earth connection 3, in main wiring harness
401	Earth connection (sender earth), in interior wiring harness
B322	Positive connection 8 (30a), in main wiring harness
B323	Positive connection 9 (30a), in main wiring harness
F37	Connection (auxiliary heater), in diesel direct injection system wiring harness
#	is dropped from November 2006
##	applicable from November 2006

Wiring Diagram AUDI A3 2010 - Auxiliary air heater - applicable from November 2006

Get access to all wiring diagrams of the car

SA4	Fuse 4 on fuse holder A
SA6	Fuse 6 on fuse holder A
SB15	Fuse 15 on fuse holder B
T20c	20-pin connector, black (connector A)
T40	40-pin connector, black, on electronics box in engine compartment (connector J)
T94	94-pin connector, black (connector B)
J162	Heater control unit
J248	Diesel direct injection system control unit
J359	Low heat output relay
J360	High heat output relay
Z35	Auxiliary heater element

B474	Connection 10, in main wiring harness
F32	Connection (glow plugs, coolant) in diesel direct injection system wiring harness
F37	Connection (auxiliary heater), in diesel direct injection system wiring harness
*	⇒ applicable Current Flow Diagram for models with battery in engine compartment
**	for models with diesel engines only
***	models with heater
#	is dropped from November 2006
##	applicable from November 2006

Wiring Diagram AUDI A3 2010 - Heater element for crankcase breather - intake manifold flap motor - air mass meter

Get access to all wiring diagrams of the car

G70	Air mass meter
J248	Diesel direct injection system control unit
N79	Heater element for crankcase breather
SB24	Fuse 24 on fuse holder B
T4d	4-pin connector, black, on radiator fan (front end)
T14	14-pin connector, black, near longitudinal member, front left
T40	40-pin connector, black, on electronics box in engine compartment (connector J)
T60	60-pin connector, black (connector A)
T94	94-pin connector, black (connector B)
V157	Intake manifold flap motor
131	Earth connection 2, in engine compartment wiring harness

B278	Positive connection 2 (15a), in main wiring harness
B321	Positive connection 7 (30a), in main wiring harness
*	⇒ applicable Current Flow Diagram: radiator fan control
**	for models without heater element only
***	for models with heater element only

Wiring Diagram AUDI A3 2010 - Temperature sender

Get access to all wiring diagrams of the car

G62	Coolant temperature sender
G81	Fuel temperature sender
G83	Radiator outlet coolant temperature sender
J248	Diesel direct injection system control unit
T14a	14-pin connector, black, near relay carrier electronics box
T60	60-pin connector, black (connector A)
***	for models with engine codes BKC, BXE only

Wiring Diagram AUDI A3 2010 - Unit injector valves

Get access to all wiring diagrams of the car

J248	Diesel direct injection system control unit
N240	Unit injector valve, No. 1 cyl.
N241	Unit injector valve, No. 2 cyl.
N242	Unit injector valve, No. 3 cyl.
N243	Unit injector valve, No. 4 cyl.
T8f	8-connector, black, in engine compartment
T10c	10-pin connector, black, in engine compartment
T60	60-pin connector, black (connector A)
D95	Connection (injectors), in engine compartment wiring harness
E48	Connection (injectors), in injection system wiring harness
**	not for models with engine codes BKC, BXE
***	for models with engine codes BKC, BXE only

Wiring Diagram AUDI A3 2010 - Solenoid valves

Get access to all wiring diagrams of the car

J248	Diesel direct injection system control unit
N18	Exhaust gas recirculation valve
N75	Charge pressure control solenoid valve
N213	Exhaust gas recirculation valve 2
SB23	Fuse 23 on fuse holder B
T6f	6-pin connector, black, on valve block
T14a	14-pin connector, black, near relay carrier electronics box
T40	40-pin connector, black, on electronics box in engine compartment (connector J)
T60	60-pin connector, black (connector A)
T94	94-pin connector, black (connector B)
D114	Connection 12, in engine compartment wiring harness
*	cross-section was reduced from 1.0 mm² to 0.75 mm², applicable from November 2006

Wiring Diagram AUDI A3 2010 - Engine speed sender - charge air pressure sender - hall sender

Get access to all wiring diagrams of the car

G28	Engine speed sender
G31	Charge air pressure sender
G40	Hall sender
G42	Intake air temperature sender
G79	Accelerator position sender
G185	Accelerator position sender 2
J248	Diesel direct injection system control unit
T6k	6-pin connector, black, near accelerator position sender
T14	14-pin connector, black, near longitudinal member, front left
T60	60-pin connector, black (connector A)
T94	94-pin connector, black (connector B)

Wiring Diagram AUDI A3 2010 - Drive train CAN bus - diagnosis

Get access to all wiring diagrams of the car

J248	Diesel direct injection system control unit
J533	Data bus diagnostic interface
J743	Mechatronic unit for double clutch gearbox
T16	16-pin connector, black, dash panel, driver side, bottom left (diagnostic connector)
T20d	20-pin connector, yellow (connector A)
T20e	20-pin connector, black (connector A)
T94	94-pin connector, black (connector B)
B383	Connection 1 (drive train CAN bus, high), in main wiring harness
B390	Connection 1 (drive train CAN bus, low), in main wiring harness
B444	Connection 1 (diagnosis), in main wiring harness
**	for models with automatic gearbox only

Wiring Diagram AUDI A3 2010 - Data bus diagnostic interface

Get access to all wiring diagrams of the car

J285	Control unit in dash panel insert
J533	Data bus diagnostic interface
K2	Alternator warning lamp
K31	Cruise control system warning lamp
K149	Engine electronics warning lamp
SB6	Fuse 6 on fuse holder B
SB12	Fuse 12 on fuse holder B
T20d	20-pin connector, yellow (connector A)
T32	32-pin connector, blue (connector A)
T40	40-pin connector, black, on electronics box in engine compartment (connector J)

369	Earth connection 4, in main wiring harness
401	Earth connection (sender earth), in interior wiring harness
B299	Positive connection 3 (30), in main wiring harness

Wiring Diagram AUDI A3 2010 - Oil pressure switch - oil level and oil temperature sender

Get access to all wiring diagrams of the car

F1	Oil pressure switch
G1	Fuel gauge
G3	Coolant temperature gauge
G169	Fuel gauge sender 2
G266	Oil level and oil temperature sender
J285	Control unit in dash panel insert
K3	Oil pressure warning lamp
K16	Reserve fuel warning lamp
K28	Coolant temperature and coolant shortage warning lamp
T6	6-pin connector, black, near longitudinal member, front left
T14	14-pin connector, black, near longitudinal member, front left
T32	32-pin connector, blue (connector A)
366	Earth connection 1, in main wiring harness
401	Earth connection (sender earth), in interior wiring harness

B281	Positive connection 5 (15a), in main wiring harness
*	for models with four-wheel drive only
***	for models with extended servicing intervals (ESI) only

AUDI A3 2010 Overview of control units

Overview of control units

Get access to all wiring diagrams of the car

q	Connector assignment

q	Connector assignment

q	not for models with US equipment

2 -

q	Connector assignment

q	Connector assignment

q	not for models with US equipment

q	Connector assignment

q	for models with 5-door models only

q	Connector assignment

q	Connector assignment

q	Connector assignment

q	for models with 5-door models only

q	Connector assignment

q	not for models with US equipment

q	Connector assignment

q	not for models with US equipment

q	Connector assignment

q	Connector assignment

q	Location, from model year 2010

q	Connector assignment, from model year 2004

q	Connector assignment, from model year 2010

Heater control unit -J162-

Location

13 -

q	Connector assignment

13 -

14 -

Auxiliary air heater control unit -J604-

Location

q	Connector assignment

q	not for models with US equipment

q	Connector assignment

16 -

q	Connector assignment

16 -

q	Connector assignment

q	Connector assignment

q	Connector assignment, 75 pin

q	Connector assignment, 84 pin

q	Connector assignment, 100 pin

Control unit with display for radio and navigation system -J503-

Location

20 -

Anti-theft and tilt system control unit -J529-

Location:

Behind the glove compartment-2-

Get access to all wiring diagrams of the car

AUDI A3 2010 Headlight range control, control unit J431

Headlight range control, control unit -J431-

Connector assignment.

AUDI A3 2010 Headlight range control, control unit J431

Get access to all wiring diagrams of the car

A -	Headlight range control, control unit -J431-

Connector:

B -	26-pin connector -T26a-

AUDI A3 2010 Front passenger seat heating control unit J727

Front passenger seat heating control unit -J727-

Connector assignment.

AUDI A3 2010 Front passenger seat heating control unit J727

Get access to all wiring diagrams of the car

-	Front passenger seat heating control unit -J727-

Connector:

A -	6-pin connector -T6p-

AUDI A3 2010 Sliding sunroof adjustment control unit J245

Sliding sunroof adjustment control unit -J245-

Connector assignment.

AUDI A3 2010 Sliding sunroof adjustment control unit J245

Get access to all wiring diagrams of the car

-	Sliding sunroof adjustment control unit -J245-

Connector:

A -	6-pin connector -T6b-

B -	6-pin connector -T6t-

AUDI A3 2010 NOx sensor control unit J583

NOx sensor control unit -J583-

Location:

on underbody, near NOx catalytic converter

AUDI A3 2010 NOx sensor control unit J583

Get access to all wiring diagrams of the car

AUDI A3 2010 Rear left door control unit J388 / Rear right door control unit J389

Rear left door control unit -J388-/Rear right door control unit -J389-

Location:

in rear door

AUDI A3 2010 Rear left door control unit J388 / Rear right door control unit J389

Get access to all wiring diagrams of the car

Connector assignment.

Get access to all wiring diagrams of the car

A -	Rear left door control unit -J388-

Connector:

B -	32-pin connector -T32e-

C -	16-pin connector(Vacant)

D -	20-pin connector -T20n-

Connector assignment.

Get access to all wiring diagrams of the car

A -	Rear right door control unit -J389-

Connector:

B -	32-pin connector -T32f-

C -	16-pin connector(Vacant)

D -	20-pin connector -T20o-

AUDI A3 2010 Control unit in dash panel insert J285

Control unit in dash panel insert -J285-

Connector assignment.

AUDI A3 2010 Control unit in dash panel insert J285

Get access to all wiring diagrams of the car

-	Control unit in dash panel insert -J285-

Connector:

A -	32-pin connector -T32-

AUDI A3 2010 Fuel pump control unit J538

Fuel pump control unit -J538-

Connector assignment.

AUDI A3 2010 Fuel pump control unit J538

Get access to all wiring diagrams of the car

A -	Fuel pump control unit -J538-

Connector:

B -	10-pin connector -T10b-

AUDI A3 2010 Driver seat heating control unit J726

Driver seat heating control unit -J726-

Connector assignment.

AUDI A3 2010 Driver seat heating control unit J726

Get access to all wiring diagrams of the car

-	Driver seat heating control unit -J726-

Connector:

A -	6-pin connector -T6o-

AUDI A3 2010 Steering column electronics control unit J527

Steering column electronics control unit -J527-

Connector assignment.

AUDI A3 2010 Steering column electronics control unit J527

Get access to all wiring diagrams of the car

A -	Steering column electronics control unit -J527-

B -	4-pin connector(Airbag mounting)

C -	10-pin connector(Cruise control system and turn signal support)

D -	20-pin connector -T20b-

E -	4-pin connector -T4n-

F -	12-pin connector(Ignition/starter switch and ignition key withdrawal lock support)

G -	8-pin connector(Wiper support, interval potentiometer and multifunction system)

H -	10-pin connector(Steering angle sensor support)

I -	10-pin connector(Coil connector support)

AUDI A3 2010 Driver door control unit J386

Driver door control unit -J386-

Connector assignment.

AUDI A3 2010 Driver door control unit J386

Get access to all wiring diagrams of the car

A -	Driver door control unit -J386-

Connector:

B -	32-pin connector -T32a-

C -	16-pin connector -T16b-

D -	20-pin connector -T20f-

AUDI A3 2010 Onboard supply control unit J519

Onboard supply control unit -J519-

Connector assignment.

AUDI A3 2010 Onboard supply control unit J519

Get access to all wiring diagrams of the car

-	Onboard supply control unit -J519-

Connector:

A -	11-pin connector -T11b-

B -	12-pin connector -T12c-

C -	12-pin connector -T12d-

D -	11-pin connector -T11c-

E -	16-pin connector -T16a-

F -	8-pin connector -T8h-

G -	12-pin connector -T12e-

H -	12-pin connector

I -	2-pin connector -T2b-

J -	6-pin connector -T6h-

K -	10-pin connector -T10d-

L -	2-pin connector -T2t-

AUDI A3 2010 Onboard supply control unit J519

Connector assignment.

Get access to all wiring diagrams of the car

-	Onboard supply control unit -J519-

Connector:

A -	52-pin connector -T52a-

B -	52-pin connector -T52b-

C -	52-pin connector -T52c-

AUDI A3 2010 Heater control unit J65 / Heater control unit J162

Heater control unit -J65-/Heater control unit -J162-

Location:

in centre console

AUDI A3 2010 Heater control unit J65 / Heater control unit J162

Get access to all wiring diagrams of the car

AUDI A3 2010 Climatronic control unit J255

Connector assignment.

AUDI A3 2010 Climatronic control unit J255

Get access to all wiring diagrams of the car

-	Climatronic control unit -J255-

Connector:

A -	12-pin connector -T12f-

B -	20-pin connector -T20j-

C -	16-pin connector -T16e-

D -	16-pin connector -T16d-

AUDI A3 2010 data bus diagnostic interface J533

data bus diagnostic interface -J533-

Connector assignment.

AUDI A3 2010 data bus diagnostic interface J533

Get access to all wiring diagrams of the car

A -	data bus diagnostic interface -J533-

Connector:

B -	20-pin connector -T20d-

AUDI A3 2010 Fresh air blower control unit J126

Fresh air blower control unit -J126-

Location:

Under glove compartment, onfresh air blower -V2-

AUDI A3 2010 Fresh air blower control unit J126

Get access to all wiring diagrams of the car

AUDI A3 2010 Front passenger door control unit J387

Connector assignment.

AUDI A3 2010 Front passenger door control unit J387

Get access to all wiring diagrams of the car

A -	Front passenger door control unit -J387-

Connector:

B -	32-pin connector -T32b-

C -	16-pin connector -T16c-

D -	20-pin connector -T20g-

AUDI A3 2010 Airbag control unit J234

Airbag control unit -J234-

Connector assignment.

Get access to all wiring diagrams of the car

A -	Airbag control unit -J234-

Connector:

B -	75-pin connector -T75-

Connector assignment.

Get access to all wiring diagrams of the car

-	Airbag control unit -J234-

Connector:

A -	84-pin connector -T84-

A -	84-pin connector -T84a-

Connector assignment.

Get access to all wiring diagrams of the car

-	Airbag control unit -J234-

Connector:

A -	100-pin connector -T100-

A -	100-pin connector -T100a-

AUDI A3 2010 Auxiliary air heater control unit J604

Auxiliary air heater control unit -J604-

Connector assignment.

AUDI A3 2010 Auxiliary air heater control unit J604

Get access to all wiring diagrams of the car

-	Auxiliary air heater control unit -J604-

Connector:

A -	4-pin connector -T4l-

AUDI A3 2010 Radio R / Control unit with display for radio and navigation system J503 (RNS-low)

Radio -R-/Control unit with display for radio and navigation system -J503- (RNS-low)

Location:

In centre console -arrow-

AUDI A3 2010 Radio R / Control unit with display for radio and navigation system J503 (RNS-low)

Get access to all wiring diagrams of the car

AUDI A3 2010 Navigation operating electronics control unit J402 (RNS-E)

Navigation operating electronics control unit -J402- (RNS-E)

Location:

in centre console

AUDI A3 2010 Navigation operating electronics control unit J402 (RNS-E)

Get access to all wiring diagrams of the car

AUDI A3 2010 CD changer R41

CD changer -R41-

Location:

In glove box -arrow-

Get access to all wiring diagrams of the car

AUDI A3 2010 Electronically controlled damping control unit J250

Connector assignment.

AUDI A3 2010 Electronically controlled damping control unit J250

Get access to all wiring diagrams of the car

-	Electronically controlled damping control unit -J250-

Connector:

A -	47-pin connector -T47-

AUDI A3 2010 Tyre pressure monitor control unit J502

Tyre pressure monitor control unit -J502-

Connector assignment.

AUDI A3 2010 Tyre pressure monitor control unit J502

Get access to all wiring diagrams of the car

-	Tyre pressure monitor control unit -J502-

Connector:

A -	20-pin connector -T20q-

AUDI A3 2010 Connection for external audio source R199

Connection for external audio source -R199-

Fitting location

In glove compartment

AUDI A3 2010 Connection for external audio source R199

Get access to all wiring diagrams of the car

A -	Connection for external audio source -R199-

B -	12-pin connector -T12y-

AUDI A3 2010 Voltage stabiliser J532

AUDI A3 2010 Overview of fuses

Overview of fuses

Get access to all wiring diagrams of the car

q	Position of fuses on main fuse holder, electronics box low, from model year 2006

q	Position of fuses on main fuse holder, electronics box low, from model year 2007

q	Location on main fuse holder, electronics box low, from November 2008

q	Position of fuses on main fuse holder, electronics box low, from November 2008

q	Location main fuse holder, electronics box high

q	Position of fuses on main fuse holder, electronics box high, from model year 2004

q	Position of fuses on main fuse holder, electronics box high, from model year 2005

q	Position of fuses on main fuse holder, electronics box high, from model year 2006

q	Position of fuses, electronics box low, from model year 2006

q	Position of fuses, electronics box low, from model year 2007

q	Fitting location of E-box high

q	Position of fuses, electronics box high, from model year 2004

q	Position of fuses, electronics box high, from model year 2006

q	Position of fuses, electronics box high, from model year 2007

q	Position of fuses, from model year 2004

q	Position of fuses, from model year 2006

q	Position of fuses, from model year 2007

q	Position of fuses on main fuse box, from model year 2004

q	Position of fuses on main fuse box, from model year 2006

5 -

Main fuse holder: Location fuse holder A -SA- on electronics box low, from model year 2006

Main Supply Connection:

Get access to all wiring diagrams of the car

M -	Screw connection M (terminal 30)

AUDI A3 2010 Position of fuses electronics box low, from model year 2006

Position of fuses electronics box low, from model year 2006

Current Flow Diagram designation	Nominal value		Function/component	Terminal
Fuse 1 on fuse holder A -SA1-	150 A	-	Alternator -C- (70 A) Alternator -C- (90 A) Alternator -C- (110 A) Alternator -C- (120 A)	30
	200 A	-	Alternator -C- (140 A)	30
Fuse 2 on fuse holder A -SA2-	80 A	-	Power steering control unit -J500-	30
Fuse 3 on fuse holder A -SA3-	50 A	-	Radiator fan control unit -J293- Radiator fan thermal switch -F18- Radiator fan -V7-	30
Fuse 4 on fuse holder A -SA4-	80 A	-	Supply for the fuses: -SC12- up to -SC17-, -SC19-, -SC22- up to -SC27-, -SC28-, -SC38- is dropped from November 2005	30
Fuse 5 on fuse holder A -SA5-	80 A	-	Supply for the fuses: -SC12- up to -SC17-, -SC19-, -SC22- up to -SC27-, -SC28-, -SC38- applicable from November 2005	30
Fuse 5 on fuse holder A -SA5-	100 A	-	Auxiliary air heater control unit -J604- is dropped from November 2005	30
Fuse 6 on fuse holder A -SA6-	100 A	-	Auxiliary air heater control unit -J604- applicable from November 2005	30
Fuse 7 on fuse holder A -SA7-	50 A	-	Option doctor	30
	80 A	-	Option police	30

AUDI A3 2010 Position of fuses electronics box low, from model year 2007

Position of fuses electronics box low, from model year 2007

Current Flow Diagram designation	Nominal value		Function/component	Terminal
Fuse 1 on fuse holder A -SA1-	150 A	-	Alternator -C- (70 A) Alternator -C- (90 A) Alternator -C- (110 A) Alternator -C- (120 A)	30
	200 A	-	Alternator -C- (140 A)	30
Fuse 2 on fuse holder A -SA2-	80 A	-	Power steering control unit -J500-	30
Fuse 3 on fuse holder A -SA3-	50 A	-	Radiator fan control unit -J293- Radiator fan thermal switch -F18- Radiator fan -V7-	30
Fuse 4 on fuse holder A -SA4-	40 A	-	Low heat output relay -J359- applicable from November 2006	30
Fuse 5 on fuse holder A -SA5-	80 A	-	B272 Positive connection (30), in main wiring harness Supply for the fuses: -SC12- up to -SC17-, -SC22- up to -SC27-, -SC28-, -SC38-, -SC43-	30
Fuse 6 on fuse holder A -SA6-	100 A	-	Auxiliary air heater control unit -J604- is dropped from November 2006	30
Fuse 6 on fuse holder A -SA6-	80 A	-	High heat output relay -J360- applicable from November 2006	30
Fuse 7 on fuse holder A -SA7-	50 A	-	Option doctor	30
	80 A	-	Option police	30
	30 A	-	Electronically controlled damping control unit -J 250- applicable from May 2008	30

AUDI A3 2010 Main fuse holder: Location fuse holder A SA on electronics box low, from November 2008

Main fuse holder: Location fuse holder A -SA- on electronics box low, from November 2008

Main Supply Connection:

Get access to all wiring diagrams of the car

M -	Screw connection M (terminal 30)

AUDI A3 2010 Position of fuses in electronics box low, from November 2008

Position of fuses in electronics box low, from November 2008

Current Flow Diagram designation	Nominal value		Function/component	Terminal
Fuse 1 on fuse holder A -SA1-	150 A	-	Alternator -C- (70 A) Alternator -C- (90 A) Alternator -C- (110 A) Alternator -C- (120 A)	30
	200 A	-	Alternator -C- (140 A)	30
Fuse 2 on fuse holder A -SA2-	80 A	-	Power steering control unit -J500-	30
Fuse 3 on fuse holder A -SA3-	50 A	-	Radiator fan control unit -J293- Radiator fan thermal switch -F18- Radiator fan -V7-	30
Fuse 4 on fuse holder A -SA4-	80 A	-	High heat output relay -J360-	30
Fuse 5 on fuse holder A -SA5-	80 A	-	B272 Positive connection (30), in main wiring harness Supply for the fuses: -SC12- up to -SC17-, -SC22- up to -SC27-, -SC28-, -SC38-, -SC43-	30
Fuse 6 on fuse holder A -SA6-	40 A	-	Low heat output relay -J359-	30
Fuse 7 on fuse holder A -SA7-	50 A	-	Option doctor is dropped from May 2009	30
	50 A	-	Option doctor or police applicable from May 2009	30
	80 A	-	Option police is dropped from May 2009	30
	30 A	-	Electronically controlled damping control unit -J 250-	30

AUDI A3 2010 Main fuse holder: Location fuse holder A SA on electronics box high

Main fuse holder: Location fuse holder A -SA- on electronics box high

Main Supply Connection:

Get access to all wiring diagrams of the car

1 -	Screw connection A (terminal 30)

2 -	Screw connection M (terminal 30)

3 -	Screw connection L (terminal 30)

AUDI A3 2010 Position of fuses electronics box high, from model year 2004

Position of fuses electronics box high, from model year 2004

No.		Current Flow Diagram designation	Nominal value		Function/component	Terminal
4	-	Fuse 1 on fuse holder A -SA1-	150 A	-	Alternator -C- (70 A) Alternator -C- (90 A) Alternator -C- (110 A) Alternator -C- (120 A)	30
4	-	Fuse 1 on fuse holder A -SA1-	200 A	-	Alternator -C- (140 A)	30
5	-	Fuse 2 on fuse holder A -SA2-	80 A	-	Power steering control unit -J500-	30
6	-	Fuse 3 on fuse holder A -SA3-	80 A	-	Radiator fan control unit -J293-	30
7	-	Fuse 4 on fuse holder A -SA4-	80 A	-	Window regulator single fuse -S37- Supply for the fuses: -SC22- up to -SC27- for models with battery in luggage compartment only	30
8	-	Fuse 5 on fuse holder A -SA5-	100 A	-	Auxiliary air heater control unit -J604-	30
9	-	Fuse 6 on fuse holder A -SA6-	50 A	-	Supply for the fuses: -SC12- up to -SC17-, -SC44-, -SC45- for models with battery in luggage compartment only	30
			80 A	-	Window regulator single fuse -S37- Supply for the fuses: -SC12- up to -SC17-, -SC22- up to -SC27- for models with battery in engine compartment only	30

AUDI A3 2010 Position of fuses electronics box high, from model year 2005

Position of fuses electronics box high, from model year 2005

No.		Current Flow Diagram designation	Nominal value		Function/component	Terminal
4	-	Fuse 1 on fuse holder A -SA1-	150 A	-	Alternator -C- (70 A) Alternator -C- (90 A) Alternator -C- (110 A) Alternator -C- (120 A)	30
4	-	Fuse 1 on fuse holder A -SA1-	200 A	-	Alternator -C- (140 A)	30
5	-	Fuse 2 on fuse holder A -SA2-	80 A	-	Power steering control unit -J500-	30
6	-	Fuse 3 on fuse holder A -SA3-	80 A	-	Radiator fan control unit -J293-	30
7	-	Fuse 4 on fuse holder A -SA4-	80 A	-	Window regulator single fuse -S37- Window regulator single fuse 2 -S280- Supply for the fuses: -SC22- up to -SC27- for models with battery in luggage compartment only	30
8	-	Fuse 5 on fuse holder A -SA5-	100 A	-	Auxiliary air heater control unit -J604-	30
9	-	Fuse 6 on fuse holder A -SA6-	50 A	-	Supply for the fuses: -SC12- up to -SC17-, -SC19-, -SC44-, -SC45- for models with battery in luggage compartment only	30
			80 A	-	Window regulator single fuse -S37- Window regulator single fuse 2 -S280- Supply for the fuses: -SC12- up to -SC17-, -SC19-, -SC22- up to -SC27- for models with battery in engine compartment only	30

AUDI A3 2010 Position of fuses electronics box high, engine codes AXX, BWA, BPY, BHZ, BZC, CDLA, CDLC, from model year 2006

Position of fuses electronics box high, engine codes AXX, BWA, BPY, BHZ, BZC, CDLA, CDLC, from model year 2006

No.		Current Flow Diagram designation	Nominal value		Function/component	Terminal
4	-	Fuse 1 on fuse holder A -SA1-	150 A	-	Alternator -C- (70 A) Alternator -C- (90 A) Alternator -C- (110 A) Alternator -C- (120 A)	30
			200 A	-	Alternator -C- (140 A)
5	-	Fuse 2 on fuse holder A -SA2-	80 A	-	Power steering control unit -J500-	30
6	-	Fuse 3 on fuse holder A -SA3-	50 A	-	Radiator fan control unit -J293-	30
7	-	Fuse 4 on fuse holder A -SA4-	80 A	-	Supply for the fuses: -SC12- up to -SC17-, -SC19-, -SC22- up to -SC27-, -SC28-, -SC38- is dropped from November 2005	30
7	-	Fuse 4 on fuse holder A -SA4-	80 A	-	Supply for the fuses: -SC12- up to -SC17-, -SC22- up to -SC27-, -SC28-, -SC38-, -SC43- applicable from May 2009	30
8	-	Fuse 5 on fuse holder A -SA5-	80 A	-	Supply for the fuses: -SC12- up to -SC17-, -SC19-, -SC22- up to -SC27-, -SC28-, -SC38- applicable from November 2005 is dropped from May 2006	30
8	-	Fuse 5 on fuse holder A -SA5-	80 A	-	Supply for the fuses: -SC12- up to -SC17-, -SC22- up to -SC27-, -SC28-, -SC38-, -SC43- applicable from May 2006 is dropped from May 2009	30
9	-	Fuse 6 on fuse holder A -SA6-	-	-	Not assigned	-
10	-	Fuse 7 on fuse holder A -SA7-	50 A	-	Option doctor is dropped from May 2009	30
			50 A		Option doctor or police applicable from May 2009
			80 A		Option police is dropped from May 2009
			30 A		Electronically controlled damping control unit -J 250- applicable from May 2008

AUDI A3 2010 Position of fuses electronics box high, engine codes BMJ, BUB, CBRA, from model year 2006, CEPA, CEPB from model year 2011

Location fuse holder B -SB- on electronics box low, in left of engine compartment

Fuse colours

AUDI A3 2010 Position of fuses electronics box high, engine codes BMJ, BUB, CBRA, from model year 2006, CEPA, CEPB from model year 2011

Get access to all wiring diagrams of the car

50A - red

40A - orange

30A - light-green

25A - natural (white)

20 A - yellow

15A - light blue

10A - red

7.5A - brown

5A - light-brown

3 A - purple

AUDI A3 2010 Position of fuses electronics box low, from model year 2006

Position of fuses electronics box low, from model year 2006

No.		Current Flow Diagram designation	Nominal value		Function/component	Terminal
F1	-	Fuse 1 on fuse holder B -SB1-	20 A	-	Convenience system central control unit -J393-	30
F2	-	Fuse 2 on fuse holder B -SB2-	5 A	-	Steering column electronics control unit -J527-	30
F3	-	Fuse 3 on fuse holder B -SB3-	5 A	-	Onboard supply control unit -J519-	30
F4	-	Fuse 4 on fuse holder B -SB4-	30 A	-	ABS control unit -J104- ABS hydraulic unit -N55-	30
F5	-	Fuse 5 on fuse holder B -SB5-	15 A	-	Mechatronic unit for dual clutch gearbox -J743-	30
F6	-	Fuse 6 on fuse holder B -SB6-	5 A	-	Control unit in dash panel insert -J285-	30
F7	-	Not assigned	-	-
F8	-	Fuse 8 on fuse holder B -SB8-	15 A	-	Radio -R- Navigation operating electronics control unit -J402-	30
F9	-	Fuse 9 on fuse holder B -SB9-	5 A	-	Navigation system with CD drive control unit -J401- Navigation system tuner for TV -J415- Satellite radio -R146- Telephone transmitter and receiver unit -R36- Aerial amplifier for mobile telephone -R86-	30
F10	-	Fuse 10 on fuse holder B -SB10-	5 A	-	Motronic control unit -J220- Motronic current supply relay -J271- Terminal 30 voltage supply relay -J317-	30
F11	-	Fuse 11 on fuse holder B -SB11-	20 A	-	Auxiliary heater control unit -J364-	30
F12	-	Fuse 12 on fuse holder B -SB12-	5 A	-	Data bus diagnostic interface -J533-	30
F13	-	Fuse 13 on fuse holder B -SB13-	30 A	-	Engine control unit -J623- Diesel direct injection system control unit -J248-	87
			25 A	-	Motronic control unit -J220- Engine control unit -J623-
F14	-	Fuse 14 on fuse holder B -SB14-	20 A	-	Ignition coil 1 with output stage -N- Ignition coil 2 -N128- Ignition coil 1 with output stage -N70- Ignition coil 2 with output stage -N127- Ignition coil 3 with output stage -N291- Ignition coil 4 with output stage -N292-	87
F15	-	Fuse 15 on fuse holder B -SB15-	15 A	-	Lambda probe 1 heater after catalytic converter -Z29- Lambda probe 2 heater after catalytic converter -Z30- Lambda probe 3 heater after catalytic converter -Z64-	87
F15	-	Fuse 15 on fuse holder B -SB15-	10 A	-	Lambda probe 1 heater after catalytic converter -Z29-	87
F15	-	Fuse 15 on fuse holder B -SB15-	5 A	-	Automatic glow period control unit -J179- Fuel pump relay -J17-	87
F16	-	Fuse 16 on fuse holder B -SB16-	30 A	-	ABS control unit -J104- ABS hydraulic pump -V64-	30
F17	-	Fuse 17 on fuse holder B -SB17-	15 A	-	High tone horn -H2- Low tone horn -H7-	30
F18	-	Fuse 18 on fuse holder B -SB18-	30 A	-	Amplifier -R12- Amplifier with bass loudspeaker, on left in luggage compartment -R44-	30
F19	-	Fuse 19 on fuse holder B -SB19-	30 A	-	Wiper motor control unit -J400-	30
F21	-	Fuse 21 on fuse holder B -SB21-	15 A	-	Lambda probe heater -Z19- Lambda probe 2 heater -Z28- Lambda probe 1 heater after catalytic converter -Z29-	87
			10 A	-	Lambda probe heater -Z19-
F22	-	Fuse 22 on fuse holder B -SB22-	5 A	-	Brake pedal switch -F63- Clutch position sender -G476-	87
F23	-	Fuse 23 on fuse holder B -SB23-	15 A	-	Fuel pressure regulating valve -N276-	87
			10 A	-	Exhaust gas recirculation valve -N18- Charge pressure control solenoid valve -N75- Exhaust gas recirculation valve 2 -N213- Exhaust gas recirculation cooler change-over valve -N345-
			5 A	-	Secondary air pump relay -J299-
F24	-	Fuse 24 on fuse holder B -SB24-	10 A	-	Map-controlled engine cooling system thermostat -F265- Activated charcoal filter system solenoid valve 1 -N80- Variable intake manifold change-over valve -N156- Camshaft control valve 1 -N205- Intake manifold flap motor -V157-	87
F25	-	Fuse 25 on fuse holder B -SB25-	40 A	-	Onboard supply control unit -J519- (right side light, right main beam, right dipped beam, right turn signal, right fog light)	30
F26	-	Fuse 26 on fuse holder B -SB26-	40 A	-	Onboard supply control unit -J519- (left side light, left main beam, left dipped beam, left turn signal, left fog light)	30
F27	-	Fuse 27 on fuse holder B -SB27-	50 A	-	Automatic glow period control unit -J179- Glow plug 1 -Q10- Glow plug 2 -Q11- Glow plug 3 -Q12- Glow plug 4 -Q13-	87
			40 A		Secondary air pump motor -V101-
F28	-	Fuse 28 on fuse holder B -SB28-	40 A	-	Terminal 15 voltage supply relay 2 -J681- Supply for the fuses: -SC1- up to -SC6-, -SC7- up to -SC11-, -SC29- up to -SC31-, -SC39-, -SC47-, -SC49-	30
F29	-	Fuse 29 on fuse holder B -SB29-	50 A	-	Supply for the fuses: -SC18-, -SC20-, -SC32- up to -SC37-, -SC44-, -SC45-, -SC48-, -S131-	30
F30	-	Fuse 30 on fuse holder B -SB30-	50 A ¹	-	X-contact relief relay -J59- Supply for the fuses: -SC40-, -SC41-, -SC42-, -SC46-	30

Note:

¹ Fuse was increased from 40 A to 50 A, applicable from November 2005

AUDI A3 2010 Position of fuses electronics box low, from model year 2007

Position of fuses electronics box low, from model year 2007

No.		Current Flow Diagram designation	Nominal value		Function/component	Terminal
F1	-	Fuse 1 on fuse holder B -SB1-	40 A	-	Voltage stabiliser -J532- Supply for the fuses: -SC7- up to -SC11- only models with stop/start system applicable from model year 2010	30
F1	-	Fuse 1 on fuse holder B -SB1-	40 A	-	Supply for the fuses: -SC7- up to -SC10- only models without stop/start system applicable from model year 2010	30
F2	-	Fuse 2 on fuse holder B -SB2-	5 A	-	Steering column electronics control unit -J527- is dropped from model year 2009	30
F2	-	Fuse 2 on fuse holder B -SB2-	30 A	-	Mechatronic unit for dual clutch gearbox -J743- (7-speed dual clutch gearbox 0AM) applicable from model year 2009	30
F2	-	Fuse 2 on fuse holder B -SB2-	20 A	-	Fuel pressure regulating valve -N276- (CBFA) applicable from model year 2009 is dropped from May 2011	30
F2	-	Fuse 2 on fuse holder B -SB2-	15 A	-	Fuel pressure regulating valve -N276- (CBFA) applicable from May 2011	30
F3	-	Fuse 3 on fuse holder B -SB3-	5 A	-	Onboard supply control unit -J519-	30
F3	-	Fuse 3 on fuse holder B -SB3-	5 A	-	Battery monitor control unit -J367- applicable from model year 2010	30
F4	-	Fuse 4 on fuse holder B -SB4-	30 A	-	ABS control unit -J104- (MK60 ESP valves) ABS control unit -J104- (MK70 ABS valves) is dropped from model year 2009	30
F4	-	Fuse 4 on fuse holder B -SB4-	20 A	-	ABS control unit -J104- (MK60 ESP valves) applicable from model year 2009	30
F5	-	Fuse 5 on fuse holder B -SB5-	15 A	-	Mechatronic unit for dual clutch gearbox -J743-	30
F6	-	Fuse 6 on fuse holder B -SB6-	5 A	-	Control unit in dash panel insert -J285- is dropped from model year 2010	30
F6	-	Fuse 6 on fuse holder B -SB6-	5 A	-	Steering column electronics control unit -J527- applicable from model year 2009	30
F7	-	Fuse 7 on fuse holder B -SB7-	20 A	-	Fuel pressure regulating valve -N276- (CBFA) is dropped from model year 2009	30
F8	-	Fuse 8 on fuse holder B -SB8-	15 A	-	Navigation operating electronics control unit -J402- Control unit with display for radio and navigation system -J503- Radio -R- is dropped from model year 2010	30
F8	-	Fuse 8 on fuse holder B -SB8-	25 A	-	Control unit with display for radio and navigation -J503-¹ with radio navigation system (models for Japan) only is dropped from model year 2010	30
F9	-	Fuse 9 on fuse holder B -SB9-	5 A	-	Navigation system with CD drive control unit -J401-¹ Navigation system tuner for TV -J415-¹ Satellite radio -R146- Telephone transmitter and receiver unit -R36- Aerial amplifier for mobile telephone -R86-¹ 18-pin connector -T18a- (VDA interface) ¹ is dropped from model year 2010	30
F10	-	Fuse 10 on fuse holder B -SB10-	5 A	-	Terminal 30 voltage supply relay -J317- (BKC, BXE, AZV, BKD, BLS, BMM, BUY, BMN, CBBB, CBAB, CBAA, CAYB, CAYC, CBEA, CFFA, CFFB, CFGB, CLJA)	30
F10		Fuse 10 on fuse holder B -SB10-	5 A	-	Engine control units -J...- (CMSA, CAXC, CBBB, CBAB, CBAA, CAYB, CAYC, CBEA, CBZB, CFFA, CFFB, CFGB, CLJA) Motronic current supply relay -J271- (CAXC, CBZB)	30
F10	-	Fuse 10 on fuse holder B -SB10-	10 A	-	Engine control units -J...- (BLF, BPT, BPU, BVZ, BVY, BZB, CAWB, CBFA, CCTA, CDAA, CCZA) Motronic current supply relay -J271- (BLF, BPT, BPU, BVZ, BVY, BZB, CAWB, CBFA, CCTA, CDAA, CCZA)	30
F11	-	Fuse 11 on fuse holder B -SB11-	20 A	-	Auxiliary heater control unit -J364-¹ is dropped from November 2010	30
F11	-	Fuse 11 on fuse holder B -SB11-	30 A	-	Auxiliary heater control unit -J364-¹ applicable from November 2010	30
F12	-	Fuse 12 on fuse holder B -SB12-	5 A	-	Data bus diagnostic interface -J533-	30
F13	-	Fuse 13 on fuse holder B -SB13-	30 A	-	Engine control units -J...- (BKC, BXE, AZV, BKD, BLS, BMM, BUY, BMN, CBBB, CBAB, CBAA, CAYB, CAYC, CBEA, CFFA, CFFB, CFGB, CLJA)	87
			25 A		Engine control units -J...- (BLF, BPT, BPU, BYT, BVZ, BVY, BSE, BSF) is dropped from May 2007, for models with engine codes BSE, BSF only
			15 A		Engine control units -J...- (CMSA, CAXC, BZB, CAWB, CBFA, CCTA, CDAA, CCZA, CBZB) applicable from May 2007, for models with engine codes BSE, BSF, CCSA, CMXA only
F14		Fuse 14 on fuse holder B -SB14-	20 A	-	Ignition coil 1 with output stage -N- (BSE, BSF, CCSA, CBZB, CMXA) Ignition coil 2 -N128- (BSE, BSF, CCSA, CBZB, CMXA)	87
F14	-	Fuse 14 on fuse holder B -SB14-	20 A	-	Ignition coil 1 with output stage -N70- Ignition coil 2 with output stage -N127- Ignition coil 3 with output stage -N291- Ignition coil 4 with output stage -N292- for models with engine codes BLF, BPT, BPU, BYT, BVZ, BVY, CAXC, CMSA, BZB, CAWB, CBFA, CCTA, CDAA, CCZA only	87
F14	-	Fuse 14 on fuse holder B -SB14-	20 A	-	Fuel pressure regulating valve -N276- (CBBB, CBAB, CBAA, CAYB, CAYC, CBEA, CFFA, CFFB, CFGB, CLJA) Fuel metering valve -N290- (CBBB, CBAB, CBAA, CAYB, CAYC, CBEA, CFFA, CFFB, CFGB, CLJA) is dropped from May 2011	87
F14	-	Fuse 14 on fuse holder B -SB14-	15 A	-	Fuel pressure regulating valve -N276- (CBBB, CBAB, CBAA, CAYB, CAYC, CBEA, CFFA, CFFB, CFGB, CLJA) Fuel metering valve -N290- (CBBB, CBAB, CBAA, CAYB, CAYC, CBEA, CFFA, CFFB, CFGB, CLJA) Throttle valve module -J338- (CBEA) Radiator fan control unit -J293- (CBEA) applicable from May 2011	87
F15	-	Fuse 15 on fuse holder B -SB15-	15 A	-	Lambda probe 1 heater after catalytic converter -Z29-(BVY) Lambda probe 2 heater after catalytic converter -Z30- (BVY) Lambda probe 3 heater after catalytic converter -Z64- (BVY)	87
F15	-	Fuse 15 on fuse holder B -SB15-	10 A	-	Lambda probe 1 heater after catalytic converter -Z29- (BVZ)	87
F15	-	Fuse 15 on fuse holder B -SB15-	10 A	-	Lambda probe 1 heater after catalytic converter -Z29- (CAXC, CBZB, CMSA) Lambda probe heater -Z19- (CAXC, CBZB, CMSA)	87
F15	-	Fuse 15 on fuse holder B -SB15-	10 A	-	Camshaft control valve 1 -N205- (BPT, BPU, BYT)	87
F15		Fuse 15 on fuse holder B -SB15-	10 A	-	Radiator identification sensor -G611- (CBFA) Fuel system diagnostic pump -V144- (CBFA, CCTA) Lambda probe heater -Z19- (CBFA)	87
F15	-	Fuse 15 on fuse holder B -SB15-	5 A	-	Fuel pump relay -J17- Automatic glow period control unit -J179- for models with engine codes BKC, BXE, AZV, BKD, BLS, BMM, BUY, BMN, CBBB, CBAB, CBAA, CAYB, CAYC, CBEA, CFFA, CFFB, CFGB, CLJA	87
F15	-	Fuse 15 on fuse holder B -SB15-	5 A	-	Low heat output relay -J359- High heat output relay -J360- for models with engine codes BKC, BXE, AZV, BKD, BLS, BMM, BUY, BMN, CBBB, CBAB, CBAA, CAYB, CAYC, CBEA, CFFA, CFFB, CFGB, CLJA applicable from November 2006, only for models with auxiliary air heater	87
F15	-	Fuse 15 on fuse holder B -SB15-	5 A	-	Supplementary fuel pump relay -J832- (CBBB, CBAB, CBAA, CBEA, CFFA, CFFB, CFGB, CLJA)	87
F16	-	Fuse 16 on fuse holder B -SB16-	30 A	-	ABS control unit -J104- (ABS pump) is dropped from model year 2009	30
F16	-	Fuse 16 on fuse holder B -SB16-	30 A	-	Onboard supply control unit -J519- Right side light supply, right main beam, right dipped beam, right turn signal, right fog light applicable from model year 2009	30
F17	-	Fuse 17 on fuse holder B -SB17-	15 A	-	High tone horn -H2- Low tone horn -H7-	30
F18	-	Fuse 18 on fuse holder B -SB18-	30 A	-	Amplifier -R12- Amplifier with bass loudspeaker, on left in luggage compartment -R44-	30
F18	-	Fuse 18 on fuse holder B -SB18-	30 A	-	Voltage stabiliser -J532- Amplifier -R12- Amplifier with bass loudspeaker, on left in luggage compartment -R44- only models with stop/start system applicable from model year 2010	30
F19	-	Fuse 19 on fuse holder B -SB19-	30 A	-	Wiper motor control unit -J400-	30
F20	-	Fuse 20 on fuse holder B -SB20-	20 A	-	Fuel pressure regulating valve -N276- (BYT, BPT, BPU, BZB, CAWB, CCTA, CDAA, CCZA) is dropped from May 2011	87
F20	-	Fuse 20 on fuse holder B -SB20-	15 A	-	Fuel pressure regulating valve -N276- (BYT, BPT, BPU, BZB, CAWB, CCTA, CDAA, CCZA) applicable from May 2011	87
F20	-	Fuse 20 on fuse holder B -SB20-	10 A	-	Coolant circulation pump -V50- (CAXC, CMSA)	87
F21	-	Fuse 21 on fuse holder B -SB21-	10 A	-	Lambda probe 3 heater after catalytic converter -Z64- (CBFA)	87
F21	-	Fuse 21 on fuse holder B -SB21-	10 A	-	Lambda probe heater -Z19- (BSE, BSF, BLF, BPT, BPU, BYT, BVZ, BVY, BLS, BMM, BUY, BMN, BZB, CAWB, CCTA, CCSA, CDAA, CCZA, CBBB, CBAB, CBAA, CAYB, CAYC, CBEA, CFFA, CFFB, CFGB) Lambda probe 1 heater after catalytic converter -Z29- (BSE, BSF, BLF, CCTA, CBFA, CCSA, CDAA, CCZA, CBEA) is dropped from May 2009, for models with engine codes BSF, BSE, CCSA, CCTA, CCZA, CDAA only	87
F21	-	Fuse 21 on fuse holder B -SB21-	15 A	-	Lambda probe heater -Z19- (BSE, CCSA, CCTA, CCZA, CDAA, CMXA, BSF) Lambda probe 1 heater after catalytic converter -Z29- (BSE, CCSA, CCTA, CCZA, CDAA, CMXA, BSF) applicable from model year 2010	87
F21	-	Fuse 21 on fuse holder B -SB21-	20 A	-	Vacuum pump relay -J57- (CAXC, CMSA) Vacuum pump for brakes -V192- (CAXC, CMSA)	87
F22		Fuse 22 on fuse holder B -SB22-	5 A		Clutch position sender -G476-	87
F22		Fuse 22 on fuse holder B -SB22-	5 A		Brake light switch -F- Brake pedal switch -F63- applicable from model year 2010	87
F23	-	Fuse 23 on fuse holder B -SB23-	5 A	-	Continued coolant circulation relay -J151- (BPT, BPU, BYT, BZB, CAWB, CCTA, CBFA, CCZA, CDAA) Secondary air pump relay -J299- (BSE, BSF, CBFA, CCSA, CMXA) Engine components current supply relay -J757- (CBFA) Continued coolant circulation pump -V51- (BPT, BPU, BYT, BZB, CAWB, CCTA, CBFA, CCZA, CDAA)	87
			10 A		Exhaust gas recirculation valve -N18- (BKC, BXE, AZV, BKD) Charge pressure control solenoid valve -N75- (BLS, BMM, BKC, BXE, AZV, BKD, BMN, BUY, CBBB, CBAB, CBAA, CAYB, CAYC, CBEA, CFFA, CFFB, CFGB, CLJA) Exhaust gas recirculation valve 2 -N213- (BKC, BXE, AZV, BKD) Intake manifold flap valve -N316- (BMN, BUY) Exhaust gas recirculation cooler change-over valve -N345- (BLS, BMM) Exhaust gas recirculation cooler change-over valve -N345- (BMN, BUY, CBBB, CBAB, CBAA, CAYB, CAYC, CFFA, CFFB, CFGB, CLJA)
			10 A		Air mass meter -G70- (CFFA, CFFB, CFGB, CLJA)
			15 A		Fuel pressure regulating valve -N276- (BLF, CAXC, BVY, BVZ, CBZB, CMSA)
F24	-	Fuse 24 on fuse holder B -SB24-	10 A	-	Radiator fan control unit -J293- Additional coolant pump relay -J496- (CAXC, CMSA) Engine component current supply relay -J757- (BPT, BPU, BYT, CAXC, CDAA, CAWB, CCZA, CCTA) Throttle valve module -J338- (CBEA) Charge pressure control solenoid valve -N75- (BPT, BPU, BYT, CAXC, CMSA, CAWB, BZB, CCTA, CBFA, CDAA, CCZA) Activated charcoal filter solenoid valve 1 -N80- (BPT, BPU, BYT, BSE, BSF, BLF, BVY, BVZ, CMSA, CAXC, CAWB, BZB, CCTA, CBFA, CCSA, CDAA, CCZA, CBZB, CMXA) Secondary air inlet valve -N112- (CBFA) Variable intake manifold change-over valve -N156- (BSE, BSF, BLF, BVY, BVZ, CCSA, CMXA) Inlet camshaft control valve 1 -N205- (BLF, BVY, BVZ, CAXC, CAWB, BZB, CMSA, CCTA, CBFA, CDAA, CCZA) Turbocharger air recirculation valve -N249- (BPT, BPU, BYT, CMSA, CAXC, CAWB, BZB, CCTA, CBFA, CDAA, CCZA) Intake manifold flap valve -N316- (BPT, BPU, BYT, CAWB, BZB, CCTA, CBFA, CDAA, CCZA, CBZB) Oil pressure control valve -N428- Intake manifold flap motor -V157- (BKC, BXE, AZV, BKD) Pump for exhaust gas recirculation cooler -V400- (CBBB, CBAB, CBAA, CAYB, CAYC, CFFA, CFFB, CFGB, CLJA) Electrohydraulic engine mounting solenoid valve -N398- (CAYB, CAYC)	87
F25	-	Fuse 25 on fuse holder B -SB25-	30 A	-	Onboard supply control unit -J519- Right side light supply, right main beam, right dipped beam, right turn signal, right fog light is dropped from model year 2009	30
F25	-	Fuse 25 on fuse holder B -SB25-	40 A	-	ABS control unit -J104- (MK60 ESP pump) ABS control unit -J104- (MK70 ABS pump and ABS valves) applicable from model year 2009	30
F26	-	Fuse 26 on fuse holder B -SB26-	30 A	-	Onboard supply control unit -J519- Left side light supply, left main beam, left dipped beam, left turn signal, left fog light	30
F27	-	Fuse 27 on fuse holder B -SB27-	50 A	-	Automatic glow period control unit -J179- Glow plug 1 -Q10- Glow plug 2 -Q11- Glow plug 3 -Q12- Glow plug 4 -Q13- for models with engine codes BKC, BXE, AZV, BKD, BLS, BMM, BUY, BMN, CBBB, CBAB, CBAA, CAYB, CAYC, CBEA, CFFA, CFFB, CFGB, CLJA only	87
F27	-	Fuse 27 on fuse holder B -SB27-	40 A	-	Secondary air pump motor -V101- (BSF, BSE, CBFA, CCSA, CMXA)	87
F28	-	Fuse 28 on fuse holder B -SB28-	40 A	-	Terminal 15 voltage supply relay 2 -J681- Supply for the fuses: -SC1- up to -SC6-, -SC29- up to -SC31-, -SC46-, -SC47-, -SC49- is dropped from model year 2009	30
F29	-	Fuse 29 on fuse holder B -SB29-	50 A	-	B300 Positive connection 4 (30), in main wiring harness Supply for the fuses: -SC32- up to -SC37-, -SC44-, -SC45-, -SC48-, -S131- is dropped from model year 2009	30
F29	-	Fuse 29 on fuse holder B -SB29-	50 A	-	B300 Positive connection 4 (30), in main wiring harness Supply for the fuses: -SC32- up to -SC37-, -SC39-, -SC44-, -SC45-, -SC48-, -S131- applicable from model year 2009	30
F30	-	Fuse 30 on fuse holder B -SB30-	50 A	-	X-contact relief relay -J59- Supply for the fuses: -SC40-, -SC41-, -SC42- is dropped from model year 2009	30
F30	-	Fuse 30 on fuse holder B -SB30-	50 A	-	Terminal 15 voltage supply relay 2 -J681- Supply for the fuses: -SC1- up to -SC6-, -SC19-, -SC20-, -SC29- up to -SC31-, -SC40-, -SC41-, -SC42-, -SC46-, -SC47-, -SC49- applicable from model year 2009	30

¹ not for models with US equipment

AUDI A3 2010 Location fuse holder B SB on electronics box high, in left of engine compartment

Location fuse holder B -SB- on electronics box high, in left of engine compartment

Fuse colours

Get access to all wiring diagrams of the car

50A - red

40A - orange

30A - light-green

25A - natural (white)

20 A - yellow

15A - light blue

10A - red

7.5A - brown

5A - light-brown

3 A - purple

AUDI A3 2010 Position of fuses electronics box high, from model year 2004

Position of fuses electronics box high, from model year 2004

No.		Current Flow Diagram designation	Nominal value		Function/component	Terminal
F1	-	Fuse 1 on fuse holder B -SB1-	30 A	-	ABS hydraulic pump -V64-	30
F2	-	Fuse 2 on fuse holder B -SB2-	30 A	-	ABS hydraulic unit -N55-	30
F3	-	Fuse 3 on fuse holder B -SB3-	20 A	-	Convenience system central control unit -J393-	30
F4	-	Fuse 4 on fuse holder B -SB4-	5 A	-	Onboard supply control unit -J519- for models with battery in engine compartment only	30
F5	-	Fuse 5 on fuse holder B -SB5-	20 A	-	High tone horn -H2- Low tone horn -H7-	30
F6	-	Fuse 6 on fuse holder B -SB6-	7.5 A	-	Fuel pressure regulating valve -N276-¹ is dropped, from model year 2005	87 (30a)
			15 A	-	Fuel pressure regulating valve -N276-¹ applicable from model year 2005
			20 A	-	Output stage -N122-¹
			30 A	-	Ignition coil 1 with output stage -N70- Ignition coil 2 with output stage -N127- Ignition coil 3 with output stage -N291- Ignition coil 4 with output stage -N292- Ignition coil 5 with output stage -N323-¹ Ignition coil 6 with output stage -N324-¹
F7	-	Fuse 7 on fuse holder B -SB7-	5 A	-	Brake light switch -F- Brake pedal switch -F63- Clutch travel sender -G162-	87 (30a)
F8	-	Fuse 8 on fuse holder B -SB8-	10 A	-	Map-controlled engine cooling system thermostat -F265-¹ Radiator fan control unit -J293- Exhaust gas recirculation valve -N18-¹ Activated charcoal filter system solenoid valve 1 -N80-¹ Variable intake manifold change-over valve -N156-¹ Camshaft control valve 1 -N205- Exhaust camshaft control valve 1 -N318-¹ Intake manifold flap motor -V157-¹	87 (30a)
F9	-	Fuse 9 on fuse holder B -SB9-	10 A	-	Fuel pump relay -J17-¹ Continued coolant circulation relay -J151- Automatic glow period control unit -J179-¹ NOx sensor control unit -J583-¹ Continued coolant circulation pump -V51- NOx sender heater -Z44-¹	87 (30a)
F10	-	Fuse 10 on fuse holder B -SB10-	10 A	-	Secondary air pump relay -J299-¹ Exhaust gas recirculation valve -N18-¹ Charge pressure control solenoid valve -N75-¹ Secondary air inlet valve -N112-¹ Exhaust gas recirculation valve 2 -N213-¹ Exhaust flap valve -N220-¹ Lambda probe 1 heater after catalytic converter -Z29-¹ Lambda probe 2 heater after catalytic converter -Z30-¹ Fuel system diagnostic pump -V144-	87 (30a)
F11	-	Fuse 11 on fuse holder B -SB11-	25 A	-	Motronic control unit -J220- Simos control unit -J361-¹	87 (30a)
			30 A	-	Diesel direct injection system control unit -J248-¹
F12	-	Fuse 12 on fuse holder B -SB12-	15 A	-	NOx sensor control unit -J583-¹ Lambda probe heater -Z19-¹ Lambda probe 2 heater -Z28-¹ NOx sender heater -Z44-¹	87 (30a)
F13	-	Fuse 13 on fuse holder B -SB13-	20 A	-	Mechatronic unit for dual clutch gearbox -J743-	30
F14	-	Not assigned	-	-		-
F15	-	Fuse 15 on fuse holder B -SB15-	40 A	-	Starter -B-	87 (50)
F16	-	Fuse 16 on fuse holder B -SB16-	15 A	-	Steering column electronics control unit -J527-	30
F17	-	Fuse 17 on fuse holder B -SB17-	10 A	-	Control unit in dash panel insert -J285-	30
F18		Fuse 18 on fuse holder B -SB18-	30 A	-	Amplifier -R12- Amplifier with bass loudspeaker, on left in luggage compartment -R44-	30
F19	-	Fuse 19 on fuse holder B -SB19-	15 A	-	Radio -R- Navigation operating electronics control unit -J402-	30
F20	-	Fuse 20 on fuse holder B -SB20-	5 A	-	Telephone transmitter and receiver unit -R36- Aerial amplifier for mobile telephone -R86-¹	30
F21	-	Fuse 21 on fuse holder B -SB21-	10 A	-	Navigation system with CD drive control unit -J401- Navigation system tuner for TV -J415-¹	30
F22	-	Not assigned	-	-		-
F23	-	Not assigned	-	-		-
F24	-	Fuse 24 on fuse holder B -SB24-	10 A	-	Data bus diagnostic interface -J533-	30
F25	-	Not assigned	-	-
F26	-	Fuse 26 on fuse holder B -SB26-	10 A	-	Motronic control unit -J220- Motronic current supply relay -J271-	30
			5 A	-	Terminal 30 voltage supply relay -J317-¹
F27	-	Fuse 21 on fuse holder B -SB21-	10 A	-	Crankcase breather heater element -N79-¹ for models with heater element only	87 (15)
			5 A	-	Crankcase breather heater element -N79-¹ for models with heater element only	87 (15)
F28		Fuse 28 on fuse holder B -SB28-	20 A	-	Automatic gearbox control unit -J217-¹	87 (15)
F29	-	Fuse 29 on fuse holder B -SB29-	10 A	-	Injector, cylinder 1 -N30-¹ Injector, cylinder 2 -N31-¹ Injector, cylinder 3 -N32-¹ Injector, cylinder 4 -N33-¹ Injector, cylinder 5 -N83-¹ Injector, cylinder 6 -N84-¹	87 (15)
			20 A		Ignition coil 1 with output stage -N70-¹ Ignition coil 2 with output stage -N127-¹ Ignition coil 3 with output stage -N291-¹ Ignition coil 4 with output stage -N292-¹
F30	-	Fuse 30 on fuse holder B -SB30-	20 A	-	Auxiliary heater control unit -J364-¹	30
F31	-	Fuse 31 on fuse holder B -SB31-	30 A	-	Wiper motor control unit -J400-	30
F32	-	Fuse 32 on fuse holder B -SB32-	10 A	-	Injector, cylinder 1 -N30-¹ Injector, cylinder 2 -N31-¹ Injector, cylinder 3 -N32-¹ Injector, cylinder 4 -N33-¹ Charge pressure control solenoid valve -N75- Activated charcoal filter system solenoid valve 1 -N80- Turbocharger air recirculation valve -N249-	87 (15a)
F33	-	Fuse 33 on fuse holder B -SB33-	15 A	-	Fuel system pressurisation pump -G6-¹	87 (15a)
F33	-	Fuse 33 on fuse holder B -SB33-	7.5 A	-	Fuel pressure regulating valve -N276- is dropped, from model year 2005	87 (15a)
F33	-	Fuse 33 on fuse holder B -SB33-	15 A	-	Fuel pressure regulating valve -N276- applicable from model year 2005	87 (15a)
F34	-	Not assigned	-	-		-
F35	-	Not assigned	-	-		-
F36	-	Not assigned	-	-		-
F37	-	Not assigned	-	-		-
F38	-	Fuse 38 on fuse holder B -SB38-	10 A	-	Left headlight range control motor -V48- Right headlight range control motor -V49-	87 (15)
F39	-	Fuse 39 on fuse holder B -SB39-	5 A	-	Oil level and oil temperature sender -G266-	87 (15)
F40	-	Fuse 40 on fuse holder B -SB40-	20 A	-	Supply for the fuses: -SC1- up to -SC6-, -SC7- up to -SC11-, -SC29- up to -SC31- for models with battery in engine compartment only	87 (15)
F41	-	Fuse 41 on fuse holder B -SB41-	10 A	-	Air mass meter -G70-	87 (15)
F42	-	Fuse 42 on fuse holder B -SB42-	5 A	-	Fuel pump relay -J17-	87 (15)
			10 A	-	Air mass meter -G70-¹
F43	-	Fuse 43 on fuse holder B -SB43-	20 A	-	Vacuum pump relay -J57-¹ for petrol engines with automatic gearbox only	87 (15)
F44	-	Fuse 44 on fuse holder B -SB44-	10 A	-	Air mass meter -G70-¹ Fuel system diagnostic pump -V144-	87 (15a)
F45	-	Fuse 45 on fuse holder B -SB45-	10 A	-	Lambda probe heater -Z19- Lambda probe 1 heater after catalytic converter -Z29-¹	87 (15a)
			15 A	-	Lambda probe heater -Z19-¹ Lambda probe 1 heater after catalytic converter -Z29-¹
F46	-	Fuse 46 on fuse holder B -SB46-	10 A	-	Lambda probe 2 heater -Z28-¹ Lambda probe 1 heater after catalytic converter -Z29- Lambda probe 2 heater after catalytic converter -Z30-¹	87 (15a)
F47	-	Fuse 47 on fuse holder B -SB47-	40 A	-	Onboard supply control unit -J519- Left side light supply, left main beam, left dipped beam, left turn signal, left fog light	30
F48	-	Fuse 48 on fuse holder B -SB48-	40 A	-	Onboard supply control unit -J519- Right side light supply, right main beam, right dipped beam, right turn signal, right fog light	30
F49	-	Fuse 49 on fuse holder B -SB49-	30 A	-	Terminal 15 voltage supply relay 2 -J681- Supply for the fuses: -SC1- up to -SC6-, -SC7- up to -SC11-, -SC29- up to -SC31- for models with battery in luggage compartment only	30
F50	-	Not assigned	-	-	-	-
F51	-	SB51 - Fuse 51 on fuse holder	40 A	-	Secondary air pump relay -J299-¹ Secondary air pump motor -V101-¹	30
			50 A	-	Automatic glow period control unit -J179-¹
F52	-	SB52 - Fuse 52 on fuse holder	50 A	-	X-contact relief relay -J59- Supply for the fuses: -SC40-, -SC41-, -SC42-, -SC46-	30
F53	-	SB53 - Fuse 53 on fuse holder	50 A	-	Supply for the fuses: -SC32- up to -SC37-, -SC44-, -SC45- for models with battery in engine compartment only	30
			50 A	-	Supply for the fuses: -SC32- up to -SC37- for models with battery in luggage compartment only	30
F54	-		50 A	-	Radiator fan thermal switch -F18-¹ Radiator fan control unit -J293- J293 radiator fan control unit	30

¹ not for models with US equipment

AUDI A3 2010 Position of fuses electronics box high, from model year 2006

Position of fuses electronics box high, from model year 2006

No.		Current Flow Diagram designation	Nominal value		Function/component	Terminal
F1	-	Fuse 1 on fuse holder B -SB1-	30 A	-	ABS control unit -J104- ABS hydraulic pump -V64-	30
F2	-	Fuse 2 on fuse holder B -SB2-	30 A	-	ABS control unit -J104- ABS hydraulic unit -N55-	30
F3	-	Fuse 3 on fuse holder B -SB3-	20 A	-	Convenience system central control unit -J393-	30
F4	-	Fuse 4 on fuse holder B -SB4-	5 A	-	Onboard supply control unit -J519-	30
F5	-	Fuse 5 on fuse holder B -SB5-	15 A	-	High tone horn -H2- Low tone horn -H7-	30
F6	-	Fuse 6 on fuse holder B -SB6-	15 A	-	Fuel pressure regulating valve -N276- Fuel system pressurisation pump -G6-	87
F7	-	Not assigned	-	-		-
F8	-	Not assigned	-	-		-
F9	-	Fuse 9 on fuse holder B -SB9-	10 A	-	Charge pressure control solenoid valve -N75- Activated charcoal filter system solenoid valve 1 -N80- Turbocharger air recirculation valve -N249-	87
F10	-	Fuse 10 on fuse holder B -SB10-	10 A	-	Air mass meter -G70- Fuel system diagnostic pump -V144-	87
F11	-	Fuse 11 on fuse holder B -SB11-	10 A	-	Lambda probe heater -Z19- Lambda probe 2 heater -Z28-	87
F12	-	Fuse 12 on fuse holder B -SB12-	10 A	-	Lambda probe 1 heater after catalytic converter -Z29- Lambda probe 2 heater after catalytic converter -Z30-	87
F13	-	Fuse 13 on fuse holder B -SB13-	15 A	-	Mechatronic unit for dual clutch gearbox -J743-	30
F14	-	Not assigned	-	-		-
F15	-	Fuse 15 on fuse holder B -SB15-	10 A	-	Continued coolant circulation pump -V51-	87
F16	-	Fuse 16 on fuse holder B -SB16-	5 A	-	Steering column electronics control unit -J527-	30
F17	-	Fuse 17 on fuse holder B -SB17-	5 A	-	Control unit in dash panel insert -J285-	30
F18	-	Fuse 18 on fuse holder B -SB18-	30 A	-	Amplifier -R12- Amplifier with bass loudspeaker, on left in luggage compartment -R44-	30
F19	-	Fuse 19 on fuse holder B -SB19-	15 A	-	Radio -R- Navigation operating electronics control unit -J402-	30
F20	-	Fuse 20 on fuse holder B -SB20-	5 A	-	Navigation system with CD drive control unit -J401-¹ Navigation system tuner for TV -J415-¹ Telephone transmitter and receiver unit -R36- Aerial amplifier for mobile telephone -R86-¹ Satellite radio -R146-	30
F21	-	Not assigned	-	-		-
F22	-	Not assigned	-	-		-
F23	-	Fuse 23 on fuse holder B -SB23-	5 A	-	Motronic control unit -J220- Motronic current supply relay -J271-	30
F24	-	Fuse 24 on fuse holder B -SB24-	5 A	-	Data bus diagnostic interface -J533-	30
F25	-	Not assigned	-	-		-
F26	-	Not assigned	-	-		-
F27	-	Not assigned	-	-		-
F28	-	Fuse 28 on fuse holder B -SB28-	25 A	-	Motronic control unit -J220-	87
F29	-	Fuse 29 on fuse holder B -SB29-	5 A	-	Continued coolant circulation relay -J151- Secondary air pump relay -J299-	87
F30	-	Fuse 30 on fuse holder B -SB30-	20 A	-	Auxiliary heater control unit -J364-	30
F31	-	Fuse 31 on fuse holder B -SB31-	30 A	-	Wiper motor control unit -J400-	30
F32	-	Not assigned	-	-		-
F33	-	Not assigned	-	-		-
F34	-	Not assigned	-	-		-
F35	-	Not assigned	-	-		-
F36	-	Not assigned	-	-		-
F37	-	Not assigned	-	-		-
F38	-	Fuse 38 on fuse holder B -SB38-	10 A	-	Activated charcoal filter system solenoid valve 1 -N80-¹ Variable intake manifold change-over valve -N156-¹ Camshaft control valve 1 -N205- Exhaust camshaft control valve 1 -N318-¹ Radiator fan control unit -J293-	87
F39	-	Fuse 39 on fuse holder B -SB39-	5 A	-	Brake pedal switch -F63- Clutch position sender -G476-	87
F40	-	Fuse 40 on fuse holder B -SB40-	20 A	-	Ignition coil 1 with output stage -N70- Ignition coil 2 with output stage -N127- Ignition coil 3 with output stage -N291- Ignition coil 4 with output stage -N292-	87
F41	-	Not assigned	-	-		-
F42	-	Fuse 42 on fuse holder B -SB42-	5 A	-	Engine component current supply relay -J757-	87
F43	-	Fuse 43 on fuse holder B -SB43-	30 A	-	Ignition coil 1 with output stage -N70- Ignition coil 2 with output stage -N127- Ignition coil 3 with output stage -N291- Ignition coil 4 with output stage -N292- Ignition coil 5 with output stage -N323- Ignition coil 6 with output stage -N324-	87
F44	-	Not assigned	-	-		-
F45	-	Not assigned	-	-		-
F46	-	Not assigned	-	-		-
F47	-	Fuse 47 on fuse holder B -SB47-	40 A	-	Onboard supply control unit -J519- Left side light supply, left main beam, left dipped beam, left turn signal, left fog light	30
F48	-	Fuse 48 on fuse holder B -SB48-	40 A	-	Onboard supply control unit -J519- Right side light supply, right main beam, right dipped beam, right turn signal, right fog light	30
F49	-	Fuse 49 on fuse holder B -SB49-	40 A	-	J681 - Terminal 15 voltage supply relay 2 Supply for the fuses: -SC1- up to -SC6-, -SC7- up to -SC11-, -SC29- up to -SC31-, -SC47-, -SC49-	30
F50	-	Not assigned	-	-		-
F51	-	Fuse 51 on fuse holder B -SB51-	40 A	-	Secondary air pump relay -J299- Secondary air pump motor -V101-	30
F52	-	Fuse 52 on fuse holder B -SB52-	50 A ²	-	X-contact relief relay -J59- Supply for the fuses: -SC40-, -SC41-, -SC42-, -SC46-	30
F53	-	Fuse 53 on fuse holder B -SB53-	50 A	-	Supply for the fuses: -SC18-, -SC20-, -SC32- up to -SC37-, -SC44-, -SC45-, -SC48-, -S131-	30

¹ not for models with US equipment

² Fuse was increased from 40 A to 50 A, applicable from November 2005

AUDI A3 2010 Position of fuses electronics box high, from model year 2007

Position of fuses electronics box high, from model year 2007

No.		Current Flow Diagram designation	Nominal value		Function/component	Terminal
F1	-	Fuse 1 on fuse holder B -SB1-	30 A	-	ABS control unit -J104- (ABS pump) is dropped from model year 2009	30
F1	-	Fuse 1 on fuse holder B -SB1-	30 A	-	Onboard supply control unit -J519- Right side light supply, right main beam, right dipped beam, right turn signal, right fog light applicable from model year 2009	30
F2	-	Fuse 2 on fuse holder B -SB2-	30 A	-	ABS control unit -J104- (MK60 ESP valves) ABS control unit -J104- (MK70 ABS valves) is dropped from model year 2009	30
F2	-	Fuse 2 on fuse holder B -SB2-	20 A	-	ABS control unit -J104- (MK60 ESP valves) applicable from model year 2009	30
F3	-	Fuse 3 on fuse holder B -SB3-	40 A	-	Voltage stabiliser -J532- Supply for the fuses: -SC7- up to -SC11- only models with stop/start system applicable from model year 2010	30
F3	-	Fuse 3 on fuse holder B -SB3-	40 A	-	Supply for the fuses: -SC7- up to -SC10- only models without stop/start system applicable from model year 2010	30
F4	-	Fuse 4 on fuse holder B -SB4-	5 A	-	Onboard supply control unit -J519-	30
F5	-	Fuse 5 on fuse holder B -SB5-	15 A	-	High tone horn -H2- Low tone horn -H7-	30
F6	-	Fuse 6 on fuse holder B -SB6-	15 A	-	Fuel pressure regulating valve -N276- (BPY, BWA, BHZ, BZC, CDLC)	87
F6	-	Fuse 6 on fuse holder B -SB6-	15 A	-	Fuel system pressurisation pump -G6- Injector, cylinder 1 -N30- Injector, cylinder 2 -N31- Injector, cylinder 3 -N32- Injector, cylinder 4 -N33- Injector, cylinder 5 -N83- Injector, cylinder 6 -N84- for models with engine codes BUB only is dropped from model year 2009	87
F7	-	Fuse 7 on fuse holder B -SB7-	15 A	-	Fuel system pressurisation pump -G6- Injector, cylinder 1 -N30- Injector, cylinder 2 -N31- Injector, cylinder 3 -N32- Injector, cylinder 4 -N33- Injector, cylinder 5 -N83- Injector, cylinder 6 -N84- for models with engine codes BUB, CBRA only applicable from model year 2009	87
F7	-	Fuse 7 on fuse holder B -SB7-	15 A	-	Fuel pressure regulating valve -N276- (CDLA, CDLC, BPY, BZC) applicable from model year 2009	87
F7		Fuse 7 on fuse holder B -SB7-	30 A		Fuel pump control unit -J538- (CEPA, CEPB)	87
F8	-	Not assigned		-
F9	-	Fuse 9 on fuse holder B -SB9-	10 A	-	Charge pressure control solenoid valve -N75- Activated charcoal filter system solenoid valve 1 -N80- Turbocharger air recirculation valve -N249- for models with engine codes BPY, BWA, BHZ, CDLA, CDLC, BZC only	87
F9	-	Fuse 9 on fuse holder B -SB9-	15 A	-	Charge pressure control solenoid valve -N75- Activated charcoal filter system solenoid valve 1 -N80- Turbocharger air recirculation valve -N249- Fuel metering valve -N290- Exhaust flap valve 1 -N321- for models with engine code CEPA, CEPB only	87
F10	-	Fuse 10 on fuse holder B -SB10-	10 A	-	Fuel system diagnostic pump -V144- (BPY, BWA, BHZ, BZC, CDLA, CDLC)	87
F10	-	Fuse 10 on fuse holder B -SB10-	10 A	-	Air mass meter -G70- (BUB, CBRA)	87
F11	-	Fuse 11 on fuse holder B -SB11-	10 A	-	Lambda probe heater -Z19- (BPY, BWA, BHZ, CDLA, CDLC, BZC)	87
F11	-	Fuse 11 on fuse holder B -SB11-	10 A	-	Lambda probe heater -Z19- (BUB, CBRA) Lambda probe 2 heater -Z28- (BUB, CBRA)	87
F12	-	Fuse 12 on fuse holder B -SB12-	10 A	-	Lambda probe 1 heater after catalytic converter -Z29- (BPY, BWA, BHZ, CDLA, CDLC, BZC)	87
F12	-	Fuse 12 on fuse holder B -SB12-	10 A	-	Lambda probe 1 heater after catalytic converter -Z29- (BUB, CBRA) Lambda probe 2 heater after catalytic converter -Z30- (BUB, CBRA)	87
F13	-	Fuse 13 on fuse holder B -SB13-	15 A	-	Mechatronic unit for dual clutch gearbox -J743-	30
F14	-	Not assigned	-	-
F15	-	Fuse 15 on fuse holder B -SB15-	10 A	-	Continued coolant circulation pump -V51-	87
F15	-	Fuse 15 on fuse holder B -SB15-	10 A	-	Refrigerant circulation solenoid valve -N492- (CEPA, CEPB)	87
F16	-	Fuse 16 on fuse holder B -SB16-	5 A	-	Steering column electronics control unit -J527- is dropped from model year 2009	30
F17	-	Fuse 17 on fuse holder B -SB17-	5 A	-	Control unit in dash panel insert -J285- is dropped from model year 2010	30
F17	-	Fuse 17 on fuse holder B -SB17-	5 A	-	Steering column electronics control unit -J527- applicable from model year 2009	30
F18	-	Fuse 18 on fuse holder B -SB18-	30 A	-	Amplifier -R12- Amplifier with bass loudspeaker, on left in luggage compartment -R44-	30
F18	-	Fuse 18 on fuse holder B -SB18-	30 A	-	Voltage stabiliser -J532- Amplifier -R12- Amplifier with bass loudspeaker, on left in luggage compartment -R44- only models with stop/start system applicable from model year 2010	30
F19	-	Fuse 19 on fuse holder B -SB19-	25 A	-	Control unit with display for radio and navigation system -J503- with radio navigation system (models for Japan) only not for models with US equipment is dropped from model year 2010	30
F19	-	Fuse 19 on fuse holder B -SB19-	15 A	-	Navigation operating electronics control unit -J402- Control unit with display for radio and navigation system -J503- Radio -R- is dropped from model year 2010	30
F20	-	Fuse 20 on fuse holder B -SB20-	5 A	-	Navigation system with CD drive control unit -J401- Navigation system tuner for TV -J415- Telephone transmitter and receiver unit -R36- Aerial amplifier for mobile telephone -R86- is dropped from model year 2010	30
F20	-	Fuse 20 on fuse holder B -SB20-	5 A	-	18-pin connector -T18a- (VDA interface) not for models with US equipment is dropped from model year 2010	30
F20	-	Fuse 20 on fuse holder B -SB20-	5 A	-	Satellite radio -R146- for models with US equipment only is dropped from model year 2010	30
F20	-	Fuse 20 on fuse holder B -SB20-	5 A	-	Telephone transmitter and receiver unit -R36- is dropped from model year 2010	30
F21	-	Not assigned		-
F22	-	Not assigned		-
F23	-	Fuse 23 on fuse holder B -SB23-	10 A	-	Engine control units -J...- Motronic current supply relay -J271- not for models with engine code CEPA, CEPB	30
F23	-	Fuse 23 on fuse holder B -SB23-	5 A	-	Engine control unit -J623- Motronic current supply relay -J271- Control relay -J789- for models with engine code CEPA, CEPB only	30
F24	-	Fuse 24 on fuse holder B -SB24-	5 A	-	Data bus diagnostic interface -J533-	30
F25	-	Not assigned	-	-
F26	-	Not assigned	-	-
F27	-	Fuse 27 on fuse holder B -SB27-	5 A	-	Exhaust flap valve -N220- (BHZ, CDLA, CDLC, BZC)	87
F27	-	Fuse 27 on fuse holder B -SB27-	15 A	-	Lambda probe heater -Z19- (CEPA, CEPB)	87
F28	-	Fuse 28 on fuse holder B -SB28-	15 A	-	Lambda probe 1 heater after catalytic converter -Z29- (CEPA, CEPB)	87
F28	-	Fuse 28 on fuse holder B -SB28-	25 A	-	Engine control units -J...- (BHZ, BUB, BWA, BPY, CDLA, BZC, CDLC, CDLA) Is dropped from May 2007, for models with engine codes BUB, BHZ, BWA, BPY, CDLA, CDLC only	87
F28	-	Fuse 28 on fuse holder B -SB28-	15 A	-	Engine control units -J...- Applicable from May 2007, for models with engine codes BUB, BHZ, BWA, BPY, CDLA, CDLC, CBRA, BZC only	87
F29	-	Fuse 29 on fuse holder B -SB29-	5 A	-	Continued coolant circulation relay -J151- (BWA, BPY, BZC, BHZ, BUB, CDLA, CDLC, CBRA) Secondary air pump relay -J299- (BUB, CBRA)	87
F29	-	Fuse 29 on fuse holder B -SB29-	15 A	-	Additional coolant pump relay -J496- (CEPA, CEPB) Exhaust gas temperature sender 1 -G235- (CEPA, CEPB) Camshaft control valve 1 -N205- (CEPA, CEPB) Intake manifold flap valve -N316- (CEPA, CEPB) Exhaust camshaft control valve 1 -N318- (CEPA, CEPB) Oil pressure control valve -N428- (CEPA, CEPB)	87
F30	-	Fuse 30 on fuse holder B -SB30-	20 A	-	Auxiliary heater control unit -J364- is dropped from November 2010	30
F30	-	Fuse 30 on fuse holder B -SB30-	30 A	-	Auxiliary heater control unit -J364- applicable from November 2010	30
F31	-	Fuse 31 on fuse holder B -SB31-	30 A	-	Wiper motor control unit -J400-	30
F32	-	Not assigned	-	-
F33	-	Not assigned	-	-
F34	-	Not assigned	-	-
F35	-	Not assigned	-	-
F36	-	Not assigned	-	-
F37	-	Not assigned	-	-
F38	-	Fuse 38 on fuse holder B -SB38-	10 A	-	Radiator fan control unit -J293- (BPY, BWA, BHZ, BUB, CDLA, CDLC, CBRA, BZC, CEPA, CEPB) Activated charcoal filter system solenoid valve 1 -N80- (BUB, CBRA) Secondary air inlet valve -N112- (BUB, CBRA) Variable intake manifold change-over valve -N156- (BUB, CBRA) Inlet camshaft control valve 1 -N205- (BPY, BWA, BHZ, BUB, CDLA, CDLC, CBRA, BZC) Exhaust camshaft control valve 1 -N318- (BUB, CBRA) Secondary air inlet valve 2 -N320- (BUB, CBRA) Fuel system diagnostic pump -V144- (BUB, CBRA)	87
F39	-	Fuse 39 on fuse holder B -SB39-	5 A	-	Clutch position sender -G476-	87
F39	-	Fuse 39 on fuse holder B -SB39-	5 A	-	Brake light switch -F- Brake pedal switch -F63- applicable from model year 2010	87
F40	-	Fuse 40 on fuse holder B -SB40-	20 A	-	Ignition coil 1 with output stage -N70- Ignition coil 2 with output stage -N127- Ignition coil 3 with output stage -N291- Ignition coil 4 with output stage -N292- for models with engine codes BPY, BWA, BHZ, CDLA, CDLC, BZC only	87
F40	-	Fuse 40 on fuse holder B -SB40-	15 A	-	Engine control unit -J623- for models with engine code CEPA, CEPB only	87
F41	-	Not assigned	-	-
F42	-	Fuse 42 on fuse holder B -SB42-	5 A	-	Engine component current supply relay -J757- for models with engine codes BPY, BWA, BHZ, CDLA, CDLC, BZC, CEPA, CEPB only	87
F43	-	Fuse 43 on fuse holder B -SB43-	30 A	-	Ignition coil 1 with output stage -N70- (BUB, CBRA, CEPA, CEPB) Ignition coil 2 with output stage -N127- (BUB, CBRA, CEPA, CEPB) Ignition coil 3 with output stage -N291- (BUB, CBRA, CEPA, CEPB) Ignition coil 4 with output stage -N292- (BUB, CBRA, CEPA, CEPB) Ignition coil 5 with output stage -N323- (BUB, CBRA, CEPA, CEPB) Igntion coil 6 with output stage -N324- (BUB, CBRA)	87
F44	-	Not assigned	-	-
F45	-	Not assigned	-	-
F46	-	Not assigned	-	-
F47	-	Fuse 47 on fuse holder B -SB47-	30 A	-	Onboard supply control unit -J519- Left side light supply, left main beam, left dipped beam, left turn signal, left fog light	30
F48	-	Fuse 48 on fuse holder B -SB48-	40 A	-	ABS control unit -J104- (MK60 ESP pump) ABS control unit -J104- (MK70 ABS pump and ABS valves) applicable from model year 2009	30
F48	-	Fuse 48 on fuse holder B -SB48-	30 A	-	Onboard supply control unit -J519- Right side light supply, right main beam, right dipped beam, right turn signal, right fog light is dropped from model year 2009	30
F49	-	Fuse 49 on fuse holder B -SB49-	40 A	-	Terminal 15 voltage supply relay 2 -J681- Supply for the fuses: -SC1- up to -SC6-, -SC29- up to -SC31-, -SC46-, -SC47-, -SC49- is dropped from model year 2009	30
F50	-	Not assigned	-	-
F51	-	Fuse 51 on fuse holder B -SB51-	40 A	-	Secondary air pump motor -V101- (BUB, CBRA)	30
F52	-	Fuse 52 on fuse holder B -SB52-	50 A	-	Terminal 15 voltage supply relay 2 -J681- Supply for the fuses: -SC1- up to -SC6-, -SC19-, -SC20-, -SC29- up to -SC31-, -SC40-, -SC41-, -SC42-, -SC46-, -SC47-, -SC49- applicable from model year 2009	30
F52	-	Fuse 52 on fuse holder B -SB52-	50 A	-	X-contact relief relay -J59- Supply for the fuses: -SC40-, -SC41-, -SC42- is dropped from model year 2009	30
F53	-	Fuse 53 on fuse holder B -SB53-	50 A	-	B300 Positive connection 4 (30), in main wiring harness Supply for the fuses: -SC32- up to -SC37-, -SC44-, -SC45-, -SC48-, -S131- for models with battery in engine compartment only is dropped from model year 2009	30
F53	-	Fuse 53 on fuse holder B -SB53-	50 A	-	B300 Positive connection 4 (30), in main wiring harness Supply for the fuses: -SC32- up to -SC37-, -SC48-, -S131- for models with battery in luggage compartment only is dropped from model year 2009	30
F53	-	Fuse 53 on fuse holder B -SB53-	50 A	-	B300 Positive connection 4 (30), in main wiring harness Supply for the fuses: -SC32- up to -SC37-, -SC39-, -SC44-, -SC45-, -SC48-, -S131- for models with battery in engine compartment only applicable from model year 2009	30
F53	-	Fuse 53 on fuse holder B -SB53-	50 A	-	B300 Positive connection 4 (30), in main wiring harness Supply for the fuses: -SC32- up to -SC37-, -SC39-, -SC48-, -S131- for models with battery in luggage compartment only applicable from model year 2009	30

AUDI A3 2010 Location fuse holder C SC , under left dash panel

Location fuse holder C -SC-, under left dash panel

Fuse colours

Get access to all wiring diagrams of the car

50A - red

40A - orange

30A - light-green

25A - natural (white)

20 A - yellow

15A - light blue

10A - red

7.5A - brown

5A - light-brown

3 A - purple

AUDI A3 2010 Position of fuses, fuse holder, from model year 2004

Position of fuses, fuse holder, from model year 2004

No.		Current Flow Diagram designation	Nominal value		Function/component	Terminal
1	-	Fuse 1 on fuse holder C -SC1-	10 A	-	16-pin connector -T16- (diagnostic connector) Lighting switch -E1-	15
2	-	Fuse 2 on fuse holder C -SC2-	5 A	-	ABS control unit -J104- TCS and ESP button -E256-	15
3	-	Fuse 3 on fuse holder C -SC3-	10 A	-	Power steering control unit -J500-	15
4	-	Fuse 4 on fuse holder C -SC4-	10 A	-	Heater control unit -J65-¹ Air quality sensor -G238- High-pressure sender -G65-	15
5	-	Fuse 5 on fuse holder C -SC5-	5 A	-	Airbag control unit -J234- Seat occupied recognition control unit -J706- applicable from model year 2005	15
5	-	Fuse 5 on fuse holder C -SC5-	5 A	-	Clutch position sender -G476-¹ Brake light switch -F-¹ Brake pedal switch -F63-¹ is dropped from April 2003	15
6	-	Fuse 6 on fuse holder C -SC6-	5 A	-	Data bus diagnostic interface -J533- Function selection switch 2 -E272-¹ Trailer detector control unit -J345-	15
7	-	Fuse 7 on fuse holder C -SC7-	5 A	-	Heater control unit -J65-¹ Headlight range control unit -J431- Heated rear left seat switch with regulator -E128- Heated rear right seat switch with regulator -E129-	15
8	-	Fuse 8 on fuse holder C -SC8-	10 A	-	Garage door operating unit -E284- Navigation system with CD drive control unit -J401-¹ Parking aid control unit -J446- Garage door operation control unit -J530- Automatic anti-dazzle interior mirror -Y7-	15
9	-	Fuse 9 on fuse holder C -SC9-	5 A	-	All-wheel drive control unit -J492-	15
10	-	Fuse 10 on fuse holder C -SC10-	5 A	-	Selector lever -E313- Tiptronic switch -F189-¹	15
11	-	Fuse 11 on fuse holder C -SC11-	10 A	-	Trailer socket -U10-¹	15
12	-	Fuse 12 on fuse holder C -SC12-	10 A	-	Driver door control unit -J386- Front passenger door control unit -J387-	30
13	-	Fuse 13 on fuse holder C -SC13-	10 A	-	Brake light switch -F- 16-pin connector -T16- (diagnostic connector)	30
14	-	Fuse 14 on fuse holder C -SC14-	5 A	-	Automatic gearbox control unit -J217-¹	30
15	-	Fuse 15 on fuse holder C -SC15-	10 A	-	Onboard supply control unit -J519-	30
16	-	Fuse 16 on fuse holder C -SC16-	10 A	-	Rain and light sensor -G397- Heater control unit -J65-¹ Climatronic control unit -J255- Remote control receiver for auxiliary heater -R64-¹	30
17	-	Fuse 17 on fuse holder C -SC17-	5 A	-	Convenience system central control unit -J393-	30
18	-	Fuse 18 on fuse holder C -SC18-	5 A	-	Selector lever -E313- Tiptronic switch -F189-¹ Parking aid control unit -J446-¹ ABS control unit -J104-	30
19	-	Fuse 19 on fuse holder C -SC19-	10 A	-	Rear left door control unit -J388- Rear right door control unit -J389-	30
20	-	Not assigned	-	-		-
21	-	Not assigned	-	-		-
22	-	Fuse 22 on fuse holder C -SC22-	40 A	-	Fresh air blower control unit -J126-	30
23	-	Fuse 23 on fuse holder C -SC23-	20 A	-	Headlight washer system relay -J39- Headlight washer system pump -V11- is dropped, from model year 2005	30
24	-	Fuse 24 on fuse holder C -SC24-	20 A	-	Cigarette lighter -U1- 12V socket -U5-	30
25	-	Fuse 25 on fuse holder C -SC25-	30 A	-	Heated rear window -Z1-	30
26	-	Fuse 26 on fuse holder C -SC26-	20 A	-	Socket -U-	30
27	-	Fuse 27 on fuse holder C -SC27-	15 A	-	Fuel pump relay -J17-¹ Electric fuel pump 2 relay -J49-¹ Fuel pump control unit -J538-	30
28	-	Not assigned	-	-		-
29	-	Fuse 29 on fuse holder C -SC29-	10 A	-	Motronic control unit -J220- Diesel direct injection system control unit -J248-¹ Simos control unit -J361-¹ Fuel pump control unit -J538- Front passenger side airbag deactivated warning lamp -K145-	15
30	-	Not assigned	-	-		-
31	-	Fuse 31 on fuse holder C -SC31-	5 A	-	Reversing light switch -F4- Mechatronic unit for dual clutch gearbox -J743-	15
32	-	Not assigned	-	-
33	-	Fuse 33 on fuse holder C -SC33-	25 A	-	Sliding sunroof control unit -J245-	15
34		Fuse 34 on fuse holder C -SC34-	20 A		Heated rear left seat control unit -J215-¹ Heated rear right seat control unit -J216-¹	30
35	-	Fuse 35 on fuse holder C -SC35-	5 A	-	Interior monitoring sensor -G273- Vehicle inclination sender -G384- Alarm horn -H12-	30
36	-	Fuse 36 on fuse holder C -SC36-	10 A	-	Driver seat lumbar support adjustment switch -E176- Front passenger seat lumbar support adjustment switch -E177-	30
37	-	Fuse 37 on fuse holder C -SC37-	20 A	-	Climatronic control unit -J255- Driver seat heating control unit -J726-¹ Front passenger seat heating control unit -J727-¹	30
38	-	Not assigned	-	-		-
39	-	Not assigned	-	-		-
40	-	Fuse 40 on fuse holder C -SC40-	40 A	-	Fresh air blower switch -E9-¹ for models without air conditioning system only	75
41	-	Fuse 41 on fuse holder C -SC41-	15 A	-	Rear window wiper motor -V12-	75
42	-	Fuse 42 on fuse holder C -SC42-	15 A	-	Windscreen and rear window washer pump -V59-	75
43	-	Not assigned	-	-
44	-	Fuse 44 on fuse holder C -SC44-	20 A	-	Trailer detector control unit -J345-¹ Supply for turn signal, brake light, left tail light	30
45	-	Fuse 45 on fuse holder C -SC45-	15 A	-	Trailer detector control unit -J345-¹ Supply for rear fog light, reversing light, right tail light	30
46	-	Fuse 46 on fuse holder C -SC46-	5 A	-	Heater control unit -J65-¹ Climatronic control unit -J255- Left washer jet heater element -Z20- Right washer jet heater element -Z21-	75
47	-	Not assigned	-	-		-
48	-	Fuse 48 on fuse holder C -SC48-	10 A	-	Option driving school vehicle	30
49	-	Fuse 49 on fuse holder C -SC49-	10 A	-	Option driving school vehicle	15
49	-	Fuse 49 on fuse holder C -SC49-	5 A	-	Option police	15

¹ not for models with US equipment

AUDI A3 2010 Position of fuses, fuse holder, from model year 2006

Position of fuses, fuse holder, from model year 2006

No.		Current Flow Diagram designation	Nominal value		Function/component	Terminal
1	-	Fuse 1 on fuse holder C -SC1-	10 A	-	Lighting switch -E1- Fuel pump relay -J17- Engine control unit -J623-¹ Motronic control unit -J220- Diesel direct injection system control unit -J248-¹ Fuel pump control unit -J538- 16-pin connector -T16- (diagnostic connector)	15
2	-	Fuse 2 on fuse holder C -SC2-	5 A	-	ABS control unit -J104- Brake light switch -F- Brake pedal switch -F63-	15
3	-	Fuse 3 on fuse holder C -SC3-	5 A	-	Airbag control unit -J234- Front passenger side airbag deactivated warning lamp -K145-	15
4	-	Fuse 4 on fuse holder C -SC4-	5 A	-	Tyre pressure monitor button -E226-¹ TCS and ESP button -E256- Reversing light switch -F4- High-pressure sender -G65- Air quality sensor -G238- Oil level and oil temperature sender -G266- Heater control unit -J162-¹ Heated rear left seat control unit -J215-¹ Heated rear right seat control unit -J216-¹ Driver seat heating control unit -J726-¹ Front passenger seat heating control unit -J727-¹	15
5	-	Fuse 5 on fuse holder C -SC5-	5 A	-	Headlight range control unit -J431-	15
			10 A	-	Headlight range control regulator -E102-¹ Left headlight range control motor -V48-¹ Right headlight range control motor -V49-¹	15
6	-	Fuse 6 on fuse holder C -SC6-	5 A	-	Function selection switch 2 -E272-¹ Selector lever -E313- Tiptronic switch -F189-¹ Power steering control unit -J500- Data bus diagnostic interface -J533- Mechatronic unit for dual clutch gearbox -J743-	15
7	-	Fuse 7 on fuse holder C -SC7-	5 A	-	Garage door operating unit -E284- Trailer detector control unit -J345-¹ Navigation system with CD drive control unit -J401-¹ Navigation operating electronics control unit -J402- Parking aid control unit -J446-¹ Garage door operation control unit -J530- Automatic anti-dazzle interior mirror -Y7-	15
8	-	Fuse 8 on fuse holder C -SC8-	10 A	-	Trailer socket -U10-¹	15
9	-	Not assigned	-	-		-
10	-	Fuse 10 on fuse holder C -SC10-	5 A	-	Seat occupied recognition control unit -J706-	15
11	-	Fuse 11 on fuse holder C -SC11-	5 A	-	Power output module for right headlight -J668-	15
12	-	Fuse 12 on fuse holder C -SC12-	10 A	-	Driver door control unit -J386- Front passenger door control unit -J387-	30
13	-	Fuse 13 on fuse holder C -SC13-	10 A	-	Brake light switch -F- (Bremsleuchten) 16-pin connector -T16- (diagnostic connector)	30
14	-	Fuse 14 on fuse holder C -SC14-	5 A	-	Automatic gearbox control unit -J217-¹	30
15	-	Fuse 15 on fuse holder C -SC15-	10 A	-	Onboard supply control unit -J519-	30
16	-	Fuse 16 on fuse holder C -SC16-	10 A	-	Rain and light sensor -G397- Heater control unit -J162-¹ Climatronic control unit -J255- Remote control receiver for auxiliary heater -R64-¹	30
17	-	Fuse 17 on fuse holder C -SC17-	5 A	-	Convenience system central control unit -J393-	30
18	-	Fuse 18 on fuse holder C -SC18-	5 A	-	Selector lever -E313- Tiptronic switch -F189-¹ Parking aid control unit -J446-¹	30
19	-	Fuse 19 on fuse holder C -SC19-	10 A	-	Rear left door control unit -J388- Rear right door control unit -J389-	30
20	-	Fuse 20 on fuse holder C -SC20-	5 A	-	ABS control unit -J104-¹	30
21	-	Not assigned	-	-		-
22	-	Fuse 22 on fuse holder C -SC22-	40 A	-	Fresh air blower control unit -J126-	30
23	-	Fuse 23 on fuse holder C -SC23-	30 A	-	Driver side window regulator motor -V147-	30
24	-	Fuse 24 on fuse holder C -SC24-	20 A	-	Cigarette lighter -U1- 12V socket -U5-	30
25	-	Fuse 25 on fuse holder C -SC25-	30 A	-	Heated rear window -Z1-	30
26	-	Fuse 26 on fuse holder C -SC26-	20 A	-	Socket -U-	30
27	-	Fuse 27 on fuse holder C -SC27-	15 A	-	Electric fuel pump 2 relay -J49- Fuel pump control unit -J538-	30
28	-	Fuse 28 on fuse holder C -SC28-	30 A	-	Rear left window regulator motor -V26- Rear right window regulator motor -V27-	30
29	-	Fuse 29 on fuse holder C -SC29-	10 A	-	Air mass meter -G70- Crankcase breather heater element -N79-	15
30	-	Fuse 30 on fuse holder C -SC30-	10 A	-	Injector, cylinder 1 -N30- Injector, cylinder 2 -N31- Injector, cylinder 3 -N32- Injector, cylinder 4 -N33- Injector, cylinder 5 -N83- Injector, cylinder 6 -N84-	15
31	-	Fuse 31 on fuse holder C -SC31-	5 A	-	All-wheel drive control unit -J492-	15
			20 A	-	Vacuum pump relay -J57-¹	15
32	-	Fuse 32 on fuse holder C -SC32-	30 A	-	Headlight washer system pump -V11- Headlight washer system relay -J39-	30
33	-	Fuse 33 on fuse holder C -SC33-	25 A	-	Sliding sunroof control unit -J245-	30
34	-	Fuse 34 on fuse holder C -SC34-	20 A	-	Heated rear left seat control unit -J215-¹ Heated rear right seat control unit -J216-¹	30
35	-	Fuse 35 on fuse holder C -SC35-	5 A	-	Interior monitoring sensor -G273- Vehicle inclination sender -G384- Alarm horn -H12-	30
36	-	Fuse 36 on fuse holder C -SC36-	10 A	-	Driver seat lumbar support adjustment switch -E176- Front passenger seat lumbar support adjustment switch -E177-	30
37	-	Fuse 37 on fuse holder C -SC37-	20 A	-	Climatronic control unit -J255- Driver seat heating control unit -J726-¹ Front passenger seat heating control unit -J727-¹ Front left seat heating -Z45- Front right seat heating -Z46-	30
38	-	Fuse 38 on fuse holder C -SC38-	30 A	-	Front passenger side window regulator motor -V148-	30
39	-	Fuse 39 on fuse holder C -SC39-	20 A	-	Multifunction switch -F125-¹ Automatic gearbox control unit -J217-¹	15
40	-	Fuse 40 on fuse holder C -SC40-		-	Fresh air blower switch -E9-¹ for models without air conditioning system only	75
41	-	Fuse 41 on fuse holder C -SC41-	15 A	-	Rear window wiper motor -V12-	75
42	-	Fuse 42 on fuse holder C -SC42-	15 A	-	Windscreen and rear window washer pump -V59-	75
43	-	Not assigned	-	-
44	-	Fuse 44 on fuse holder C -SC44-	20 A	-	Trailer detector control unit -J345-¹	30
45	-	Fuse 45 on fuse holder C -SC45-	15 A	-	Trailer detector control unit -J345-¹	30
46	-	Fuse 46 on fuse holder C -SC46-	5 A	-	Heater control unit -J162-¹ Climatronic control unit -J255- Left washer jet heater element -Z20- Right washer jet heater element -Z21-	75
47	-	Fuse 47 on fuse holder C -SC47-	5 A	-	Power output module for left headlight -J667-	15
48	-	Fuse 48 on fuse holder C -SC48-	10 A	-	Socket -U-¹ for driving school only	30
49	-	Fuse 49 on fuse holder C -SC49-	5 A	-	Special vehicle fuse 6 -S296-¹ Footwell light switch -E295-¹ Warning buzzer switch -E296-¹	15

¹ not for models with US equipment

AUDI A3 2010 Position of fuses, fuse holder, from model year 2007

Position of fuses, fuse holder, from model year 2007

No.		Current Flow Diagram designation	Nominal value		Function/component	Terminal
1	-	Fuse 1 on fuse holder C -SC1-	10 A	-	Lighting switch -E1- Headlight range control regulator -E102-¹ Air mass meter -G70- (BKC, BXE, AZV, BKD, BLS, BMM, BMN, BPU, BPT, BYZ, BWA, BPY, BHZ, BZB, CAWB, CBFA, BUY, CDAA, CCZA, CCTA, CDLA, CDLC, CAYB, CAYC, BZC, CBEA) Trailer detector control unit -J345-¹ Headlight range control unit -J431- Heater element for crankcase breather -N79- (BSE, BSF, BKC, BXE, AZV, BKD, BLS, BMM, BMN, BUB, BUY, CCSA, CBBB, CBAB, CBAA, CBRA, CAYB, CAYC, CBEA, CFFA, CFFB, CFGB, CMXA, CLJA) 16-pin connector -T16- (diagnostic connector) Left headlight range control motor -V48-¹ Right headlight range control motor -V49-¹	15
1	-	Fuse 1 on fuse holder C -SC1-	10 A	-	Air mass meter -G70- (CBBB, CBAB, CBAA) only models without stop/start system applicable from model year 2010	15
1	-	Fuse 1 on fuse holder C -SC1-	10 A	-	Stop/start system button -E693- only models with stop/start system no longer fitted, phased from model year 2010	15
2	-	Fuse 2 on fuse holder C -SC2-	10 A	-	Engine control units -J...- Fuel pump relay -J17- (BSE, BSF, BUB, CCSA, CBRA, CMXA) ABS control unit -J104- Current supply relay for Simos control unit -J363- (BSE, BSF, CCSA, CMXA) ¹ Power steering control unit -J500- Data bus diagnostic interface -J533- Fuel pump control unit -J538- (BPU, BYT, BPT, BLF, BVY, BVZ, BPY, BWA, BHZ, CMSA, CAXC, BZB, CAWB, CBFA, CDAA, CCZA, CCTA, CDLC, CDLA, BZC) Selector lever sensors control unit -J587- Mechatronic unit for dual clutch gearbox -J743-	15
2	-	Fuse 2 on fuse holder C -SC2-	10 A	-	Brake light switch -F- Brake pedal switch -F63- is dropped from model year 2010	15
2	-	Fuse 2 on fuse holder C -SC2-	10 A	-	Tiptronic switch -F189-¹ All-wheel drive control unit -J492- is dropped from model year 2009	15
2	-	Fuse 2 on fuse holder C -SC2-	10 A	-	Starter relay 1 -J906- Starter relay 2 -J907- Automatic anti-dazzle interior mirror relay -J910- only models with stop/start system applicable from model year 2010	15
3	-	Fuse 3 on fuse holder C -SC3-	5 A	-	Airbag control unit -J234- Front passenger side airbag deactivated warning lamp -K145-	15
4	-	Fuse 4 on fuse holder C -SC4-	5 A	-	Heated rear left seat switch with regulator -E128-¹ Heated rear right seat switch with regulator -E129-¹ Tyre pressure monitor button -E226-¹ TCS and ESP button -E256- Garage door operating unit -E284- Reversing light switch -F4- High-pressure sender -G65- Air quality sensor -G238- Oil level and oil temperature sender -G266- Heater control unit -J162- Climatronic control unit -J255- Air conditioning system control unit -J301-¹ Navigation system with CD drive control unit -J401-¹ Parking aid control unit -J446- Garage door operation control unit -J530- Seat occupied recognition control unit -J706- Driver seat heating control unit -J726-¹ Front passenger seat heating control unit -J727-¹ Left washer jet heater element -Z20- Right washer jet heater element -Z21-	15
4	-	Fuse 4 on fuse holder C -SC4-	5 A	-	Automatic anti-dazzle interior mirror -Y7- is dropped from model year 2010	15
4	-	Fuse 4 on fuse holder C -SC4-	5 A	-	Automatic anti-dazzle interior mirror -Y7- only models without stop/start system applicable from model year 2010	15
4	-	Fuse 4 on fuse holder C -SC4-	5 A	-	Voltage stabiliser -J532- only models with stop/start system applicable from model year 2010	15
4	-	Fuse 4 on fuse holder C -SC4-	5 A	-	Stop/start system button -E693- only models with stop/start system Gradual introduction during model year 2010	15
5	-	Fuse 5 on fuse holder C -SC5-	5 A	-	Power output module for left headlight -J667-	15
6	-	Fuse 6 on fuse holder C -SC6-	5 A	-	Power output module for right headlight -J668-	15
7	-	Not assigned	-	-		-
8	-	Fuse 8 on fuse holder C -SC8-	5 A	-	Control unit in dash panel insert -J285- applicable from model year 2010	30
9	-	Fuse 9 on fuse holder C -SC9-	15 A	-	Navigation operating electronics control unit -J402- Control unit with display for radio and navigation system -J503- Radio -R- 8-pin connector -T8- (preparation for radio supply) ¹ applicable from model year 2010	30
10	-	Fuse 10 on fuse holder C -SC10-	7.5 A	-	Navigation system tuner for TV -J415-¹ Telephone transmitter and receiver unit -R36- Satellite radio -R146-² Connection for external audio sources -R199- 18-pin connector -T18a- (VDA interface) ¹ applicable from model year 2010	30
11	-	Fuse 11 on fuse holder C -SC11-	10 A	-	Automatic anti-dazzle interior mirror relay -J910- Automatic anti-dazzle interior mirror -Y7- only models with stop/start system applicable from model year 2010	30
12	-	Fuse 12 on fuse holder C -SC12-	10 A	-	Driver door control unit -J386- Front passenger door control unit -J387-	30
13	-	Fuse 13 on fuse holder C -SC13-	10 A	-	Rear left door control unit -J388- Rear right door control unit -J389-	30
13	-	Fuse 13 on fuse holder C -SC13-	10 A	-	Convenience system central control unit -J393- is dropped from model year 2010	30
14	-	Fuse 14 on fuse holder C -SC14-	10 A	-	ABS control unit -J104- Selector lever sensors control unit -J587-	30
14	-	Fuse 14 on fuse holder C -SC14-	10 A	-	Tiptronic switch -F189-¹ Automatic gearbox control unit -J217-¹ Parking aid control unit -J446- is dropped from model year 2009	30
15	-	Fuse 15 on fuse holder C -SC15-	10 A	-	Front interior light -W- Front interior light -W1- Rear interior light -W43-	30
16	-	Fuse 16 on fuse holder C -SC16-	10 A	-	Rain and light sensor -G397- Heater control unit -J162- Climatronic control unit -J255- Air conditioning system control unit -J301-¹ Tyre pressure monitor control unit -J502-² Remote control receiver for auxiliary heater -R64-¹ 16-pin connector -T16- (diagnostic connector)	30
16	-	Fuse 16 on fuse holder C -SC16-	10 A	-	Lighting switch -E1- applicable from model year 2010	30
17	-	Fuse 17 on fuse holder C -SC17-	5 A	-	Interior monitoring sensor -G273-¹ Vehicle inclination sender -G384-¹ Alarm horn -H12-	30
18	-	Fuse 18 on fuse holder C -SC18-	5 A	-	Engine control unit -J623- (diagnostic cable) for models with engine code CBFA only is dropped from model year 2010	50
18	-	Fuse 18 on fuse holder C -SC18-	5 A	-	Onboard supply control unit -J519- (diagnostic cable) Voltage stabiliser -J532- (diagnosis wiring) Engine control unit -J623- (diagnostic cable) only models with stop/start system applicable from model year 2010	50
18	-	Fuse 18 on fuse holder C -SC18-	5 A	-	Onboard supply control unit -J519- (diagnostic cable) Engine control unit -J623- (diagnostic cable) for models with engine code CBFA only applicable from model year 2010	50
19	-	Fuse 19 on fuse holder C -SC19-	10 A	-	All-wheel drive control unit -J492- applicable from model year 2009	15
20	-	Fuse 20 on fuse holder C -SC20-	5 A	-	Electronically controlled damping control unit -J 250- applicable from model year 2009	15
21	-	Not assigned	-	-		-
22	-	Fuse 22 on fuse holder C -SC22-	40 A	-	Fresh air blower control unit -J126- Fresh air blower -V2-	30
23	-	Fuse 23 on fuse holder C -SC23-	30 A	-	Driver side window regulator motor -V147-	30
24	-	Fuse 24 on fuse holder C -SC24-	20 A	-	Cigarette lighter -U1-	30
25	-	Fuse 25 on fuse holder C -SC25-	30 A	-	Heated rear window -Z1-	30
26	-	Fuse 26 on fuse holder C -SC26-	20 A	-	Socket -U-	30
27	-	Fuse 27 on fuse holder C -SC27-	15 A	-	Fuel pump relay -J17- (BSE, BSF, CCSA, CBBB, CBAB, CBAA, BKC, BXE, AZV, BKD, BLS, BMM, BUY, BMN, CAYB, CAYC, CBEA, CFFA, CFFB, CFGB, CMXA, CLJA) Fuel pump control unit -J538- (BPU, BYT, BPT, BWA, BPY, BHZ, CMSA, CAXC, BZB, CAWB, CCTA, CBFA, BLF, BVY, BVZ, CDAA, CCZA, CDLA, CDLC, BZC, CBZB)	30
27	-	Fuse 27 on fuse holder C -SC27-	15 A	-	Electric fuel pump 2 relay -J49- (BSE, BSF, BUB, CCSA, CBRA, CMXA) applicable from November 2006, for models with auxiliary heating only, models with engine codes BKC, BXE, AZV, BKD, BLS, BMM, BUY, BMN, CBBB, CBAB, CBAA, CAYB, CAYC, CFFA,·CFFB,·CFGB,·CLJA	30
27	-	Fuse 27 on fuse holder C -SC27-	15 A	-	Supplementary fuel pump relay -J832- (CBBB, CBAB, CBAA, CBEA, CFFA, CFFB, CFGB, CLJA) Supplementary fuel pump -V393- (CBBB, CBAB, CBAA, CBEA, CFFA, CFFB, CFGB, CLJA)	30
28	-	Fuse 28 on fuse holder C -SC28-	30 A	-	Rear left window regulator motor -V26- Rear right window regulator motor -V27-	30
29	-	Not assigned	-	-		-
30	-	Fuse 30 on fuse holder C -SC30-	20 A	-	Multifunction switch -F125-¹ Automatic gearbox control unit -J217-¹ is dropped from model year 2009	15
31	-	Fuse 31 on fuse holder C -SC31-	20 A	-	Vacuum pump for brakes -V192- (CCSA, BSE, BSF, CMXA) ¹	15
32	-	Fuse 32 on fuse holder C -SC32-	30 A	-	Headlight washer system pump -V11-	30
33	-	Fuse 33 on fuse holder C -SC33-	20 A	-	Sliding sunroof control unit -J245-	30
34	-	Fuse 34 on fuse holder C -SC34-	20 A	-	Heated rear left seat control unit -J215-¹ Heated rear right seat control unit -J216-¹	30
35	-	Not assigned	-	-
36	-	Fuse 36 on fuse holder C -SC36-	10 A	-	Driver seat lumbar support adjustment switch -E176- Front passenger seat lumbar support adjustment switch -E177-	30
37	-	Fuse 37 on fuse holder C -SC37-	20 A	-	Climatronic control unit -J255- Driver seat heating control unit -J726-¹ Front passenger seat heating control unit -J727-¹	30
38	-	Fuse 38 on fuse holder C -SC38-	30 A	-	Front passenger side window regulator motor -V148-	30
39	-	Fuse 39 on fuse holder C -SC39-	5 A	-	Interface control unit for vehicle location system -J843- (interface for special functions)	30
39	-	Fuse 39 on fuse holder C -SC39-	25 A	-	Control unit with display for radio and navigation -J503-¹ with radio navigation system (models for Japan) only applicable from model year 2010	30
40	-	Fuse 40 on fuse holder C -SC40-	40 A	-	Starter -B- applicable from model year 2009	15
40	-	Fuse 40 on fuse holder C -SC40-	40 A	-	Fresh air blower switch -E9-¹ Fresh air blower -V2-¹ is dropped from model year 2009	75
41	-	Fuse 41 on fuse holder C -SC41-	15 A	-	Rear window wiper motor -V12- applicable from model year 2009	15
41	-	Fuse 41 on fuse holder C -SC41-	15 A	-	Rear window wiper motor -V12- is dropped from model year 2009	75
42	-	Fuse 42 on fuse holder C -SC42-	15 A	-	Windscreen and rear window washer pump -V59- is dropped from model year 2009	75
42	-	Fuse 42 on fuse holder C -SC42-	15 A	-	Windscreen and rear window washer pump -V59- applicable from model year 2009 is dropped from model year 2010	15
43	-	Fuse 43 on fuse holder C -SC43-	20 A	-	Convenience system central control unit -J393- is dropped from model year 2010	30
43	-	Fuse 43 on fuse holder C -SC43-	20 A	-	Onboard supply control unit -J519- applicable from model year 2010	30
44	-	Fuse 44 on fuse holder C -SC44-	20 A	-	Trailer detector control unit -J345-¹	30
45	-	Fuse 45 on fuse holder C -SC45-	15 A	-	Trailer detector control unit -J345-¹ is dropped from November 2006	30
45	-	Fuse 45 on fuse holder C -SC45-	20 A	-	Trailer detector control unit -J345-¹ applicable from November 2006	30
46	-	Fuse 46 on fuse holder C -SC46-	10 A	-	Trailer socket -U10-¹	15
47	-	Fuse 47 on fuse holder C -SC47-	5 A	-	18-pin connector -T18a- (VDA interface) ¹	15
47	-	Fuse 47 on fuse holder C -SC47-	5 A	-	Aerial amplifier for mobile telephone -R86-¹ applicable from model year 2010	15
48	-	Fuse 48 on fuse holder C -SC48-	10 A	-	Socket -U- (driving school vehicle) ¹	30
49	-	Fuse 49 on fuse holder C -SC49-	5 A	-	Buzzer and gong -H3- (driving school vehicle) ¹ Special vehicle fuse 6 -S296- (German special police, doctor on call vehicle) ¹ Driving school footwell lamp -W56-¹	15

¹ not for models with US equipment

² only models with USA equipment

AUDI A3 2010 Main fuse box: Location, fuse holder D SD at rear right in luggage compartment

Main fuse box: Location, fuse holder D -SD- at rear right in luggage compartment

Fuse assignment:

Get access to all wiring diagrams of the car

Position of fuses on main fuse box, from model year 2004

Position of fuses on main fuse box, from model year 2006

AUDI A3 2010 Position of fuses, main fuse box, from model year 2004

Position of fuses, main fuse box, from model year 2004

No.		Current Flow Diagram designation	Nominal value		Function/component	Terminal
1	-	Fuse 1 on fuse holder D -SD1-	5 A	-	Onboard supply control unit -J519-	30
2	-	Fuse 2 on fuse holder D -SD2-	125 A	-	Supply for main fuse box, electronics box, relay and fuse carrier, electronics box	30
3	-	Fuse 3 on fuse holder D -SD3-	80 A	-	Supply for main fuse box, electronics box, relay and fuse carrier, electronics box	30
4	-	Fuse 4 on fuse holder D -SD4-	30 A	-	Amplifier -R12- for models with Bose sound system only	30

AUDI A3 2010 Position of fuses, main fuse box, from model year 2006

Position of fuses, main fuse box, from model year 2006

No.		Current Flow Diagram designation	Nominal value		Function/component	Terminal
1	-	Fuse 1 on fuse holder D -SD1-	5 A	-	Onboard supply control unit -J519-	30
2	-	Fuse 2 on fuse holder D -SD2-	125 A	-	Supply for main fuse box, electronics box high, relay and fuse carrier, electronics box high	30
3	-	Fuse 3 on fuse holder D -SD3-	80 A	-	Supply for main fuse box, electronics box high, relay and fuse carrier, electronics box high	30
4	-	Fuse 4 on fuse holder D -SD4-	30 A	-	Amplifier -R12- for models with Bose sound system only is dropped from November 2005	30
			50 A	-	Option doctor is dropped from November 2005
4	-	Fuse 4 on fuse holder D -SD4-	30 A	-	Supply for the fuses: -SC12- up to -SC17-, -SC19- applicable from November 2005	30
4	-	Fuse 4 on fuse holder D -SD4-	30 A	-	Supply for the fuses: -SC12- up to -SC17-, -SC43- applicable from May 2006	30

AUDI A3 2010 Fuses on left under dash panel

Fuses on left under dash panel

Get access to all wiring diagrams of the car

Position of fuses, from model year 2004

B -	Window regulator single fuse -S37- - 30 A

Position of fuses, from model year 2005

A -	Window regulator single fuse 2 -S280- - 30 A

B -	Window regulator single fuse -S37- - 30 A

C -	Fuse 1 -S131- - 30 A

Position of fuses, from model year 2006

C -	Fuse 1 -S131- - 30 A

q	For left-hand drive models only

q	For right-hand drive models only, is dropped, from model year 2012

D -	Fuse 1 -S131- - 30 A

q	For right-hand drive models only, phased in in model year 2012

AUDI A3 2010 Overview of control units

Overview of control units

Get access to all wiring diagrams of the car

q	Connector assignment

2 -

q	Connector assignment for dual clutch gearbox (02E)

q	Location for dual clutch gearbox (0AM)

q	Connector assignment for dual clutch gearbox (0AM)

q	Location for dual clutch gearbox (0B5)

q	Connector assignment for dual clutch gearbox (0B5)

q	Connector assignment

5 -

6 -

Garage door operation control unit -J530-

Location

q	Connector assignment

8 -	Simos control unit -J361-/Motronic control unit -J220-/Diesel direct injection system control unit -J248-/Engine control unit -J623-

Location

q	Connector assignment, 121 pin

q	Connector assignment, 154 pin

9 -

10 -

Auxiliary heater control unit -J364-

q	under the longitudinal member on front right

q	Connector assignment

q	Connector assignment, 47 pin

q	Connector assignment, 26 pin

Battery monitor control unit -J367-

Location:

on battery -2- in left of engine compartment

Get access to all wiring diagrams of the car

AUDI A3 2010 Automatic gearbox control unit J217

Automatic gearbox control unit -J217-

Connector assignment.

AUDI A3 2010 Automatic gearbox control unit J217

Get access to all wiring diagrams of the car

A -	Automatic gearbox control unit -J217-

Connector:

B -	52-pin connector -T52-

AUDI A3 2010 Wiper motor control unit J400

Location:

in plenum chamber atwindscreen wiper motor -V-

AUDI A3 2010 Wiper motor control unit J400

Get access to all wiring diagrams of the car

AUDI A3 2010 Mechatronic unit for dual clutch gearbox J743

Mechatronic unit for dual clutch gearbox -J743-

Connector assignment.

AUDI A3 2010 Mechatronic unit for dual clutch gearbox J743

Get access to all wiring diagrams of the car

A -	Mechatronic unit for dual clutch gearbox -J743-

Connector:

B -	20-pin connector -T20e-

AUDI A3 2010 Mechatronic unit for dual clutch gearbox J743

Connector assignment.

Get access to all wiring diagrams of the car

-	Mechatronic unit for dual clutch gearbox -J743-

Connector:

A -	25-pin connector -T25-

AUDI A3 2010 Mechatronic unit for dual clutch gearbox J743

Mechatronic unit for dual clutch gearbox -J743-

Fitting location

in engine compartment, left

Get access to all wiring diagrams of the car

A -	Mechatronic unit for dual clutch gearbox -J743-

B -	16-pin connector -T16j-

AUDI A3 2010 Power steering control unit J500

Power steering control unit -J500-

Connector assignment.

AUDI A3 2010 Power steering control unit J500

Get access to all wiring diagrams of the car

A -	Power steering control unit -J500-

Connector:

B -	5-pin connector -T5-

C -	5-pin connector -T5a-

D -	2-pin connector -T2a-

AUDI A3 2010 Left gas discharge light control unit J343 / Right gas discharge light control unit J344

Location:

on headlight housing

AUDI A3 2010 Left gas discharge light control unit J343 / Right gas discharge light control unit J344

Get access to all wiring diagrams of the car

AUDI A3 2010 Garage door operation control unit J530

Garage door operation control unit -J530-

Connector assignment.

AUDI A3 2010 Garage door operation control unit J530

Get access to all wiring diagrams of the car

-	Garage door operation control unit -J530-

Connector:

A -	4-pin connector -T4ak-

AUDI A3 2010 Radiator fan control unit J293

Location:

am Motor für Radiator fan -V7-

AUDI A3 2010 Radiator fan control unit J293

Get access to all wiring diagrams of the car

AUDI A3 2010 Simos control unit J361 / Motronic control unit J220 / Diesel direct injection system control unit J248 / Engine control unit J623

Simos control unit -J361-/Motronic control unit -J220-/Diesel direct injection system control unit -J248-/Engine control unit -J623-

Location:

central in plenum chamber -arrow-

AUDI A3 2010 Simos control unit J361 / Motronic control unit J220 / Diesel direct injection system control unit J248 / Engine control unit J623

Get access to all wiring diagrams of the car

Connector assignment, 121 pin:

Get access to all wiring diagrams of the car

A -	Engine control unit -J623-

Connector:

B -	Steckverbindung, 81fach -T81-

C -	Steckverbindung, 40fach -T40-

Hinweis

-T121-made up of items B and C.

Connector assignment, 154 pin:

Get access to all wiring diagrams of the car

A -	Engine control unit

Connector:

B -	Steckverbindung, 94fach -T94-

C -	Steckverbindung, 60fach -T60-

AUDI A3 2010 ABS control unit J104

Location:

On bulkhead, in engine compartment, right -arrow-

Get access to all wiring diagrams of the car

Steckerbelegung :

Get access to all wiring diagrams of the car

A -	ABS control unit (MK60) -J104-

Connector:

B -	Steckverbindung, 47fach

Steckerbelegung :

Get access to all wiring diagrams of the car

A -	ABS control unit (MK70) -J104-

Connector:

B -	Steckverbindung, 26fach

AUDI A3 2010 Auxiliary heater control unit J364

Auxiliary heater control unit -J364-

Connector assignment.

Get access to all wiring diagrams of the car

1 -	Auxiliary heater control unit -J364-

Connector:

2 -	2-pin connector -T2v-

3 -	2-pin connector -T2x-

5 -	4-pin connector -T4u-

6 -	8-pin connector -T8r-

7 -	3-pin connector -T3j-

8 -	8-pin connector -T8q-

AUDI A3 2010 Overview of relay

Overview of relay

Get access to all wiring diagrams of the car

1 -	Relay carrier on electronics box

q	in left of engine compartment.

q	Components: -J271-, -J317-, -J363-, -J757-, -J329- , -J469-

q	Position of relays on electronics box low, from model year 2006

q	Position of relays on electronics box high, from model year 2004

q	Position of relays on electronics box high, from model year 2006

2 -	Relay carrier on left under dash panel

q	Components: -J17-, -J49-, -J359-, -J682-, -J360-, -J663-, -J151-, -J39-, -J662-, -J832-, -J906-, -J907-, -J910--J789-

q	Position of relays, from model year 2004

q	Position of relays, from model year 2009

3 -	Position of relays on main fuse box, in luggage compartment, rear right

q	Components: -J655-, -J253-

q	Position of relays, from model year 2004

4 -

q	Position of relays, from model year 2010

5 -	Relay carrier under electronics box

q	Components: -J179-, -J299-

q	Position of relays, from model year 2004

Position of relays on electronics box low, from model year 2006

Get access to all wiring diagrams of the car

1 -	Motronic current supply relay -J271-

Slot A1

q	for models with engine codes BLF, BLR, BLY, BVY, BVZ, BPT, BPU, BYT, CMSA, CAXC, BZB, CAWB, CBFA, CCTA, CDAA, CCZA, CBZB only

1 -	Terminal 30 voltage supply relay -J317-

Slot A1

q	for models with engine codes BKC, BXE, AZV, BKD, BLS, BMM, BUY, BMN, CBBB, CBAB, CBAA, CAYB, CAYC, CBEA, CFFA, CFFB, CFGB, CLJA

1 -	Current supply relay for Simos control unit -J363-

Slot A1

q	for models with engine codes BSE, BSF, CCSA, CMXA only

2 -	Wiring bridges, Automatic glow period control unit

Slot A2

q	for models with engine codes BKC, BXE, AZV, BKD, BLS, BMM, BUY, BMN, CBBB, CBAB, CBAA, CAYB, CAYC, CBEA, CFFA, CFFB, CFGB, CLJA only

2 -

q	for models from model year 2009, with engine code CBFA

2 -	Additional coolant pump relay -J496-

Slot A2

q	for models with engine code CAXC, CMSA only

AUDI A3 2010 Position of relays on electronics box high, from model year 2004

Position of relays on electronics box high, from model year 2004

Get access to all wiring diagrams of the car

1 -	Terminal 15 voltage supply relay -J329-

Slot R1

2 -	Terminal 50 voltage supply relay -J682-

Slot R2

3 -	Motronic current supply relay -J271-

Slot R4

3 -	Terminal 30 voltage supply relay -J317-

Slot R4

q	not for models with US equipment

3 -	Current supply relay for Simos control unit -J363-

Slot R4

q	not for models with US equipment

4 -	Fuel pump relay -J17-

Slot R3

AUDI A3 2010 Position of relays on electronics box high, from model year 2006

Position of relays on electronics box high, from model year 2006

Get access to all wiring diagrams of the car

1 -	Motronic current supply relay -J271-

Slot R1

q	for models with engine codes AXX, BPY, BWA, BHZ, BUB, BMJ, CDLA, CDLC, CBRA, BZC, CEPA, CEPB only

2 -	Continued coolant circulation relay -J151-

Slot R2

q	for models with engine codes AXX, BPY, BWA, BHZ, BUB, BMJ, CDLA, CDLC, CBRA, BZC only

2 -	Additional coolant pump relay -J496-

Slot R2

q	for models with engine code CEPA, CEPB only

3 -	Fuel pump relay -J17-

Slot R4

q	for models with engine codes BUB, BMJ, CBRA only

3 -	Engine component current supply relay -J757-

Slot R4

q	for models with engine codes AXX, BPY, BWA, BHZ, CDLA, CDLC, BZC, CEPA, CEPB only

4 -	Not assigned

Slot R3

AUDI A3 2010 Relay positions relay carrier on onboard supply control unit, under left dash panel, from model year 2004

Relay positions relay carrier on onboard supply control unit, under left dash panel, from model year 2004

Get access to all wiring diagrams of the car

1 -	Terminal 15 voltage supply relay 2 -J681-

Slot B1

2 -	Not assigned

Slot B2

3 -	Heated rear window relay -J9-

Slot B5

4 -	Horn relay -J413-

Slot B6

5 -	X-contact relief relay -J59-

Slot B9

6 -	Double washer pump relay 1 -J729-

Slot B8

7 -	Double washer pump relay 2 -J730-

Slot B7

8 -	Not assigned

Slot B3

9 -	Terminal 30 voltage supply relay 2 -J689-

Slot B4

AUDI A3 2010 Relay positions relay carrier on onboard supply control unit, under left dash panel, from model year 2010

Relay positions relay carrier on onboard supply control unit, under left dash panel, from model year 2010

Get access to all wiring diagrams of the car

1 -	Terminal 15 voltage supply relay 2 -J681-

2 -	Heated rear window relay -J9-

3 -	Horn relay -J413-

3 -	Headlight washer system relay -J39-

4 -	X-contact relief relay -J59-

5 -	High heat output relay -J360-

q	for models with auxiliary air heating only

Note:

-J39- and -J413- are mini-relays and can be found on a relay slot.

AUDI A3 2010 Relay positions under left dash panel, from model year 2004

Relay positions under left dash panel, from model year 2004

Get access to all wiring diagrams of the car

1 -	Headlight washer system relay -J39-

2 -	Fuel pump relay -J17-

Slot 2.1

q	for models with diesel engines only

q	is dropped from model year 2006

q	for models with petrol engines and electronics box low, from May 2005

q	for models with diesel engines and electronics box low, from May 2005

q	for models with petrol engines and electronics box low, from August 2005

q	for models with diesel engines and electronics box low, from August 2005

q	for models from model year 2004 with electronics box high, engine codes BGU, BDB, BMJ,

q	for models from model year 2006 with electronics box high, engine codes BUB, BMJ,

2 -	Electric fuel pump 2 relay -J49-

Slot 2.1

q	for models with petrol engines only

q	not for models with engines FSI

q	is dropped from model year 2006

q	for models with petrol engines, from May 2005

q	for models with petrol engines, from August 2005

q	for models with diesel engines, from November 2006

2 -	Electric fuel pump 2 relay -J49-

Slot 2.2

q	for models with petrol engines only

q	not for models with engines FSI

q	applicable from May 2005

q	is dropped from August 2005

2 -	Fuel pump relay -J17-

Slot 2.2

q	applicable from May 2005

q	is dropped from August 2005

q	for models with diesel engines only

2 -	Low heat output relay -J359-

q	applicable from November 2006, only for models with auxiliary air heater

q	for models with diesel engines only

3 -	Terminal 50 voltage supply relay -J682-

q	applicable from May 2005

q	is dropped from August 2005

q	for models from model year 2004

q	for models from August 2005

3 -	High heat output relay -J360-

q	applicable from November 2006, only for models with auxiliary air heater

q	for models with diesel engines only

4 -	Electric fuel pump 2 relay -J49-

Slot 5.1

q	not for models with US equipment

q	applicable from November 2006, only for models with auxiliary heater

q	for models with diesel engines only

5 -	Continued coolant circulation relay -J151-

Slot 5.1

q	applicable from model year 2007

q	for models with engine codes BPT, BPU, BYT, BZB, CAWB, CBFA, CCTA only

q	for models from model year 2004,

q	for models from model year 2006, engine codes AXX, BPY, BWA, BHZ, BUB, BMJ, BZC, CDLA, CDLC

5 -	Engine components current supply relay -J757-

Slot 5.2

q	applicable from model year 2007

q	for models with engine code CBFA only

Electric fuel pump 2 relay -J49-

Slot 5.2

q	applicable from August 2005

q	for models with petrol engines only

q	not for models with engines FSI

5 -

AUDI A3 2010 Relay positions under left dash panel, from model year 2009

Relay positions under left dash panel, from model year 2009

Get access to all wiring diagrams of the car

1 -	Low heat output relay -J359-

q	for models with auxiliary air heating only

1 -	Control relay -J789-

q	for models with engine code CEPA, CEPB only

q	applicable from model year 2011

2 -	Terminal 50 voltage supply relay -J682-

q	only models without stop/start system

3 -	Supplementary fuel pump relay -J832-

Slot 3.1

q	for models with engine codes CBAA, CBAB, CBBB only

q	is dropped from model year 2010

q	for models from model year 2010

3 -	Starter relay 1 -J906-

Slot 3.1

q	applicable from model year 2010

q	only models with stop/start system

3 -	Headlight washer system relay -J39-

Slot 3.2

q	is dropped from model year 2010

q	for models from model year 2010

3 -	Starter relay 2 -J907-

Slot 3.2

q	applicable from model year 2010

q	only models with stop/start system

4 -	Fuel pump relay -J17-

Slot 4.1

q	for models with engine codes BSE, CCSA, BLS, BXE, CBBB, CBAB, CBAA, CAYB, CAYC, CBEA, CFFA, CFFB, CFGB, CLJA only

q	dropped from model year 2010 for models with engine code BSE, BSF, CCSA, CMXA

q	for models with engine codes BUB, CBRA

4 -	Electric fuel pump 2 relay -J49-

Slot 4.1

q	for models with engine codes BUB, CBRA only

q	applicable from model year 2010 for models with engine code BSE, BSF, CCSA, CMXA

4 -	Continued coolant circulation relay -J151-

Slot 4.1

q	for models with engine codes CDAA, CCZA, CAWB, CCTA, CBFA only

q	for models with engine codes BUB, CBRA

4 -	Electric fuel pump 2 relay -J49-

Slot 4.2

q	for models with engine codes BSE, BSF, CCSA, CMXA or with auxiliary heater only, engine codes BLS, BXE, CBBB, CBAB, CBAA, CAYB, CAYC, CFFA, CFFB, CFGB, CLJA

q	dropped from model year 2010 for models with engine code BSE, BSF, CCSA, CMXA

4 -	Fuel pump relay -J17-

Slot 4.2

q	applicable from model year 2010 for models with engine code BSE, BSF, CCSA, CMXA

4 -	Engine components current supply relay -J757-

Slot 4.2

q	for models with engine code CBFA only

5 -	High heat output relay -J360-

q	for models with auxiliary air heating only

q	is dropped from model year 2010

q	for models from model year 2010

5 -	Automatic anti-dazzle interior mirror relay -J910-

Slot 5.1

q	applicable from model year 2010

5 -

AUDI A3 2010 Position of relays under electronics box

Position of relays under electronics box

Get access to all wiring diagrams of the car

1 -	Not assigned

2 -	Automatic glow period control unit -J179-

Slot R2

q	not for models with US equipment

q	applicable from model year 2004

q	is dropped from model year 2006

q	for models from model year 2006

3 -	Not assigned

4 -	Continued coolant circulation relay -J151-

Slot R6

q	applicable from model year 2004

q	is dropped from model year 2006

5 -	Secondary air pump relay -J299-

Slot R5

q	applicable from model year 2004

q	for models with electronics box low, from model year 2006

q	for models with electronics box high, from model year 2009

6 -	Not assigned

Note:

The relay carrier is only visible when the electronics box is removed.

AUDI A3 2010 Position of relays under electronics box

Position of relays under electronics box

Position of relays under electronics box low, from model year 2006

1 -	Relay carrier under electronics box in engine compartment, left

2 -	Automatic glow period control unit -J179-

3 -	Not assigned

Position of relays under electronics box high, from model year 2009

1 -	Relay carrier under electronics box in engine compartment, left

2 -	Not assigned

3 -	Secondary air pump relay -J299-

Note:

The relay carrier is only visible when the electronics box is removed.

Get access to all wiring diagrams of the car

AUDI A3 2010 Position of relays on main fuse box, in luggage compartment, rear right

Position of relays on main fuse box, in luggage compartment, rear right

Get access to all wiring diagrams of the car

5 -	Battery cut-off relay -J655-

5 -	Battery isolation igniter -N253-

AUDI A3 2010 Overview of earth points in front part of vehicle

Overview of earth points in front part of vehicle

Get access to all wiring diagrams of the car

q	is dropped, from model year 2005

q	is dropped, from model year 2005

4 -	Earth point 4, on front of left longitudinal member -674-

q	Fitting location

q	applicable from model year 2005

q	is dropped from model year 2009

q	is dropped, from model year 2005

5 -	Earth point, on left headlight -655-

q	Fitting location

q	applicable from model year 2005

7 -	Earth point 1, on front of left longitudinal member -671-

q	Fitting location

q	is dropped from model year 2009

q	is dropped from model year 2009

q	Only right-hand drive models

Overview of earth points in interior of vehicle

Get access to all wiring diagrams of the car

5 -	Earth point (audio), under centre console, front -610-

q	Fitting location

8 -	Earth point, airbag control unit -637-

q	Fitting location

q	is dropped, from model year 2005

Overview of earth points in rear part of vehicle (3-door models)

Get access to all wiring diagrams of the car

q	for 5-door models ⇒ page Item

q	for 5-door models ⇒ page Item

q	for 5-door models ⇒ page Item

q	for 5-door models ⇒ page Item

Overview of earth points in rear part of vehicle (5-door models)

Get access to all wiring diagrams of the car

607	Earth point, on left in plenum chamber, windscreen wiper motor --Arrow--

Torque: 10 Nm

Get access to all wiring diagrams of the car

609	Earth point, on right in plenum chamber, near air quality sensor --Arrow--

Torque: 10 Nm

is dropped, from model year 2005

Get access to all wiring diagrams of the car

656	Earth point, on right headlight --Arrow--

Torque: 10 Nm

is dropped from model year 2009

Get access to all wiring diagrams of the car

673	Earth point 3, on front of left longitudinal member --Arrow--

Torque: 10 Nm

is dropped from model year 2009

Get access to all wiring diagrams of the car

671	Earth point 1, on front of left longitudinal member -Arrow A-

Torque: 15 Nm

674	Earth point 4 on front of left longitudinal member -Arrow B-

Torque: 10 Nm

applicable from model year 2005

is dropped from model year 2009

674	Earth point 4 on front of left longitudinal member -Arrow C-

Torque: 10 Nm

is dropped, from model year 2005

Get access to all wiring diagrams of the car

615	Earth point, on left suspension strut --Arrow--

43	Earth point, lower part of right A-pillar -Arrow A-

Torque: 10 Nm

44	Earth point, lower part of left A-pillar -Arrow A-

Torque: 10 Nm

610	Earth point (audio), front under centre console -Arrow A-

Torque: 10 Nm

662	Earth point, rear left side panel --Arrow--

Torque: 10 Nm

Earth point, in luggage compartment

Get access to all wiring diagrams of the car

51	Earth point, on right in luggage compartment --Arrow--

Torque: 20 Nm

Get access to all wiring diagrams of the car

53	Earth point, on right in rear lid --Arrow--

Torque: 10 Nm

Get access to all wiring diagrams of the car

61	Earth point, left C-pillar --Arrow--

Torque: 10 Nm

Get access to all wiring diagrams of the car

62	Earth point, right C-pillar --Arrow--

Torque: 10 Nm

Get access to all wiring diagrams of the car

AUDI A3 2010 Overview of control units

Overview of control units

Get access to all wiring diagrams of the car

1 -	Control units on right in luggage compartment

q	Components: -J345-, -J393-, -J446-, -J791-

q	Fitting location

q	Connector assignment-J345-

q	Connector assignment-J393-

q	Connector assignment-J446-/ -J791-

2 -

q	Location of -J415-

q	Location of -J86-

q	Location of -J146-

q	Location of -J44-

q	Connector assignment

Location:

A -	Parking aid control unit -J446-/ Park assist steering control unit -J791-

B -	Trailer detector control unit -J345-

C -	Convenience system central control unit -J393-

Get access to all wiring diagrams of the car

Connector assignment.

Get access to all wiring diagrams of the car

A -	Trailer detector control unit -J345-

Connector assignment.

Get access to all wiring diagrams of the car

A -	Convenience system central control unit -J393-

Connector assignment.

Get access to all wiring diagrams of the car

A -	Parking aid control unit -J446-

Control units on left in luggage compartment

All-wheel drive control unit -J492-

Connector assignment.

Get access to all wiring diagrams of the car

-	All-wheel drive control unit -J492-

Connector:

A -	2-pin connector -T2ax-

B -	8-pin connector -T8y-

Can't find your car? Check -> DiagnostData.com!