SEAT ALHAMBRA 2014 — Headlight washer system . Wiring diagrams, Pin Connector, Location

Wiring Diagram SEAT ALHAMBRA 2014 - Intermittent wiper switch - Rear wiper switch - Washer pump switch (automatic wash/wipe and headlight washer system) - Headlight washer system relay - Onboard supply control unit - Steering column electronics control unit - Headlight washer system pump

E22	Intermittent wiper switch
E34	Rear wiper switch
E44	Washer pump switch (automatic wash/wipe and headlight washer system)
J39	Headlight washer system relay, on left in engine compartment, under E-box Low
J519	Onboard supply control unit
J527	Steering column electronics control unit
SB22	Fuse 22 on fuse holder B
T2bq	2-pin connector
T16h	16-pin connector
T52b	52-pin connector
T52c	52-pin connector
V11	Headlight washer system pump
373	Earth connection 8, in main wiring harness
383	Earth connection 18, in main wiring harness
602	Earth point, in front left footwell
640	Earth point 2, left in engine compartment
B328	Positive connection 14 (30a) in main wiring harness
B397	Connection 1 (convenience CAN bus, high), in main wiring harness
B406	Connection 1 (convenience CAN bus, low), in main wiring harness
B660	Connection (diagnosis terminal 50), in main wiring harness

Wiring Diagram SEAT ALHAMBRA 2014 - Windscreen washer fluid level sender - Data bus diagnostic interface - Dash panel insert

G33	Windscreen washer fluid level sender
J285	Control unit in dash panel insert
J533	Data bus diagnostic interface
K	Dash panel insert
K37	Washer fluid level warning lamp
T2bh	2-pin connector
T20	20-pin connector
T32	32-pin connector
410	Earth connection 1 (sender earth) in main wiring harness
411	Earth connection 2 (sender earth) in main wiring harness
B397	Connection 1 (convenience CAN bus, high), in main wiring harness
B398	Connection 2 (convenience CAN bus, high), in main wiring harness
B406	Connection 1 (convenience CAN bus, low), in main wiring harness
B407	Connection 2 (convenience CAN bus, low), in main wiring harness
*	Up to November 2011
*2	From November 2011

SEAT ALHAMBRA 2014 Overview of relay carriers

Overview of relay carriers

1 -	Relay carrier in engine compartment, on E-box low

q	Relay assignment, from September 2010 → Anchor

2 -	Relay carrier in engine compartment, below E-box low

q	Relay assignment, from September 2010 → Anchor

q	Relay assignment, from May 2011 → Anchor

3 -	Relay carrier in interior, on left behind dash panel

q	Relay assignment, from September 2010 → Anchor

q	Relay assignment, from May 2011 → Anchor

4 -	Fuse/relay carrier (SR1),interior, on left under dash panel

q	Relay assignment, from September 2010 → Anchor

5 -	Fuse/relay carrier (SR2), rear left

q	Relay assignment, from September 2010 → Anchor

Relay assignment in engine compartment, on E-box low, from September 2010 R1 -  Engine components current supply relay -J757-3 R1 -  Connection bridge 2 R2 -  Main relay -J271-1 R2 -  Terminal​ 30​ voltage​ supply​ relay​ -J317-2 1 Only models with a petrol engine 2 Only models with a diesel engine 3 Only engine code CCZA Back to overview → Anchor

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Relay assignment in engine compartment, under E-box low, from September 2010 1 -  Starter relay 1 -J906-1 2 -  Automatic​ glow​ period​ control​ unit -J179-2 3 -  Vacant 4 -  Vacant 5 -  Starter relay 2 -J907-1 5 -  Terminal 50 voltage supply relay -J682-3 6 -  Vacant 1 Only models with start/stop system 2 Only models with a diesel engine 3 Only models with no start/stop system but with Kessy Back to overview → Anchor

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Relay assignment in engine compartment, under E-box low, from May 2011 1 -  Starter relay 1 -J906-1 2 -  Automatic​ glow​ period​ control​ unit -J179-2 3 -  Dual tone horn relay -J4- 4 -  Headlight washer system relay -J39- 5 -  Starter relay 2 -J907-1 5 -  Terminal 50 voltage supply relay -J682-3 6 -  Additional coolant pump relay -J496- 1 Only models with start/stop system 2 Only models with a diesel engine 3 Only models with no start/stop system but with Kessy Back to overview → Anchor

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Relay carrier in interior, on left behind dash panel, from September 2010

1 -	Terminal 50 voltage supply relay -J682-

q	Only models without start/stop system

2 -	Heated rear window relay -J9-

3 -	Auxiliary heater operation relay -J485-

q	Only models with auxiliary heater

3 -	Low heat output relay -J359-

q	Only models with auxiliary air heater

4 -

Vacant

5 -

Vacant

6 -	Fresh air blower relay -J13-

q	Only models with auxiliary heater

7 -

Vacant

8 -	Additional coolant pump relay -J496-

q	Only models with a petrol engine

q	From May 2011, on relay carrier in engine compartment under E-box low → Anchor

8 -	Dual tone horn relay -J4-

q	From May 2011, on relay carrier in engine compartment under E-box low → Anchor

9 -	Headlight washer system relay -J39-

q	From May 2011, on relay carrier in engine compartment under E-box low → Anchor

Back to overview → Anchor

Relay carrier in interior, on left behind dash panel, from May 2011

1 -	Terminal 50 voltage supply relay -J682-

q	Only models without start/stop system

2 -	Heated rear window relay -J9-

3 -	Auxiliary heater operation relay -J485-

q	Only models with auxiliary heater

3 -	Low heat output relay -J359-

q	Only models with auxiliary air heater

4 -

Vacant

5 -

Vacant

6 -	Fresh air blower relay -J13-

q	Only models with auxiliary heater

7 -

Vacant

8 -

Vacant

9 -

Vacant

Back to overview → Anchor

Fuse/relay carrier (SR1) in interior, on left under dash panel, from September 2010

1 -	High heat output relay -J360-

q	Only models with auxiliary air heater

In right-hand drive models at position 5 (to the left of 4)

2 -	Terminal​ 75​ voltage​ supply​ relay​ 1 -J680-

3 -	Terminal 15 voltage supply relay 2 -J681-

4 -	Heated windscreen relay -J47-

Back to overview → Anchor

Fuse/relay carrier (SR2), rear left, from September 2010 1 -  Trailer voltage supply relay -J941- Back to overview → Anchor

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SEAT ALHAMBRA 2014 Overview of control units

Overview of control units

1 -	Headlight range control unit -J431-

q	Fitting location → Chapter

2 -	Fresh air blower control unit -J126-

q	Fitting location → Chapter

3 -	Mobile telephone operating electronics control unit -J412-

q	Fitting location, without optional equipment MEDIA-IN multimedia socket → Chapter

q	Fitting location, with optional equipment MEDIA-IN multimedia socket → Chapter

4 -	Front passenger door control unit -J387-

q	Fitting location → Chapter

5 -	Multimedia system control unit -J650-

q	Fitting location → Chapter

6 -	Control​ unit​ for​ electromechanical​ parking​ brake -J540-

q	Fitting location → Chapter

7 -	Special vehicle control unit -J608-

q	Fitting location → Chapter

8 -	Digital sound package amplifier -R184-

q	Fitting location → Chapter

9 -	Driver door control unit -J386-

q	Fitting location → Chapter

10 -	Driver seat adjustment control unit -J810-

q	Fitting location → Chapter

11 -	Heated front seats control unit -J774-

q	Fitting location to May 2011 → Chapter

q	Fitting location from May 2011 → Chapter

12 -	Multifunction steering wheel control unit -J453-

q	Fitting location → Chapter

13 -	Steering column electronics control unit -J527-

q	Fitting location → Chapter

14 -	Electronic steering column lock control unit -J764-

q	Fitting location → Chapter

15 -	Parking​ aid​ control​ unit -J446- / park assist steering control unit -J791-

q	Fitting location → Chapter

16 -	Onboard supply control unit -J519-

q	Fitting location → Chapter

17 -	Dash panel insert -K- / dash panel insert control unit -J285- / anti-theft immobilizer control unit -J362-

q	Connector assignment → Chapter

18 -	Entry​ and​ start​ authorisation​ control​ unit​ -J518-

q	Fitting location → Chapter

19 -	Data bus diagnostic interface -J533-

q	Fitting location → Chapter

20 -	Sliding sunroof control unit -J245-

q	Fitting location → Chapter

21 -	Airbag​ control​ unit​ -J234-

q	Fitting location → Chapter

22 -	Radio -R- / Control​ unit​ with​ display​ for​ radio​ and​ navigation​ system​ -J503-

q	Fitting location: dash panel, centre

23 -	Climatronic control unit -J255- / air conditioning system control unit -J301-

q	Fitting location Climatronic control unit → Chapter

q	Fitting location air conditioning control unit → Chapter

24 -	Automatic anti-dazzle interior mirror -Y7-

q	Fitting location → Chapter

25 -	Voltage stabiliser -J532-

q	Fitting location for left-hand drive vehicles → Chapter

q	Fitting location for right-hand drive vehicles → Chapter

Headlight range control unit -J431-

1 -	Headlight range control unit -J431-

Fitting location:

q	Behind the glove compartment, near A-pillar, front passenger side

Connector:

q	-A-26-pin connector -T26-

Back to overview → Anchor

SEAT ALHAMBRA 2014 Fresh air blower control unit J126

Fresh air blower control unit -J126-

1 -	Fresh air blower control unit -J126-

Fitting location:

q	on heater and air conditioner unit, front passenger footwell

Connectors:

q	-A-2-pin connector -T2et-

q	-B-6-pin connector -T6ao-

Back to overview → Anchor

SEAT ALHAMBRA 2014 Mobile telephone operating electronics control unit J412

Mobile telephone operating electronics control unit -J412-

1 -	Mobile telephone operating electronics control unit -J412-

q	Without optional equipment MEDIA-IN multimedia socket

Fitting location:

q	under front passenger seat

Connector:

2 -	54-pin connector -T54-

Back to overview → Anchor

SEAT ALHAMBRA 2014 Mobile telephone operating electronics control unit J412

Mobile telephone operating electronics control unit -J412-

1 -	Mobile telephone operating electronics control unit -J412-

q	With optional equipment MEDIA-IN multimedia socket

Fitting location:

q	In centre console

Connector:

-A-54-pin connector -T54-

Back to overview → Anchor

SEAT ALHAMBRA 2014 Front passenger door control unit J387

Front passenger door control unit -J387-

1 -	Front passenger door control unit -J387-

Fitting location:

q	in front passenger door

Connectors:

q	-A-6-pin connector -T6a-

q	-B-20-pin connector -T20b-

q	-C-16-pin connector -T16d-

q	-D-32-pin connector -T32c-

Back to overview → Anchor

SEAT ALHAMBRA 2014 Multimedia system control unit J650

Multimedia system control unit -J650-

1 -	Multimedia system control unit -J650-

Fitting location:

q	near front armrest

Connector:

q	-A-12-pin connector -T12h-

Back to overview → Anchor

SEAT ALHAMBRA 2014 Control​ unit​ for​ electromechanical​ parking​ brake J540

Control​ unit​ for​ electromechanical​ parking​ brake -J540-

1 -	Control​ unit​ for​ electromechanical​ parking​ brake -J540-

Fitting location:

q	Under centre console, near front arm rest

Connector:

q	-A-30-pin connector -T30-

Back to overview → Anchor

SEAT ALHAMBRA 2014 Special vehicle control unit J608

Special vehicle control unit -J608-

1 -	Special vehicle control unit -J608-

Fitting location:

q	under driver seat

Connectors:

q	-A-12-pin connector -T12j-

q	-B-16-pin connector -T16o-

q	-C-12-pin connector -T12- , reserve

q	-D-20-pin connector -T20h-

q	-E-16-pin connector -T16p-

Back to overview → Anchor

SEAT ALHAMBRA 2014 Digital sound package amplifier R184

Digital sound package amplifier -R184-

1 -	Digital sound package amplifier -R184-

Fitting location:

q	under driver seat

Connector:

q	-A-38-pin connector -T38a-

Back to overview → Anchor

SEAT ALHAMBRA 2014 Driver door control unit J386

Driver door control unit -J386-

1 -	Driver door control unit -J386-

Fitting location:

q

in door

Connectors:

q	-A-6-pin connector -T6-

q	-B-20-pin connector -T20a-

q	-C-16-pin connector -T16c-

q	-D-32-pin connector -T32b-

Back to overview → Anchor

SEAT ALHAMBRA 2014 Driver seat adjustment control unit J810

Driver seat adjustment control unit -J810-

1 -	Driver seat adjustment control unit -J810-

Fitting location:

q	on base of driver seat

Connectors:

q	-A-12-pin connector -T12c-

q	-B-32-pin connector -T32a-

q	-C-16 pin connector -T16b-

q	-D-10-pin connector -T10-

Back to overview → Anchor

SEAT ALHAMBRA 2014 Heated front seats control unit J774

Heated front seats control unit -J774-

1 -	Heated front seats control unit -J774-

Fitting location up to May 2011

q	on base of driver seat

Connector:

q	-A-8-pin connector -T8-

Back to overview → Anchor

SEAT ALHAMBRA 2014 Heated front seats control unit J774

Heated front seats control unit -J774-

1 -	Heated front seats control unit -J774-

Fitting location from May 2011

q	in the centre console behind the air conditioning control panel

Connector:

q	-A-8-pin connector -T8-

Back to overview → Anchor

SEAT ALHAMBRA 2014 Multifunction steering wheel control unit J453

Multifunction steering wheel control unit -J453-

1 -	Multifunction steering wheel control unit -J453-

Fitting location:

q	in operating unit of the multifunction buttons on left of steering wheel -E440-

Connectors:

q	-A-6-pin connector -T6aw-

q	-B-12-pin connector -T12l-

Back to overview → Anchor

SEAT ALHAMBRA 2014

Steering column electronics control unit -J527-

1 -	Steering column electronics control unit -J527-

Fitting location:

q	Near steering column switch

Connectors:

q	-A-16-pin connector -T16h-

q	-B-4-pin connector -T4-

Back to overview → Anchor

SEAT ALHAMBRA 2014

Electronic steering column lock control unit -J764-

1 -	Electronic steering column lock control unit -J764-

Fitting location:

q	Behind steering column trim

Connector:

q	-A-16-pin connector -T16m-

Back to overview → Anchor

SEAT ALHAMBRA 2014

Parking​ aid​ control​ unit -J446- / park assist steering control unit -J791-

1 -	Parking​ aid​ control​ unit -J446- / park assist steering control unit -J791-

Fitting location:

q	near onboard supply control unit

Connectors:

q	-A-16-pin connector -T16a-

q	-B-12-pin connector -T12a-

q	-C-12-pin connector -T12b-

Back to overview → Anchor

SEAT ALHAMBRA 2014

Onboard supply control unit -J519-

1 -	Onboard supply control unit -J519-

Fitting location:

q	near fuse holder

Connectors:

q	-A-52-pin connector -T52a-

q	-B-52-pin connector -T52b-

q	-C-52-pin connector -T52c-

Back to overview → Anchor

SEAT ALHAMBRA 2014

Dash panel insert -K- / control unit in dash panel insert -J285- / immobiliser control unit -J362-

1 -	Dash panel insert -K- / control unit in dash panel insert -J285- / immobiliser control unit -J362-

Connector:

q	-A-32-pin connector -T32-

Back to overview → Anchor

SEAT ALHAMBRA 2014

Entry​ and​ start​ authorisation​ control​ unit​ -J518-

1 -	Entry​ and​ start​ authorisation​ control​ unit​ -J518-

Fitting location:

q	next to steering column, near centre console

Connector:

q	-A-32-pin connector -T32d-

Back to overview → Anchor

SEAT ALHAMBRA 2014

Data bus diagnostic interface -J533-

1 -	Data bus diagnostic interface -J533-

Fitting location:

q	next to steering column, near centre console

Connector:

q	-A-20-pin connector -T20-

Back to overview → Anchor

SEAT ALHAMBRA 2014

Sliding sunroof control unit -J245-

1 -	Sliding sunroof control unit -J245-

Connector:

q	-A-16-pin​ connector​ -T16l-

Back to overview → Anchor

SEAT ALHAMBRA 2014

Airbag​ control​ unit​ -J234-

1 -	Airbag​ control​ unit​ -J234-

Fitting location:

q	under centre console, front

Connector:

q	-A-100-pin connector -T100-

Back to overview → Anchor

SEAT ALHAMBRA 2014 Climatronic control unit J255

Climatronic control unit -J255-

1 -	Climatronic control unit -J255-

Fitting location:

q	In centre console

Connectors:

q	-A-20-pin connector -T20g-

q	-B-16-pin connector -T16j-

q	-C-16-pin connector -T16k-

Back to overview → Anchor

SEAT ALHAMBRA 2014 Air​ conditioning​ system​ control​ unit​ J301

Air​ conditioning​ system​ control​ unit​ -J301-

1 -	Air​ conditioning​ system​ control​ unit​ -J301-

Fitting location:

q	In centre console

Connectors:

q	-A-20-pin connector -T20f-

q	-B-16-pin connector -T16i-

q	-C-5-pin connector -T5-

Back to overview → Anchor

SEAT ALHAMBRA 2014 Automatic anti-dazzle interior mirror Y7

Automatic anti-dazzle interior mirror -Y7-

1 -	Automatic anti-dazzle interior mirror -Y7-

Connector:

q	-A-8-pin connector -T8e-

Back to overview → Anchor

SEAT ALHAMBRA 2014 Voltage stabiliser J532

Voltage stabiliser -J532-

1 -	Voltage stabiliser -J532-

Fitting location:

q	on heater and air conditioner unit, front passenger footwell

Connector:

q	-A-10-pin connector -T10k-

From May 2011, see chapter Fitting locations: Control units in engine compartment

Back to overview → Anchor

SEAT ALHAMBRA 2014 Voltage stabiliser J532

Voltage stabiliser -J532-

1 -	Voltage stabiliser -J532-

Fitting location:

q	behind centre console

Connector:

q	-A-10-pin connector -T10k-

From May 2011, see chapter Fitting locations: Control units in engine compartment

Back to overview → Anchor

SEAT ALHAMBRA 2014 Overview of fuses

Overview of fuses

1 -	Fuse holder A -SA-

q	Fitting location → Anchor

q	Assignment of fuses in E-box low from September 2010 → Anchor

1 -	Fuse holder B -SB-

q	Fitting location → Anchor

q	Assignment of fuses in E-box low from September 2010 → Anchor

q	Assignment of fuses in E-box low from May 2011 → Anchor

2 -	Fuse and relay carrier SR1

q	Fitting location → Anchor

q	Fuse assignment, from September 2010 → Anchor

3 -	Fuse holder C -SC-

q	Fitting location → Anchor

q	Fuse assignment, from September 2010 → Anchor

q	Fuse assignment, from May 2011 → Anchor

q	Fuse assignment, from May 2013 → Anchor

4 -	Fuse holder D -SD-

q	Fitting location → Anchor

q	Fuse assignment, from September 2010 → Anchor

q	Fuse assignment, from May 2013 → Anchor

Fuse holder A (SA) on E-Box low, on left in engine compartment Specified torque settings ⇒ Electrical system, Repair Group 97, Removing and installing fuse holders Fuse colours Multifuse strip fuse   Note The fuse strip (multifuse) must be replaced as a complete unit. Back to overview → Anchor

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Fuse assignment (SA) from September 2010

No.		Current Flow Diagram designation	Nominal value		Function/component	Terminal
SA 1	B1	Fuse 1 on fuse holder A -SA1-	150A		Alternator -C- (140 A)	30
			200A		Alternator -C- (180 A)	30
SA 2	C1	Fuse 2 on fuse holder A -SA2-	80 A		Power steering control unit -J500-	30
SA 3	E1	Fuse 3 on fuse holder A -SA3-	80A		Radiator fan control unit -J293-	30
SA 4	H1	Fuse 4 on fuse holder A -SA4-	80A		Fuse holder D -SD-	30
SA 5	D1	Fuse 5 on fuse holder A -SA5-	100A		Fuse holder C -SC- , 20-pin current bridge	30
508	AM1	Threaded connection (30) on E-box -508-			Terminal 30 wiring junction -TV2-	30
SA 6	F1	Fuse 6 on fuse holder A -SA6-	50A		Heated windscreen relay -J47-	30
SA 7	N1	Fuse 7 on fuse holder A -SA7-	70A		High heat output relay -J360-	30
SA 8	G1	Fuse 8 on fuse holder A -SA8-	60A		Thermal fuse 2 -S362- rear right sliding door	30
					Driver seat adjustment thermal fuse 1 -S44-	30
					Front passenger seat adjustment thermal fuse 1 -S46-	30

Back to overview → Anchor

Fuse holder B (SB) on E-box low, on left in engine compartment

-	Fuse colours

50 A - red

40 A - orange

30 A - light-green

25 A - natural (white)

20 A - yellow

15 A - light blue

10 A - red

7.5 A - brown

5 A - light-brown

3 A - purple

Back to overview → Anchor

Fuse assignment (SB), from September 2010

No.		Current Flow Diagram designation	Nominal value		Function/component	Terminal
F1	-	Fuse 1 on fuse holder B -SB1-	30A		Voltage stabiliser -J532-	30
F2	-	Fuse 2 on fuse holder B -SB2-	30A		Onboard supply control unit -J519- , (T52b/42)	30
					# terminal 30 power
F3	-	Fuse 3 on fuse holder B -SB3-	30A		ABS control unit -J104-	30
F4	-	Fuse 4 on fuse holder B -SB4-	30A		Onboard supply control unit -J519- (T52a/1)	30
					# terminal 30, left light supply
F5	-	Fuse 5 on fuse holder B -SB5-	5A		Onboard supply control unit -J519- , (T52a/24)	30
					# terminal 30, reference
					Battery​ monitor​ control​ unit​ -J367-	30
F6	-	Fuse 6 on fuse holder B -SB6-	30A		Onboard supply control unit -J519- (T52c/42)	30
					# terminal 30, right light supply
F7	-	Fuse 7 on fuse holder B -SB7-	25A		Dual tone horn relay -J4-	30
					Heated windscreen relay -J47-	30
F8	-	Fuse 8 on fuse holder B -SB8-	30 A		Digital sound package amplifier -R184-	30
F9	-	Fuse 9 on fuse holder B -S9-	20A		Control​ unit​ with​ display​ for​ radio​ and​ navigation -J503-4	30
F10	-	Fuse 10 on fuse holder B -SB10-	30A		Engine control unit -J623-	87
F11	-	Fuse 11 on fuse holder B -SB11-	5A		Data bus diagnostic interface -J533-	30
F12	-	Fuse 12 on fuse holder B -SB12-	15A		Mechatronic unit for dual clutch gearbox -J743-	30
F13	-	Fuse 13 on fuse holder -SB13-	5A		Engine control unit -J623-	30
					Main relay -J271-	30
					Fuse 14 on fuse holder B -SB14-	87
					Fuse 16 on fuse holder B -SB16-	87
					Fuse 18 on fuse holder B -SB18-	87
					Fuse 20 on fuse holder B -SB20-	87
					Fuse 23 on fuse holder B -SB23-	87
					Fuse 24 on fuse holder B -SB24-	87
F14	-	Fuse 14 on fuse holder B -SB14-	10A		Reducing agent pump -V437-1	87
			30A		Ignition coil 1 with output stage -N70-	87
					Ignition coil 2 with output stage -N127-	87
					Ignition coil 3 with output stage -N291-	87
					Ignition coil 4 with output stage -N292-	87
F15	-	Fuse 15 on fuse holder B -SB15-	-		Vacant	30
F16	-	Fuse 16 on fuse holder B -SB16-	30A		Reducing-agent heater control unit -J891-1	87
			15A		Lambda probe -G39-	87
					Lambda probe after catalytic converter -G130-	87
					Magnetic clutch for supercharger -N421-	87
F17	-	Fuse 17 on fuse holder B -SB17-	20A		Fuel pressure regulating valve -N276-	87
F18	-	Fuse 18 on fuse holder B -SB18-	30A		Fuel pump control unit -J538-	87
F19	-	Fuse 19 on fuse holder B -SB19-	30 A		Wiper motor control unit -J400-	87
F20	-	Fuse 20 on fuse holder B -SB20-	15A		Additional coolant pump relay -J496-2	87
					Lambda probe -G39-1	87
					NOx sender control unit -J583-1	87
					Air mass meter -G70-1	87
F21	-	Fuse 21 on fuse holder B -SB21-	20 A		Auxiliary heater control unit -J364-	30
F22	-	Fuse 22 on fuse holder B -SB22-	30A		Rear air recirculation blower -V242-5	30
F23	-	Fuse 23 on fuse holder B -SB23-	15 A		Charge​ pressure​ control​ solenoid​ valve -N75-1	87
					Crankcase​ breather​ heater​ element -N79-1	87
					Automatic​ glow​ period​ control​ unit -J179-1	87
					Exhaust gas recirculation cooler changeover valve -N345-1	87
					Fuel metering valve -N290-1	87
					Fuel pressure regulating valve -N276-1	87
					Coolant circulation pump 2 -V178-1	87
					Additional coolant pump relay -J496-2	87
					Clutch position sender -G476-	87
F24	-	Fuse 24 on fuse holder B -SB24-	10A		Engine component current supply relay -J757-2 , 3	87
					#Fuse 17 on fuse holder B -SB17-2
					#Fuse 28 on fuse holder B -SB28-1
					Radiator fan control unit -J293-	87
					Turbocharger air recirculation valve -N249-	87
					Activated charcoal filter system solenoid valve 1 -N80-	87
					Camshaft​ control​ valve​ 1 -N205-	87
					Charge​ pressure​ control​ solenoid​ valve -N75-2	87
					Low heat output relay -J359-	87
					High heat output relay -J360-	87
F25	-	Fuse 25 fuse holder B -SB25-	40A		ABS control unit -J104-	30
F26	-	Fuse 26 on fuse holder B -SB26-	40A		Fresh air blower control unit -J126-	30
					Low heat output relay -J359-	30
F27	-	Fuse 27 on fuse holder B -SB27-	50A		Terminal 15 voltage supply relay 2 -J681-	30
F28	-	Fuse 28 on fuse holder B -SB28-	50 A		Automatic glow period control unit -J179-	30, (87)
F29	-	Fuse 29 on fuse holder B -SB29-	40A		Fuse 17 on fuse holder C -SC17-	30
					Fuse 18 on fuse holder C -SC18-	30
					Fuse 36 on fuse holder C -SC36-	30
					Fuse 37 on fuse holder C -SC37-	30
					Fuse 38 on fuse holder C -SC38-	30
					Fuse 39 on fuse holder C -SC39-	30
					Fuse 40 on fuse holder C -SC40-	30
					Fuse 41 on fuse holder C -SC41-	30
					Fuse 58 on fuse holder C -SC58-	30
F30	-	Fuse 30 on fuse holder B -SB30-	50A		Terminal​ 75​ voltage​ supply​ relay​ 1 -J680-	30
1 Diesel
2 Petrol
3 Bridge only with Diesel, else relay J757
4 Only models with no start/stop system
5 See fuse assignment (SC), from May 2011

Back to overview → Anchor

Fuse assignment (SB), from May 2011

No.		Current Flow Diagram designation	Nominal value		Function/component	Terminal
F1	-	Fuse 1 on fuse holder B -SB1-	30A		Voltage stabiliser -J532-	30
F2	-	Fuse 2 on fuse holder B -SB2-	30A		Onboard supply control unit -J519- , (T52b/42)	30
					# terminal 30 power
F3	-	Fuse 3 on fuse holder B -SB3-	30A		ABS control unit -J104-	30
F4	-	Fuse 4 on fuse holder B -SB4-	30A		Onboard supply control unit -J519- (T52a/1)	30
					# terminal 30, left light supply
F5	-	Fuse 5 on fuse holder B -SB5-	5A		Onboard supply control unit -J519- , (T52a/24)	30
					# terminal 30, reference
					Battery​ monitor​ control​ unit​ -J367-	30
F6	-	Fuse 6 on fuse holder B -SB6-	30A		Onboard supply control unit -J519- (T52c/42)	30
					# terminal 30, right light supply
F7	-	Fuse 7 on fuse holder B -SB7-	25A		Dual tone horn relay -J4-	30
					Heated windscreen relay -J47-	30
F8	-	Fuse 8 on fuse holder B -SB8-	30 A		Digital sound package amplifier -R184-	30
F9	-	Fuse 9 on fuse holder B -S9-	20A		Control​ unit​ with​ display​ for​ radio​ and​ navigation -J503-4	30
F10	-	Fuse 10 on fuse holder B -SB10-	30A		Engine control unit -J623-	87
F11	-	Fuse 11 on fuse holder B -SB11-	5A		Data bus diagnostic interface -J533-	30
F12	-	Fuse 12 on fuse holder B -SB12-	15A		Mechatronic unit for dual clutch gearbox -J743-	30
F13	-	Fuse 13 on fuse holder -SB13-	5A		Engine control unit -J623-	30
					Main relay -J271-	30
					Fuse 14 on fuse holder B -SB14-	87
					Fuse 16 on fuse holder B -SB16-	87
					Fuse 18 on fuse holder B -SB18-	87
					Fuse 20 on fuse holder B -SB20-	87
					Fuse 23 on fuse holder B -SB23-	87
					Fuse 24 on fuse holder B -SB24-	87
F14	-	Fuse 14 on fuse holder B -SB14-	10A		Reducing agent pump -V437-1	87
			30A		Ignition coil 1 with output stage -N70-	87
					Ignition coil 2 with output stage -N127-	87
					Ignition coil 3 with output stage -N291-	87
					Ignition coil 4 with output stage -N292-	87
F15	-	Fuse 15 on fuse holder B -SB15-	-		Vacant	30
F16	-	Fuse 16 on fuse holder B -SB16-	30A		Reducing-agent heater control unit -J891-1	87
			15A		Lambda probe -G39-	87
					Lambda probe after catalytic converter -G130-	87
					Magnetic clutch for supercharger -N421-	87
F17	-	Fuse 17 on fuse holder B -SB17-	15A		Fuel pressure regulating valve -N276-	87
F18	-	Fuse 18 on fuse holder B -SB18-	30A		Fuel pump control unit -J538-	87
F19	-	Fuse 19 on fuse holder B -SB19-	30 A		Wiper motor control unit -J400-	87
F20	-	Fuse 20 on fuse holder B -SB20-	15A		Additional coolant pump relay -J496-2	87
					Lambda probe -G39-1	87
					NOx sender control unit -J583-1	87
					Air mass meter -G70-1	87
F21	-	Fuse 21 on fuse holder B -SB21-	20 A		Auxiliary heater control unit -J364-	30
F22	-	Fuse 22 on fuse holder B -SB22-	20A		Headlight washer system relay -J39-	30
F23	-	Fuse 23 on fuse holder B -SB23-	15 A		Charge​ pressure​ control​ solenoid​ valve -N75-1	87
					Crankcase​ breather​ heater​ element -N79-1	87
					Automatic​ glow​ period​ control​ unit -J179-1	87
					Exhaust gas recirculation cooler changeover valve -N345-1	87
					Fuel metering valve -N290-1	87
					Fuel pressure regulating valve -N276-1	87
					Coolant circulation pump 2 -V178-1	87
					Additional coolant pump relay -J496-2	87
					Clutch position sender -G476-	87
					Brake​ light​ switch -F-5	87
F24	-	Fuse 24 on fuse holder B -SB24-	10A		Engine component current supply relay -J757-2 , 3	87
					#Fuse 17 on fuse holder B -SB17-2
					#Fuse 28 on fuse holder B -SB28-1
					Radiator fan control unit -J293-	87
					Turbocharger air recirculation valve -N249-	87
					Activated charcoal filter system solenoid valve 1 -N80-	87
					Camshaft​ control​ valve​ 1 -N205-	87
					Charge​ pressure​ control​ solenoid​ valve -N75-2	87
					Low heat output relay -J359-	87
					High heat output relay -J360-	87
F25	-	Fuse 25 fuse holder B -SB25-	40A		ABS control unit -J104-	30
F26	-	Fuse 26 on fuse holder B -SB26-	40A		Fresh air blower control unit -J126-	30
					Low heat output relay -J359-	30
F27	-	Fuse 27 on fuse holder B -SB27-	50A		Terminal 15 voltage supply relay 2 -J681-	30
F28	-	Fuse 28 on fuse holder B -SB28-	50 A		Automatic glow period control unit -J179-	30, (87)
F29	-	Fuse 29 on fuse holder B -SB29-	40A		Fuse 17 on fuse holder C -SC17-	30
					Fuse 18 on fuse holder C -SC18-	30
					Fuse 36 on fuse holder C -SC36-	30
					Fuse 37 on fuse holder C -SC37-	30
					Fuse 38 on fuse holder C -SC38-	30
					Fuse 39 on fuse holder C -SC39-	30
					Fuse 40 on fuse holder C -SC40-	30
					Fuse 41 on fuse holder C -SC41-	30
					Fuse 58 on fuse holder C -SC58-	30
F30	-	Fuse 30 on fuse holder B -SB30-	50A		Terminal​ 75​ voltage​ supply​ relay​ 1 -J680-	30
1 Diesel
2 Petrol
3 Bridge only with Diesel, else relay J757
4 Only models with no start/stop system
5 From November 2011

Back to overview → Anchor

Fuse holder C (SC) under left dash panel

-	Fuse colours

50 A - red

40 A - orange

30 A - light-green

25 A - natural (white)

20 A - yellow

15 A - light blue

10 A - red

7.5 A - brown

5 A - light-brown

3 A - purple

Back to overview → Anchor

Fuse assignment, from September 2010

No.		Current Flow Diagram designation	Nominal value		Function/component	Terminal
1		Fuse 1 on fuse holder C -SC1-	-		Vacant	15
2		Fuse 2 on fuse holder C -SC2-	-		Vacant	15
3		Fuse 3 on fuse holder C -SC3-	-		Vacant	15
4		Fuse 4 on fuse holder C -SC4-	10A		DC/AC converter with socket, 12V-230V -U13-	15
					Voltage stabiliser -J532-	15
					Starter relay 1 -J906-1
					Starter relay 2 -J907-1	15
5		Fuse 5 on fuse holder C -SC5-	10A		Electronically controlled damping control unit -J250-	15
6		Fuse 6 on fuse holder C -SC6-	-		Vacant	15
7		Fuse 7 on fuse holder C -SC7-	-		Vacant	15
8		Fuse 8 on fuse holder C -SC8-	-		Vacant	15
9		Fuse 9 on fuse holder C -SC9-	7.5A		Front passenger side airbag deactivated warning lamp -K145-	15
					Airbag​ control​ unit​ -J234-	15
10		Fuse 10 on fuse holder C -SC10-	5A		Taxi meter -G41-	15
					Mirror taxi meter -G511-	15
					Control unit for taxi alarm remote control -J601-	15
11		Fuse 11 on fuse holder C -SC11-	10A		All-wheel drive control unit -J492-	15
12		Fuse 12 on fuse holder C -SC12-	10A		Left gas discharge light -L13-	15
13		Fuse 13 on fuse holder C -SC13-	5A		Electromechanical parking brake button -E538-	15
					Oil level and oil temperature sender -G266-	15
					Reversing light switch -F4-	15
					Operating unit in front of centre console -E461-	15
					High-pressure sender -G65-	15
					Parking aid control unit -J446-	15
					Interior mirror -EX5-	15
14		Fuse 14 on fuse holder C -SC14-	7.5A		Light switch -E1-	15
					Trailer detector control unit -J345-	15
					Control​ unit​ for​ electromechanical​ parking​ brake -J540-	15
					ABS control unit -J104-	15
					Brake light switch -F-	15
					Power steering control unit -J500-	15
					Engine control unit -J623-	15
					Data bus diagnostic interface -J533-	15
					Control unit in dash panel insert -J285-	15
15		Fuse 15 on fuse holder C -SC15-	10A		Auxiliary heater operation relay -J485-	15
					Diagnostic connection -U31-	15
					Left headlight -MX1- , not Xenon	15
					Right​ headlight -MX2- , not Xenon	15
					Control unit for bend lighting and headlight range control​ -J745-	15
					Switch and instrument illumination regulator -E20-	15
					Air mass meter -G70-	15
16		Fuse 16 on fuse holder C -SC16-	10A		Right gas discharge bulb -L14-	15
17		Fuse 17 on fuse holder C -SC17-	5A		Mobile telephone operating electronics control unit -J412-	30
18		Fuse 18 on fuse holder C -SC18-	7.5A		Control unit for taxi alarm remote control -J601-	30
					Data transmission control unit -J753-	30
19		Fuse 19 on fuse holder C -SC19-	-		Vacant
20		Fuse 20 on fuse holder C -SC20-	5A		ABS control unit -J104-	30
21		Fuse 21 on fuse holder C -SC21-	5A		2nd heat exchanger switch-off valve -N317-	30
22		Fuse 22 on fuse holder C -SC22-	7.5A		Rain and light sensor -G397-	30
					Diagnostic connection -U31-	30
					Reversing camera system control unit -J772-	30
					Light switch -E1-	30
23		Fuse 23 on fuse holder C -SC23-	7.5A		Selector lever sensors control unit -J587-	30
					Electromechanical parking brake button -E538-	30
					Climatronic control unit -J255-	30
					Air​ conditioning​ system​ control​ unit​ -J301-	30
					Operating​ and​ display​ unit​ for​ rear​ air​ conditioning​ system -E265-	30
					Rear blower regulation sensor -G463-	30
					Remote control receiver for auxiliary coolant heater -R149-	30
24		Fuse 24 on fuse holder C -SC24-	7.5A		Entry​ and​ start​ authorisation​ control​ unit​ -J518-	30
25		Fuse 25 on fuse holder C -SC25-	7.5A		Mechatronic unit for dual clutch gearbox -J743-	15
					Selector lever sensors control unit -J587-	15
26		Fuse 26 on fuse holder C -SC26-	5A		Air quality sensor -G238-	15
27		Fuse 27 on fuse holder C -SC27-	-		Vacant
28		Fuse 28 on fuse holder C -SC28-	10A		Rear window wiper motor -V12-	75
29		Fuse 29 on fuse holder C -SC29-	30A		12V socket -U5-	75
					12V socket 3 -U19-	75
					Blocking diode -J29-	75
30		Fuse 30 on fuse holder C -SC30-	30A		Cigarette lighter -U1-	75
					12V socket 2 -U18-	75
					Onboard supply control unit -J519- (T52c/21)	75
					# Terminal 75 diagnosis feedback
31		Fuse 31 on fuse holder C -SC31-	-		Vacant	75
32		Fuse 32 on fuse holder C -SC32-	-		Vacant	75
33		Fuse 33 on fuse holder C -SC33-	-		Vacant	75
34		Fuse 34 on fuse holder C -SC34-	-		Vacant	75
35		Fuse 35 on fuse holder C -SC35-	-		Vacant	75
36		Fuse 36 on fuse holder C -SC36-	30A		Control​ unit​ for​ electromechanical​ parking​ brake -J540-	30
37		Fuse 37 on fuse holder C -SC37-	10A		Two-way radio unit -R8-	30
			25A		Sliding sunroof control unit -J245-	30
38		Fuse 38 on fuse holder C -SC38-	10A		Taxi meter -G41-	30
					Mirror taxi meter -G511-	30
					Front interior light button -E326-	30
					Taxi sign switch -E138-	30
					Taxi alarm active button -E485-	30
			30A		Sunroof roller blind control unit -J394-	30
39		Fuse 39 on fuse holder C -SC39-	7.5A		Steering column electronics control unit -J527-	30
40		Fuse 40 on fuse holder C -SC40-	5A		Multimedia system control unit -J650-	30
41		Fuse 41 on fuse holder C -SC41-	5A		Dash panel insert -K-	30
42		Fuse 42 on fuse holder C -SC42-	15A		Electronically controlled damping control unit -J250-	30
43		Fuse 43 on fuse holder C -SC43-	30A		Driver seat lumbar support adjustment switch -E176-	30
					Front passenger seat lumbar support adjustment switch -E177-	30
44		Fuse 44 on fuse holder C -SC44-	25A		Fresh air blower relay -J13-	30
					Heated rear window relay -J9-	30
45		Fuse 45 on fuse holder C -SC45-	30A		Front passenger door control unit -J387-	30
					Rear right sliding door control unit -J871-	30
46		Fuse 46 on fuse holder C -SC46-	30A		Driver door control unit -J386-	30
					Rear left sliding door control unit -J870-	30
47		Fuse 47 on fuse holder C -SC47-	-		Vacant	30
48		Fuse 48 on fuse holder C -SC48-	15A		Anti-theft alarm system horn -H8-	30
					Interior monitoring sensor -G273-	30
					Onboard supply control unit -J519- (T52c/1)	30
					# Terminal 30, Anti-theft alarm supply
49		Fuse 49 on fuse holder C -SC49-	30A		Control​ unit​ for​ electromechanical​ parking​ brake -J540-	30
50		Fuse 50 on fuse holder C -SC50-	30A		Onboard supply control unit -J519- , (T52b/1)	30
					# Terminal 30, Central locking supply
51		Fuse 51 on fuse holder C -SC51-	30A		Heated front seats control unit -J774-	30
52		Fuse 52 on fuse holder C -SC52-	20A		Headlight washer system relay -J39-3	30
53		Fuse 53 on fuse holder C -SC53-	30A		DC/AC converter with socket, 12V-230V -U13-	30
54		Fuse 54 on fuse holder C -SC54-	10A		Electronic steering column lock control unit -J764-	30
55		Fuse 55 on fuse holder C -SC55-	25A		Trailer voltage supply relay -J941-	30
56		Fuse 56 on fuse holder C -SC56-	30A		Trailer detector control unit -J345-	30
57		Fuse 57 on fuse holder C -SC57-	-		Vacant	30
58		Fuse 58 on fuse holder C -SC58-	25A		Special vehicle control unit -J608-	30
1 Only models with start/stop system
2 Only models with no start/stop system
3 See fuse assignment (SB), from May 2011

Back to overview → Anchor

Fuse assignment (SC), from May 2011

No.		Current Flow Diagram designation	Nominal value		Function/component	Terminal
1		Fuse 1 on fuse holder C -SC1-	-		Vacant	15
2		Fuse 2 on fuse holder C -SC2-	-		Vacant	15
3		Fuse 3 on fuse holder C -SC3-	-		Vacant	15
4		Fuse 4 on fuse holder C -SC4-	10A		DC/AC converter with socket, 12V-230V -U13-	15
					Voltage stabiliser -J532-	15
					Starter relay 1 -J906-1
					Starter relay 2 -J907-1	15
5		Fuse 5 on fuse holder C -SC5-	10A		Electronically controlled damping control unit -J250-	15
6		Fuse 6 on fuse holder C -SC6-	-		Vacant	15
7		Fuse 7 on fuse holder C -SC7-	-		Vacant	15
8		Fuse 8 on fuse holder C -SC8-	-		Vacant	15
9		Fuse 9 on fuse holder C -SC9-	7.5A		Front passenger side airbag deactivated warning lamp -K145-	15
					Airbag​ control​ unit​ -J234-	15
10		Fuse 10 on fuse holder C -SC10-	5A		Taxi meter -G41-	15
					Mirror taxi meter -G511-	15
					Control unit for taxi alarm remote control -J601-	15
11		Fuse 11 on fuse holder C -SC11-	10A		All-wheel drive control unit -J492-	15
12		Fuse 12 on fuse holder C -SC12-	10A		Left gas discharge light -L13-	15
13		Fuse 13 on fuse holder C -SC13-	5A		Electromechanical parking brake button -E538-	15
					Oil level and oil temperature sender -G266-	15
					Reversing light switch -F4-	15
					Operating unit in front of centre console -E461-	15
					High-pressure sender -G65-	15
					Parking aid control unit -J446-	15
					Interior mirror -EX5-	15
					Front camera for driver assist systems -R242-	15
14		Fuse 14 on fuse holder C -SC14-	7.5A		Light switch -E1-	15
					Trailer detector control unit -J345-	15
					Control​ unit​ for​ electromechanical​ parking​ brake -J540-	15
					ABS control unit -J104-	15
					Brake​ light​ switch -F-3	15
					Power steering control unit -J500-	15
					Engine control unit -J623-	15
					Data bus diagnostic interface -J533-	15
					Control unit in dash panel insert -J285-	15
15		Fuse 15 on fuse holder C -SC15-	10A		Auxiliary heater operation relay -J485-	15
					Diagnostic connection -U31-	15
					Left headlight -MX1- , not Xenon	15
					Right​ headlight -MX2- , not Xenon	15
					Control unit for bend lighting and headlight range control​ -J745-	15
					Switch and instrument illumination regulator -E20-	15
					Air mass meter -G70-	15
16		Fuse 16 on fuse holder C -SC16-	10A		Right gas discharge bulb -L14-	15
17		Fuse 17 on fuse holder C -SC17-	5A		Mobile telephone operating electronics control unit -J412-	30
18		Fuse 18 on fuse holder C -SC18-	7.5A		Control unit for taxi alarm remote control -J601-	30
					Data transmission control unit -J753-	30
19		Fuse 19 on fuse holder C -SC19-	-		Vacant
20		Fuse 20 on fuse holder C -SC20-	5A		ABS control unit -J104-	30
21		Fuse 21 on fuse holder C -SC21-	5A		2nd heat exchanger switch-off valve -N317-	30
22		Fuse 22 on fuse holder C -SC22-	7.5A		Rain and light sensor -G397-	30
					Diagnostic connection -U31-	30
					Reversing camera system control unit -J772-	30
					Light switch -E1-	30
23		Fuse 23 on fuse holder C -SC23-	7.5A		Selector lever sensors control unit -J587-	30
					Electromechanical parking brake button -E538-	30
					Climatronic control unit -J255-	30
					Air​ conditioning​ system​ control​ unit​ -J301-	30
					Operating​ and​ display​ unit​ for​ rear​ air​ conditioning​ system -E265-	30
					Rear blower regulation sensor -G463-	30
					Remote control receiver for auxiliary coolant heater -R149-	30
24		Fuse 24 on fuse holder C -SC24-	7.5A		Entry​ and​ start​ authorisation​ control​ unit​ -J518-	30
25		Fuse 25 on fuse holder C -SC25-	7.5A		Mechatronic unit for dual clutch gearbox -J743-	15
					Selector lever sensors control unit -J587-	15
26		Fuse 26 on fuse holder C -SC26-	5A		Air quality sensor -G238-	15
27		Fuse 27 on fuse holder C -SC27-	-		Vacant
28		Fuse 28 on fuse holder C -SC28-	15A		Rear window wiper motor -V12-	75
29		Fuse 29 on fuse holder C -SC29-	30A		12V socket -U5-	75
					12V socket 3 -U19-	75
					Blocking diode -J29-	75
30		Fuse 30 on fuse holder C -SC30-	30A		Cigarette lighter -U1-	75
					12V socket 2 -U18-	75
					Onboard supply control unit -J519- (T52c/21)	75
					# Terminal 75 diagnosis feedback
31		Fuse 31 on fuse holder C -SC31-	-		Vacant	75
32		Fuse 32 on fuse holder C -SC32-	-		Vacant	75
33		Fuse 33 on fuse holder C -SC33-	-		Vacant	75
34		Fuse 34 on fuse holder C -SC34-	-		Vacant	75
35		Fuse 35 on fuse holder C -SC35-	-		Vacant	75
36		Fuse 36 on fuse holder C -SC36-	30A		Control​ unit​ for​ electromechanical​ parking​ brake -J540-	30
37		Fuse 37 on fuse holder C -SC37-	25A		Sliding sunroof control unit -J245-	30
38		Fuse 38 on fuse holder C -SC38-	30A		Sunroof roller blind control unit -J394-	30
39		Fuse 39 on fuse holder C -SC39-	7.5A		Steering column electronics control unit -J527-	30
40		Fuse 40 on fuse holder C -SC40-	5A		Multimedia system control unit -J650-	30
41		Fuse 41 on fuse holder C -SC41-	5A		Dash panel insert -K-	30
42		Fuse 42 on fuse holder C -SC42-	15A		Electronically controlled damping control unit -J250-	30
43		Fuse 43 on fuse holder C -SC43-	30A		Driver seat lumbar support adjustment switch -E176-	30
					Front passenger seat lumbar support adjustment switch -E177-	30
44		Fuse 44 on fuse holder C -SC44-	25A		Fresh air blower relay -J13-	30
					Heated rear window relay -J9-	30
45		Fuse 45 on fuse holder C -SC45-	30A		Front passenger door control unit -J387-	30
					Rear right sliding door control unit -J871-	30
46		Fuse 46 on fuse holder C -SC46-	30A		Driver door control unit -J386-	30
					Rear left sliding door control unit -J870-	30
47		Fuse 47 on fuse holder C -SC47-	10A		Taxi meter -G41-	30
					Mirror taxi meter -G511-	30
					Front interior light button -E326-	30
					Taxi sign switch -E138-	30
					Taxi alarm active button -E485-	30
48		Fuse 48 on fuse holder C -SC48-	15A		Anti-theft alarm system horn -H8-	30
					Interior monitoring sensor -G273-	30
					Onboard supply control unit -J519- (T52c/1)	30
					# Terminal 30, Anti-theft alarm supply
49		Fuse 49 on fuse holder C -SC49-	30A		Control​ unit​ for​ electromechanical​ parking​ brake -J540-	30
50		Fuse 50 on fuse holder C -SC50-	30A		Onboard supply control unit -J519- , (T52b/1)	30
					# Terminal 30, Central locking supply
51		Fuse 51 on fuse holder C -SC51-	30A		Heated front seats control unit -J774-	30
52		Fuse 52 on fuse holder C -SC52-	30A		Rear air recirculation blower -V242-	30
53		Fuse 53 on fuse holder C -SC53-	30A		DC/AC converter with socket, 12V-230V -U13-	30
54		Fuse 54 on fuse holder C -SC54-	10A		Electronic steering column lock control unit -J764-	30
55		Fuse 55 on fuse holder C -SC55-	25A		Trailer voltage supply relay -J941-	30
56		Fuse 56 on fuse holder C -SC56-	30A		Trailer detector control unit -J345-	30
57		Fuse 57 on fuse holder C -SC57-	10A		Two-way radio unit -R8-	30
58		Fuse 58 on fuse holder C -SC58-	25A		Special vehicle control unit -J608-	30
1 Only models with start/stop system
2 Only models with no start/stop system
3 To November 2011

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Fuse assignment (SC), from May 2013

No.		Current Flow Diagram designation	Nominal value		Function/component	Terminal
1		Fuse 1 on fuse holder C -SC1-	-		Vacant	15
2		Fuse 2 on fuse holder C -SC2-	-		Vacant	15
3		Fuse 3 on fuse holder C -SC3-	-		Vacant	15
4		Fuse 4 on fuse holder C -SC4-	10A		DC/AC converter with socket, 12V-230V -U13-	15
					Voltage stabiliser -J532-	15
					Starter relay 1 -J906-1
					Starter relay 2 -J907-1	15
5		Fuse 5 on fuse holder C -SC5-	10A		Electronically controlled damping control unit -J250-	15
6		Fuse 6 on fuse holder C -SC6-	-		Vacant	15
7		Fuse 7 on fuse holder C -SC7-	-		Vacant	15
8		Fuse 8 on fuse holder C -SC8-	-		Vacant	15
9		Fuse 9 on fuse holder C -SC9-	7.5A		Front passenger side airbag deactivated warning lamp -K145-	15
					Airbag​ control​ unit​ -J234-	15
10		Fuse 10 on fuse holder C -SC10-	5A		Taxi meter -G41-	15
					Mirror taxi meter -G511-	15
					Control unit for taxi alarm remote control -J601-	15
11		Fuse 11 on fuse holder C -SC11-	10A		All-wheel drive control unit -J492-	15
12		Fuse 12 on fuse holder C -SC12-	10A		Left gas discharge light -L13-	15
13		Fuse 13 on fuse holder C -SC13-	5A		Electromechanical parking brake button -E538-	15
					Oil level and oil temperature sender -G266-	15
					Reversing light switch -F4-	15
					Operating unit in front of centre console -E461-	15
					High-pressure sender -G65-	15
					Parking aid control unit -J446-	15
					Interior mirror -EX5-	15
					Front camera for driver assist systems -R242-	15
14		Fuse 14 on fuse holder C -SC14-	7.5A		Light switch -E1-	15
					Trailer detector control unit -J345-	15
					Control​ unit​ for​ electromechanical​ parking​ brake -J540-	15
					ABS control unit -J104-	15
					Brake​ light​ switch -F-3	15
					Power steering control unit -J500-	15
					Engine control unit -J623-	15
					Data bus diagnostic interface -J533-	15
					Control unit in dash panel insert -J285-	15
15		Fuse 15 on fuse holder C -SC15-	10A		Auxiliary heater operation relay -J485-	15
					Diagnostic connection -U31-	15
					Left headlight -MX1- , not Xenon	15
					Right​ headlight -MX2- , not Xenon	15
					Control unit for bend lighting and headlight range control​ -J745-	15
					Switch and instrument illumination regulator -E20-	15
					Air mass meter -G70-	15
16		Fuse 16 on fuse holder C -SC16-	10A		Right gas discharge bulb -L14-	15
17		Fuse 17 on fuse holder C -SC17-	5A		Mobile telephone operating electronics control unit -J412-	30
18		Fuse 18 on fuse holder C -SC18-	7.5A		Control unit for taxi alarm remote control -J601-	30
					Data transmission control unit -J753-	30
19		Fuse 19 on fuse holder C -SC19-	-		Vacant
20		Fuse 20 on fuse holder C -SC20-	5A		ABS control unit -J104-	30
21		Fuse 21 on fuse holder C -SC21-	5A		2nd heat exchanger switch-off valve -N317-	30
22		Fuse 22 on fuse holder C -SC22-	7.5A		Rain and light sensor -G397-	30
					Diagnostic connection -U31-	30
					Reversing camera system control unit -J772-	30
					Light switch -E1-	30
23		Fuse 23 on fuse holder C -SC23-	7.5A		Selector lever sensors control unit -J587-	30
					Electromechanical parking brake button -E538-	30
					Climatronic control unit -J255-	30
					Air​ conditioning​ system​ control​ unit​ -J301-	30
					Operating​ and​ display​ unit​ for​ rear​ air​ conditioning​ system -E265-	30
					Rear blower regulation sensor -G463-	30
					Remote control receiver for auxiliary coolant heater -R149-	30
24		Fuse 24 on fuse holder C -SC24-	7.5A		Entry​ and​ start​ authorisation​ control​ unit​ -J518-	30
25		Fuse 25 on fuse holder C -SC25-	7.5A		Mechatronic unit for dual clutch gearbox -J743-	15
					Selector lever sensors control unit -J587-	15
26		Fuse 26 on fuse holder C -SC26-	5A		Air quality sensor -G238-	15
27		Fuse 27 on fuse holder C -SC27-	-		Vacant
28		Fuse 28 on fuse holder C -SC28-	15A		Rear window wiper motor -V12-	75
29		Fuse 29 on fuse holder C -SC29-	30A		12V socket -U5-	75
					12V socket 3 -U19-	75
					Blocking diode -J29-	75
30		Fuse 30 on fuse holder C -SC30-	30A		Cigarette lighter -U1-	75
					12V socket 2 -U18-	75
					Onboard supply control unit -J519- (T52c/21)	75
					# Terminal 75 diagnosis feedback
31		Fuse 31 on fuse holder C -SC31-	-		Vacant	75
32		Fuse 32 on fuse holder C -SC32-	-		Vacant	75
33		Fuse 33 on fuse holder C -SC33-	-		Vacant	75
34		Fuse 34 on fuse holder C -SC34-	-		Vacant	75
35		Fuse 35 on fuse holder C -SC35-	-		Vacant	75
36		Fuse 36 on fuse holder C -SC36-	30A		Control​ unit​ for​ electromechanical​ parking​ brake -J540-	30
37		Fuse 37 on fuse holder C -SC37-	25A		Sliding sunroof control unit -J245-	30
38		Fuse 38 on fuse holder C -SC38-	30A		Sunroof roller blind control unit -J394-	30
39		Fuse 39 on fuse holder C -SC39-	7.5A		Steering column electronics control unit -J527-	30
40		Fuse 40 on fuse holder C -SC40-	5A		Multimedia system control unit -J650-	30
41		Fuse 41 on fuse holder C -SC41-	5A		Dash panel insert -K-	30
42		Fuse 42 on fuse holder C -SC42-	15A		Electronically controlled damping control unit -J250-	30
43		Fuse 43 on fuse holder C -SC43-	30A		Driver seat lumbar support adjustment switch -E176-	30
					Front passenger seat lumbar support adjustment switch -E177-	30
44		Fuse 44 on fuse holder C -SC44-	25A		Fresh air blower relay -J13-	30
					Heated rear window relay -J9-	30
45		Fuse 45 on fuse holder C -SC45-	30A		Front passenger door control unit -J387-	30
					Rear right sliding door control unit -J871-	30
46		Fuse 46 on fuse holder C -SC46-	30A		Driver door control unit -J386-	30
					Rear left sliding door control unit -J870-	30
47		Fuse 47 on fuse holder C -SC47-	10A		Taxi meter -G41-	30
					Mirror taxi meter -G511-	30
					Front interior light button -E326-	30
					Taxi sign switch -E138-	30
					Taxi alarm active button -E485-	30
48		Fuse 48 on fuse holder C -SC48-	15A		Anti-theft alarm system horn -H8-	30
					Interior monitoring sensor -G273-	30
					Onboard supply control unit -J519- (T52c/1)	30
					# Terminal 30, Anti-theft alarm supply
49		Fuse 49 on fuse holder C -SC49-	30A		Control​ unit​ for​ electromechanical​ parking​ brake -J540-	30
50		Fuse 50 on fuse holder C -SC50-	30A		Onboard supply control unit -J519- , (T52b/1)	30
					# Terminal 30, Central locking supply
51		Fuse 51 on fuse holder C -SC51-	30A		Heated front seats control unit -J774-	30
52		Fuse 52 on fuse holder C -SC52-	30A		Rear air recirculation blower -V242-	30
53		Fuse 53 on fuse holder C -SC53-	30A		DC/AC converter with socket, 12V-230V -U13-	30
54		Fuse 54 on fuse holder C -SC54-	10A		Electronic steering column lock control unit -J764-	30
55		Fuse 55 on fuse holder C -SC55-	25A		All-wheel drive control unit -J492-	30
56		Fuse 56 on fuse holder C -SC56-	-		Vacant	30
57		Fuse 57 on fuse holder C -SC57-	10A		Two-way radio unit -R8-	30
58		Fuse 58 on fuse holder C -SC58-	25A		Special vehicle control unit -J608-	30
1 Only models with start/stop system
2 Only models with no start/stop system

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Fuse and relay carrier (SR1), above fuse holder SC

-	Fuse colours

50 A - red

40 A - orange

30 A - light-green

25 A - natural (white)

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Fuse assignment (SR1), from September 2010

No.		Current Flow Diagram designation	Nominal value		Function/component	Terminal
1		Thermal fuse 2 -S362-	40A		Right sliding door control unit -J731-	30
2		Driver seat adjustment thermal fuse 1 -S44-	30A		Driver seat adjustment operating unit -E470-	30
3		Front passenger seat adjustment thermal fuse 1 -S46-	30A		Front passenger seat adjustment operating unit -E471-	30

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Fuse holder D (SD), rear left Fuse colours 50 A - red 40 A - orange 30 A - light-green 25 A - natural (white) Back to overview → Anchor

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Fuse assignment (SD), from September 2010

No.		Current Flow Diagram designation	Nominal value		Function/component	Terminal
1		Fuse 1 on fuse holder D -SD1-	40A		Left sliding door control unit -J558-	30
2		Fuse 2 on fuse holder D -SD2-	30A		Rear lid control unit -J605-	30
3		Fuse 3 on fuse holder D -SD3-	30A		Trailer detector control unit -J345-	30
4		Fuse 4 on fuse holder D -SD4-	30A		Trailer detector control unit -J345-	30
5		Fuse 5 on fuse holder D -SD5-	-		Vacant
6		Fuse 6 on fuse holder D -SD6-	-		Vacant

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Fuse assignment (SD), from May 2013

No.		Current Flow Diagram designation	Nominal value		Function/component	Terminal
1		Fuse 1 on fuse holder D -SD1-	40A		Left sliding door control unit -J558-	30
2		Fuse 2 on fuse holder D -SD2-	30A		Rear lid control unit -J605-	30
3		Fuse 3 on fuse holder D -SD3-	30A		Trailer detector control unit -J345-	30
4		Fuse 4 on fuse holder D -SD4-	30A		Trailer detector control unit -J345-	30
5		Fuse 5 on fuse holder D -SD5-	25A		Trailer voltage supply relay -J941-	30
6		Fuse 6 on fuse holder D -SD6-	30A		Trailer detector control unit -J345-	30

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