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Wiring Diagram AUDI A3 CABRIOLET 2008 - Fuses on fuse holder
| A | Battery |
| SA5 | Fuse 5 on fuse holder A |
| SC12 | Fuse 12 on fuse holder C |
| SC23 | Fuse 23 on fuse holder C |
| SC28 | Fuse 28 on fuse holder C |
| SC38 | Fuse 38 on fuse holder C |
| SC43 | Fuse 43 on fuse holder C |
| B272 | Positive connection (30), in main wiring harness |
| * | ⇒ applicable Current Flow Diagram with battery in engine compartment |
Wiring Diagram AUDI A3 CABRIOLET 2008 - Fuses on fuse holder - terminal 15 voltage supply relay 2
| J519 | Onboard supply control unit |
| J681 | Terminal 15 voltage supply relay 2 |
| J689 | Terminal 30 voltage supply relay 2 |
| SB30 | Fuse 30 on fuse holder B |
| SC2 | Fuse 2 on fuse holder C |
| SC13 | Fuse 13 on fuse holder C |
| SC15 | Fuse 15 on fuse holder C |
| SC17 | Fuse 17 on fuse holder C |
| T2t | 2-pin connector, black (connector L) |
| T40 | 40-pin connector, black, on electronics box in engine compartment (connector J) |
| B273 | Positive connection (15), in main wiring harness |
| B277 | Positive connection 1 (15a), in main wiring harness |
| B316 | Positive connection 2 (30a), in main wiring harness |
| ** | for models with anti-theft alarm system only |
| *** | for models with interior light only |
Wiring Diagram AUDI A3 CABRIOLET 2008 - Front interior light with reading lights
| E326 | Front interior light button |
| E457 | Driver side reading light button |
| E458 | Front passenger side reading light button |
| J519 | Onboard supply control unit |
| L156 | Switch illumination bulb |
| T10d | 10-pin connector, black (connector K) |
| T12c | 12-pin connector, black (connector B) |
| W1 | Front interior light |
| W13 | Front passenger side reading light |
| W19 | Driver side reading light |
| 383 | Earth connection 18, in main wiring harness |
| B325 | Positive connection 11 (30a), in main wiring harness |
| B466 | Connection 2 in main wiring harness |
| B467 | Connection 3 in main wiring harness |
| B476 | Connection 12 in main wiring harness |
Wiring Diagram AUDI A3 CABRIOLET 2008 - Vanity mirror contact switch - interior monitoring sensor - alarm horn
| F147 | Driver vanity mirror contact switch |
| F148 | Front passenger side vanity mirror contact switch |
| G273 | Interior monitoring sensor |
| H12 | Alarm horn |
| J519 | Onboard supply control unit |
| W14 | Front passenger side illuminated vanity mirror |
| W20 | Driver side illuminated vanity mirror |
| 383 | Earth connection 18, in main wiring harness |
| 388 | Earth connection 23, in main wiring harness |
| 389 | Earth connection 24, in main wiring harness |
| B466 | Connection 2 in main wiring harness |
| B528 | Connection 1 (LIN bus), in main wiring harness |
| * | for models with illuminated vanity mirror without garage door operation only |
| ** | for models with anti-theft alarm system only |
Wiring Diagram AUDI A3 CABRIOLET 2008 - Storage compartment illumination - footwell lights - glove compartment light - central locking deadlock function warning lamp -SAFE-
| E26 | Glove compartment light switch |
| J519 | Onboard supply control unit |
| K133 | Central locking deadlock function warning lamp |
| L120 | Storage compartment illumination bulb |
| T8a | 8-connector, black, near glove compartment |
| T8d | 8-pin connector, black, behind centre console |
| T12c | 12-pin connector, black (connector B) |
| T20 | 20-pin connector, black, door A-pillar left |
| W6 | Glove compartment light |
| W9 | Left footwell light |
| W10 | Right footwell light |
| 389 | Earth connection 24, in main wiring harness |
| 392 | Earth connection 27, in main wiring harness |
| 393 | Earth connection 28, in main wiring harness |
| B466 | Connection 2 in main wiring harness |
Wiring Diagram AUDI A3 CABRIOLET 2008 - Storage compartment illumination - parking brake contact switch - bonnet contact switch
| F266 | Bonnet contact switch |
| F321 | Parking brake contact switch |
| J393 | Convenience system central control unit |
| J519 | Onboard supply control unit |
| L159 | Centre console storage compartment illumination |
| T8h | 8-pin connector, black (connector F) |
| T12e | 12-pin connector, black (connector G) |
| T18 | 18-pin connector, brown (connector A) |
| 381 | Earth connection 16, in main wiring harness |
| 389 | Earth connection 24, in main wiring harness |
| 390 | Earth connection 25, 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 |
Wiring Diagram AUDI A3 CABRIOLET 2008 - Rear lid handle release button - rear lid contact switch for anti-theft alarm - rear lid central locking motor
| E234 | Rear lid handle release button |
| F123 | Rear lid contact switch for anti-theft alarm system |
| F124 | Contact switch in lock cylinder for rear lid, anti-theft alarm system, central locking system |
| J393 | Convenience system central control unit |
| T6g | 6-pin connector, black (connector E) |
| T8g | 8-pin connector, black (connector B) |
| T18 | 18-pin connector, brown (connector A) |
| V53 | Rear lid central locking motor |
| 380 | Earth connection 15, 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 |
| # | F248 is replaced by E234 |
| * | for models with contact switch in lock cylinder for rear lid, anti-theft alarm system, central locking system only |
Wiring Diagram AUDI A3 CABRIOLET 2008 - Tank filler flap locking motor - luggage compartment lights
| J393 | Convenience system central control unit |
| T8a | 8-connector, black, near glove compartment |
| T8g | 8-pin connector, black (connector B) |
| T18 | 18-pin connector, brown (connector A) |
| V155 | Tank filler flap locking motor |
| W18 | Luggage compartment light on left |
| W35 | Right luggage compartment light |
| 384 | Earth connection 19, in main wiring harness |
| 391 | Earth connection 26, 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 |
| B477 | Connection 13 in main wiring harness |
Wiring Diagram AUDI A3 CABRIOLET 2008 - Aerials
| J393 | Convenience system central control unit |
| R111 | Aerial amplifier 2 |
| T3v | 3-pin connector |
| T18 | 18-pin connector, brown (connector A) |
| 391 | Earth connection 26, 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 |
| * | for models with radio or radio navigation system only |
| ** | not for models with radio or radio navigation system |
| *** | on front right windscreen |
Wiring Diagram AUDI A3 CABRIOLET 2008 - Driver side central locking lock unit
| F2 | Driver door contact switch |
| F131 | Front left central locking actuator |
| F220 | Driver side central locking lock unit |
| F241 | Driver side contact switch in lock cylinder |
| J386 | Driver door control unit |
| T20f | 20-pin connector, black (connector A) |
| V56 | Driver door central locking motor |
| V161 | Driver door central locking deadlock function motor |
| B397 | Connection 1 (convenience CAN bus, high), in main wiring harness |
| B406 | Connection 1 (convenience CAN bus, low), in main wiring harness |
Wiring Diagram AUDI A3 CABRIOLET 2008 - Mirror adjustment switch - alarm system off switch
| E43 | Mirror adjustment switch |
| E48 | Mirror adjustment change-over switch |
| E168 | Adjustment switch for mirror with fold-in feature |
| E183 | Interior monitoring deactivation switch |
| E217 | Alarm system off switch |
| J386 | Driver door control unit |
| L108 | Driver door opener illumination bulb |
| T32a | 32-pin connector, grey (connector C) |
| 205 | Earth connection, in driver door wiring harness |
| B397 | Connection 1 (convenience CAN bus, high), in main wiring harness |
| B406 | Connection 1 (convenience CAN bus, low), in main wiring harness |
| R52 | Connection (58s), in driver side door wiring harness |
| * | for models with interior monitor only |
| ** | for models with driver door opener illumination bulb only |
Wiring Diagram AUDI A3 CABRIOLET 2008 - Front left entry light - interior locking button - driver side - door warning lamp - driver side
| E308 | Driver side interior locking button |
| J386 | Driver door control unit |
| T20f | 20-pin connector, black (connector A) |
| T32a | 32-pin connector, grey (connector C) |
| W30 | Driver side door warning lamp |
| W31 | Front left entry light |
| B397 | Connection 1 (convenience CAN bus, high), in main wiring harness |
| B406 | Connection 1 (convenience CAN bus, low), in main wiring harness |
| * | for models without entry warning lamp and door warning lamp only |
| ** | for models with entry warning lamp and door warning lamp only |
| # | E150 is replaced by E308 |
Wiring Diagram AUDI A3 CABRIOLET 2008 - Driver side mirror adjustment motor/fold-in mirror motor - driver side exterior mirror turn signal bulb
| J386 | Driver door control unit |
| L131 | Driver side exterior mirror turn signal bulb |
| T16b | 16-pin connector, (connector B) |
| T20 | 20-pin connector, black, door A-pillar left |
| T20f | 20-pin connector, black (connector A) |
| V17 | Driver side mirror adjustment motor |
| V121 | Driver side fold-in mirror motor |
| V149 | Driver side mirror adjustment motor |
| Y20 | Driver side automatic anti-dazzle exterior mirror |
| Z4 | Driver side heated exterior mirror |
| B397 | Connection 1 (convenience CAN bus, high), in main wiring harness |
| B406 | Connection 1 (convenience CAN bus, low), in main wiring harness |
| * | for models with automatic anti-dazzle interior mirror only |
| ** | for models with automatic anti-dazzle exterior mirror only |
Wiring Diagram AUDI A3 CABRIOLET 2008 - Window regulator switch - driver side
| E40 | Front left window regulator switch |
| E53 | Rear left window regulator switch, in driver door |
| E55 | Rear right window regulator switch, in driver door |
| E81 | Front right window regulator switch in driver door |
| E189 | Central switch for window regulators in driver door |
| J386 | Driver door control unit |
| T20 | 20-pin connector, black, door A-pillar left |
| T20f | 20-pin connector, black (connector A) |
| T32a | 32-pin connector, grey (connector C) |
| V147 | Driver side window regulator motor |
| 382 | Earth connection 17, 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 |
| * | for models with interior monitor only |
| ** | for models without interior monitor only |
Wiring Diagram AUDI A3 CABRIOLET 2008 - Rear window regulator motor
| T18c | 18-pin connector, white (connector A) |
| T18d | 18-pin connector, white (connector A) |
| V26 | Rear left window regulator motor |
| V27 | Rear right window regulator motor |
| 382 | Earth connection 17, in main wiring harness |
| 386 | Earth connection 21, 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 |
Wiring Diagram AUDI A3 CABRIOLET 2008 - Front passenger side central locking lock unit
| F3 | Front passenger door contact switch |
| F133 | Front right central locking actuator |
| F221 | Front passenger side central locking lock unit |
| J387 | Front passenger door control unit |
| T20a | 20-pin connector, black, door A-pillar right |
| T20g | 20-pin connector, black (connector A) |
| V57 | Front passenger door central locking motor |
| V148 | Front passenger side window regulator motor |
| V162 | Front passenger door central locking deadlock function motor |
| 386 | Earth connection 21, 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 |
Wiring Diagram AUDI A3 CABRIOLET 2008 - Front passenger side mirror adjustment motor/fold-in mirror motor - front passenger side exterior mirror turn signal bulb
| J387 | Front passenger door control unit |
| L132 | Front passenger side exterior mirror turn signal bulb |
| T16c | 16-pin connector, (connector B) |
| T20a | 20-pin connector, black, door A-pillar right |
| T20g | 20-pin connector, black (connector A) |
| V25 | Front passenger side mirror adjustment motor |
| V122 | Front passenger side fold-in mirror motor |
| V150 | Front passenger side mirror adjustment motor |
| Y7 | Automatic anti-dazzle interior mirror |
| Y21 | Front passenger side automatic anti-dazzle exterior mirror |
| Z5 | Front passenger side heated exterior mirror |
| B397 | Connection 1 (convenience CAN bus, high), in main wiring harness |
| B406 | Connection 1 (convenience CAN bus, low), in main wiring harness |
| B427 | Connection 1 (mirror signal), in main wiring harness |
| B428 | Connection 2 (mirror signal), in main wiring harness |
| * | for models with automatic anti-dazzle interior mirror only |
| ** | for models with automatic anti-dazzle exterior mirror only |
Wiring Diagram AUDI A3 CABRIOLET 2008 - Front right entry light - front passenger side door warning lamp - window regulator switch in front passenger door
| E107 | Window regulator switch in front passenger door |
| J387 | Front passenger door control unit |
| L109 | Front passenger door opener illumination bulb |
| T32b | 32-pin connector, grey (connector C) |
| W32 | Front right entry light |
| W36 | Front passenger side door warning lamp |
| 206 | Earth connection, in door wiring harness, front passenger side |
| B397 | Connection 1 (convenience CAN bus, high), in main wiring harness |
| B406 | Connection 1 (convenience CAN bus, low), in main wiring harness |
| * | for models with front passenger side door opener illumination only |
| ** | for models without front passenger side door opener illumination only |
Wiring Diagram AUDI A3 CABRIOLET 2008 - Control unit in dash panel insert - data bus diagnostic interface
| J285 | Control unit in dash panel insert |
| J533 | Data bus diagnostic interface |
| K102 | Rear lid closed warning lamp |
| K166 | Door open warning lamp |
| K201 | Fuel tank flap lock warning lamp |
| SB12 | Fuse 12 on fuse holder B |
| T20d | 20-pin connector, black (connector A) |
| T32 | 32-pin connector, blue (connector A) |
| T40 | 40-pin connector, black, on electronics box in engine compartment (connector J) |
| B397 | Connection 1 (convenience CAN bus, high), in main wiring harness |
| B406 | Connection 1 (convenience CAN bus, low), in main wiring harness |
AUDI A3 CABRIOLET 2008 Overview of fuses
| q | Location on main fuse holder, electronics box low, from November 2008 |
| q | Position of fuses on main fuse holder, electronics box low, from March 2008 |
| q | Position of fuses on main fuse holder, electronics box low, from November 2008 |
| q | Fuse assignment for E-box low |
| q | Position of fuses |
| Main fuse holder: Location fuse holder A -SA- on electronics box low, from March 2008 |
| Main Supply Connection: |
| M - | Screw connection M (terminal 30) |
| Position of fuses electronics box low, from March 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 thermal switch -F18- Radiator fan control unit -J293- Radiator fan -V7- | 30 | ||
| Fuse 4 on fuse holder A -SA4- | 40 A | - | Low heat output relay -J359- | 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- | 80 A | - | High heat output relay -J360- | 30 | ||
| Fuse 7 on fuse holder A -SA7- | - | - | Not assigned | - | ||
| Main fuse holder: Location fuse holder A -SA- on electronics box low, from November 2008 |
| Main Supply Connection: |
| M - | Screw connection M (terminal 30) |
| 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 thermal switch -F18- Radiator fan control unit -J293- 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- | - | - | Not assigned | - | ||
| Location fuse holder B -SB- on electronics box low, in left of 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 |
| Position of fuses electronics box low |
| 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 May 2009 | 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 May 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) | 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 May 2009 | 30 |
| F4 | - | Fuse 4 on fuse holder B -SB4- | 20 A | - | ABS control unit -J104- (MK60 valves) | 30 |
| F4 | - | Fuse 4 on fuse holder B -SB4- | 30 A | - | ABS control unit -J104- (MK70 valves) is dropped from May 2008 | 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 May 2009 | 30 |
| F6 | - | Fuse 6 on fuse holder B -SB6- | 5 A | - | Steering column electronics control unit -J527- | 30 |
| F7 | - | Not assigned | - | - | 30 | |
| F8 | - | Fuse 8 on fuse holder B -SB8- | 15 A | - | Navigation operating electronics control unit -J402- (RNS-E) Control unit with display for radio and navigation system -J503- (RNS low) Radio -R- is dropped from May 2009 | 30 |
| F8 | - | Fuse 8 on fuse holder B -SB8- | 25 A | - | Control unit with display for radio and navigation -J503- (for Japan only) is dropped from May 2009 | 30 |
| F9 | - | Fuse 9 on fuse holder B -SB9- | 5 A | - | Navigation system with CD drive control unit -J401- Telephone transmitter and receiver unit -R36- Aerial amplifier for mobile telephone -R86- 18-pin connector -T18a- (VDA interface) is dropped from May 2009 | 30 |
| F10 | - | Fuse 10 on fuse holder B -SB10- | 5 A | - | Motronic current supply relay -J271- (CBZB, CAXC) | 30 |
| F10 | - | Fuse 10 on fuse holder B -SB10- | 5 A | - | Engine control units -J...- (CBAB, CBAA, CAYC, CFFA, CFFB, CBZB, CAXC) Terminal 30 voltage supply relay -J317- (BLS, CBAB, CBAA, CAYC, CFFA, CFFB) | 30 |
| F10 | - | Fuse 10 on fuse holder B -SB10- | 10 A | - | Engine control units -J...- (BZB, CAWB, CDAA, CCZA) Motronic current supply relay -J271- (BZB, CAWB, CDAA, CCZA) | 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 units -J...- (BLS, CBAB, CBAA, CAYC, CFFA, CFFB) | 87 |
| 15 A | Engine control units -J...- (BZB, CAWB, BSE, CDAA, CCZA, CBZB, CAXC) | |||||
| 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 BZB, CAWB, CDAA, CCZA, CAXC only | 87 |
| F14 | - | Fuse 14 on fuse holder B -SB14- | 20 A | - | Ignition coil 1 with output stage -N- Output stage -N122- Ignition coil 2 -N128- for models with engine codes BSE, CBZB only | 87 |
| F14 | - | Fuse 14 on fuse holder B -SB14- | 20 A | - | Fuel pressure regulating valve -N276- Fuel metering valve -N290- for models with engine codes CBAB, CBAA, CAYC, CFFA, CFFB only is dropped from May 2011 | 87 |
| F14 | - | Fuse 14 on fuse holder B -SB14- | 15 A | - | Fuel pressure regulating valve -N276- Fuel metering valve -N290- for models with engine codes CBAB, CBAA, CAYC, CFFA, CFFB only applicable from May 2011 | 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 BLS, CBAB, CBAA, CAYC, CFFA, CFFB only | 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 BLS, CBAB, CBAA, CAYC, CFFA, CFFB only for models with auxiliary air heating only | 87 |
| F15 | - | Fuse 15 on fuse holder B -SB15- | 5 A | - | Supplementary fuel pump relay -J832- for models with engine codes CBAB, CBAA, CFFA, CFFB only | 87 |
| F15 | - | Fuse 15 on fuse holder B -SB15- | 10 A | - | Lambda probe heater -Z19- (CBZB, CAXC) Lambda probe 1 heater after catalytic converter -Z29- (CBZB, CAXC) | 87 |
| 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 | 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- | 30 |
| F18 | - | Fuse 18 on fuse holder B -SB18- | 30 A | - | Voltage stabiliser -J532- Amplifier -R12- only models with stop/start system applicable from May 2009 | 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- | 10 A | - | Coolant circulation pump -V50- (CBZB, CAXC) | 87 |
| F20 | - | Fuse 20 on fuse holder B -SB20- | 20 A | - | Fuel pressure regulating valve -N276- (BZB, CAWB, CDAA, CCZA) is dropped from May 2011 | 87 |
| F20 | - | Fuse 20 on fuse holder B -SB20- | 15 A | - | Fuel pressure regulating valve -N276- (BZB, CAWB, CDAA, CCZA) applicable from May 2011 | 87 |
| F21 | - | Fuse 21 on fuse holder B -SB21- | 10 A | - | Lambda probe heater -Z19- (BLS, BZB, CAWB, CBAB, CBAA, CAYC, CFFA, CFFB) | 87 |
| F21 | - | Fuse 21 on fuse holder B -SB21- | 20 A | - | Vacuum pump relay -J57- (CAXC) Vacuum pump for brakes -V192- (CAXC) | 87 |
| F21 | - | Fuse 21 on fuse holder B -SB21- | 10 A | - | Lambda probe heater -Z19- (BSE, CDAA, CCZA) Lambda probe 1 heater after catalytic converter -Z29- (BSE, CDAA, CCZA) is dropped from May 2009 | 87 |
| F21 | - | Fuse 21 on fuse holder B -SB21- | 15 A | - | Lambda probe heater -Z19- (BSE, CDAA, CCZA) Lambda probe 1 heater after catalytic converter -Z29- (BSE, CDAA, CCZA) applicable from May 2009 | 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 May 2009 | 87 |
| F23 | - | Fuse 23 on fuse holder B -SB23- | 5 A | - | Continued coolant circulation relay -J151- (BZB, CAWB, CDAA, CCZA) Secondary air pump relay -J299- (BSE) Continued coolant circulation pump -V51- (BZB, CAWB, CDAA, CCZA) | 87 |
| 10 A | Charge pressure control solenoid valve -N75- (BLS, CBAB, CBAA, CAYC, CFFA, CFFB) Exhaust gas recirculation cooler change-over valve -N345- (BLS, CBAB, CBAA, CAYC, CFFA, CFFB) Air mass meter -G70- (CFFA, CFFB) | |||||
| F23 | Fuse 23 on fuse holder B -SB23- | 15 A | Fuel pressure regulating valve -N276- (CBZB, CAXC) | |||
| F24 | - | Fuse 24 on fuse holder B -SB24- | 10 A | - | Radiator fan control unit -J293- Additional coolant pump relay -J496- (CAXC) Engine component current supply relay -J757- (BZB, CAWB, CDAA, CCZA) Charge pressure control solenoid valve -N75- (CAWB, BZB, CDAA, CCZA, CAXC) Activated charcoal filter system solenoid valve 1 -N80- (CAWB, BZB, BSE, CDAA, CCZA, CBZB, CAXC) Variable intake manifold change-over valve -N156- (BSE) Inlet camshaft control valve 1 -N205- (CAWB, BZB, CDAA, CCZA, CAXC) Turbocharger air recirculation valve -N249- (CAWB, BZB, CDAA, CCZA, CAXC) Intake manifold flap valve -N316- (CAWB, BZB, CDAA, CCZA, CBZB) Oil pressure control valve -N428- (CDAA, CCZA) Pump for exhaust gas recirculation cooler -V400- (CBAB, CBAA, CAYC, CFFA, CFFB) | 87 |
| F25 | - | Fuse 25 on fuse holder B -SB25- | 30 A | - | ABS control unit -J104- (MK70 ABS Pumpe) is dropped from May 2008 | 30 |
| F25 | - | Fuse 25 on fuse holder B -SB25- | 40 A | - | ABS control unit -J104- (MK70 ABS pump and ABS valves) applicable from May 2008 | 30 |
| F25 | Fuse 25 on fuse holder B -SB25- | 40 A | ABS control unit -J104- (MK60 ESP pump) | 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 BLS, CBAB, CBAA, CAYC, CFFA, CFFB only | 87 |
| F27 | - | Fuse 27 on fuse holder B -SB27- | 40 A | - | Secondary air pump motor -V101- (BSE) | 87 |
| F28 | - | Fuse 28 on fuse holder B -SB28- | 40 A | - | Convertible roof actuation control unit -J256- (hydraulic pump) | 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- | 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-, -SC29- up to -SC31-, -SC40- up to -SC42-, -SC46-, -SC47-, -SC49- | 30 |
| Location 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 |
| Position of fuses, fuse holder |
| 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- Air mass meter -G70- (BLS, BZB, CAWB, CDAA, CCZA, CAYC) Trailer detector control unit -J345- Headlight range control unit -J431- Heater element for crankcase breather -N79- (BLS, CBAB, CBAA, BSE, CAYC, CFFA, CFFB) 16-pin connector -T16- (diagnostic connector) Left headlight range control motor -V48- Right headlight range control motor -V49- | 15 |
| 1 | - | Fuse 1 on fuse holder C -SC1- | 10 A | - | Air mass meter -G70- (CBAB, CBAA) | 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...- Tiptronic switch -F189- Fuel pump relay -J17- (BSE) ABS control unit -J104- Current supply relay for Simos control unit -J363- (BSE) Power steering control unit -J500- Data bus diagnostic interface -J533- Fuel pump control unit -J538- (BZB, CAWB, CDAA, CCZA, CBZB, CAXC) 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 May 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- applicable from May 2009 | 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- Heated rear right seat switch with regulator -E129- Tyre pressure monitor button -E226- 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- Navigation system with CD drive control unit -J401- Parking aid control unit -J446- Garage door operation control unit -J530- Driver seat heating control unit -J726- Front passenger seat heating control unit -J727- 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- only models without stop/start system applicable from May 2009 | 15 |
| 4 | - | Fuse 4 on fuse holder C -SC4- | 5 A | - | Voltage stabiliser -J532- only models with stop/start system applicable from May 2009 | 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 May 2009 | 30 |
| 9 | - | Fuse 9 on fuse holder C -SC9- | 15 A | - | Navigation operating electronics control unit -J402- (RNS-E) Control unit with display for radio and navigation system -J503- (RNS low) Radio -R- 8-pin connector -T8- (preparation for radio supply) applicable from May 2009 | 30 |
| 10 | - | Fuse 10 on fuse holder C -SC10- | 7.5 A | - | Telephone transmitter and receiver unit -R36- Connection for external audio sources -R199- 18-pin connector -T18a- (VDA interface) applicable from May 2009 | 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 May 2009 | 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 | - | Convenience system central control unit -J393- is dropped from May 2009 | 30 |
| 14 | - | Fuse 14 on fuse holder C -SC14- | 10 A | - | ABS control unit -J104- (MK60 with hydraulic brake servo) Selector lever sensors control unit -J587- | 30 |
| 15 | - | Fuse 15 on fuse holder C -SC15- | 10 A | - | Front interior light -W1- | 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- Remote control receiver for auxiliary heater -R64- 16-pin connector -T16- (diagnostic connector) | 30 |
| 16 | - | Fuse 16 on fuse holder C -SC16- | 10 A | - | Lighting switch -E1- applicable from May 2009 | 30 |
| 17 | - | Fuse 17 on fuse holder C -SC17- | 5 A | - | Interior monitoring sensor -G273- Alarm horn -H12- | 30 |
| 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 May 2009 | 50 |
| 19 | - | Not assigned | - | - | - | |
| 20 | - | Not assigned | - | - | - | |
| 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- (in luggage compartment) | 30 |
| 27 | - | Fuse 27 on fuse holder C -SC27- | 15 A | - | Fuel system pressurisation pump -G6- Fuel pump relay -J17- (BLS, CBAB, CBAA, BSE, CAYC, CFFA, CFFB) Electric fuel pump 2 relay -J49- (BSE) Fuel pump control unit -J538- (BZB, CAWB, CDAA, CCZA, CBZB, CAXC) | 30 |
| 27 | - | Fuse 27 on fuse holder C -SC27- | 15 A | - | Electric fuel pump 2 relay -J49- (BLS, CBAB, CBAA, CAYC, CFFA, CFFB) for models with auxiliary heating only | 30 |
| 27 | - | Fuse 27 on fuse holder C -SC27- | 15 A | - | Relay for supplementary fuel pump -J832- (CBAB, CBAA, CFFA, CFFB) Supplementary fuel pump -V393- (CBAB, CBAA, CFFA, CFFB) | 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 | - | Not assigned | - | - | - | |
| 31 | - | Fuse 31 on fuse holder C -SC31- | 20 | - | Vacuum pump relay -J57- (BSE) Vacuum pump for brakes -V192- (BSE) | 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- | 25 A | - | Convertible roof actuation control unit -J256- | 30 |
| 34 | - | Fuse 34 on fuse holder C -SC34- | 20 A | - | Heated rear left seat control unit -J215- Heated rear right seat control unit -J216- | 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- (front seat heating) Driver seat heating control unit -J726- Front passenger seat heating control unit -J727- | 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 |
| 40 | - | Fuse 40 on fuse holder C -SC40- | 40 A | - | Starter -B- | 15 |
| 41 | - | Not assigned | - | - | - | |
| 42 | - | Fuse 41 on fuse holder C -SC42- | 15 A | - | Washer pump -V5- is dropped from May 2009 | 15 |
| 43 | - | Fuse 43 on fuse holder C -SC43- | 20 A | - | Convenience system central control unit -J393- is dropped from May 2009 | 30 |
| 43 | - | Fuse 43 on fuse holder C -SC43- | 20 A | - | Onboard supply control unit -J519- applicable from May 2009 | 30 |
| 44 | - | Fuse 44 on fuse holder C -SC44- | 20 A | - | Trailer detector control unit -J345- | 30 |
| 45 | - | Fuse 45 on fuse holder C -SC45- | 20 A | - | Trailer detector control unit -J345- | 30 |
| 46 | - | Fuse 46 on fuse holder C -SC46- | 10 A | - | Trailer socket -U10- | 15 |
| 47 | - | Fuse 47 on fuse holder C -SC47- | 5 A | - | 18-pin connector -T18a- (VDA interface) | 15 |
| 47 | - | Fuse 47 on fuse holder C -SC47- | 5 A | - | Aerial amplifier for mobile telephone -R86- applicable from May 2009 | 15 |
| 48 | - | Not assigned | - | - | - | |
| 49 | Not assigned | - | - | - |
