| J151 | Continued coolant circulation relay |
| J293 | Radiator fan control unit |
| J496 | Additional coolant pump relay |
| J623 | Engine control unit |
| J757 | Engine component current supply relay |
| SB | Fuse holder B |
| SB2 | Fuse 2 on fuse holder B |
| SB3 | Fuse 3 on fuse holder B |
| SB4 | Fuse 4 on fuse holder B |
| SB5 | Fuse 5 on fuse holder B |
| SB6 | Fuse 6 on fuse holder B |
| SB7 | Fuse 7 on fuse holder B |
| T4ao | 4-pin connector |
| T4bz | 4-pin connector |
| T4x | 4-pin connector |
| T5aa | 5-pin connector |
| T5ab | 5-pin connector |
| T6w | 6-pin connector |
| T94 | 94-pin connector |
| Z19 | Lambda probe heater |
| Z29 | Lambda probe 1 heater after catalytic converter |
| D182 | Connection 3 (87a) in engine compartment wiring harness |
| D207 | Connection 7 (87a) in engine compartment wiring harness |
| E30 | Connection (87a), in engine wiring harness |
| * | According to equipment |
| *2 | Only models with 1.8l Total Flex engine |
| *3 | Only models with 2.0l engine |
| *4 | Only models with 1.4l engine |
| *5 | Cross section depends on equipment |
| *6 | Wiring colour depends on equipment |
| *7 | Only models with Euro 4 emission standard |
| *8 | From February 2013 |
| N70 | Ignition coil 1 with output stage |
| N75 | Charge pressure control solenoid valve |
| N80 | Activated charcoal filter solenoid valve 1 |
| N127 | Ignition coil 2 with output stage |
| N205 | Camshaft control valve 1 |
| N249 | Turbocharger air recirculation valve |
| N291 | Ignition coil 3 with output stage |
| N292 | Ignition coil 4 with output stage |
| SB | Fuse holder B |
| SB7 | Fuse 7 on fuse holder B |
| SB8 | Fuse 8 on fuse holder B |
| T2dt | 2-pin connector |
| T2du | 2-pin connector |
| T2eb | 2-pin connector |
| T2ed | 2-pin connector |
| T4af | 4-pin connector |
| T4ag | 4-pin connector |
| T4ah | 4-pin connector |
| T4ai | 4-pin connector |
| T14 | 14-pin connector |
| D189 | Connection (87a) in engine prewiring harness |
| D206 | Connection 4 (87a) in engine prewiring harness |
| * | Only models with 1.4l engine |
| *2 | Only models with Euro 4 emission standard |
| *3 | Only models with Euro 5 emission standard |
| *4 | Wiring colour depends on equipment |
| *5 | Only models with 1.8l Total Flex engine |
| *6 | Only models with 2.0l Total Flex engine |
| J757 | Engine component current supply relay |
| N75 | Charge pressure control solenoid valve |
| N80 | Activated charcoal filter solenoid valve 1 |
| N205 | Camshaft control valve 1 |
| N249 | Turbocharger air recirculation valve |
| N276 | Fuel pressure regulating valve |
| N316 | Intake manifold flap valve |
| N428 | Valve for oil pressure control |
| SB | Fuse holder B |
| SB8 | Fuse 8 on fuse holder B |
| SB9 | Fuse 9 on fuse holder B |
| T2bt | 2-pin connector |
| T2ds | 2-pin connector |
| T2dt | 2-pin connector |
| T2du | 2-pin connector |
| T2dv | 2-pin connector |
| T2eb | 2-pin connector |
| T2ed | 2-pin connector |
| T5ab | 5-pin connector |
| T14 | 14-pin connector |
| D189 | Connection (87a) in engine prewiring harness |
| * | Only models with 1.8l Total Flex engine |
| *2 | Only models with 2.0l engine |
| *3 | Only models with 1.4l engine |
| *4 | Only models with Euro 4 emission standard |
| *5 | Only models with Euro 5 emission standard |
| *6 | Wiring colour depends on equipment |
| F | Brake light switch |
| G476 | Clutch position sender |
| J151 | Continued coolant circulation relay |
| J496 | Additional coolant pump relay |
| J623 | Engine control unit |
| J757 | Engine component current supply relay |
| SB | Fuse holder B |
| SB10 | Fuse 10 on fuse holder B |
| SB11 | Fuse 11 on fuse holder B |
| SB13 | Fuse 13 on fuse holder B |
| SB14 | Fuse 14 on fuse holder B |
| T4al | 4-pin connector |
| T5aa | 5-pin connector |
| T5ab | 5-pin connector |
| T5m | 5-pin connector |
| T94 | 94-pin connector |
| D78 | Positive connection 1 (30a), in engine compartment wiring harness |
| D183 | Connection 4 (87a) in engine compartment wiring harness |
| D188 | Positive connection 3 (30a), in engine compartment wiring harness |
| D196 | Connection 2 (87a) in engine prewiring harness |
| D209 | Positive connection 5 (30a), in engine compartment wiring harness |
| * | Only models with 1.8l Total Flex engine |
| *2 | Up to February 2013 |
| *3 | Only models with 1.4l engine |
| *4 | Only models with 2.0l engine |
| *5 | From February 2013 |
| *6 | Only models with manual gearbox |
| *7 | Up to August 2012 |
| *8 | From August 2012 |
| *9 | Wiring colour depends on equipment |
| *10 | Cross section depends on equipment |
| J104 | ABS control unit |
| J367 | Battery monitor control unit |
| J519 | Onboard supply control unit |
| J532 | Voltage stabiliser |
| J743 | Mechatronic unit for dual clutch gearbox |
| SB | Fuse holder B |
| SB15 | Fuse 15 on fuse holder B |
| SB16 | Fuse 16 on fuse holder B |
| SB17 | Fuse 17 on fuse holder B |
| SB18 | Fuse 18 on fuse holder B |
| SB19 | Fuse 19 on fuse holder B |
| T2ck | 2-pin connector |
| T12aa | 12-pin connector |
| T20ap | 20-pin connector |
| T25 | 25-pin connector |
| T47 | 47-pin connector |
| T52a | 52-pin connector |
| B684 | Positive connection 24 (30a) in main wiring harness |
| D204 | Positive connection 4 (30a), in engine compartment wiring harness |
| * | Only models with dual clutch gearbox 0AM |
| *2 | Cross section depends on equipment |
| *3 | Only models with dual clutch gearbox 02E |
| J104 | ABS control unit |
| J519 | Onboard supply control unit |
| J681 | Terminal 15 voltage supply relay 2 |
| J682 | Terminal 50 voltage supply relay |
| SB | Fuse holder B |
| SB1 | Fuse 1 on fuse holder B |
| SB21 | Fuse 21 on fuse holder B |
| SB22 | Fuse 22 on fuse holder B |
| SB23 | Fuse 23 on fuse holder B |
| SB24 | Fuse 24 on fuse holder B |
| SB25 | Fuse 25 on fuse holder B |
| T9c | 9-pin connector |
| T9f | 9-pin connector |
| T47 | 47-pin connector |
| T52b | 52-pin connector |
| 367 | Earth connection 2, in main wiring harness |
| 368 | Earth connection 3, in main wiring harness |
| 602 | Earth point, in front left footwell |
| 605 | Earth point, on top end of steering column |
| B163 | Positive connection 1 (15), in interior wiring harness |
| * | Up to June 2013 |
| *2 | From July 2013 |
| *3 | Wiring colour depends on equipment |
| J285 | Control unit in dash panel insert |
| J412 | Mobile telephone operating electronics control unit |
| J532 | Voltage stabiliser |
| J764 | Control unit for electronic steering column lock |
| SC | Fuse holder C |
| SC1 | Fuse 1 on fuse holder C |
| SC2 | Fuse 2 on fuse holder C |
| SC3 | Fuse 3 on fuse holder C |
| SC4 | Fuse 4 on fuse holder C |
| T12aa | 12-pin connector |
| T16v | 16-pin connector |
| T32 | 32-pin connector |
| T54 | 54-pin connector |
| B171 | Positive connection 3 (30), in interior wiring harness |
| B172 | Positive connection 4 (30), in interior wiring harness |
| B298 | Positive connection 2 (30), in main wiring harness |
| B320 | Positive connection 6 (30a) in main wiring harness |
| * | Up to June 2013 |
| *2 | Cross section depends on equipment |
| *3 | Only models with start/stop system |
| *4 | Wiring colour depends on equipment |
| *5 | From July 2013 |
| E256 | TCS and ESP button |
| E492 | Tyre Pressure Loss Indicator button |
| E693 | Start/Stop operation button |
| F4 | Reversing light switch |
| G65 | High-pressure sender |
| J446 | Parking aid control unit |
| J745 | Control unit for cornering light and headlight range control |
| K259 | Start/Stop operation warning lamp |
| SC | Fuse holder C |
| SC13 | Fuse 13 on fuse holder C |
| T2fi | 2-pin connector |
| T3c | 3-pin connector |
| T6ak | 6-pin connector |
| T6am | 6-pin connector |
| T6au | 6-pin connector |
| T6d | 6-pin connector |
| T16 | 16-pin connector |
| T26 | 26-pin connector |
| Y7 | Automatic anti-dazzle interior mirror |
| A217 | Positive connection 8 (15a) in dash panel wiring harness |
| * | Only models with automatic anti-dazzle interior mirror |
| *2 | Only models with start/stop system |
| *3 | Only models with electronic stabilisation program (ESP) |
| E1 | Light switch |
| E7 | Fog light switch |
| E18 | Rear fog light switch |
| G266 | Oil level and oil temperature sender |
| J104 | ABS control unit |
| J285 | Control unit in dash panel insert |
| J500 | Power steering control unit |
| J532 | Voltage stabiliser |
| J533 | Data bus diagnostic interface |
| J538 | Fuel pump control unit |
| J587 | Selector lever sensors control unit |
| SC | Fuse holder C |
| SC14 | Fuse 14 on fuse holder C |
| T3 | 3-pin connector |
| T6z | 6-pin connector |
| T10h | 10-pin connector |
| T10n | 10-pin connector |
| T10s | 10-pin connector |
| T12aa | 12-pin connector |
| T20 | 20-pin connector |
| T32 | 32-pin connector |
| T47 | 47-pin connector |
| A199 | Positive connection 4 (15a) in dash panel wiring harness |
| * | Only models with 2.0l engine |
| *2 | Only models with 1.8l Total Flex engine |
| *3 | Only models with dual clutch gearbox |
| *4 | From August 2012 |
| E20 | Switch and instrument illumination regulator |
| G70 | Air mass meter |
| J538 | Fuel pump control unit |
| J623 | Engine control unit |
| J869 | Control unit for structure-borne sound |
| SC | Fuse holder C |
| SC15 | Fuse 15 on fuse holder C |
| SC16 | Fuse 16 on fuse holder C |
| T5d | 5-pin connector |
| T8e | 8-pin connector |
| T10h | 10-pin connector |
| T10l | 10-pin connector |
| T10r | 10-pin connector |
| T12u | 12-pin connector |
| T16 | 16-pin connector |
| T94 | 94-pin connector |
| U31 | Diagnostic connection |
| V48 | Left headlight range control motor |
| V49 | Right headlight range control motor |
| A201 | Positive connection 6 (15a) in dash panel wiring harness |
| B149 | Positive connection 2 (15a), in interior wiring harness |
| * | Cross section depends on equipment |
| *2 | Only models with 1.8l Total Flex engine |
| *3 | Only models with 2.0l engine |
| *4 | Only models with 1.4l engine |
| *5 | Only models with Euro 5 emission standard |
| J9 | Heated rear window relay |
| J386 | Driver door control unit |
| J387 | Front passenger door control unit |
| J518 | Entry and start authorisation control unit |
| SC | Fuse holder C |
| SC24 | Fuse 24 on fuse holder C |
| SC43 | Fuse 43 on fuse holder C |
| SC44 | Fuse 44 on fuse holder C |
| SC45 | Fuse 45 on fuse holder C |
| T5c | 5-pin connector |
| T20a | 20-pin connector |
| T20b | 20-pin connector |
| T28 | 28-pin connector |
| T28a | 28-pin connector |
| T32e | 32-pin connector |
| A1 | Positive connection (30a), in dash panel wiring harness |
| B170 | Positive connection 2 (30), in interior wiring harness |
| B219 | Positive connection 4 (30a), in interior wiring harness |
| R10 | Positive connection 1 (30), in driver door wiring harness |
| R16 | Positive connection 1 (30), in front passenger door wiring harness |
| S25 | Positive connection (30a), in central locking wiring harness |
| * | Up to August 2012 |
| *2 | From August 2012 |
| J126 | Fresh air blower control unit |
| J388 | Rear left door control unit |
| J389 | Rear right door control unit |
| J519 | Onboard supply control unit |
| J538 | Fuel pump control unit |
| SC | Fuse holder C |
| SC46 | Fuse 46 on fuse holder C |
| SC47 | Fuse 47 on fuse holder C |
| SC48 | Fuse 48 on fuse holder C |
| SC49 | Fuse 49 on fuse holder C |
| T6t | 6-pin connector |
| T10a | 10-pin connector |
| T10n | 10-pin connector |
| T16h | 16-pin connector |
| T16i | 16-pin connector |
| T18aa | 18-pin connector |
| T18ab | 18-pin connector |
| T28b | 28-pin connector |
| T28c | 28-pin connector |
| T52b | 52-pin connector |
| A62 | Connection (window regulators), in dash panel wiring harness |
| R19 | Positive connection 1 (30), in rear left door wiring harness |
| R23 | Positive connection 1 (30), in rear right door wiring harness |
| * | Up to August 2012 |
| *2 | Only models with Climatronic |
| *3 | From August 2012 |
| E176 | Driver seat lumbar support adjustment switch |
| J39 | Headlight washer system relay |
| J245 | Sliding sunroof adjustment control unit |
| J519 | Onboard supply control unit |
| J774 | Heated front seats control unit |
| SC | Fuse holder C |
| SC28 | Fuse 28 on fuse holder C |
| SC29 | Fuse 29 on fuse holder C |
| SC50 | Fuse 50 on fuse holder C |
| SC51 | Fuse 51 on fuse holder C |
| SC52 | Fuse 52 on fuse holder C |
| SC53 | Fuse 53 on fuse holder C |
| T6ah | 6-pin connector |
| T8z | 8-pin connector |
| T10c | 10-pin connector |
| T10e | 10-pin connector |
| T52b | 52-pin connector |
| V11 | Headlight washer system pump |
| A40 | Positive connection 1 (30), in dash panel wiring harness |
| B118 | Connection (driver side seat adjustment), in interior wiring harness |
| O1 | Positive connection (30), in seat heating wiring harness |
| * | Only models with seat heating |
| *2 | Cross section depends on equipment |
| E418 | Seat longitudinal adjustment button |
| E421 | Rake adjustment button |
| E424 | Seat height adjustment button |
| E425 | Backrest adjustment button |
| J503 | Control unit with display for radio and navigation |
| R | Radio |
| SC | Fuse holder C |
| SC42 | Fuse 42 on fuse holder C |
| S44 | Driver seat adjustment thermal fuse 1 |
| SC56 | Fuse 56 on fuse holder C |
| SC57 | Fuse 57 on fuse holder C |
| SC58 | Fuse 58 on fuse holder C |
| SC59 | Fuse 59 on fuse holder C |
| SC60 | Fuse 60 on fuse holder C |
| T10c | 10-pin connector |
| T16d | 16-pin connector |
| B188 | Positive connection 5 (30), in interior wiring harness |
| M1 | Positive connection 1 (30), in seat adjustment wiring harness |
| V21 | Positive connection (30), in radio - amplifier wiring harness |
| * | According to equipment |
| *2 | Only models with start/stop system |
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