| A | Battery |
| B | Starter |
| J519 | Vehicle voltage control unit |
| SA5 | Fuse 5 on fuse holder A |
| SB3 | Fuse 3 on fuse holder B |
| SB6 | Fuse 6 on fuse holder B |
| SB7 | Fuse 7 on fuse holder B |
| SB12 | Fuse 12 on fuse holder B |
| SB17 | Fuse 17 on fuse holder B |
| SB19 | Fuse 19 on fuse holder B |
| T40a | 40-pin connector, at the E box |
| T52a | 52-pin connector, at onboard supply control unit (black) |
| T52b | 52-pin connector, at onboard supply control unit (white) |
| T52c | 52-pin connector, at onboard supply control unit (brown) |
| 1 | Earth strap, battery body |
| 12 | Earth point on left in engine compartment |
| 14 | Earth point on gearbox |
| 366 | Earth connection 1 in main wiring harness |
| 371 | Earth connection 6 in main wiring harness |
| B317 | Positive connection 3 (30a) in main wiring harness |
| G70 | Air mass meter |
| J13 | Fresh air blower relay |
| J345 | Trailer detector control unit |
| J519 | Vehicle voltage control unit |
| J667 | Power output module for left headlight |
| J668 | Power output module for right headlight |
| N79 | Heating resistor for crankcase ventilation |
| SC7 | Fuse 7 on fuse holder C |
| SC8 | Fuse 8 on fuse holder C |
| SC9 | Fuse 9 on fuse holder C |
| SC10 | Fuse 10 on fuse holder C |
| SC11 | Fuse 11 on fuse holder C |
| T14c | 14-pin connector, at left headlight |
| T14d | 14-pin connector, at right headlight |
| B273 | Positive connection (15) in main wiring harness |
| J255 | Climatronic control unit |
| J301 | Air conditioning system control unit |
| J386 | Door control unit, driver side |
| J387 | Door control unit, front passenger side |
| J388 | Door control unit, rear left |
| J389 | Door control unit, rear right |
| J519 | Vehicle voltage control unit |
| R64 | Auxiliary heating radio controlled receiver |
| SC12 | Fuse 12 on fuse holder C |
| SC13 | Fuse 13 on fuse holder C |
| SC14 | Fuse 14 on fuse holder C |
| SC15 | Fuse 15 on fuse holder C |
| SC16 | Fuse 16 on fuse holder C |
| SC17 | Fuse 17 on fuse holder C |
| T52b | 52-pin connector, at onboard supply control unit (white) |
| B316 | Positive connection 2 (30a) in main wiring harness |
| B321 | Positive connection 7 (30a) in main wiring harness |
| B323 | Positive connection 9 (30a) in main wiring harness |
| B325 | Positive connection 11 (30a) in main wiring harness |
| B333 | Positive connection 19 (30a) in main wiring harness |
| E313 | Selector lever |
| J17 | Fuel pump relay |
| J126 | Fresh air blower control unit |
| J386 | Door control unit, driver side |
| J387 | Door control unit, front passenger side |
| J519 | Vehicle voltage control unit |
| J538 | Fuel pump control unit |
| J749 | Additional heater fuel pump relay |
| SC22 | Fuse 22 on fuse holder C |
| SC23 | Fuse 23 on fuse holder C |
| SC24 | Fuse 24 on fuse holder C |
| SC25 | Fuse 25 on fuse holder C |
| SC26 | Fuse 26 on fuse holder C |
| SC27 | Fuse 27 on fuse holder C |
| T10j | 10-pin connector, behind right dash panel |
| B315 | Positive connection 1 (30a) in main wiring harness |
| B320 | Positive connection 6 (30a) in main wiring harness |
| B325 | Positive connection 11 (30a) in main wiring harness |
| *1 | on vehicles without auxiliary heating |
| *2 | on vehicles with auxiliary heating |
| G273 | Interior monitoring sensor |
| H12 | Alarm horn |
| J39 | Headlight washer system relay |
| J245 | Sliding sunroof control unit |
| J388 | Door control unit, rear left |
| J389 | Door control unit, rear right |
| J519 | Vehicle voltage control unit |
| J774 | Heated front seat control unit |
| SC32 | Fuse 32 on fuse holder C |
| SC33 | Fuse 33 on fuse holder C |
| SC34 | Fuse 34 on fuse holder C |
| SC35 | Fuse 35 on fuse holder C |
| SC36 | Fuse 36 on fuse holder C |
| SC37 | Fuse 37 on fuse holder C |
| B322 | Positive connection 8 (30a) in main wiring harness |
| B324 | Positive connection 10 (30a) in main wiring harness |
| E22 | Intermittent wiper switch |
| E34 | Rear wiper switch |
| E38 | Intermittent wiper control |
| J519 | Vehicle voltage control unit |
| J527 | Steering column electronics control unit |
| T20a | 20-pin connector, at steering column electronics control unit |
| 366 | Earth connection 1 in main wiring harness |
| 371 | Earth connection 6 in main wiring harness |
| 605 | Earth point on top end of steering column |
| 639 | Earth point on left A-pillar |
| B397 | Connection 1 (convenience CAN bus, High) in main wiring harness |
| B406 | Connection 1 (convenience CAN bus, Low) in main wiring harness |
| D | Ignition starter switch |
| E86 | Multi-function display call-up button |
| E109 | Multi-function display, memory switch |
| F319 | Selector lever locked in position P switch |
| J519 | Vehicle voltage control unit |
| J527 | Steering column electronics control unit |
| N376 | Ignition key withdrawal lock solenoid |
| T20a | 20-pin connector, at steering column electronics control unit |
| T52c | 52-pin connector, at onboard supply control unit (brown) |
| B518 | Connection (86s), in main wiring harness |
| *1 | not valid for vehicles with multi-function steering wheel |
| *2 | for vehicles with automatic Gearbox |
| G397 | Rain and light detector sensor |
| J400 | Wiper motor control unit |
| J519 | Vehicle voltage control unit |
| T3e | 3-pin connector, on rain and light detector sensor |
| T4d | 4-pin connector, at windscreen wiper motor, driver side |
| T52a | 52-pin connector, at onboard supply control unit (black) |
| T52b | 52-pin connector, at onboard supply control unit (white) |
| V5 | Windscreen washer pump |
| V216 | Windscreen wiper motor, driver side |
| 368 | Earth connection 3 in main wiring harness |
| 375 | Earth connection 10 in main wiring harness |
| B316 | Positive connection 2 (30a) in main wiring harness |
| B528 | Connection 1 (LIN-Bus) in main wiring harness |
| E1 | Light switch |
| E7 | Fog light switch |
| E18 | Rear fog light switch |
| J519 | Vehicle voltage control unit |
| L9 | Lamp for light switch illumination |
| T10b | 10-pin connector, at light switch |
| T52a | 52-pin connector, at onboard supply control unit (black) |
| T52b | 52-pin connector, at onboard supply control unit (white) |
| 368 | Earth connection 3 in main wiring harness |
| B316 | Positive connection 2 (30a) in main wiring harness |
| B340 | Connection 1 (58d) in main wiring harness |
| B341 | Connection 2 (58d) in main wiring harness |
| *1 | on vehicles with fog lights |
| J519 | Vehicle voltage control unit |
| L22 | Fog light bulb, left |
| L23 | Fog light bulb, right |
| M1 | Side light bulb, left |
| M5 | Turn signal bulb, front left |
| M29 | Dipped beam bulb, left |
| M30 | Main beam bulb, left |
| T10c | 10-pin connector, at left headlight |
| T52a | 52-pin connector, at onboard supply control unit (black) |
| T52c | 52-pin connector, at onboard supply control unit (brown) |
| V48 | Headlight range control motor, left |
| 367 | Earth connection 2 in main wiring harness |
| 375 | Earth connection 10 in main wiring harness |
| 376 | Earth connection 11 in main wiring harness |
| 671 | Earth point 1 at front left longitudinal member |
| B279 | Positive connection 3 (15a) in main wiring harness |
| B455 | Connection (HRC) in main wiring harness |
| *1 | on vehicles with fog lights |
| *2 | not valid for vehicles with headlights with gas discharge lamps |
| E20 | Switch and instrument lighting rheostat |
| E102 | Headlight range control adjuster |
| J519 | Vehicle voltage control unit |
| L54 | Bulb for lighting of headlight range control adjuster |
| M3 | Side light bulb, right |
| M7 | Turn signal bulb, front right |
| M31 | Dipped beam bulb, right |
| M32 | Main beam bulb, right |
| T8a | 8-pin connector, at switch and instrument lighting rheostat |
| T10d | 10-pin connector, at right headlight |
| T52a | 52-pin connector, at onboard supply control unit (black) |
| T52b | 52-pin connector, at onboard supply control unit (white) |
| T52c | 52-pin connector, at onboard supply control unit (brown) |
| V49 | Headlight range control motor, right |
| 13 | Earth point, on right in engine compartment |
| 367 | Earth connection 2 in main wiring harness |
| 376 | Earth connection 11 in main wiring harness |
| 639 | Earth point on left A-pillar |
| B279 | Positive connection 3 (15a) in main wiring harness |
| B340 | Connection 1 (58d) in main wiring harness |
| B455 | Connection (HRC) in main wiring harness |
| *2 | not valid for vehicles with headlights with gas discharge lamps |
| J519 | Vehicle voltage control unit |
| L46 | Rear fog light bulb, left |
| M4 | Tail light bulb, left |
| M6 | Turn signal bulb, rear left |
| M16 | Reversing light bulb, left |
| M21 | Brake and tail light bulb, left |
| T2a | 2-pin connector, in rear lid, left (blue) |
| T2b | 2-pin connector, in rear lid, left (black) |
| T3b | 3-pin connector, in rear lid, left (blue) |
| T3c | 3-pin connector, on left tail light, in rear lid |
| T4a | 4-pin connector, on left tail light |
| T52a | 52-pin connector, at onboard supply control unit (black) |
| T52c | 52-pin connector, at onboard supply control unit (brown) |
| Y7 | Automatic anti-dazzle interior mirror |
| 50 | Earth point in luggage compartment, left |
| 98 | Earth connection in rear lid wiring harness |
| 370 | Earth connection 5 in main wiring harness |
| B520 | Connection (RF) in main wiring harness |
| *1 | on vehicles with automatic anti-dazzle mirrors |
| J519 | Vehicle voltage control unit |
| L47 | Rear fog light bulb, right |
| M2 | Tail light bulb, right |
| M8 | Turn signal bulb, rear right |
| M17 | Reversing light bulb, right |
| M22 | Brake and tail light bulb, right |
| T3a | 3-pin connector, in rear lid, left (black) |
| T3b | 3-pin connector, in rear lid, left (blue) |
| T3d | 3-pin connector, on right tail light, in rear lid |
| T4b | 4-pin connector, on right tail light |
| T52a | 52-pin connector, at onboard supply control unit (black) |
| T52c | 52-pin connector, at onboard supply control unit (brown) |
| 51 | Earth point in luggage compartment, right |
| 98 | Earth connection in rear lid wiring harness |
| 369 | Earth connection 4 in main wiring harness |
| J9 | Heated rear window relay |
| J519 | Vehicle voltage control unit |
| M25 | Bulb for high level brake light |
| T11a | 11-pin connector, in luggage compartment, right |
| T52a | 52-pin connector, at onboard supply control unit (black) |
| T52b | 52-pin connector, at onboard supply control unit (white) |
| T52c | 52-pin connector, at onboard supply control unit (brown) |
| X | Number plate light |
| Z1 | Heated rear window |
| 51 | Earth point in luggage compartment, right |
| 370 | Earth connection 5 in main wiring harness |
| B316 | Positive connection 2 (30a) in main wiring harness |
| B642 | Positive connection (58) in main wiring harness |
| *1 | not valid for vehicles with rear window aerial 1 |
| E229 | Hazard warning lights button |
| F | Brake light switch |
| F4 | Reversing light switch |
| F47 | Brake pedal switch |
| J519 | Vehicle voltage control unit |
| J623 | Engine control unit |
| K6 | Hazard warning light system warning lamp |
| L76 | Bulb for button lighting |
| T4c | 4-pin connector, at brake pedal switch |
| T6a | 6-pin connector, at hazard warning lights button |
| T52a | 52-pin connector, at onboard supply control unit (black) |
| T52b | 52-pin connector, at onboard supply control unit (white) |
| T52c | 52-pin connector, at onboard supply control unit (brown) |
| 367 | Earth connection 2 in main wiring harness |
| 368 | Earth connection 3 in main wiring harness |
| 373 | Earth connection 8 in main wiring harness |
| B280 | Positive connection 4 (15a) in main wiring harness |
| B335 | Connection 1 (54) in main wiring harness |
| *1 | not valid for vehicles with automatic gearbox Gearbox |
| *2 | see current flow diagram engine |
| E139 | Sliding sunroof adjustment regulator |
| E616 | Deactivation button of interior monitoring and vehicle inclination |
| J519 | Vehicle voltage control unit |
| L76 | Bulb for button lighting |
| L150 | Centre console illumination bulb |
| T6b | 6-pin connector, on the front interior light |
| T52b | 52-pin connector, at onboard supply control unit (white) |
| T52c | 52-pin connector, at onboard supply control unit (brown) |
| W1 | Front interior light |
| W13 | Front passenger reading light |
| W19 | Reading lamp, driver side |
| Y7 | Automatic anti-dazzle interior mirror |
| 368 | Earth connection 3 in main wiring harness |
| B341 | Connection 2 (58d) in main wiring harness |
| B559 | Positive connection 1 (30g) in main wiring harness |
| B632 | Connection (interior light, 31) in main wiring harness |
| *1 | for vehicles with anti-theft alarm system |
| *2 | for vehicles with electrical sliding roof |
| *3 | on vehicles with automatic anti-dazzle mirrors |
| F147 | Vanity mirror contact switch, driver side |
| F148 | Vanity mirror contact switch, front passenger side |
| J519 | Vehicle voltage control unit |
| T5a | 5-pin connector, on the rear interior light |
| W14 | illuminated vanity mirror, front passenger side |
| W20 | illuminated vanity mirror, driver side |
| W43 | Rear interior light |
| W44 | Rear centre reading light |
| 368 | Earth connection 3 in main wiring harness |
| B559 | Positive connection 1 (30g) in main wiring harness |
| F256 | Rear lid lock unit |
| J519 | Vehicle voltage control unit |
| T2b | 2-pin connector, in rear lid, left (black) |
| T3a | 3-pin connector, in rear lid, left (black) |
| T3b | 3-pin connector, in rear lid, left (blue) |
| T4e | 4-pin connector, rear lid lock unit |
| T52a | 52-pin connector, at onboard supply control unit (black) |
| T52b | 52-pin connector, at onboard supply control unit (white) |
| V53 | Central locking motor in rear lid |
| W6 | Glove box light |
| W18 | Luggage compartment light, left |
| W35 | Luggage compartment light |
| 98 | Earth connection in rear lid wiring harness |
| 373 | Earth connection 8 in main wiring harness |
| B447 | Connection (luggage compartment light) in main wiring harness |
| B559 | Positive connection 1 (30g) in main wiring harness |
| J519 | Vehicle voltage control unit |
| T10e | 10-pin connector, under driver seat |
| T10f | 10-pin connector, under front passenger seat |
| T52b | 52-pin connector, at onboard supply control unit (white) |
| W9 | Left footwell light |
| W10 | Right footwell light |
| W45 | Rear left footwell light |
| W46 | Rear right footwell light |
| 367 | Earth connection 2 in main wiring harness |
| 368 | Earth connection 3 in main wiring harness |
| 373 | Earth connection 8 in main wiring harness |
| B433 | Connection (footwell light) in main wiring harness |
| *1 | Optional equipement |
| J519 | Vehicle voltage control unit |
| L50 | Rear centre ashtray light bulb |
| L159 | Storage compartment illumination bulb in rear centre console |
| T4f | 4-pin connector, on the digital clock |
| Y2 | Digital clock |
| 372 | Earth connection 7 in main wiring harness |
| 374 | Earth connection 9 in main wiring harness |
| 638 | Earth point on right A-pillar |
| B316 | Positive connection 2 (30a) in main wiring harness |
| B341 | Connection 2 (58d) 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 |
| D2 | Immobilizer reading coil |
| F9 | Handbrake warning switch |
| F34 | Brake fluid level warning contact |
| J285 | Control unit in dash panel insert |
| J362 | Immobilizer control unit |
| J519 | Vehicle voltage control unit |
| K | Dash panel insert |
| K7 | Dual circuit and hand brake system warning light |
| T32a | 32-pin connector, at dash panel insert |
| 371 | Earth connection 6 in main wiring harness |
| 374 | Earth connection 9 in main wiring harness |
| 377 | Earth connection 12 in main wiring harness |
| B278 | Positive connection 2 (15a) in main wiring harness |
| G17 | Ambient temperature sensor |
| G32 | Coolant shortage indicator sender |
| G33 | Windscreen washer fluid level sender |
| J119 | Multi-function display |
| J285 | Control unit in dash panel insert |
| J519 | Vehicle voltage control unit |
| K | Dash panel insert |
| K28 | Coolant temperature and coolant shortage indicator warning light |
| K106 | Washer fluid low warning lamp |
| T32a | 32-pin connector, at dash panel insert |
| 410 | Earth connection 1 (sender earth) in main wiring harness |
| *1 | Optional equipement |
| *2 | on vehicles with multi-function display (MFD) |
| F266 | Bonnet contact switch |
| G34 | Brake lining/pad wear sender, front left |
| G266 | Oil level and oil temperature sender |
| J285 | Control unit in dash panel insert |
| J519 | Vehicle voltage control unit |
| K | Dash panel insert |
| K32 | Brake pad/lining warning light |
| K38 | Oil level warning light |
| T6j | 6-pin connector, on front left in engine compartment (black) |
| T32a | 32-pin connector, at dash panel insert |
| T52a | 52-pin connector, at onboard supply control unit (black) |
| 367 | Earth connection 2 in main wiring harness |
| 376 | Earth connection 11 in main wiring harness |
| J285 | Control unit in dash panel insert |
| J519 | Vehicle voltage control unit |
| K | Dash panel insert |
| K19 | Seat belt warning light |
| K29 | Glow period warning light |
| K83 | Exhaust emissions warning lamp |
| K116 | Rear lid open warning light |
| K132 | Electronic power control fault lamp |
| K161 | Electro/mechanical power steering warning light |
| K166 | Door open warning light |
| K170 | Bulb failure warning light |
| K171 | Bonnet open warning light |
| K231 | Diesel particle filter warning light |
| *1 | for petrol engines |
| *2 | for diesel engines |
| *3 | for vehicles with diesel particle filter |
| G5 | Rev. Counter |
| G21 | Speedometer |
| H3 | Buzzer and gong |
| J245 | Sliding sunroof control unit |
| J285 | Control unit in dash panel insert |
| J519 | Vehicle voltage control unit |
| J533 | Data bus diagnostic interface |
| K | Dash panel insert |
| K169 | Selector lever lock warning light |
| K220 | Warning light for tyre pressure display |
| T8m | 8-pin connector, at radio (black) |
| T20c | 20-pin connector, at data bus diagnostic interface |
| T32a | 32-pin connector, at dash panel insert |
| Y4 | Odometer display |
| Y6 | Selector lever position indicator |
| B464 | Connection (speed signal) in main wiring harness |
| *1 | for vehicles with automatic Gearbox |
| *2 | on vehicles with electrical sliding roof or with radio pre-installation - Aftermarket |
| *3 | for vehicles with electrical sliding roof |
| *4 | on vehicles with radio pre-installation - Aftermarket |
| J519 | Vehicle voltage control unit |
| J533 | Data bus diagnostic interface |
| T20c | 20-pin connector, at data bus diagnostic interface |
| T52c | 52-pin connector, at onboard supply control unit (brown) |
| B383 | Connection 1 (drive train CAN bus High) in main wiring harness |
| B390 | Connection 1 (drive train CAN bus Low) 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 |
| B415 | Connection 1 (Infotainment CAN bus, High) in main wiring harness |
| B421 | Connection 1 (Infotainment CAN bus, Low) in main wiring harness |
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