| J104 | ABS control unit |
| J285 | Control unit in dash panel insert |
| J519 | Onboard supply control unit |
| J533 | Data bus diagnostic interface |
| SB7 | Fuse 7 on fuse holder B |
| SB26 | Fuse 26 on fuse holder B |
| SB40 | Fuse 40 on fuse holder B |
| SB51 | Fuse 51 on fuse holder B |
| T16b | 16-pin connector |
| T26a | 26-pin connector |
| T32a | 32-pin connector |
| T32b | 32-pin connector |
| T47b | 47-pin connector |
| U31 | Diagnostic connection |
| 32 | Earth point, on left behind dash panel |
| 371 | Earth connection 6, in main wiring harness |
| 373 | Earth connection 8, in main wiring harness |
| 385 | Earth connection 20, in main wiring harness |
| 392 | Earth connection 27, in main wiring harness |
| 639 | Earth point, left A-pillar |
| B277 | Positive connection 1 (15a) in main wiring harness |
| B278 | Positive connection 2 (15a) in main wiring harness |
| B280 | Positive connection 4 (15a) in main wiring harness |
| B315 | Positive connection 1 (30a) in main wiring harness |
| B321 | Positive connection 7 (30a) in main wiring harness |
| B392 | Connection 3 (powertrain CAN bus, low), in main wiring harness |
| B444 | Connection 1 (diagnosis), in main wiring harness |
| J104 | ABS control unit |
| J217 | Automatic gearbox control unit |
| J234 | Airbag control unit |
| J393 | Convenience system central control unit |
| J518 | Entry and start authorisation control unit |
| J519 | Onboard supply control unit |
| J527 | Steering column electronics control unit |
| J567 | Left headlight range control unit |
| J568 | Right headlight range control unit |
| J646 | Transfer box control unit |
| J647 | Axle differential lock control unit |
| J742 | Anti-roll bar uncoupling control unit |
| T10d | 10-pin connector, on E-box in engine compartment |
| T14c | 14-pin connector |
| T14d | 14-pin connector |
| T16a | 16-pin connector |
| T23a | 23-pin connector |
| T23c | 23-pin connector |
| T47b | 47-pin connector |
| T47c | 47-pin connector |
| T52 | 52-pin connector |
| T81 | 81-pin connector |
| T84 | 84-pin connector |
| 385 | Earth connection 20, in main wiring harness |
| B387 | Connection 5 (powertrain CAN bus, high), in main wiring harness |
| B388 | Connection 6 (powertrain CAN bus, high), in main wiring harness |
| B392 | Connection 3 (powertrain CAN bus, low), in main wiring harness |
| B394 | Connection 5 (powertrain CAN bus, low), in main wiring harness |
| B395 | Connection 6 (powertrain CAN bus, low), in main wiring harness |
| B444 | Connection 1 (diagnosis), in main wiring harness |
| B445 | Connection 2 (diagnosis), in main wiring harness |
| B509 | Connection 3 (diagnosis), in main wiring harness |
| J197 | Adaptive suspension control unit |
| J217 | Automatic gearbox control unit |
| J352 | Steering column and belt height adjustment control unit |
| J386 | Driver door control unit |
| J446 | Parking aid control unit |
| J519 | Onboard supply control unit |
| J527 | Steering column electronics control unit |
| J646 | Transfer box control unit |
| T4y | 4-pin connector |
| T10ae | 10-pin connector |
| T16a | 16-pin connector |
| T20 | 20-pin connector |
| T21 | 21-pin connector, on left A-pillar |
| T26a | 26-pin connector |
| T47a | 47-pin connector |
| T52 | 52-pin connector |
| T121 | 121-pin connector |
| B384 | Connection 2 (powertrain CAN bus, high), in main wiring harness |
| B391 | Connection 2 (powertrain CAN bus, low), in main wiring harness |
| B397 | Connection 1 (convenience CAN bus, high), in main wiring harness |
| B405 | Connection 9 (convenience CAN bus, high), in main wiring harness |
| B406 | Connection 1 (convenience CAN bus, low), in main wiring harness |
| B414 | Connection 9 (convenience CAN bus, low), in main wiring harness |
| E265 | Operating and display unit for rear air conditioning system |
| J255 | Climatronic control unit |
| J387 | Front passenger door control unit |
| J389 | Rear right door control unit |
| J502 | Tyre Pressure Monitoring System control unit |
| J518 | Entry and start authorisation control unit |
| J521 | Front passenger seat adjustment with memory control unit |
| T4ba | 4-pin connector |
| T10ag | 10-pin connector |
| T10ak | 10-pin connector |
| T10i | 10-pin connector, green |
| T10n | 10-pin connector |
| T16cb | 16-pin connector |
| T21a | 21-pin connector, on right A-pillar |
| T21c | 21-pin connector, on right B-pillar |
| T24cc | 24-pin connector |
| T32h | 32-pin connector |
| T81 | 81-pin connector |
| B402 | Connection 6 (convenience CAN bus, high), in main wiring harness |
| B403 | Connection 7 (convenience CAN bus, high), in main wiring harness |
| B405 | Connection 9 (convenience CAN bus, high), in main wiring harness |
| B411 | Connection 6 (convenience CAN bus, low), in main wiring harness |
| B412 | Connection 7 (convenience CAN bus, low), in main wiring harness |
| B414 | Connection 9 (convenience CAN bus, low), in main wiring harness |
| J136 | Seat and steering column adjustment control unit with memory |
| J345 | Trailer detector control unit |
| J388 | Rear left door control unit |
| J393 | Convenience system central control unit |
| R12 | Amplifier |
| T4at | 4-pin connector |
| T10aj | 10-pin connector |
| T10p | 10-pin connector |
| T12b | 12-pin connector |
| T12h | 12-pin connector |
| T21b | 21-pin connector, on left B-pillar |
| T23a | 23-pin connector |
| T24a | 24-pin connector |
| B398 | Connection 2 (convenience CAN bus, high), in main wiring harness |
| B404 | Connection 8 (convenience CAN bus, high), in main wiring harness |
| B407 | Connection 2 (convenience CAN bus, low), in main wiring harness |
| B413 | Connection 8 (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 |
| * | Only models with preparation for trailer coupling |
| *2 | Only models with 12-channel sound system |
| J400 | Wiper motor control unit |
| J412 | Mobile telephone operating electronics control unit |
| J499 | Telematics control unit |
| J503 | Control unit with display for radio and navigation |
| J603 | Vehicle position recognition control unit |
| J702 | Roof display unit |
| R | Radio |
| T8au | 8-pin connector |
| T10a | 10-pin connector |
| T10l | 10-pin connector |
| T16e | 16-pin connector |
| T16r | 16-pin connector |
| T18a | 18-pin connector |
| T42 | 42-pin connector |
| B415 | Connection 1 (infotainment CAN bus, high), in main wiring harness |
| B421 | Connection 1 (infotainment CAN bus, low), in main wiring harness |
| B540 | Connection (infotainment CAN bus, high), in roof wiring harness |
| B541 | Connection (infotainment CAN bus, low), in roof wiring harness |
| * | Only models with diesel engine |
| *2 | Only models with petrol engine |
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