| J285 | Control unit in dash panel insert |
| J519 | Onboard supply control unit |
| J533 | Data bus diagnostic interface |
| J702 | Roof display unit |
| SC36 | Fuse 36 on fuse holder C, right |
| T16 | 16-pin connector, diagnosis connection under left dash panel |
| T16r | 16-pin connector |
| T26a | 26-pin connector |
| T32b | 32-pin connector, green |
| 378 | Earth connection 13, in main wiring harness |
| 639 | Earth point, left A-pillar |
| B324 | Positive connection 10 (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 |
| 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 compass |
| G241 | Coolant temperature sender for heater |
| J162 | Heater control unit (in auxiliary coolant heater) |
| J519 | Onboard supply control unit |
| N279 | Heater coolant shut-off valve |
| Q8 | Glow plug with flame monitor |
| SB4 | Fuse 4 on fuse holder B left |
| T2i | 2-pin connector |
| T2k | 2-pin connector |
| T2m | 2-pin connector |
| T2n | 2-pin connector |
| T6m | 6-pin connector |
| T14g | 14-pin connector, under front left wing |
| V6 | Combustion air blower |
| V54 | Metering pump, under centre tunnel |
| 12 | Earth point, on left in engine compartment |
| 35 | Earth point, under front passenger seat |
| 384 | Earth connection 19, in main wiring harness |
| 399 | Earth connection 34, in main wiring harness |
| 400 | Earth connection 35, in main wiring harness |
| 417 | Earth connection 9, in engine compartment wiring harness |
| 647 | Earth point 3, on bulkhead |
| * | only models with auxiliary coolant heater and can operated independently |
| J162 | Heater control unit (in auxiliary coolant heater) |
| J519 | Onboard supply control unit |
| R11 | Aerial |
| R149 | Remote control receiver for auxiliary coolant heater, rear of roof, centre |
| SB2 | Fuse 2 on fuse holder B left |
| T6m | 6-pin connector |
| T6at | 6-pin connector |
| T14g | 14-pin connector, under front left wing |
| 51 | Earth point, on right in luggage compartment |
| 369 | Earth connection 4, in main wiring harness |
| * | only models with auxiliary coolant heater and can operated independently |
| J160 | Circulation pump relay |
| J255 | Climatronic control unit |
| J496 | Additional coolant pump relay |
| SB2 | Fuse 2 on fuse holder B left |
| T2p | 2-pin connector |
| T6k | 6-pin connector, brown, electronics box engine compartment |
| T14g | 14-pin connector, under front left wing |
| T17 | 17-pin connector |
| T24cc | 24-pin connector |
| V55 | Circulation pump |
| 12 | Earth point, on left in engine compartment |
| 32 | Earth point, on left behind dash panel insert |
| 373 | Earth connection 8, in main wiring harness |
| 374 | Earth connection 9, in main wiring harness |
| 384 | Earth connection 19, in main wiring harness |
| 417 | Earth connection 9, in engine compartment wiring harness |
| * | only models with auxiliary coolant heater and can operated independently |
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