| D | Ignition/starter switch |
| E87 | Control and display unit for air conditioner/Climatronic |
| G56 | Dash panel temperature sensor |
| J44 | Magnetic coupling relay |
| J255 | Climatronic control unit |
| L75 | Digital display illumination |
| L76 | Button illumination |
| N25 | Air conditioning system magnetic coupling |
| S5 | Fuse in fuse box/relay plate |
| T3k | 3-pin connector, grey, connector point left A-pillar |
| T16a | 16-pin connector, black |
| V42 | Temperature sensor blower |
| A2 | Positive (+) connection (15), in dash panel wiring harness |
| A74 | Connection (15a, fuse 5), in dash panel wiring harness |
| G112 | Control motor potentiometer, central flap |
| G114 | Control motor potentiometer, footwell/defroster flap |
| J... | Engine control unit |
| J255 | Climatronic control unit |
| S15 | Fuse in fuse box/relay plate |
| T6a | 6-pin connector, black, behind dash panel, centre |
| T6b | 6-pin connector, blue, behind dash panel, centre |
| T15s | 15-pin connector, red, on control unit protective housing, in engine compartment, left |
| T16a | 16-pin connector, black |
| T16b | 16-pin connector, brown |
| T20 | 20-pin connector, red |
| V70 | Central flap control motor |
| V85 | Footwell/defroster flap control motor |
| 199 | Earth connection -3-, in dash panel wiring harness |
| A1 | Positive (+) connection (30a), in dash panel wiring harness |
| A58 | Connection (5 volt), in instruments wiring harness |
| E15 | Heated rear window switch |
| G89 | Fresh air intake duct temperature sensor |
| G107 | Sunlight penetration photosensor |
| G113 | Control motor potentiometer, air flow flap |
| G191 | Vent temperature sender, centre |
| J... | Engine control unit |
| J255 | Climatronic control unit |
| T4a | 4-pin connector, black |
| T6c | 6-pin connector, black |
| T12 | 12-pin connector, black |
| T16a | 16-pin connector, black |
| T20 | 20-pin connector, red |
| V71 | Air flow flap control motor |
| 199 | Earth connection -3-, in dash panel wiring harness |
| A58 | Connection (5 volt), in instruments wiring harness |
| A64 | Connection (rpm boost), in dash panel wiring harness |
| G92 | Control motor potentiometer for temperature flap |
| J31 | Automatic intermittent wash/wipe relay |
| J255 | Climatronic control unit |
| T6d | 6-pin connector, red, behind dash panel, centre |
| T12 | 12-pin connector, black |
| T16 | 16-pin connector, near handbrake lever, self-diagnosis connection |
| T16a | 16-pin connector, black |
| T16b | 16-pin connector, brown |
| T20 | 20-pin connector, red |
| V68 | Temperature flap control motor |
| 199 | Earth connection -3-, in dash panel wiring harness |
| A49 | Connection -1-, in dash panel wiring harness |
| A58 | Connection (5 volt), in instruments wiring harness |
| A76 | Connection (diagnosis wire K), in dash panel wiring harness |
| A156 | Connection (53c), in dash panel wiring harness |
| F129 | Air conditioner pressure switch |
| F189 | Tiptronic switch |
| G17 | Ambient temperature sensor |
| G192 | Footwell vent temperature sender |
| G263 | Evaporator out-flow temperature sender |
| J255 | Climatronic control unit |
| J285 | Control unit with display in dash panel insert |
| T2b | 2-pin connector |
| T4e | 4-pin connector, on left in front of engine compartment |
| T14k | 14-pin connector, black |
| T15k | 15-pin connector, grey, left A-pillar coupling station |
| T16b | 16-pin connector, brown |
| T20 | 20-pin connector, red |
| T32a | 32-pin connector, blue, on dash panel insert |
| T32b | 32-pin connector, green, on dash panel insert |
| 199 | Earth connection 3, in dash panel wiring harness |
| 269 | Earth connection (sender earth) 1, in dash panel wiring harness |
| A73 | Connection (ambient temperature display), in dash panel wiring harness |
| L9 | Connection 1, in air conditioning system wiring harness |
| * | Applies only to models with an automatic gearbox |
| ** | Applies only models with radiator fan control unit |
| *** | From May 2003 |
| J126 | Fresh air blower control unit |
| J255 | Climatronic control unit |
| J285 | Control unit with display in dash panel insert |
| J309 | Solar cell isolation relay * |
| J355 | Solar operation control unit * |
| S225 | Fuse in fuse holder |
| T6 | 6-pin connector |
| T15k | 15-pin connector, grey, left A-pillar coupling station |
| T16a | 16-pin connector, black |
| T16b | 16-pin connector, brown |
| T20 | 20-pin connector, red |
| T32b | 32-pin connector, green, on dash panel insert |
| V2 | Fresh air blower |
| 30 | Earth point 1, next to relay plate |
| 81 | Earth connection 1, in dash panel wiring harness |
| 135 | Earth connection 2, in dash panel wiring harness |
| 503 | Screw connection (75x), on relay plate |
| A36 | Connection (75a), in dash panel wiring harness |
| A146 | Connection (convenience CAN bus, high), in dash panel wiring harness |
| A147 | Connection (convenience CAN bus, low), in dash panel wiring harness |
| * | Applies only models without radiator fan control unit |
| ** | Applies only models with radiator fan control unit |
| *** | Only for solar roof, see solar roof Current Flow Diagram |
| F18 | Radiator fan thermo-switch |
| J... | Engine control unit |
| J279 | Radiator fan V7 and V35 relay - 1st speed |
| J280 | Radiator fan V7 relay, 2nd speed |
| J397 | Radiator fan run-on relay |
| N39 | Radiator fan series resistor |
| S42 | Radiator fan single fuse |
| S51 | Fuse |
| S102 | Engine control unit fuse |
| T2a | 2-pin connector, in engine compartment, front left |
| T14k | 14-pin connector, black |
| T15k | 15-pin connector, grey, connector point left A-pillar |
| V7 | Radiator fan |
| 30 | Earth point -1-, next to relay plate |
| 127 | Earth connection -1-, in air conditioner compressor wiring harness |
| 151 | Earth connection -1-, in front wiring harness |
| 500 | Screw connection -1- (30), on relay plate |
| 503 | Screw connection (75x), on relay plate |
| * | Only models with diesel engine |
| ** | Only models with fan control unit |
| *** | Only models without fan control unit |
| C | Alternator |
| F18 | Radiator fan thermo-switch |
| J293 | Radiator fan control unit |
| S42 | Radiator fan single fuse |
| S51 | Radiator fan relay fuse |
| T2p | 2-pin connector |
| T2q | 2-pin connector, in engine compartment, front left |
| T6p | 6-pin connector |
| T14k | 14-pin connector, black |
| T15k | 15-pin connector, grey, connector point left A-pillar |
| V35 | Radiator fan, right |
| V51 | Continued circulation of coolant pump |
| 151 | Earth connection -1-, in front wiring harness |
| 500 | Screw connection -1- (30), on relay plate |
| A17 | Connection (61), in dash panel wiring harness |
| L10 | Connection -2-, in air conditioner wiring harness |
| L11 | Connection -3-, in air conditioner wiring harness |
| ** | Only models with fan control unit |
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