| D | Ignition/starter switch |
| E87 | Operating and display unit for Climatronic air conditioning system |
| G56 | Dash panel temperature sensor |
| J44 | Magnetic clutch relay |
| J255 | Climatronic control unit |
| L75 | Digital display illumination bulb |
| L76 | Button illumination bulb |
| N25 | Air conditioning system magnetic clutch |
| S5 | Fuse in relay plate fuse holder |
| T1g | Single connector, green, on servo oil reservoir on left in engine compartment |
| T3k | 3-pin connector, grey, left A-pillar coupling station |
| 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 | Central flap control motor potentiometer |
| G114 | Footwell/defroster flap control motor potentiometer |
| J... | Engine control unit |
| J255 | Climatronic control unit |
| S15 | Fuse in relay plate fuse holder |
| T6a | 6-pin connector, black, central behind dash panel |
| T6b | 6-pin connector, blue, central behind dash panel |
| T15s | 15-pin connector, red, on protective housing for control units on left in engine compartment |
| T16a | 16-pin connector, black |
| T16b | 16-pin connector, brown |
| T20 | 20-pin connector, red |
| V70 | Central flap control motor |
| V85 | Footwell and 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 instrument panel wiring harness |
| E15 | Heated rear window switch |
| G89 | Fresh air intake duct temperature sensor |
| G107 | Sunlight penetration photosensor |
| G113 | Potentiometer - servomotor for air flow flap |
| G191 | Centre vent temperature sender |
| J... | Engine control unit |
| J255 | Climatronic control unit |
| T4a | 4-pin connector, black |
| T6c | 6-pin connector, black |
| T12 | 12-pin connector, black |
| T15s | 15-pin connector, red, on protective housing for control units on left in engine compartment |
| T16a | 16-pin connector, black |
| T20 | 20-pin connector, red |
| V71 | Servomotor for air flow flap |
| 199 | Earth connection 3, in dash panel wiring harness |
| A58 | Connection (5 volt), in instrument panel wiring harness |
| A64 | Connection (RPM signal), in dash panel wiring harness |
| --- | Only models with automatic gearbox |
| G92 | Potentiometer for temperature flap control motor |
| J31 | Automatic intermittent wash and wipe relay |
| J255 | Climatronic control unit |
| T6d | 6-pin connector, red, centre behind dash panel |
| T12 | 12-pin connector, black |
| T16 | 16-pin connector, 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 dash panel wiring harness |
| A76 | Connection (K-diagnosis wire), in dash panel wiring harness |
| A156 | Connection (53c), in dash panel wiring harness |
| F129 | Air conditioning system pressure switch |
| F189 | Tiptronic switch |
| G17 | Ambient temperature sensor |
| G192 | Footwell vent temperature sender |
| G263 | Evaporator output temperature sender |
| J255 | Climatronic control unit |
| J285 | Control unit in dash panel insert |
| T2b | 2-pin connector |
| T4e | 4-pin connector, front left in engine compartment |
| T14k | 14-pin connector, black |
| T15k | 15-pin connector, grey, left A-pillar coupling station, T15m - 15-pin connector, brown, right 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 |
| 151 | Earth point 1, in front wiring harness |
| 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 |
| * | Only models with automatic gearbox |
| ** | From May 2003 |
| J126 | Fresh air blower control unit |
| J255 | Climatronic control unit |
| J285 | Control unit 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 |
| * | Only with solar roof, see current flow diagram for solar roof |
| F18 | Thermal switch for radiator fan |
| 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 | Radiator fan fuse for 1st speed |
| S102 | Engine control unit fuse |
| T2a | 2-pin connector, front left in engine compartment |
| T15k | 15-pin connector, grey, left A-pillar coupling station |
| V7 | Radiator fan |
| 30 | Earth point 1, next to relay plate |
| 127 | Earth connection 1, in air conditioning system compressor wiring harness, 500 - Screw connection 1 (30), on relay plate |
| 503 | Screw connection (75x), on relay plate |
| A15 | Positive connection (15), in instrument panel wiring harness |
| * | Only models with diesel engine |
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