| E9 | Fresh air blower switch |
| E35 | Air conditioner switch |
| E159 | Fresh air/air recirculating flap switch |
| J166 | Amplifier for illumination |
| L16 | Fresh air regulation light bulb |
| L44 | Seat heating adjuster illumination bulb |
| N24 | Fresh air blower series resistor with overheating fuse |
| S225 | Fuse in fuse holder |
| T2g | 2-pin connector, at fresh air blower |
| T3a | 3-pin connector, on fresh air and air recirculation flap control motor |
| T4f | 4-pin connector, at fresh air blower series resistor |
| T6d | 6-pin connector, at fresh air blower switch |
| T7b | 7-pin connector, at seat heating adjuster |
| T8a | 8-pin connector, on fresh air and air recirculation flap switch |
| T10n | 10-pin connector, behind right dash panel (only on vehicles with air conditioning system) |
| V2 | Fresh air blower |
| V154 | Fresh air and recirculated air flap control motor |
| 43 | Earth point, on right A-pillar |
| 162 | Earth connection, in blower motor wiring harness |
| A3 | Positive connection (58), in wiring harness behind dash panel |
| A4 | Positive connection (58b), in wiring harness behind dash panel |
| A20 | Positive connection (15a), in wiring harness behind dash panel |
| L13 | Positive connection, in fresh air blower wiring harness |
| L66 | Positive connection, in fresh air blower wiring harness |
| * | only for vehicles with seat heating |
| F14 | Coolant temperature warning switch (+119 °C) |
| F18 | Radiator fan thermal switch |
| F38 | Ambient temperature switch (+5 °C) |
| F129 | Air conditioner pressure switch |
| J293 | Radiator fan control unit |
| N25 | Air conditioning system magnetic coupling |
| T2o | 2-pin connector, at coolant temperature control switch |
| T2p | 2-pin connector, at ambient temperature switch |
| T2r | 2-pin connector, for air conditioning system magnetic coupling |
| T3g | 3-pin connector, at radiator fan thermal switch |
| T3h | 3-pin connector, in the holder on the left radiator |
| T3s | 3-pin connector, in the holder on the left radiator |
| T4r | 4-pin connector, at radiator fan control unit |
| T4s | 4-pin connector, at air conditioner pressure switch |
| T4t | 4-pin connector, in the holder on the starter |
| T6a | 6-pin connector, in plenum chamber (red) |
| T10m | 10-pin connector, at radiator fan control unit |
| V7 | Radiator fan |
| 12 | Earth point, below the battery on the left |
| 188 | Earth connection, in front left wiring harness |
| L5 | Connection -1-, in front left wiring harness |
| L6 | Connection -2-, in front left wiring harness |
| L9 | Connection, in front left wiring harness |
| L10 | Positive connection, in wiring harness behind dash panel, left |
| J217 | Control unit for automatic gearbox |
| J220 | Motronic control unit |
| J248 | Diesel direct injection system control unit |
| J293 | Radiator fan control unit |
| J361 | Simos control unit |
| J382 | 1AV control unit |
| S133 | Fuse in fuse holder on the battery |
| S164 | Fuse in fuse holder on the battery |
| T3f | 3-pin connector, on the fuse holder on the battery |
| T4r | 4-pin connector, at radiator fan control unit |
| T6a | 6-pin connector, in plenum chamber (red) |
| T10m | 10-pin connector, at radiator fan control unit |
| T52a | 52-pin connector, at the engine control units |
| T68a | 68-pin connector, at control unit for automatic gearbox |
| A20 | Positive connection (15a), in wiring harness behind dash panel |
| A40 | Positive connection (30), in wiring harness behind dash panel, left |
| D50 | Positive connection (30), in front left wiring harness |
| P1 | Positive connection (30), in fuse holder on the battery |
| * | only on vehicles with automatic gearbox |
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