Location:
| | Designation of connector: |
| A - | Motronic control unit -J220- | | B - | 81-pin connector -T81- | | C - | 40-pin connector -T40- | | – | in engine compartment, bottom left -arrow- | | |
| | Designation of connector: |
| A - | Radiator fan control unit -J293- | | B - | 4-pin connector, on radiator fan control unit -T4v- | | C - | 14-pin connector, on radiator fan control unit -T14- | | – | in engine compartment, right -arrow- | | |
| | Designation of connector: |
| A - | Automatic gearbox control unit -J217- | | B - | 68-pin connector, on automatic gearbox control unit -T68- | | – | behind the door trim, front left -arrow- | | |
| | Designation of connector: |
| A - | Driver door control unit -J386- | | B - | 29-pin connector, on driver door control unit -T29- | | – | behind the door trim, front right -arrow- | | |
| | Designation of connector: |
| A - | Front passenger door control unit -J387- | | B - | 29-pin connector, on front passenger door control unit -T29a- | | – | behind the door trim, rear left -arrow- | | |
| | Designation of connector: |
| A - | Rear left door control unit -J388- | | B - | 18-pin connector, on left rear door control unit -T18- | | – | behind the door trim, rear right -arrow- | | |
| | Designation of connector: |
| A - | Rear right door control unit -J389- | | B - | 18-pin connector, on left rear door control unit -T18b- | | – | In centre console, under radio -arrow- | | |
| | Designation of connector: |
| E - | Climatronic control unit -J255- | | A - | 12-pin connector, on Climatronic control unit -T12c- | | B - | 20-pin connector, on Climatronic control unit -T20- | | C - | 16-pin connector, on Climatronic control unit -T16b- | | D - | 16-pin connector, on Climatronic control unit -T16a- | | – | Behind glove compartment, front passenger side -arrow- | | |
| | Designation of connector: |
| A - | Convenience system central control unit -J393- | | B - | 15-pin connector, on convenience system central control unit -T15- | | C - | 23-pin connector, on convenience system central control unit -T23- | | – | Behind instrument cluster-arrow- | | |
| | Designation of connector: |
| A - | Control unit with display in dash panel insert -J285- | | C - | 32-pin connector, blue, on instrument cluster control unit with indicator unit -T32- | | 8 - | Coolant temperature indicator sensor | | 22 - | Coolant shortage indicator sender | | 29 - | Brake fluid level warning contact | | 31 - | Front left belt switch | | B - | 32-pin connector, green, on instrument cluster control unit with indicator unit -T32a- | | 2 - | Immobilizer reader coil | | 4 - | Terminal for CAN-Bus / control | | 6 - | Windscreen washer fluid level sender | | 8 - | Terminal for CAN-Bus "high" - convenience - | | 9 - | Terminal for CAN-Bus "low" - convenience - | | 12 - | Radiator fan control unit | | 13 - | Handbrake warning switch | | 14 - | Terminal for ASR/ESP | | 17 - | Immobilizer reader coil | | 19 - | Terminal for CAN-Bus high | | 20 - | Terminal for CAN-Bus low | | 22 - | Contact switch on bonnet / bonnet for alarm system | | 23 - | Multifunction display memory switch | | 24 - | Multifunction display memory switch | | 25 - | Multifunction display memory switch | | 26 - | Ambient temperature sensor | | 27 - | Terminal for CAN-Bus high | | 28 - | Terminal for CAN-Bus low | | – | under centre console -arrow- | | |
| | Designation of connector: |
| A - | Airbag control unit -J234- | | B - | 75-pin connector, on airbag control unit -T75- | | – | In engine compartment, left -arrow- | | |
| | Designation of connector: |
| A - | ABS control unit -J104- | | B - | 47-pin connector, on ABS control unit -T47- | | – | Behind right luggage compartment lining-arrow- | | |
| | Designation of connector: |
| A - | Parking aid control unit -J446- | | B - | 16-pin connector, on parking aid control unit -T16z- | | C - | 12-pin connector, on parking aid control unit -T12ka- | |