| B | Starter |
| D | Ignition/starter switch |
| J226 | Starter inhibitor and reversing light relay, on the 13 position additional relay carrier |
| M16 | Reversing light bulb, left |
| M17 | Reversing light bulb, right |
| S15 | Fuse in fuse box |
| T5h | 5-pin connector, near lower part of left A- pillar, entwined in wiring harness |
| T6 | 6-pin connector, brown, in control unit protective housing, in plenum chamber, left |
| T10 | 10-pin connector, orange, in protective housing for connectors, in plenum chamber, left |
| T10g | 10-pin connector, grey, in control unit protective housing, in plenum chamber, left |
| 114 | Earth connection, in automatic gearbox wiring harness |
| 501 | Screw connection -2- (30), on relay plate |
| A32 | Positive (+) connection (30), in dash panel wiring harness |
| A87 | Connection (RL), in dash panel wiring harness |
| A98 | Positive (+) connection-4-(30), in dash panel wiring harness |
| B182 | Connection (reversing light), in interior wiring harness |
| E20 | Switches and instruments, lighting control |
| F | Brake light switch |
| F189 | Tiptronic switch |
| G68 | Vehicle speed sender |
| G182 | Gearbox input speed sender |
| G265 | Intermediate shaft speed sender |
| J217 | Automatic gearbox control unit, in plenum chamber, centre |
| K142 | Selector lever position P/N warning lamp |
| L101 | Selector lever display illumination |
| T3c | 3-pin connector |
| T8a | 8-pin connector |
| T10e | 10-pin connector, black, in control unit protective housing, in plenum chamber, left |
| T10g | 10-pin connector, grey, in control unit protective housing, in plenum chamber, left |
| T20b | 20-pin connector, on gearbox |
| T68a | 68-pin connector |
| 81 | Earth connection -1-, in dash panel wiring harness |
| A4 | Positive (+) connection (58b), in dash panel wiring harness |
| A18 | Connection (54), in dash panel wiring harness |
| J104 | ABS/ABS with EDL control unit |
| J217 | Automatic gearbox control unit, in plenum chamber, centre |
| J220 | Motronic control unit |
| J533 | Data bus diagnostic interface, in dash panel insert |
| T10w | 10-pin connector, white, in protective housing for connectors, in plenum chamber, left |
| T32a | 32-pin connector, green, on dash panel insert |
| T47a | 47-pin connector, ABS/ABS with EDL/TCS/ESP control unit (from August 2000) |
| T68a | 68-pin connector |
| T121 | 121-pin connector |
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| 81 | Earth connection -1-, in dash panel wiring harness |
| 135 | Earth connection -2-, in dash panel wiring harness |
| A121 | Connection (high bus), in dash panel wiring harness |
| A122 | Connection (low bus), in dash panel wiring harness |
| D | Ignition/starter switch |
| J217 | Automatic gearbox control unit, in plenum chamber, centre |
| J285 | Control unit with display in dash panel insert |
| J542 | Brake servo control unit |
| N110 | Selector lever lock solenoid |
| S7 | Fuse in fuse box |
| S11 | Fuse in fuse box |
| S231 | Fuse in fuse box |
| T6j | 6-pin connector, in engine compartment, left |
| T6k | 6-pin connector |
| T10g | 10-pin connector, grey, in control unit protective housing, in plenum chamber, left |
| T32 | 32-pin connector, blue |
| T68a | 68-pin connector |
| A2 | Positive (+) connection (15), in dash panel wiring harness |
| B163 | Positive (+) connection -1- (15), in interior wiring harness |
| B165 | Positive (+) connection -2- (15), in interior wiring harness |
| U8 | Connection (15a), in automatic gearbox wiring harness |
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- | |