| B | Starter |
| D | Ignition/starter switch |
| G70 | Air mass meter |
| J207 | Starter inhibitor relay |
| J217 | Automatic gearbox control unit |
| J623 | Engine control unit |
| S5 | Fuse in relay plate fuse holder |
| S231 | Fuse in fuse holder |
| T1 | Single connector, black, right engine compartment |
| T1d | Single connector, black, left engine compartment |
| T4x | 4-pin connector, black, near to the battery |
| T17e | 17-pin connector, white, coupling station on electronics box, plenum chamber |
| T17j | 17-pin connector, brown, coupling station on electronics box, plenum chamber |
| T94 | 94-pin connector, black |
| 501 | Screw connection 2 (30), on relay plate |
| A2 | Positive connection (15), in dash panel wiring harness |
| A32 | Positive connection (30), in dash panel wiring harness |
| A70 | Connection (15a, fuse 231), in dash panel wiring harness |
| D51 | Positive connection 1 (15), in engine compartment wiring harness |
| D97 | Connection (50), in engine compartment right wiring harness |
| * | for engine code BKN, ASB only |
| ** | For engine codes BWE, BPG only |
| *** | For engine codes BBK, BHF only |
| **** | for engine codes AUK, BKH only |
| E1 | Light switch |
| F189 | Tiptronic switch |
| J217 | Automatic gearbox control unit |
| N110 | Selector lever lock solenoid |
| T10j | 10-pin connector, black, on Tiptronic switch |
| T17d | 17-pin connector, red, coupling station on electronics box, plenum chamber |
| 238 | Earth connection 1, in interior wiring harness |
| A74 | Connection (15a, fuse 5), in dash panel wiring harness |
| B132 | Connection (number plate lights), in interior wiring harness |
| J217 | Automatic gearbox control unit |
| S286 | Automatic gearbox fuse, run-on |
| 12 | Earth point, on left in engine compartment |
| 83 | Earth connection 1, in front right wiring harness |
| 121 | Earth connection 2, in front right wiring harness |
| 500 | Screw connection 1 (30), on relay plate |
| D50 | Positive connection (30), in engine compartment wiring harness |
| F33 | Positive connection (30), in diesel direct injection system wiring harness |
| * | for engine code BKN, ASB only |
| ** | For engine codes BWE, BPG only |
| *** | For engine codes BBK, BHF only |
| **** | for engine codes AUK, BKH only |
| # | Cross-section 6,0 possible |
| J217 | Automatic gearbox control unit |
| J285 | Control unit in dash panel insert |
| J623 | Engine control unit |
| T16 | 16-pin connector, black, diagnostic connector |
| T17d | 17-pin connector, red, coupling station on electronics box, plenum chamber |
| T17e | 17-pin connector, white, coupling station on electronics box, plenum chamber |
| T32a | 32-pin connector, green, on dash panel insert |
| T94 | 94-pin connector, black |
| T121 | 121-pin connector, black |
| A76 | Connection (diagnosis wire K), in dash panel wiring harness |
| A121 | Connection (high bus), in dash panel wiring harness |
| A122 | Connection (low bus), in dash panel wiring harness |
| D159 | Connection (high bus), in engine compartment wiring harness |
| D160 | Connection (low bus), in engine compartment wiring harness |
| D166 | Connection (K-diagnosis wiring), in engine compartment wiring harness |
| * | for engine code BKN, ASB only |
| ** | for engine codes AUK, BKH, BWE, BPG only |
| *** | For engine code BBK only |
| **** | for engine codes AUK, BKH only |
| ***** | not for engine codes AUK, BKH only |
| ● | Data bus wire (CAN bus) |