| J519 | Onboard power supply control unit |
| J532 | Voltage stabiliser, below the front left seat |
| SB8 | Fuse -8-, in the E box |
| SC28 | Fuse -28-, in fuse holder |
| T12w | 12-pin connector, at voltage stabiliser |
| T40a | 40-pin connector, at the E box |
| B320 | Positive connection -6- (30a), in interior wiring harness |
| B330 | Positive connection -16- (30a), in interior wiring harness |
| * | see valid current flow diagram for engine |
| J503 | Radio navigation system control unit |
| J519 | Onboard power supply control unit |
| R50 | Navigation aerial (GPS) |
| R51 | Radio/telephone/auxiliary heater aerial |
| R183 | Digital-radio-aerial |
| S258 | Radio navigation system fuse |
| T8c | 8-pin connector, on the radio navigation system control unit (black) |
| 377 | Earth connection -12-, in interior wiring harness |
| 610 | Earth point (audio), front below centre console |
| *1 | Navigation system aerial cable |
| *2 | Radio aerial cable |
| *3 | Telephone aerial cable |
| *4 | depending on equipment |
| only for vehicles with CD changer |
| Optional equipement |
| J412 | Mobile telephone operating electronics control unit (interface box), under the driver seat |
| J503 | Radio navigation system control unit |
| J519 | Onboard power supply control unit |
| R20 | Treble loudspeaker, front left |
| R21 | Bass loudspeaker, front left |
| R22 | Treble loudspeaker, front right |
| R23 | Bass loudspeaker, front right |
| R38 | Telephone microphone |
| T2c | 2-pin connector, at telephone microphone |
| T2l | 2-pin connector, at treble loudspeaker, front left |
| T2m | 2-pin connector, at treble loudspeaker, front right |
| T4g | 4-pin connector, at bass loudspeaker, front left |
| T4h | 4-pin connector, at bass loudspeaker, front right |
| T8d | 8-pin connector, on the radio navigation system control unit (brown) |
| T8e | 8-pin connector, on right A-pillar (black) |
| T8f | 8-pin connector, on left A-pillar (black) |
| T12u | 12-pin connector, on the radio navigation system control unit (green) |
| T54a | 54-pin connector, at mobile telephone operating electronics control unit (interface box) |
| *1 | only for vehicles with 4 loudspeakers |
| *2 | Optional equipement |
| only on vehicles with mobile telephone operating electronics control unit |
| J503 | Radio navigation system control unit |
| J519 | Onboard power supply control unit |
| J650 | Multimedia system control unit, behind dash panel |
| R14 | Treble loudspeaker, rear left |
| R15 | Bass loudspeaker, rear left |
| R16 | Treble loudspeaker, rear right |
| R17 | Bass loudspeaker, rear right |
| R199 | Connection for external audio sources |
| T2n | 2-pin connector, at treble loudspeaker, rear left |
| T2o | 2-pin connector, at treble loudspeaker, rear right |
| T4j | 4-pin connector, at bass loudspeaker, rear left |
| T4k | 4-pin connector, at bass loudspeaker, rear right |
| T8d | 8-pin connector, on the radio navigation system control unit (brown) |
| T8g | 8-pin connector, on left B-pillar (black) |
| T8h | 8-pin connector, on right B-pillar (black) |
| T12f | 12-pin connector, on the radio navigation system control unit (blue) |
| * | only for vehicles with 8 loudspeakers |
| only for vehicles with connection for external audio sources / multimedia socket MEDIA-IN |
| J503 | Radio navigation system control unit |
| J519 | Onboard power supply control unit |
| R41 | CD changer |
| T12f | 12-pin connector, on the radio navigation system control unit (blue) |
| T12g | 12-pin connector, at CD changer |
| A46 | Positive connection (30, from radio), in dash panel wiring harness |
| V14 | Connection (screening), in CD changer wiring harness |
| only for vehicles with CD changer |
| J119 | Multi-function display |
| J285 | Control unit in dash panel insert |
| J503 | Radio navigation system control unit |
| J519 | Onboard power supply control unit |
| J533 | Data bus diagnostic interface, below dash panel |
| K | Dash panel insert |
| T8c | 8-pin connector, on the radio navigation system control unit (black) |
| T20c | 20-pin connector, at data bus diagnostic interface |
| T32c | 32-pin connector, at dash panel insert |
| A178 | Connection (CAN H, infotainment), in dash panel insert wiring harness |
| A179 | Connection (CAN L, infotainment), in dash panel insert wiring harness |
| E230 | Heated rear window button |
| J9 | Heated rear window relay, at relay holder below the onboard power supply control unit |
| J519 | Onboard power supply control unit |
| R93 | Radio aerial 2 |
| R109 | Aerial module, right |
| R178 | Frequency filter for frequency modulation (FM) in the negative line |
| R179 | Frequency filter for frequency modulation (FM) in the positive line |
| SC25 | Fuse -25-, in fuse holder |
| T1a | 1-pin connector, on right C-pillar |
| T5c | 5-pin connector, on left C-pillar (black) |
| T5d | 5-pin connector, in the rear lid (brown) |
| T20b | 20-pin connector, on the heating and fresh air control |
| T52aa | 52-pin connector, on the onboard power supply control unit (black) |
| T52ab | 52-pin connector, on the onboard power supply control unit (white) |
| Z1 | Heated rear window |
| 62 | Earth point, on right C-pillar |
| 98 | Earth connection, in rear lid wiring harness |
| B327 | Positive connection -13- (30a), in interior wiring harness |
| * | only on vehicles with heating |