| Number | X-pin, colour | Description |
|---|---|---|
| X642 | 2-pin, black | Plug connector Independent park heating control unit |
| X764 | 6-pin, black | Plug connector Independent park heating control unit |
| Pin | Type | Description / Signal type | Connection / Measuring notes |
|---|---|---|---|
| 1 | E | Terminal 30 | Fuse F64 |
| 2 | M | Ground | Ground point |
| Pin | Type | Description / Signal type | Connection / Measuring notes |
|---|---|---|---|
| 1 | Not used | ||
| 2 | E/A | K-bus signal | Instrument cluster control unit |
| 3 | A | Signal, independent heating ON | Dual-function switch recirculated air/rear window defogger |
| 4 | Not used | ||
| 5 | Not used | ||
| 6 | E | Signal Metering pump, independent park heating | Metering pump, independent park heating |