| Number | X-pin, colour | Description |
|---|---|---|
| X18021 | 3-pin, Black | Plug connector Rear centre left converter |
| Pin | Type | Description / Signal type | Connection / Measuring notes |
|---|---|---|---|
| 1 | A | Positive activation, rear centre left converter | Parking aid control unit |
| 2 | A | Signal line, rear centre left converter | Parking aid control unit |
| 3 | M | Ground, rear centre left converter | Parking aid control unit |