| Number | X-pin, colour | Description |
|---|---|---|
| X1805 | 13-pin, black | Plug connector Electronic immobilizer control unit (EWS) |
| Pin | Type | Description / Signal type | Connection / Measuring notes |
|---|---|---|---|
| 1 | A | Terminal 50 | Integrated supply module (IVM) |
| 2 | E | Terminal 50 | Fuse F105 |
| 3 | Not used | ||
| 4 | A | Communication link (EWS) | DME control unit |
| 5 | E | Signal, ring coil ignition lock | Ring coil |
| 6 | Not used | ||
| 7 | Not used | ||
| 8 | A | Signal, gearshift position L2 | Transmission control |
| 9 | E | Terminal 31 | Ground connection X1108 |
| 10 | E | Voltage supply terminal 30 | Fuse F11 |
| 11 | E | Terminal R | Fuse F39 |
| 12 | E | Signal, ring coil ignition lock | Ring coil |
| 13 | E/A | K-bus signal line | Connector, K-bus X10116 |