| Number | X-pin, colour | Description |
|---|---|---|
| X58 | 8-pin, black | Plug connector Heating blower relay |
| Pin | Type | Description / Signal type | Connection / Measuring notes |
|---|---|---|---|
| 1 | Not used | ||
| 2 | E | Terminal 30 | Fuse F37 |
| 3 | Not used | ||
| 4 | E | Terminal 15 | Fuse F28 |
| 5 | Not used | ||
| 6 | A | Terminal 15 via relay for blower output stage | Blower output stage (IHKA) Blower switch |
| 7 | Not used | ||
| 8 | M | Ground | Ground point |