| Pin | Type | Description / Signal type | Connection /
Measuring notes |
|---|
| 1 | A | Lower chamber of lumbar support, driver's side | Valve block, driver's lumbar support |
| | | |
| 2 | M | Ground | Ground connector with memory: Driver's seat memory control unit |
| | | |
| 3 | M | Ground Motor, driver's seat lumbar support | Motor, driver's seat lumbar support |
| | | |
| 4 | E | Terminal 30 | Fuse F65 with memory: Driver's seat memory control unit |
| | | |
| 5 | A | Pump for lumbar support | Valve block, driver's lumbar support |
| | | |
| 6 | A | Upper chamber of lumbar support, driver's side | Valve block, driver's lumbar support |
| | | |