A4 Mk3
| Overview of backrest heating element (convenience seat) |

| 1 - | Wire |
| q | Permanently connected to backrest heating element |
| 2 - | Backrest bolster heating element |
| q | Bonded |
| q | Removing and installing → Chapter |
| 3 - | Padding |
| q | For backrest |
| 4 - | Backrest heating element (top) |
| q | Only bonded at edges to spacers |
| q | Removing and installing → Chapter |
| 5 - | Backrest heating element (bottom) |
| q | Only bonded at edges to spacers |
| q | Removing and installing → Chapter |
