A1
| Heater air inlet and vents |
| 1 - | Air inlet from plenum chamber |
| q | Fresh air mode |
| 2 - | Air inlet from passenger compartment |
| q | Air recirculation mode |
| 3 - | Heater |
| 4 - | To rear footwell vents |
| 5 - | To left footwell vent |
| 6 - | To dash panel air duct |
| q | With air duct to windscreen, left and right side window defroster vents and left and right dash panel vents |
| 7 - | To centre dash panel vent |
| 8 - | Supplementary air heater element -Z35- |
| q | For vehicles with TDI engine |
| 9 - | Heat exchanger |
| 10 - | To heat exchanger |
| q | Flows through heat exchanger and, if fitted, supplementary air heater element -Z35- |
| 11 - | To vents |
| 12 - | To right footwell vent |
