A4 Cabriolet Mk2
| Diagram of coolant hose connections |
| 1 - | Radiator |
| q | Removing and installing → Chapter |
| q | If renewed, refill system with fresh coolant |
| 2 - | Coolant hose (bottom) |
| 3 - | Return hose from turbocharger |
| q | With bypass thermostat in hose |
| 4 - | Coolant pump |
| q | Removing and installing → Chapter |
| 5 - | Turbocharger |
| q | Removing and installing → Chapter |
| 6 - | Thermostat |
| q | Removing and installing → Chapter |
| q | Starts to open at approx. 87°C |
| 7 - | Engine oil cooler |
| q | Removing and installing → Chapter |
| 8 - | Cylinder head/cylinder block |
| q | If renewed, refill system with fresh coolant |
| 9 - | Coolant connecting pipe |
| 10 - | Bleeder hole |
| 11 - | Heat exchanger (for heating system) |
| q | If renewed, refill system with fresh coolant |
| 12 - | Bleeder screw |
| q | Tightening torque 20 Nm |
| 13 - | Expansion tank |
| q | With filler cap |
| q | Testing pressure relief valve in filler cap → Chapter |
| 14 - | Coolant pipe |
| 15 - | Coolant hose (top) |
