A4 Mk3
Note| Vehicles without auxiliary heater |
| 1 - | Radiator |
| q | Vehicles with multitronic gearbox 0AW or dual clutch gearbox 0B5: with ATF cooler |
| q | If renewed, refill system with fresh coolant |
| 2 - | Radiator outlet coolant temperature sender -G83- |
| 3 - | Map-controlled engine cooling system thermostat -F265- |
| 4 - | Cylinder block |
| q | Cylinder bank 1 (right-side) |
| q | If renewed, refill system with fresh coolant |
| 5 - | Non-return valve |
| 6 - | Cylinder head |
| q | Cylinder bank 1 (right-side) |
| q | If renewed, refill system with fresh coolant |
| 7 - | Non-return valve |
| 8 - | Bleeder screw |
| 9 - | Heat exchanger for heater |
| q | Removing and installing → Rep. gr.87 |
| q | If renewed, refill system with fresh coolant |
| 10 - | Coolant circulation pump -V50- |
| q | Removing and installing → Rep. gr.87 |
| 11 - | Coolant temperature sender -G62- |
| 12 - | Exhaust gas recirculation cooler |
| q | If renewed, refill system with fresh coolant |
| 13 - | Non-return valve |
| 14 - | Non-return valve |
| 15 - | Cylinder head |
| q | Cylinder bank 2 (left-side) |
| q | If renewed, refill system with fresh coolant |
| 16 - | Filler cap |
| q | Checking pressure relief valve → Anchor |
| 17 - | Coolant expansion tank |
| 18 - | Non-return valve |
| 19 - | Cylinder block |
| q | Cylinder bank 2 (left-side) |
| q | If renewed, refill system with fresh coolant |
| 20 - | Coolant shut-off valve |
| 21 - | Temperature sender for engine temperature regulation -G694- |
| 22 - | Engine oil cooler |
| q | If renewed, refill system with fresh coolant |
| 23 - | Coolant pump |
| Vehicles with auxiliary heater |
| 1 - | Radiator |
| q | Vehicles with multitronic gearbox 0AW or dual clutch gearbox 0B5: with ATF cooler |
| q | If renewed, refill system with fresh coolant |
| 2 - | Radiator outlet coolant temperature sender -G83- |
| 3 - | Map-controlled engine cooling system thermostat -F265- |
| 4 - | Auxiliary heater |
| q | With circulation pump -V55- |
| q | Removing and installing → Rep. gr.82 |
| 5 - | Cylinder block |
| q | Cylinder bank 1 (right-side) |
| q | If renewed, refill system with fresh coolant |
| 6 - | Non-return valve |
| 7 - | Cylinder head |
| q | Cylinder bank 1 (right-side) |
| q | If renewed, refill system with fresh coolant |
| 8 - | Non-return valve |
| 9 - | Heater coolant shut-off valve -N279- |
| q | Removing and installing → Rep. gr.87 |
| 10 - | Bleeder screw |
| 11 - | Heat exchanger for heater |
| q | Removing and installing → Rep. gr.87 |
| q | If renewed, refill system with fresh coolant |
| 12 - | Coolant circulation pump -V50- |
| q | Removing and installing → Rep. gr.87 |
| 13 - | Coolant temperature sender -G62- |
| 14 - | Exhaust gas recirculation cooler |
| q | If renewed, refill system with fresh coolant |
| 15 - | Non-return valve |
| 16 - | Non-return valve |
| 17 - | Cylinder head |
| q | Cylinder bank 2 (left-side) |
| q | If renewed, refill system with fresh coolant |
| 18 - | Filler cap |
| q | Checking pressure relief valve → Anchor |
| 19 - | Coolant expansion tank |
| 20 - | Non-return valve |
| 21 - | Cylinder block |
| q | Cylinder bank 2 (left-side) |
| q | If renewed, refill system with fresh coolant |
| 22 - | Coolant shut-off valve |
| 23 - | Temperature sender for engine temperature regulation -G694- |
| 24 - | Engine oil cooler |
| q | If renewed, refill system with fresh coolant |
| 25 - | Coolant pump |