A4 Mk3
Diagram of coolant hose connections |
Connection diagram for coolant hoses without 4/2-way valve (vehicles without auxiliary heater): |
1 - | ATF cooler |
q | Not installed on vehicles with manual gearbox |
2 - | Engine oil cooler |
q | Removing and installing → Chapter |
3 - | Exhaust gas recirculation cooler |
q | Removing and installing → Chapter |
4 - | Radiator outlet coolant temperature sender -G83- |
q | Removing and installing → Chapter |
5 - | Coolant temperature sender -G62- |
q | Removing and installing → Chapter |
6 - | Coolant shut-off valve |
q | Not fitted on all versions |
q | Depending on production period and version of vehicle |
q | For vehicles with auxiliary heater → Rep. gr.82 |
7 - | Bleeder hole |
8 - | Heat exchanger |
q | If renewed, refill system with fresh coolant |
9 - | Coolant circulation pump -V50- |
q | Only installed on vehicles with start/stop system |
10 - | Non-return valve |
11 - | Hose thermostat |
12 - | Non-return valve |
13 - | Coolant expansion tank |
q | With filler cap |
q | Checking cooling system for leaks → Chapter |
14 - | Pump for exhaust gas recirculation cooler -V400- |
15 - | Hose thermostat |
q | Not fitted on all versions |
q | Depending on production period and version of vehicle |
16 - | Coolant pump |
q | Removing and installing → Chapter |
17 - | Thermostat |
q | Removing and installing → Chapter |
18 - | Cylinder head/cylinder block |
q | If renewed, refill system with fresh coolant |
19 - | Radiator |
q | Removing and installing → Chapter |
q | If renewed, refill system with fresh coolant |
Connection diagram for coolant hoses without 4/2-way valve (vehicles with auxiliary heater): |
1 - | ATF cooler |
q | Not installed on vehicles with manual gearbox |
2 - | Engine oil cooler |
q | Removing and installing → Chapter |
3 - | Exhaust gas recirculation cooler |
q | Removing and installing → Chapter |
4 - | Radiator outlet coolant temperature sender -G83- |
q | Removing and installing → Chapter |
5 - | Coolant temperature sender -G62- |
q | Removing and installing → Chapter |
6 - | Circulation pump -V55- |
7 - | Auxiliary heater |
8 - | Heater coolant shut-off valve -N279- |
9 - | Non-return valve |
10 - | Bleeder hole |
11 - | Heat exchanger |
q | If renewed, refill system with fresh coolant |
12 - | Hose thermostat |
13 - | Non-return valve |
14 - | Coolant expansion tank |
q | With filler cap |
q | Checking cooling system for leaks → Chapter |
15 - | Pump for exhaust gas recirculation cooler -V400- |
16 - | Hose thermostat |
q | Not fitted on all versions |
q | Depending on production period and version of vehicle |
17 - | Coolant pump |
q | Removing and installing → Chapter |
18 - | Thermostat |
q | Removing and installing → Chapter |
19 - | Cylinder head/cylinder block |
q | If renewed, refill system with fresh coolant |
20 - | Radiator |
q | Removing and installing → Chapter |
q | If renewed, refill system with fresh coolant |
Connection diagram for coolant hoses with 4/2-way valve with thermostat (vehicles without auxiliary heater): |
1 - | ATF cooler |
q | Not installed on vehicles with manual gearbox |
2 - | Engine oil cooler |
q | Removing and installing → Chapter |
3 - | Exhaust gas recirculation cooler |
q | Removing and installing → Chapter |
4 - | Radiator outlet coolant temperature sender -G83- |
q | Removing and installing → Chapter |
5 - | Coolant temperature sender -G62- |
q | Removing and installing → Chapter |
6 - | Coolant shut-off valve |
q | Not fitted on all versions |
q | Depending on production period and version of vehicle |
q | Activated via Climatronic coolant shut-off valve -N422- |
7 - | Bleeder hole |
8 - | Heat exchanger |
q | If renewed, refill system with fresh coolant |
9 - | Coolant circulation pump -V50- |
q | Only installed on vehicles with start/stop system |
10 - | Non-return valve |
11 - | Hose thermostat |
12 - | Coolant expansion tank |
q | With filler cap |
q | Checking cooling system for leaks → Chapter |
13 - | Pump for exhaust gas recirculation cooler -V400- |
14 - | Coolant pump |
q | Removing and installing → Chapter |
15 - | 4/2-way valve with thermostat |
q | Removing and installing → Chapter |
q | The thermostat is located in the interior of the 4/2-way valve and cannot be renewed separately |
16 - | Cylinder head/cylinder block |
q | If renewed, refill system with fresh coolant |
17 - | Radiator |
q | Removing and installing → Chapter |
q | If renewed, refill system with fresh coolant |
Connection diagram for coolant hoses with 4/2-way valve with thermostat (vehicles with auxiliary heater): |
1 - | ATF cooler |
q | Not installed on vehicles with manual gearbox |
2 - | Engine oil cooler |
q | Removing and installing → Chapter |
3 - | Exhaust gas recirculation cooler |
q | Removing and installing → Chapter |
4 - | Radiator outlet coolant temperature sender -G83- |
q | Removing and installing → Chapter |
5 - | Coolant temperature sender -G62- |
q | Removing and installing → Chapter |
6 - | Circulation pump -V55- |
7 - | Auxiliary heater |
8 - | Heater coolant shut-off valve -N279- |
9 - | Bleeder hole |
10 - | Heat exchanger |
q | If renewed, refill system with fresh coolant |
11 - | Non-return valve |
12 - | Hose thermostat |
13 - | Coolant expansion tank |
q | With filler cap |
q | Checking cooling system for leaks → Chapter |
14 - | Pump for exhaust gas recirculation cooler -V400- |
15 - | Coolant pump |
q | Removing and installing → Chapter |
16 - | 4/2-way valve with thermostat |
q | Removing and installing → Chapter |
q | The thermostat is located in the interior of the 4/2-way valve and cannot be renewed separately |
17 - | Cylinder head/cylinder block |
q | If renewed, refill system with fresh coolant |
18 - | Radiator |
q | Removing and installing → Chapter |
q | If renewed, refill system with fresh coolant |