Leon Mk2
| Assembly overview - cooling system, engine side: Engine codes ANU, AUY, BVK |
| 1 - | Oil cooler |
| 2 - | Thermostat |
| q | Removing and installing → Chapter. |
| q | Note installation position → Chapter. |
| q | Check: Heat thermostat in water |
| q | Opening begins at approx. 87 °C |
| q | Ends at approx. 102 °C. |
| q | Opening lift at least 7 mm. |
| 3 - | O-ring |
| q | Renew. |
| 4 - | Connection |
| q | For thermostat. |
| 5 - | Coolant pipe |
| 6 - | From heat exchanger |
| q | Coolant hose schematic diagram: |
| q | Engine code ANU → Chapter |
| q | Engine codes AUY, BVK → Chapter |
| 7 - | To heat exchanger |
| q | Coolant hose schematic diagram: |
| q | Engine code ANU → Chapter |
| q | Engine codes AUY, BVK → Chapter |
| 8 - | 10 Nm |
| 9 - | Cap |
| q | Check using cooling system tester -V.A.G 1274- and adapter -V.A.G 1274/9-. |
| q | Pressure relief valve must open at between 1.4 and 1.6 bar. |
| 10 - | Expansion tank |
| q | Test for leaks in cooling system using cooling system tester -V.A.G 1274- and adapter -V.A.G 1274/8-. |
| q | Observe markings → Chapter |
| 11 - | Connector |
| q | Black, 2-pin |
| 12 - | Connection |
| 13 - | To auxiliary heater (if fitted) |
| 14 - | From auxiliary heater (if fitted) |
| 15 - | Coolant temperature sender -G62- |
| q | For engine control unit. |
| q | Before removing, release pressure in cooling system if necessary. |
| 16 - | To cylinder head |
| 17 - | Securing clip |
| q | Check for secure seating. |
| 18 - | O-ring |
| q | Renew if damaged |
| 19 - | Thermal switch for air conditioning shut-off -F163- and Thermal switch for radiator fan third speed -F165- |
| q | Brown, 4-pin |
| q | For vehicles with air conditioning: → Heating, air conditioning system; Rep. Gr.87 |
| 20 - | To top of radiator |
| q | Coolant hose schematic diagram: |
| q | Engine code ANU → Chapter |
| q | Engine codes AUY, BVK → Chapter |
| 21 - | 15 Nm |
| 22 - | Connection |
| q | Secured with securing clip |
| q | Check for secure seating. |
| 23 - | Continued coolant circulation thermal switch -F95- |
| 24 - | Coolant circulation pump -V50- |
| q | For vehicles 06.00 ► fitted on plenum chamber |
| q | Black 2-pin connector |
| 25 - | Securing clip |
| 26 - | Connection |
| q | Fitted at cylinder block |
| 27 - | To coolant pump |
| 28 - | Coolant pump |
| q | Installed in cylinder block |
| q | Check for ease of movement. |
| q | Note installation position. |
| q | Removing and installing → Chapter. |
