Polo Mk4
| Cooling system components on engine side |
| 1 - | Connection |
| 2 - | Auto-locking bolt, 9Nm |
| 3 - | Fastening pin |
| q | Replace. |
| 4 - | Thermostatic valve |
| q | Check operation: Heat valve with water. Thermal element pin must move outward. |
| q | Temperature test: Opening start (approx. 84°C) and opening closure (approx. 98°C) cannot be performed. |
| 5 - | To the heat exchanger |
| q | Cooling fluid hose connection diagram → Chapter. |
| 6 - | Cooling fluid container |
| q | Cooling fluid hose connection diagram → Chapter. |
| 7 - | Thermostatic valve body |
| 8 - | Of heat exchanger |
| q | Cooling fluid hose connection diagram → Chapter. |
| 9 - | Cooling fluid tube |
| q | Cooling fluid hose connection diagram → Chapter. |
| 10 - | Sealing ring |
| q | Replace. |
| 11 - | Water pump body on engine block |
| 12 - | Fastener |
| q | Ensure proper fastening. |
| 13 - | 10Nm |
| 14 - | Cooling fluid temperature sensor -G62- |
| q | Of engine command unit. |
| q | If necessary, depressurize system before removal. |
| 15 - | Plug |
| q | If necessary, depressurize system before removal. |
| 16 - | Fastener |
| q | Ensure proper fastening. |
| 17 - | Auto-locking bolt, 6Nm |
| 18 - | Support |
| 19 - | For radiator, below |
| q | Cooling fluid hose connection diagram → Chapter. |
| 20 - | For radiator, on top |
| q | Cooling fluid hose connection diagram → Chapter. |
