Overheat:
- lack of coolant in the cooling system;
- the thermostat is faulty;
- the radiator or its grill is dirty;
- the radiator fan is faulty;
- the temperature sensor is faulty;
- plugs in the cooling system;
- Expansion tank cap defective.
Low engine temperature:
- the thermostat is faulty;
- the temperature sensor is faulty;
- radiator fan defective.
Coolant leaks:
- damage to hoses or their unreliable fastening with clamps;
- the radiator of the cooling system or the radiator of the heater is leaky;
- the plug of the expansion tank is faulty;
- water pump seal leaking;
- boiling coolant due to overheating;
- plugs in the cooling system.
Internal coolant leak:
- broken cylinder head gasket;
- cracks in the cylinder head or cylinder block.
Corrosion:
- the coolant is changed irregularly;
- using the wrong type of coolant.
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