The coolant temperature is too high, the control lamp flashes while driving
Too little coolant in the system
- The expansion tank must be filled to the maximum mark. Add fluid if necessary. Check the tightness of the cooling system by contacting a workshop
The thermostat does not open. Coolant circulates only in the small circuit
- Check if the hoses going to the radiator get hot. If not, remove and check the thermostat. Replace if necessary
Radiator fins dirty
- Blow out the radiator from the engine side with compressed air
Radiator clogged with lime deposits or rust. Radiator hoses do not get hot
- Replace heatsink
Radiator fan not working
- Replace viscous fan belt
- Check the tightness of the thermoswitch and electric fan plugs
- Check the thermal switch of the electric fan, make sure it is receiving power (ignition on, thermal switch plug contacts bridged). If power is on, replace the electric fan
Defective steam valve on the cover of the expansion tank
- Check the pressure cooling system. Replace cover if necessary
Faulty coolant temperature gauge
- Check the coolant temperature gauge sensor and the gauge itself