Coolant temperature too high, indicator light flashes while driving
There is too little coolant in the system
- The expansion tank must be filled to the maximum mark. If necessary, add liquid. Check the tightness of the cooling system by contacting the workshop
Thermostat does not open. Coolant circulates only in the small circuit
- Check if the hoses leading to the radiator are hot. If not, remove and check the thermostat. Replace it if necessary
The radiator fins are dirty
- Blow out the radiator from the engine side with compressed air
Radiator clogged with limescale or rust. Radiator hoses not heating up
- Replace the radiator
The radiator fan does not work
- Replace the viscous fan belt
- Check the reliability of the fastening of the plugs of the thermal switch and the electric fan
- Check the fan's thermal switch to make sure it is receiving power (ignition on, contacts of the thermal switch plug are shorted)if power is supplied, then replace the electric fan
Defective steam valve on expansion tank cap
- Pressure test the cooling system. Replace the cap if necessary
Coolant temperature gauge is faulty
- Check the coolant temperature gauge sensor and the gauge itself