2014 VW EOS. When I turn on the cabin heater to high and fan to high it cools right down. Turn them off and it goes back up.
The overflow tank is full of coolant but running the car for a drive and then shutting it off does not suck cooland level in overflow tank does not go up or down, No lever change. I have done this 3 times with no change. Both electric cooling fans on the radiator are running when the car is running. No leaks found anywhere.
What makes this problem better or worse?
Turning on cabin heater to full high and fan high cools the engine right down making it better.
How long has your 2014 Volkswagen Eos had this problem?
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