Hello, this is my first post on here, but I'm stuggeling with a 2011 Q7, it wont stay warm inside, and i live in norway, so the winters are quite cold
It have gotten new thermostat, new water pump, new electrical pumps and new divertervalves for the coolant, but i cant seem to find the cause.
heres the problem, I can start it in the morning, in -20c, and it gets warm inside fast, then driving along for 30-40 minuts, then gets cold, no more heat.
but the motor does not overheat ever, does not move over 90c at all.
it then needs to get cold and stay cold for many hours.
then its fine for a new 30-40 minuts.. anyone can help??

thank you