At first, I was pretty certain my heater valve was bad...I get warm air from all vents when I am parked or driving at slower speeds, yet I get colder air when I am on the freeway. However, the past couple days the weather has warmed up a bit (first time since I have owned the car), & I now notice a different issue. I went to turn the temp control knob to the cold side & there was still hot air coming from the vents....the temp control appears to have no affect on the air temps coming out of the heater. Could a bad heater valve cause this issue as well?
My coolant temp appears a bit below what others say is normal...it ranges from just above the blue to about 10:00 or so, maybe it just needs a T-Stat? I will check that in the morning, but since I do in fact get warm air inside I don't think that is the issue (still might be an issue, but maybe a seperate one).
Thanks in advance for any suggestions, just sorting out some small issues on an otherwise solid new-to-me 535is
