On my '05 E53 N62, at idle with normal operating temp, I'll have the heat all the way up:
- If I set the fan speed to max, I get cool-ish air
- If I set it somewhere between half and three-quarters, I get very hot air.
I have a new thermostat, aux. water pump works. I don't know what needs to be changed to get normal heat at top speed. Anyone, please?