Test drove a 535i yesterday.
The temp gauge was exactly at the half way mark....idle just above the middle...needle was visually touching the midpoint mark. It was about 50 degrees. Shouldn't it be in between the second quadrant and the mid point while driving? My E30 drove at the quarter range exactly home.
Also the temp circular toggle switch bulbs were out. Do you get to the bulbs via the radio? Door panels were falling apart but I am definitely interested.