Thread: No Heat
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Old 11-16-2012, 01:26 AM   #8
Joe the Welder
Registered User
Join Date: Oct 2012
Location: USA
Posts: 5
My Ride: 2002 330xi

With some additional help, I found the problem.

There are two sensors located in the heater box that adjust the voltage signal through the climate control panel and into the heater control valve. One of the sensors was defective and it was sending a signal that the temp in the heater box was high heat at all times.

I had the sensor changed and the problem was solved.
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