Climate control unit power problem.. help!?
Re: '96 328i
Recently, just in time for the hot season, my climate control unit developed a power problem. It shuts off for periods of time, then suddenly pops on again. But at least half the time, power's off.. fan, lights, everything.
Two years ago, I had a new blower motor & resistor installed, those should still be fine. Sometimes, I hear a knock or click which seems to come from the fuse/relay box in the engine compartment, just prior to the power popping on again. A local mechanic here pulled the unit last week & cleaned the contacts, they seemed a little dirty. We were hopeful, but the problem persists. He guessed it might need a whole new climate control module.. which I assume would be quite expensive. Would such a power/connection problem really be due to a bad control module? What other possibilies are there? Could the problem be a faulty relay?