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  1. General E46 Forum
    Hello, I've been having strange behavior from my AC lately. Hot air only from floor and defrost vents no matter what I manually set the AC and dash thumb wheel to. I've been reading about that a lot and I wanted to try to scan the IHKA system for errors and get some readings before I tried...
  2. General E46 Forum
    :excited:My mechanic scanned my car and found an error stored in the environmental control (IHKA) that says something to the effect of "hot water valve shorted to B+". I am having an intermittent problem with the valve blowing hot water through the heater core and overriding the AC. This comes...
  3. General E46 Forum
    Ok, so a week ago my Climate Control IHKA goes dead; no lights, no power, nothing. Fuse 28 was blown so I replaced it, then it blew again, replaced it, blew again, etc etc etc. I did some research and figured out that it is either a faulty climate control unit or a bad Final Stage Resister...
1-3 of 3 Results