Air Defrost
Why is the heat on my 1999 BMW 323i working?
I just bought the car from a private seller. I’m having a problem with the entire center console. The heat wont turn on nor will any button on the panel work (air, defrost, etc.) When I spoke back to him he mentioned a sensor. I know I need an O2 sensor replacement…Its really cold! HELP!
Nothing turns on; press the buttons and it does nothing. The temp gauge is in the center.
That’s not your O2 sensor(s), which is/are used by the secondary injection system and ECM. A bad sensor will light the “Check Engine” light. It could also prevent you from passing a smog check-maybe.
May I ask a question? Didn’t you check this stuff out before you bought it?
Anyway, you need to provide some more data:
- Do you have a climate control system?
- Is the fan running but it’s not getting warm?
- Does the fan run intermittently?
The CCS module was a high-failure rate item in that year, fortunately you can replace it yourself. It’s remove and replace.
Else, it could be the resistor pack for the fan, a blown fuse/relay or a serious wiring issue in the center console.
If the car is always running cold, THEN I’d worry about the thermostat.
EDIT: IS it a climate control system? In other words there’s digital display that shows the desired temp?
If so, it’s the CCM. You can order a replacement here:
http://www.europeanautoparts.com
or
http://www.bavauto.com
It’s going to run about $300. But it’s very easy to remove the old one, there’s an interface plug, and put the new one in.
But first, get the owner’s manual out and find out which fuse/relay controls the CCM. It might need replacing.
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