Hi all, my e53 2003 automatic climate control is stuck, the buttons have no effect. Driver side is stuck at 71deg, pass is 90 deg. Auto is stuck on. The the blower is not running, though it can randomly get stuck on and I have to remove the fuse. I replaced the FSR, but the behavior does not change.
I took off the front plate to see if a button was stuck, but it continues even when all the copper springs are removed.
The incident that set this off was a bad alternator that has been replaced, but the battery did completely drain.
Does this behavior match the bad capacitor symptoms? I can’t find much about those actual symptoms.
Is there any software approach that I should try (via a dealer) befor buying a new (used) unit?
One more q: if I buy a used unit does it need coding to work in my vehicle? Can only a dealer do that, and if not, what equipment would a small shop need to perform the coding?
Thanks!