I just re-read your post and the most important comment I missed. "fan speed didn't change" does it blow at all and can you manually change the speed?

If you can't get the fan to change speed (on auto it will show the speed it should be = mad when demand is much higher than current cabin temp) then it's pointing at the porcupine. It could be a wire that was knocked off but porcupine controls the fan so if the fan speed is wrong then either porcupine is not doing its job or it's not being told what to do (or the blower motor likewise getting no power or broken).


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2011 E70 • N55 (me)
2012 E70 • N63 (wife)