kyubum

Hi everyone,

I have a strange problem that I hope you all can help me with. I have a 2007, Q7 4.2L and the front HVAC blower will not stop blowing even when the engine is turned off. I have checked for codes and there are none. The only way to stop it is to disconnect the blower motor. If anyone has any suggestions that would be great.

smith2010Q7

1ST for any problem have to run a computer scan. It will tell us a good area to start with.
Now for blowers it not to hard to trouble shoot; possible areas
Fuse
control module
or blower.

attach talks about the J126 blower control module; but please scan 1st parts can be expensive to replace if it was not the correct problem.

Q7 Fresh Air Blower Control Mod J126.pdf

Hope this helps

dukesean

Same thing happen to our '07 4.2 2 years ago.
It's a bad 7L0 907 521 control module, work too hard with aged blower motor I guess.
We replaced the module first so a/c function back to normal.
Blower motor replaced 2 moths later.
The module is blue colored on left side of blower motor. Very easy to replace.