• Welcome to ozAudi.com If this is your first visit, be sure to check out the Forums Rules by clicking the hyperlink.

    Note that you are required to register before you can post.

    If you experience a problem logging in, drop me an email to admin@ozAudi.com and I'll sort it out for you.

    To start viewing messages, select the forum that you want to visit from the selection below.

Intermittent aircon blower in Q7

Q

Qldq7

New member
Just recently the blower fan in my 2008 Q7 has been playing up. Usually it will operate at start up but after a couple of minutes the air stops blowing. It will start blowing again, with cooling air after maybe 10 minutes, but stops again after about 2 minutes. It cycles like this on and off.
At first I thought this might be a temperature sensor, so I replaced that (behind the glove box) but that has made no difference. I did compare the resistance of the new sensor vs old sensor and they were the same, with both showing reducing resistance as the sensor was warmed.
I have noticed that this issue occurs more in hot weather (unfortunately) approx 27° or more. Below about 22° it does operate more consistently.
Has anyone experienced this before, and what was the cause and fix?
Thanks.
 
Sort by date Sort by votes
Qldq7 said:
Just recently the blower fan in my 2008 Q7 has been playing up. Usually it will operate at start up but after a couple of minutes the air stops blowing. It will start blowing again, with cooling air after maybe 10 minutes, but stops again after about 2 minutes. It cycles like this on and off.
At first I thought this might be a temperature sensor, so I replaced that (behind the glove box) but that has made no difference. I did compare the resistance of the new sensor vs old sensor and they were the same, with both showing reducing resistance as the sensor was warmed.
I have noticed that this issue occurs more in hot weather (unfortunately) approx 27° or more. Below about 22° it does operate more consistently.
Has anyone experienced this before, and what was the cause and fix?
Thanks.
Click to expand...
How did you go with getting it fixed? I have the same problem. I initially replaced the original blower fan with a second hand one from a wrecker and it worked fine - for a time - until it has now completely stopped. I can get the fan to run intermittently but as soon as I install it its a no go. I ran a multimeter over the resistor module and according to a you tube I found it indicated it was the problem. I bought a new one off ebay (probably non-genuine) and installed it but the same problem. Maybe I need a new fan and resistor? I'm not an auto electrician so I don't know if a problem in one part causes the other to behave as having a problem as well.... Would be good if there was some definitive diagnosis available but sifting through hours of you-tubes, Chat-GPT enquiries doesn't seem to really pinpoint the problems and fixes.
 
Upvote 0 Downvote
You must log in or register to reply here.

ozAudi Sponsors

Ad
Back
Top