Help ... A/C Blower is not working properly

[Boegab]

Guys, I have a strange issue with the A/C blower, when starting the car, the AC works fine and keeps working for around 20 minutes, then the air stops (you can still feel the cold air) . When I press the “MAX” button, everything returns back to normal and the cold air comes back. The rear blower is working great.

I read many posts related to the FSR and therefore changed it (based on the instructions found on this site) but the problem still there. I also checked the fuse but the problem is still there. The mechanics said that the cause is the A/C blower motor (it gets heated) and it should be changed, however, I don’t think this is accurate because the blower starts working upon pressing the “MAX” button. He quoted me around $ 500 labor and around $600 for the blower.


Do you think the issue is with the blower or there is another component that causes this. I appreciate any feedback/ advice you can provide.
My car is X5 2002 4.4i

[Zulu95]

Search: FSR

[Boegab]

Originally Posted by Zulu95

Search: FSR

Thanks ZULU95 for your reply, but as I mentioned that I already replaced the FSR but the problem still there. Any other ideas please ...

[Zulu95]

Could be the motor. Others here have had to change them but usually then it is go/no go situation. Your symptoms sound (from afar) like a defective FSR. Was your replacement of the "new" type and not another "old" type?

[Boegab]

yes, i replaced it with a new one. I noticed that the two are identical (the old was already replaced with the new type) How can you tell if the new FSR is defective, any test procedure?