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Enzo955
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Pkscheldt Member

Pkscheldt

Posted
Posted

It is one or more of the MANY servo motors you have in your HVAC system under the dash beginning to fail. These servo motors are opening and closing flaps that are routing AC or Heat. They fail after time. When they do certain vents stop blowing heat/air. Google: diy servo motor dash cayenne

 

Cheers!

hahnmgh63 Member

hahnmgh63

Posted
Posted

I agree. If you do a Durametric scan of the HVAC system you should see a code for which Servo or Servos that are failing. If you do the work or pay someone, since the labor isn't cheap do all (3, I believe) since the older ones fail regularly and you don't want to have to tear the under dash apart again. Supposedly they are improved parts but I don't know why my Audi's never have these fail and Porsches have them fail again since the parts look almost identical and the manufacturers are the same.

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