[Galilee]

2003 Audi A4 avant tdi with dual zone automatic AC.

When adjusting drivers and passenger side to the same temperature one will go full blast cold, the other hot. This happens also when the drivers side control the passenger side temperature, only occasionally do i get the same temperature on both sides.

A possibly linked 'problem':
After switching off the ignition i can hear the servos in the AC working (several different ones).
This can go on for several minutes.

Any ideas?

 

[B19RAK]

I had exactly the same problem 1 hour after buying my car. It sorted itself out the next day. The dealer also ran diagnostics and found nothing. Give it a day or so, might cure itself.
I have the same age car as you.

 

[Galilee]

My problem is, it doesn't sort itself out. I get this issue more and more frequently.

Any ideas on what to check or modify/replace?

 

[B19RAK]

No idea, when you find out let me know as im sure i'll eventually be in the same position.

 

[pbuzz5]

Mine is doing the same thing if you set vent to windscreen it controls both sideswhere you set it hot or cold but if you open the vents or down to feet or auto the passenger side blows cold no matter what temp is set but the drivers side still stays as it was set. The only way to get it back to warm on the passenger side is to only have the windscreen vent open. Any ideas?
Thanks Paul