993C4Smontreal

I just noticed that when I turn the AC on, I get cold air from the vent on the left side (drivers side), and hot air from the middle vents and right side (passenger side). Any thoughts?

ToreB

Your right side mixing flap servo has probably given up the ghost, stuck in the open position. These two servos control the heated air flow on each side of the dashboard.
Check mixer flaps operation by turning the CCU temperature **** to maximum and minimum. Both mixer valves should simultaneous open and close accordingly. The servo/valve assemblies are placed in the foot wells, behind the carpet walls. You can also use a Porsche compatible OBD tool to read out any fault codes.
Cheers,
Tore

IXLR8

By the way, Tore, will your T-OBD reader read those codes as well or would a Porsche Hammer or Durametric (both ultra expensive) be needed to do so?

993C4Smontreal

Thanks to the help of Alex and Tore, my problem has been fixed. Saved hundreds of dollars and Got that "Feel good" moment from a DIY....thanks guys!

IXLR8

What ended up being the fix?

Bonster

On the side carpet near the footwell you will see two screws embedded into the carpet. Remove this and you will see a corrugated hose. With that removed, start the car and turn on AC. If you feel a rush of hot air from that area, you might just have a hole in the hose. I always try the easiest to access and cheapest fixes first.

Bonster

Oops. Somehow missed your final post. So it was the servo? I have the.same issue right now. I bet 700 bucks was worth it!!!

ToreB

Alex, Scantool can perfectly both read and clear the CCU fault codes. My T-OBD interface does not limit this in any way. Thanks and cheers,
Tore

993C4Smontreal

I replaced the servo/flapper because the flapper was busted and not opening and closing as it should.