I have been out of town for three months and took the cayenne (06 tts w 4 zone climate control) out for a drive today and the ac is not getting cool (cabin fans and controls all seem normal). Checked system pressure, its good. checked s11 fuse also good.

no fault lights... i have a durametric setup but haven't used it yet and have too much going on right now to devote a lot of time to this. I need a/c lol. Any thoughts appreciated.

 

I feel your pain man It gets hot pretty quick in the 955 without A/C too with all that leather mine says the ambient air sensor is faulty how ever it still blows cold, might want to check yours..

 

Its true, should have time to use the durametric on it tomorrow...

 

Car (06 CTTS) was dormant for 3 months when i went out of town for "2 weeks"...



upon return, i charged the battery but have no functioning a/c (4 zone)



I hooked up the durametric today and was given the following;



1592, air quality sensor



565, a/c regulator control module no signal/communication



I ran the self test. it was vague as to any results on the durametric, but all doors and fans appeared to function correctly. I cleared the codes, still no go.



ran through the service manual, running out of time i skipped a little and it basically is telling me that the rear control module may be faulty.



I need part numbers for both (i couldn't find either on pelican or sunset) and is the module a common issue/repairable? what about the a/q sensor?



its too hot to drive the pig without a/c



TIA!

 

The AC system has been broken for at least 7 weeks, and you haven't taken it to the this shop and left it to be diagnosed and/or repaired? I guess the alternative is put the windows down and drive.

 

yes, but i have alternative means of transportation. I normally only use the cayenne for long trips with more than one passenger. I haven't had time to mess with it, and haven't needed it. I have no intention of taking it to anyone...

i did put my tester on the battery today, after a full trickle cycle, it only shows 448 cca so will be getting a new one.

I need to perform the pinout tests in the service manual for the control unit after that.

 

new battery and cleared codes, no change. pinout test is on the agenda for today...

 

I had a similar issue one time with my cayenne. We drove for like an hour hoping it would start to cool down. I was able to get it working again by playing around with the AC controls on both the passenger and driver side. Sorry, I don't remember the exact sequence or know exactly what did the trick. But somehow it started working and I have had zero issues. What I think happened is that somehow the driver and passenger side climate control got out of sync and I was able to eventually reset it - so more of a computer issue than anything else. YMMV. Good luck