AC finally fixed! New solution from dealer

[NervX5]

No air was blowing at all. Just lots of fan noise. Perhaps just the slightest warm air, but barely noticable. Worked fine every 3rd or 4th day. Thanks to others on this board, I read that shutting off the engine, then restarting sometimes made the AC work. Always fun doing that at a red light.

If you can have the dealer run the same diagnostic they did for me, it would show how many times the fans failed, if any.

Good luck!

[NervX5]

I spoke way too soon! A few days after I got the new computer unit, the same problem happened. Thanks to others on this board who mentioned similar issues, but the REAR AC vents worked, I tried the same test. It appears that it's the FRONT blower. I had to wait 3 weeks again for an appointment with a loaner from my dealer. Just dropped it off yesterday. I told them to keep it until it's fixed.
I got a new Final Stage resistor installed first, no help. Then the new computer (paid the $50.00 charge), no help. I'll post the results when I get it back. Hopefully it will be finally fixed for real, and that info will help others.

[NervX5]

Hopefully this is the final update on my A/C fan blower issue!

After 3 tries, I think they finally may have resolved my similar issue.
My AC has worked off and on since late July, and 3 weeks wait per appointment (with loaner car). They first changed the Final Stage Resistor (no help). Then they replaced the entire computer control unit (no help). It took them 2 days of troubleshooting this time, but I got it back! (works so far!!!) They said there was a "crimped" or "exposed" wire that was grounding itself out every once in a while! Here is the tech sheet:

"Inspect Heating and A.C system functions.
R&R CENTER CONSOLE, R&R IHKA, R&R FINAL STAGE, R&R D/S LOWER DASH PANEL, R&R RADIO, R&R CENTER VENT, R&R GLOVE BOX, TESTED WITH KNOWN GOOD IHKA, TESTED WITH KNOWN GOOD FINAL STAGE, INSPECTED WIRING HARNESS, FOUND SHORT TO GROUND UNDER DASH BEHIND GLOVE BOX. REPAIRED WIRING. RECODED IHKA."

Hope this helps anyone else! What a hassle!!!

Originally Posted by NervX5

I spoke way too soon! A few days after I got the new computer unit, the same problem happened. Thanks to others on this board who mentioned similar issues, but the REAR AC vents worked, I tried the same test. It appears that it's the FRONT blower. I had to wait 3 weeks again for an appointment with a loaner from my dealer. Just dropped it off yesterday. I told them to keep it until it's fixed.
I got a new Final Stage resistor installed first, no help. Then the new computer (paid the $50.00 charge), no help. I'll post the results when I get it back. Hopefully it will be finally fixed for real, and that info will help others.