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2010 987.2 here.

Noticed that the climate controls stopped working. There was a weird smell coming out of the vent.

None of the buttons work except for the fan speed and the windshield defroster (can see the orange light).

Last time I was able to use the temperature control on "auto" it was set to 20c and is now set there. I can toggle the fan speed up until half way.

Heated seats no longer work.

Hoping for some suggestions.

Thanks
 

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I know it’s an old thread, but did I have the same problem. How did you manage to fix it ?
Thanks.
Horatiu
 

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It's been over a year since he's been on here.. so my WAG is you're not getting an answer from him.

Diagnostics would be good - a Porsche specific code tool, so you can see what the car thinks is wrong. First though I'd check ALL the fuses.

If I had to throw a dart at the wall and GUESS at a cause - it might be the HVAC control unit itself. I believe a used one will work provided it's setup for the same options (heated seats, auto-HVAC, etc.) And no - you can't convert from Manual HVAC to the Auto HVAC. Won't work right.
 
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