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996 Climate Control Won't Stay Off

  • 1999
  • 911 Carrera
Mileage: 
65 500
Heating and Ventilation
Lewisville, 
Texas

I typically turn off my climate control completely just a few minutes before turning off the car in order to prevent mold/mildew from forming in the system. Despite doing this, the module turns back on in the lowest fan setting when I restart the car. It appears most 996s do not exhibit this behavior and remember their last state of operation such as "Off" or "Auto". I've heard of some '99, '00, and even '01 996s that exhibit behavior just like mine. Is there anything I can do to fix this?

Thanks you.

Douglas Gibbs

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