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Old August 16th, 2012, 04:15   #8
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Join Date: Dec 2001
Location: St Louis
Fuel Economy: fantastic

Well, the engine needs to be running on that car to turn the compressor, and the compressor needs to be working to make pressure in order to turn the fans on.

I am looking into how/if you can read refrigerant pressure via the scan tool. VAG went back to a non-electronic HVAC system on the decontented American Jetta to my understanding, so this data may be somewhere else.

You have VCDS, can you access the "climate control" function at all?
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