Question about 2001 Audi A4
We have the same exact situation. I even changed the outside temp sensor twice, too, but like you, no luck.
The mechanic who normally is good at solving problems have not been able to figure out the cause either. It's getting warm in the area I live. I hope someone posts some ideas here, soon.
It sounds a lot like the control module isn't seeing the ambient temp signal. I don't think that the outside temperature sender would be the problem though...There should be a cabin temp sender that tells the a/c when to come on, otherwise if it relied on outside temp, it would never turn off. Till you find the real problem, you could temporarily add a toggle and fuse to the compressor itself, perhaps through the high and low pressure cut--off switches, to operate the a/c manually. Without actually being there to do hands-on testing, that's the best I can do for you. I really wish that they would standardize some of this stuff...I have lots of general mechanical experience as well as A/c, but not specific to Audi. Good luck with it and hope someone with experience on your system can help you out with that!
Posted on Jun 27, 2009
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Posted on Jan 02, 2017
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