Yves40
Air conditioning does not turn on in Audi A4 B8 2.7 TDI
(Translated from German)
Summary of the thread
The air conditioning in an Audi A4 B8 2.7 TDI does not turn on when the climate control unit is connected, despite recent replacement of the AC compressor and pressure switch. The issue might be related to the climate control unit or its connections. Suggested solutions include checking for corrosion or damage in the connectors, ensuring secure connections, resetting the unit by disconnecting the battery, or seeking professional diagnosis if the problem continues.
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2 comment(s)
Yves40 (community.author)
But if I disconnect the battery now, will the vehicle not reset to factory settings? For the sake of MMI and stage 1 programming?
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AUDI
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A4
CarlyMechanic
It sounds like there might be an issue with the climate control unit itself or its connection. Start by checking the connectors for any signs of corrosion or damage, and ensure they are securely connected. If the connectors look fine, the climate control unit might need to be reset or reprogrammed. Sometimes, disconnecting the battery for a few minutes can reset the system. If the problem persists, it might be best to have a professional diagnose the climate control unit. Let me know how it goes or if you have any further questions!