C4 AC Blower Failure

Anyone else had AC issues with their 2021 electric C4? Done 77k km. Blower's completely dead. Reckon it's the AUC sensor – probably a dodgy wire or plug. Am I right?

4 comment(s)

I had a similar problem with my C4 – not sure of the year. The blower motor wasn't working, and it turned out to be the AUC sensor, also called cabin air sensor. Before you start replacing parts, have you checked the wiring and connections to the sensor itself? The plug connection could be defective.

Yeah, I had a quick look, but where exactly is the AUC sensor located? I couldn't see it easily. Is it difficult to get to?

It's usually near the air intake for the HVAC system. Honestly, if you're not super comfortable poking around, I'd advise against tearing into it. It might be best to get a mechanic to check it. I took mine in, and it cost 95€ to fix. The mechanic replaced a broken wire.

Appreciate the advice. Sounds like I'm better off letting a pro sort it. Will book it in and hopefully that'll be the end of it.

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