Air Conditioning stuck in "Emergency Off " mode - Mercedes Benz SLK Forum

SLK R170 General Discussion SLK 200, SLK 230K, SLK 320, SLK32 AMG

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#1 Old 01-21-2017
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Air Conditioning stuck in "Emergency Off " mode

Hi everyone, I've moved onto the next job that has stumped me.

I've searched this forum and others and can't find anyone who's had a similar problem to mine.

Basically the auto air con doesn't work. It blows hot no problem, and when set to cold it's just ambient air temp and if car steamed up then doesn't clear as quickly as you'd expect with a/c. I took car to be regassed this week and it was fully tested and The system is fully gassed with no leaks, but the chap suspected it is an electrical problem that is preventing the system turning on.

I've used an Autel 802 scanner to look at the problem and it's just saying Air con emergency off - there are no fault codes.

Does anyone have any ideas as to what this could be - module/control unit/pressure switches? If there are ways to check to eliminate potential causes I'd be happy to try them.

Many thanks in advance.
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