A/C stopped during drive. Restarted car and worked - Page 2 - Mercedes-Benz Forum
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post #11 of 12 (permalink) Old 07-30-2015, 06:02 AM
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@ps2cho Did you make any progress on this one?
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post #12 of 12 (permalink) Old 07-30-2015, 05:35 PM
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Originally Posted by cbc atl View Post
Mine was doing that earlier this year. Finally decided to tighten the belt.

Went to loosen the front bolt and it was not even finger tight, could turn the washer by hand.

Good thing the bolt on the tensioner was at least a little bit tight.

Anyway, adjusted the tension, tighetned the front bolt and A/C has not cut off again.
Loose tensioner will cause this for sure. Belt slippage is the culprit that causes the KLIMA to drop the compressor signal when the speed sensor "thinks" the compressor has locked up or is close to it. I think he had been chasing a high running temperature problem earlier this summer. Seems like two clues to a slipping belt.
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