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Q: A/C REST LIGHT BLINKING on 2005 Mercedes-Benz E500 4MATIC

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Car was just detailed inside and out...when I picked up the car the A/C Rest light was on and when I pressed it again the light just blinked. There is no A/C and I had great A/C the day before.
No car image 94a1663db56199c5353592009e34aaa51078a2469bed068bb8d6f0ba43accf97
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Possibly the detail shop sprayed something where it should not have been sprayed or they may have bumped the outside ambient temp sensor for the A/C and knocked it loose, which will shut down the system. This can happen in a car wash.
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