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2001 c240
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49 Posts
Discussion Starter #1
Well the other day i was driving and all of a sudden i had a check engine light so i got it checked and i had a mis fire long story short after the missfire happend my ec/rest on my ac control unit turned on and is staying on. no matter what i do i cant turn it off, i had the battery disconnected for a couple days and nothing still on.
anyone know what this could be and how to fix it........ any help would be great..
 

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2002 ML320
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1,951 Posts
That means that the compressor is not turning on for some reason... usually when it's low on R-134a it will do this... time to have it checked
 

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2002 C320; 17" AMG 5-split-spoke wheels with Michelin PS2 tires
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111 Posts
I had the same problem with the EC light staying on. The compressor won't turn on. Usually a recharge of your R-134 is all it takes unless there's a problem with the compressor its self (hopefully not...that's what I had).
 
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