2001 Mercedes c230 a/c off light won't turn off - Mercedes-Benz Forum

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post #1 of 3 (permalink) Old 09-01-2011, 11:01 AM Thread Starter
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2001 Mercedes c230 a/c off light won't turn off

My a/c compressor will not engage and the AC off light will not turn off if I try to switch it off.
I recharged the system, but could not get the compressor to engage so I cannot complete the recharge.

Could it be that the AC off light is locked on for some reason.
Is there an over ride to reset this so I finish charging the system
and check for leaks?


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post #2 of 3 (permalink) Old 10-03-2011, 03:31 PM
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Hey did you ever figure out how to reset your AC? I've got the same problem and would like to hear back from you on how you fixed it.
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post #3 of 3 (permalink) Old 10-04-2011, 05:43 PM
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Had this happen on out 2005 sl600. Evap Temp sensor caused a momentary fault. This caused the system to lock out.

Some have said that if you hold the defrost and recirculate button for a few seconds. The buttons will flash and reset the ac system.

This did not work on our r230 and we needed to to use a Star tool to reset the ac code.

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