Question about 2003 Mercedes-Benz C-Class

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A/c was still working regardless of whether switch was on or not. Now A/c not working at all. It has been re gassed. Do I need to change the entire switch unit or is it something an auto electrician could fix?

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Don't resort to just switching things until all other alternatives tried.
You can easily check the clutch operation with a manual shunt.
That would also give you a temporary fix if wired to an internal switch.
This can also verify everything else is working, such as pump, evaporator, etc.
Check fuses, temp sensor with ohmmeter, etc.

Posted on Mar 12, 2011


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