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11-22-11: Just had my dealer tell me that the Evaporator Temperature Sensor is causing erratic behavior in my a/c. Most critical, windows all fog when it's raining because a/c doesn't turn on.

Can someone please tell me the location of the sensor? I bought it on line, just need to know where it is so I can change it.

Thank you!
 

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Here are a few diagrams of where the Evap Temp Sensor is located.
I am having the problem with my C240 (2002). My windows will fog up when raining. Mostly the side windows. The heater works, but not the AC. Refrigerant level is fine but the compressor does not work. I haven't replaced the Evap Temp Sensor yet. I'm thinking my AC compressor needs to be replaced. Let me know if replacing the sensor fixed the problem. It's a lot cheaper and easier than replacing a compressor. Good Luck! and don't forget to let us know if this resolved your problem.
 

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