Hi all, My daughter's 2011 Mercedes Benz C300 4matic (w/90K) air conditioner stopped working a few days ago during a heatwave. I checked the R134 charge and the charge is fine. I cannot see if the clutch is engaging because it's internal. I assumed that the compressor was bad so I decided to take it to my local mechanic for an estimate. He will diagnose it today but said he rarely sees a bad compressor on that model but rather one of two sensors (AC Refrigerant Pressure Switch or AC Evaporator Temperature Switch) is probably bad. If that's the case I might change myself if it's not too difficult. Does anyone have instructions or know of a resource on how to replace the two sensors? I know one is under the condenser and the other is near the evaporator in the dash. Thanks in advance! Bob K _______________________________________ http://www.okiebenz.com
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