Mercedes-Benz S430 Problem Report
Mercedes-Benz S430 Poor AC performance Due to Evaporator Temperature Sensor Failure
The evaporator temperature sensor can fail, causing the AC compressor not to cycle. If the AC compressor does not turn on, the AC system will not blow cold air. If the compressor is stuck on, the air will be very cold at first, before warming up.
Fixed my AC for $3000 a year ago. Now I have similar problem again. - Visitor
The fan blows perfectly but not blowing cold air. Freon is full, All fuses and relays are ok. I am thinking of putting a direct switch to the compressor since passing direct voltage to it works - Visitor
the fan blows but not cold. the computer has an error ec message - Visitor
air conditioning works only sometimes. Had unit fully charged. Air only worked sometimes. Brought to Mercedes dealer. Found faults in system. Dealer corrected them. Picked up car after Mercedes said it worked fine. Next day air did not work. What to do ?. Now there telling me it might need an air conditioning control modual. Now I have to drive another hour and 15 minutes to my Mercedes dealer in Hartford Ct. Not happy that this wasn't corrected the first time I brought the car in for repair. Thought Mercedes dealers were better than that. - Albert S
The crankshaft position sensor may fail. Symptoms of this are: The engine will crank—but...
When the temperature reaches above 100 degrees the air conditioner does not cool at all.
The air stopped cooling but still blowed OK...no cool air. I was told that the expansion valve...
Using remote the locks work fine until outside temperatures get cold.
My AC stopped cooling but the blower works fine. I was told that the expansion valve was defect...