my a/c blows hot air after 5 mins of cold air. the compressor doesnt kick in. After doing diagnostics and found error codes leading to a bad evaporator temparature sensor
when turning a/c on it get cold and then a/c compressor go off then turn the car off and restart a/c come back on.
EC light stays on, vacumned & refilled a/c no fix. Told may be control head or sensor that sits on compressor. Compressor checked ok
Does not come on at all, a/c or defrost. Dont know what sensor that is control head is Auto climate control both sides in dash.
The AC would last only 5 minutes at the beginning of the day then there was no more cold air after. Heat wouldn't stay on either unless you kept it on defrost at which the fan would only run on high. It cost me $300 to fix at a Mercedes specialist shop.
On the way, the air condition went from cold to warm. The pump worked ok. I took to a shop; and the mechanic said the pump was weak, the evaporator was leak. It would cost me over $2,200 for repair.