Poor AC performance Due to Evaporator Temperature Sensor Failure on Mercedes-Benz E320

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.

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Average mileage: 154,764 (84,000–250,000)
7 model years affected: 1996, 1997, 1998, 1999, more2000, 2001, 2002
21 people reported this problem
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Viewing 1 - 7 of 7 problem details
1999 Mercedes-Benz E320 100,700 mi,
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
1997 Mercedes-Benz E320 187,234 mi,
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.
2002 Mercedes-Benz E320 200,000 mi,
ac clutch is not working
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.
1999 Mercedes-Benz E320 123,000 mi,
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.
2000 Mercedes-Benz E320 167,000 mi,
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.
Just replaced this year.