Poor AC performance Due to Evaporator Temperature Sensor Failure on Mercedes-Benz C230

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: 100,000 (100,000–100,000)
4 model years affected: 1997, 1998, 1999, 2000 more
5 people reported this problem
1 person shared problem details
The A/C would not cycle on. After taking it to a shop they replaced a variety of pressure switches and other components, only to have the system fail two days later. I took it to a different mechanic and they quickly diagnosed the issue as a faulty temperature sensor - a relatively inexpensive fix.
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