Air Conditioning Not Cold on Mercedes-Benz ML350

Problem Description and Possible Solution

AC system leaks and/or a faulty evaporator temperature sensor can cause poor AC cooling. The failed sensor can prevent the AC compressor from coming on. Leaks cause a low refrigerant level, which reduces the ability to cool.

Problem Data
RepairPal Verified
Average mileage: 86,285 (60,000–100,000)
4 model years affected: 2003, 2004, 2005, 2013
11 people reported this problem
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At times when i on the A/C system it will work fine and if i move for about 4km it will stop working and at times it will not stop working by not cooling, only blowing air.
Air condition stop working ,just fan on ????