Chrysler says that the air conditioning systems on some 2011 Jeep Wrangler models may cease to operate.
According to the company, the problem usually afflicts vehicles built between Jan. 4, 2011 and Jan. 7, 2011, and may be the result of a low refrigerant charge.
Large scratches on the compressor shaft, near the seal area, is what causes the refrigerant to escape. Replacing the compressor with a new unit, part # 55111401AF, is the only reliable fix.
To make a proper diagnosis, locate the serial number on the back of the a/c compressor.
If the serial number begins with "010," it's one of the compressors that Chrysler has identified as having damage to the shaft. Go ahead and replace the compressor with the new unit.
If the serial number doesn't begin with 010, troubleshoot further until the cause of the refrigerant leakage is found.