What can suddenly cause my air conditioning to stop cooling? on 2007 Mercedes-Benz ML350 4MATIC

I drove my car out for a meeting in perfectly good condition. After the meeting, I started the car and the Air conditioning came on as fan but the compressor to cause cooling did not come on.

by in Garnet Valley, PA on March 19, 2013
1 answer
ANSWER by , March 19, 2013
seek diag from good a/c tech