If you have a good dealer, then I'm sure they would pick up the bill.
But for the time being... your compressor has obviously had something happen, thus the EC light telling you the compressor is not active.
Retrieve some codes and report them back here....
Turn the the ignition to position 2 (all the way over, but with car off), put both sides on AUTO, set the left side to HI and the passenger side to LO. Press and hold the REST and (front) DEFROST buttons at the same time for about 5 seconds... the system should shut off and read DIa. (for diagnostics). Press the driver's side AUTO button to scroll through the codes, record them as you go.
GOod luck, some people have trouble with this, but I believe I have given you accurate directions on how to get this info from your model.
2006 E350 w/ 155k miles (Daily Driver)
1993 300E 3.2L Sedan w/ close to about 300k miles
2003 E500 Brilliant Silver (Had 217k miles when totalled!)
1989 300E with 289,000 miles (had for <1 yr while in HI)
03 CLK 500 cabrio (Mom's)
2006 C230k (Dad's)
1999 S420 (Mom's/Dad's)
2000 C230k Sport sedans
2001 CLK320 Cabrio (Mom's)
1995 C280 My First Mercedes-Benz... (155k miles. EXCEPTIONAL AUTOMOBILE. Was Very hard to let go of!)