Did the A/C compressor blow? Sometimes this could happen on a low mileage car I suppose because it hasn't been driven much and the system has laid dormant for some time. Upon initial start up the compressor doesn't have enough lubrication and there you go. Be sure to do the services properly!! ALL OF THEM...Including the valve adjustment and coolant change and brake change.
ASE CERTIFIED MASTER AUTO TECHNICIAN
LEAD TECHNICIAN FOR 14 BAY FACILITY
MERCEDES SPECIALIST 8 YRS
PARTNER IN MERCEDESSHOP.COM