One problem related to air conditioner has been reported for the 2001 Mercedes Benz C320. The most recently reported issues are listed below.
This has been ongoing for 3 years. I have a Mercedes Benz C320. I have had intermittent air conditioner and heater. My electronic keys have been intermitant. There is a squeaking sound from the suspension. I get malfunction messages when there is no malfunction. My rear-lights have had to be replaced regularly.