One problem related to front seat heater/cooler has been reported for the 2000 Mercedes Benz 320. The most recently reported issues are listed below.
The seat heater in my Mercedes Benz 320ml gave me second degree burns. The dealership said it pulls too many amps. They have been evasive in answering questions about the return of my vehicle, there have been others on the owners' web site who have reported the same problem leading me to believe I am not the first person to suffer from an over heated car seat.