4.0
definitely annoying- Typical Repair Cost:
 - No data
 - Average Mileage:
 - 68,000 miles
 - Total Complaints:
 - 1 complaints
 
Most common solutions:
- replaced diverter control valve (1 reports)
 
This problem may be covered under warranty. Ask your Mercedes-Benz dealer.

The car has four independant climate control zones. The left rear zone would only blow hot air when the A/C was on. After finially convincing the dealer that there was actually a problem; they replaced the appropriate diverter valve controler within one day.
- Jeremy W., Bakersfield, CA, US