I experienced a strange issue with my A/C tonight. The passenger side vents started to blow hot air while the driver side was blowing cold air. No adjustment to the mode or temp controls affected the heating. This persisted until I got to my garage. I turned the car off, waited for all of the lights to go out and then restarted the car. The passenger vents now were blowing cold air and were functioning normally. I didn't see any messages on the panel. Anyone experienced this? The climate control had been functioning flawlessly until this glitch. I talked to MB Customer Care who told me that the unit will self check and recalibrate itself when the car is turned on, so it apparently corrected itself. Weird.

 

Pretty much everything computerized. Thanks for sharing, now I know what the deal is if it shows up.