The climate control system is working well, but I am getting cold air instead of warm air -- with the heat dial turned all the way to the red zone. What would be the correction for this situation? Must be something in the controls area that is not registering the heater setting ?? What do you suggest

__________________
Ben Harrison Carter
1999 Mercedes ML320 87K
1992 Mercedes 300CE 89K
1995 Corvette 29K -- Sold Dec 09
1989 Mercedes 420SEL 99K -- (Sold 4/08)
1968 Mercedes 230S (106K) (Sold 9/06))
1976 Mercedes 450SEL 130K (Just sold - 06)
1961 Mercedes 220Sb (sold years ago)