Apologies if this has been answered already. I did search extensively and realized that the A/C and vevtilation system can be a problem with MB's.
I purchased an older ML430 and liked it so much I then purchased a newer 2003 ML350.

It's brilliant, love them both.

The only problem is the rear air on the ML350 blows cold air out - contantly freezing my son in this cold MN weather !!!!
The air is hot at the front but air at the back (center vent or feet) is cold.

Is there a solution to this? Other than my current one of turning off the rear air.

Any input and help would be very much appreciated - especially from my son )

Cheers,
Mike