Hi,

From what I have gathered, the center vent does not blow heated air. If you look at the manual, it says center vent will blow fresh/cold air. So it should be normal and well within specs. Make sure the fresh air flap is closed in cold weather or you will freeze.

Thanks and hope it helps.

__________________
1992 200E
M102
102.963
AKA Silver Old Grumpy
Always hope I can freeze someone with the aircon- Just change the compressor again, Subseal leaked with a psssssssss sound.
Its the NON-3 Pointed star items on my car that cost more to repair.$%^&%%*^&