[Levvo001]

Vehicle: Master III 2017, platform for Adria motorhome

Driving recently on a cold day with a side wind, I noticed my right leg was getting very cold. I could feel cold air coming through the speaker grille in the door panel. The heater couldn't overcome this cold, probably because as this is vehicle has a motorhome body, it's trying to heat an enormous area, much more than if it were just a van cab.

I can't see, however, where this air is getting into the door. There are no slats or grilles in the metalwork, unlike those I have seen on some other vehicles. Any clues? Any ideas how to reduce this? I don't want to eliminate it completely because presumably some ventilation is needed to avoid condensation.

Thanks

 

[Dancingdad]

The seals around the windows aren't airtight plus there will be bottom drains.
Usually on a door...behind the doorcard is a polythene sheet, sealed to the door metal and covering all the holes....check that is intact.