I had same Issue I thought the door luvers dont shut all the way but took it apart all was good . so I did HVAC check to measure how much freon was in the system and it was low. i measured freon into the system and ended up having to add some and that fixed my issue...Any ideas why the air conditioning on my 2019 835r blows warm air on passengers side and cold on drives side???
Seems strange one side would be cold and the other hot if low on refrigerant.
Wow! Does it have more than one evaporator?