climate control problem...warm air passenger side

My 2001 BMW X5 is blowing chilled air from the two vents on the driver side and warmer air from the passenger side vents. The dual climate contol settings are both at 60F. Dealer cannot figure out why. Can you guys please help. Thanks

Just check theA\c gas and also check heater valve forA\C.

I have the same issue. Where is the cabin filter?

ok your r134a level is low is see this alot take it in and have it evaced and recharged and it will work fine 95% of the time there will be no leak found it sound strange but this will fix it almost every time as long as everything eles is working. the cabin air filter is under the hood up by the cowel look for 3 black lock tabs and there will be a flat white crartrige filter inside.

Faulty water valve