Climate control panel

Driver's side blows hot air; passenger side cold air - Hyundai ...

www.hyundai-forums.com/.../294097-drivers-side-blows-hot-air%3B-pa...
Jul 29, 2014 - 3 posts - ‎3 authors I soon noticed that the driver's side blows warm air and the passenger side blowscold air as it should. No amount of adjusting the temp control ...

Hot air on driver side vents - Cold on passenger side - Page 3 ...

www.odyclub.com/.../46646-hot-air-driver-side-vents-cold-passenger-si...
May 9, 2012 - 16 posts - ‎10 authors I have a 2009 EXL Odyssey that just is doing the same thing (warm air on drivers side, cold on passenger). I checked freon levels and ...

It may have climate control rather than air con, this might be the caue.... It might be the adjustment needs to be changed...maybe it is just set that way??

Passenger blend door temp accuator motor

Probably the left side air temperature actuator is bad . electric motor that controls opening an closing of temp door in the HVAC case . No the computer doesn't need to be reset .
Temperature Valve Actuator Replacement - Left Side
Removal Procedure
Remove the left instrument panel insulator. Refer to Instrument Panel Insulator Panel Replacement - Left Side in Instrument Panel, Gauges and Console.
Remove the knee bolster. Refer to Knee Bolster Replacement in Instrument Panel, Gauges and Console.

Disconnect the electrical connector from the left air temperature actuator.
Remove the mounting screws from the left air temperature actuator.

Remove the left air temperature actuator.

Touareg passenger side only blowing cold air 2003 3.2 v6 dual climate control

is it low on free-on?

The thermostat adjustment control may need to be replaced. Also check the hose on the back for cracks, clogs, or missing.

you cant adjust it ,this requires the dealers computer to re set it,or a phyiscal control has packed up like a vacumn pipe has split where it pushes onto the valve that controls the flap in the heater unit.

These problems are usually caused by a faulty blend door actuator which controls the position of the air mixing door, and in vehicles with more than one air zone (passenger/driver, front/rear, etc.) there will be a door/actuator for each. These electric blend door actuators are self-calibrating - there is a feedback circuit (wiper type potentiometer) that tells your HVAC control the position of the door. It is not unusual for this potentiometer to wear causing loss of signal at various positions, which then will cause erratic movements of the door (if the circuit fails to open circuit or shorting, the door will default to fully open or closed - i.e. hot or cold air only).

Did you check your coolant level or was it low and you added to it at some point? If so the system my need to be bleed or worst case the thermostat is going bad.