Dual climate control not working properly

Does the vehicle have dual zone climate control, where the driver side and passenger side have different control? Sounds like a blend door issue on the driver side. Why did you replace the passenger side, was it blowing hot too when AC was on?

If the driver's blend door actuator has failed completely, or the wiring to it is damaged, you will not hear any clicking. Check for appropriate voltage at the blend door actuator, and determine from there if it's the actuator or the control unit.

Dual climate control. They actuator on the passenger side at the center console is bad or the controller is bad. Have the codes read. One is $30, one is $300+

if this has dual climate controls then the drivers side blend door actuator is not working properly. if it is only single climate control then a low freon level can cause the air on the driver's side to be warmer.

dual climate controls are freon sensitive , be sure
your system is fully charged.

does this vehicle have electronic climate control. if so sometimes the actuators get "stuck" in one position if the settings have not been changed in a while. under the driver's side on the dash toward the center and the passengers towards the center on that side, with dual climate control. sometimes removing the actuators and operating them with them pulled out (if they turn) then replacing will work. hope this helps

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

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

Press and hold down the auto button on your side, it will re sync

Electronics involved !
The climate control seat system is able to heat and cool the front seats. Each climate controlled seat is operated by push-buttons on the dual automatic temperature controller (EATC) located on the instrument panel. Each front seat temperature is then monitored and controlled by the dual climate control seat module (dual CCSM) located underneath the passenger front seat cushion.

Both the driver and front passenger climate controlled seats are independently controlled electronically by the dual climate controlled seat module (CCSM) mounted to the bottom of the passenger seat cushion. The climate controlled seat system only operates with the engine running, however, if using a diagnostic tool to command the dual CCSM, diagnostic testing can be carried out with the ignition switch key ON engine OFF (KOEO). The system receives power from central junction box (CJB) fuse 118 (30A) through circuit 1153 (RD/BK) feeding battery voltage into dual CCSM C3265b pins 1 and 24. If power is disconnected from either pin 1 or 24 of dual CCSM C3265b, only 1 seat will be disabled (pin 1 for driver seat, pin 24 for passenger seat), the other will remain operational. Since both climate controlled seats operate independently, if a fault occurs setting a DTC specific to either climate controlled seat, only the affected seat will be disabled by the module and the other will remain operational.

Sorry , but it would be best for you to take it to the dealer or someother qualified repair shop.