Passenger side blows cold air when the heater is on

Hi,

It sounds like you have a couple things happening here. Lets start with the fresh air issue. There is a way to adjust the fresh air/recirculate door. I'm going to provide the directions. Do this first and let me know if it helps.

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2011 Volkswagen CC (357) L4-2.0L Turbo (CBFA)
Fresh Air/Recirculating Air/Back Pressure Door Adjuster
Vehicle Heating and Air Conditioning Air Door Actuator / Motor Service and Repair Removal and Replacement Door Motors Fresh Air/Recirculating Air/Back Pressure Door Adjuster
FRESH AIR/RECIRCULATING AIR/BACK PRESSURE DOOR ADJUSTER
Fresh Air/Recirculating Air/Back Pressure Door Adjuster

Removing

- The Fresh air/recirculating air/back pressure door motor (V425) with fresh air/recirculating air/back pressure door motor position sensor (G644) => [ Air Flow Door Motor V71 with Back Pressure Door Motor Position Sensor G113 ] See: Air Door Actuator / Motor, HVAC > Removal and Replacement > Air Flow Door Motor V71 with Back Pressure Door Motor Position Sensor G113.

- Open the retainers - arrows - on the adjusting lever - 1 -.

Pic 1

- Remove the adjusting lever from the curved washer.

- Remove the curved washer - 2 - from the air intake housing.

Installing

When installing the curved washer, make sure the guide pin for the air flow door adjusting lever is seated in the groove.

- Install the curved washer - 1 - on the air intake housing.

Pic 2

Make sure the guide pin for the recirculation air door adjusting lever is seated in the curved washer groove.

- Mount and latch the recirculation air door adjusting lever.

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Let me know if this helps.

Joe