The G65 refrigerant pressure switch can develop a leak, venting all of the system refrigerant to the atmosphere and causing the A/C to stop working.
It's likely that all of these have been replaced by now, but if you have a compressor failure in a 2006 contact your local VW dealer to see if the recall might cover you. Some 2006 VWs and Audis received A/C compressors with faulty clutches that would seize up. More information on the B6 Passat's HVAC system can be found in the B6 Self Study Program on pages 66 thorough 69:Īnd in the Touareg Self Study Program on pages 50 through 61:
It communicates over CANBUS with the ECU and a range of sensors to maintain the requested temperature in either one or two zones. The Climatronic system consists of a self-contained controller integrated into the dashboard module. It's a great resource that I thought would be most helpful as a post in the forums, so my slightly edited version follows:Ībout the 2C Climatronic System in the B6 Forum member RichardSEL was kind enough to send me a Word file he has containing a comprehensive list of the readouts available in the Climatronic unit's Diagnostic Mode.
