Two problems related to wiring have been reported for the 2012 Volkswagen Passat. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2012 Volkswagen Passat based on all problems reported for the 2012 Passat.
Battery ground cable is marked red instead of black. The new battery was hooked up with the red to the positive battery terminal and blew the main fuse and ruined the amplifier to the sound system. The battery was stationary in sears roebuck shop as the battery was being replaced by a mechanic. The car is still in the shop so I have no pictures as yet. This could produce serious physical damage if the battery should blow up because of this wiring. Reported to vw on January 20, 2017.
The contact owns a 2012 Volkswagen Passat. After the vehicle was serviced under a recall, it began to hesitate and the epc warning light illuminated intermittently. The vehicle was taken to a dealer where it was diagnosed that the wiring and harness needed to be repaired. The vehicle was not repaired. The manufacturer was not notified of the failure. The failure mileage and recall details were unknown.