Three problems related to trunk wiring have been reported for the 2012 Volkswagen CC. The most recently reported issues are listed below.
Ihave had to replace the trunk wiring harness twice. It rubs on the opening and closing of the trunk and fails. The design should be fixed.
Wiring harness for trunk has pinch point causing the wire insulation and wires to break. This harness has rear lights in the same harness. Had to replace trunk harness, car is 5 years old and has 65000 miles. Latch and door switch stopped working, diagnosis was short in harness. I took old harness from dealer and pulled back cover and found all wires were bare.
Wiring harness on trunk needs replacing. Lights do not work on trunk. Seem to see many others with same issues.