For D1S bulbs. If your HID lights are shutting off randomly and your bulbs are in good shape, the ballasts might be the problem. This stock replacement ballast for your Mk6 GTI or Tiguan will restore the functionality of your headlights.
This will fit on the left or the right sideVolkswagen Golf R All All
Volkswagen Golf VI All All
Volkswagen Jetta VI Sportwagen All
Volkswagen Tiguan 1 All 2.0T