Hi everyone, back after about 9 years!!
I've recently picked up a 2014 MK7 Golf GTI PP which comes with HID lights.
I keep getting a warning on the dash telling me to check my dipped left headlight.
It seems that there is an intermittent fault as sometimes the light works great and sometimes it doesn’t. When I sit in my driveway and turn the headlights on and off the right one always works and the left works some of the time.
I paid VW £60 to diagnose and they just went off the fault codes and told me it needs a new bulb, to which they quoted me £440 to change!
The exact notes they wrote were ‘Customer complaining that the vehicle is showing warning message left dipped headlight. Sometimes works, sometimes does not. Carried out general fault finding, relevant faults logged B121700, B121715 L13 NS dip beam bulb open circus. Requires bumper removal to replace bulb.’
Does this sound more like a ballast issue and highly unlikely to be the bulb?
I don’t think it's a loose connection as the car will be sitting still and turning the lights off and on gives mixed results.
As VW have said it’s a bulb and not the ballast, the warranty company wont pay for the repair.
Would the most sensible thing to do at the moment be to personally swap the bulb with the other headlight?
Any advice would be great, thank you!