one of my headlights doesn't work on my s3
got some new bulbs today because i thought one of mine was gone. however when i came to change them the new one didn't work. so i put the bulb i thought had blown in the other headlight and it worked. is seperate fuses on each headlight circuit. im confused as to what it could be??
Defo worth the wait :)
Could be the ballast, the power unit that is used to light the xenon.
They can go faulty and are a known fault.
Have you had it on VAGCOM, if not, it might be worth getting it on there...
Yep could be the ballast - if you switch headlights on, wait 10-15 seconds after bulb warning indicator comes up on DIS and then switch off and on again immediately it may well come on (as some charge stored up i think which is enough to ignite the xenon). If this is the case then prob the ballast at fault.
I have a spare unit going as have same fault and bought a pair of aftermarket ballasts off forum member Ibzzz here. Let me know if that turns out to be it and you want it.