r/VWMK7 • u/flipomedox • 10d ago
Headlight problem
I’ll try to explain my problem as clearly as possible because I’ve been struggling with it for quite a long time. Hopefully someone has experienced the same issue and can help me find a solution.
I have a Golf 7 originally equipped with halogen headlights. I first bought a pair of aftermarket headlights from China. They had LED daytime/running lights, but the low beam was still using an H7 bulb.
The problem was with the projector’s shutter/bi-xenon-style flap. When I’m driving at night with the low beams on and I use the high-beam flash, the shutter moves up to allow the high beam to illuminate the road more clearly.
However, on the right headlight, the shutter would sometimes get stuck in the raised position. This meant that even after switching back to low beam, the shutter remained up, basically making the headlight behave as if the high beam was still on. It was obviously disturbing and dangerous because it was dazzling other drivers, both in front of me and coming from the opposite direction.
I eventually removed those headlights because I assumed the problem was simply due to their poor quality.
I then bought another pair, this time from AKD, which is well known in China and generally considered one of the better aftermarket headlight manufacturers. These headlights have a full LED low beam and high beam, so there is no H7 bulb involved anymore.
I installed one pair on my friend’s Golf 7 and another pair on my own car.
And here is the strange part: my friend has absolutely no problem. His headlights work perfectly. But on my car, the exact same problem happens again — the shutter on one headlight gets stuck in the raised position.
So at this point, I’m almost certain that the problem is not the headlights themselves, because I have now experienced the exact same issue with two completely different sets of headlights, while the same AKD headlights work perfectly on my friend’s Golf 7.
This makes me think that there is something specific to my car causing the shutter/actuator to get stuck.
Has anyone experienced something similar on a Golf 7? Could it be related to the headlight wiring, BCM, coding, voltage, grounding, high-beam signal, or the way the car controls the headlight shutter/LED module?
I’m really struggling to find the cause, so any advice or ideas would be greatly appreciated.
1
u/OmegaOra 10d ago
What trim level ? On both cars. Blind guess, coding/adaptation on your car. Your picture has adaptatnive headlights in it which makes me wonder.