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View Full Version : HID Headlamps Strobing



Crozzy
08-12-2024, 09:03 PM
Hello all,

I've recently purchased an S4 (private sale) and have found that both the headlights start strobing rapidly after driving around. If I park up and turn the car off then on again they go back to working fine for a short while.

I understand this is likely to be a ballast or bulb issue, but as it's happening in both headlights simultaneously I wonder if there may be something else that may be the cause.

As I don't know the full history of the car due to it having a few previous owners it may just be that only one had the problem initially and now both do, but I thought I'd ask before replacing the parts as they're obviously not a cheap bit a kit.

Any thoughts would be appreciated.

Video showing the issue:
https://youtu.be/UyURT1NhWgE

Crozzy
08-13-2024, 10:52 PM
Found the issue.. pulled the bulbs to check them and someone had installed some cheap aftermarket leds that are likely failing. Ordering some proper xenon replacements.

/thread

LYKUNO
08-14-2024, 05:46 AM
Thanks for providing update! It's always good to hear exactly what the solution was to any problem. Enjoy your S4!