Flickering headlight

[Kdubski]

The issue resolved itself before I started troubleshooting. Leads me to believe it was a bulb issue. I purchased HELLA bulb equivalent to OEM.


HELLA D2S 4300 K Xenon Standard Bulb, (85V, 35W) https://a.co/d/5mizqHc

[elbert]

It might be the bulbs, but it could be the ballast as well.

I had flickering, which progressively got worse. I replaced a bulb, which stopped the flickering for about a month. I took a look when the flickering returned and found the glass of the bulb was broken into a bunch of pieces (I didn't touch the glass at any time).
I ended up replacing the ballast with a new bulb and the problem hasn't returned since (this was about 15 years ago).

Bulbs were from the dealership, as good aftermarket options were hard to find at the time.

[Slideways]

Mine turned out to be the bulbs, and they were practically new. Bought from from Amazon and I guess they were fake?

Do you have the link to the ones you bought?

Osram Nightbreakers bought from the official Osram vendor store came sealed and the individual bulb serial numbers were verified using Osram's online verification tool - https://www.osram.com/appsj/trust/fr...o?locale=en_US

[E46 M3]

Mine turned out to be the bulbs, and they were practically new. Bought from from Amazon and I guess they were fake?

[6speedS54]

Could be outgoing ballast, I had this similar issue about a year ago, replaced a ballast it went away.

[Slideways]

Check to see if you got a bad bulb by swapping the bulbs side to side.

[Kdubski]

Just replaced headlight bulbs earlier this year (<6months ago). Haven't been driving the car much but just caught this flicker yesterday. Any ideas what it could be? See video:

https://youtube.com/shorts/cz6m3dy7yFc?feature=shared