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      10-21-2012, 09:45 PM   #1
TX135i
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Headlights shake when hitting a bump

Is that normal? The beams just seem to shake or jiggle just a bit when I hit bumps in the road. Was wondering if it was on purpose to keep them from breaking. Any idea?
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      10-21-2012, 10:12 PM   #2
awns729
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I think I've noticed this too. So it's probably normal.
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      10-21-2012, 10:39 PM   #3
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It's normal. Mine does it too. It's due to the active headlights, because they swivel when you turn, there is a little movement when they take a jolt. Or at leas this is what I was told when I asked about it.
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      10-22-2012, 02:44 AM   #4
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It's probobly partly because of the auto leveling feature as well. Sense xenons make such a crisp light line on the car in front of them sometimes you can see when they are slightly readjusting up and down to bumps or dips in the road or u hitting the breaks. It's a series of slight notches up an down and if you look hard enuf u will notice it. Not sayin that this is the reason for what u c but could be part of it.
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      10-22-2012, 03:51 AM   #5
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It IS normal. After some miles... they will wiggle less. I think its the sensors being new and tight that causes the sensors to "bind" when new.
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      10-22-2012, 10:54 AM   #6
TX135i
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Thanks guys. I seem to notice it when I hit a "wash board" type of bump, not in gradual dips, so I assumed it was OK (i.e. hoped it was OK). I drove my wife's Acura with Xenons (not adaptive) and saw no movement over the same wash board, so it had me a little concerned.
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      10-22-2012, 10:55 AM   #7
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It's normal but weird that I didn't notice this with my past BMWs that had adaptive xenons
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      10-26-2012, 09:22 PM   #8
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Happens here too, and to speak towards ^; my previous BMWs with adaptive bixenons have all done it to some degree.
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      10-28-2012, 09:35 AM   #9
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Try going over bumps with coilovers
It's normal. Don't worry too much about it
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