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chicken george Member Since: 05 Dec 2007 Location: N. Yorks Posts: 13292 ![]() ![]() ![]() |
my Audi lights used to do a little up down self check dance when first turned on, the best way to notice this is either to get someone else to turn them on as you watch or park close to a wall At work |
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Paul Member Since: 10 Feb 2007 Location: Ghent Posts: 417 ![]() ![]() ![]() |
1)Give three or four fat ladies (sorry, works with fat guys as well...) a lift in the middle of the night. Let all of them jump in the back together and watch your light beam. You'll notice clearly if the adjustion works.
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avtur Member Since: 11 Nov 2006 Location: Stockport Posts: 1306 ![]() ![]() ![]() |
I think I'm right in saying that all xenons have to have auto leveling, along with auto wash too. I'm not sure that the auto leveling works as quickly as you might expect though, it certainly wont react quick enough to iron out the movement of the car over bumps in the road. From what I've been told all xenons do the 'little dance' when first turned on, something to do with calibrating their adjustment (so I'm told)
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Paul Member Since: 10 Feb 2007 Location: Ghent Posts: 417 ![]() ![]() ![]() |
That's both right. Without a certain degree of damping the lights would dance up and down all the time as on bad roads the car level can change faster than the Xenon's adjusting system can handle. Nevertheless, you see them shaking with a quite high frequency often - which is very annoying. Maybe that is not due to the leveling system but a consequence of the bulb suspension. (sorry, I'm not sure about the latter). |
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PJW Member Since: 18 Nov 2007 Location: stafford Posts: 93 ![]() ![]() ![]() |
Thanks all, never thought to check when I first turn them on. Had to change one of the xenon bulbs under warranty and had removed both headlights to check the bulb. Thought I had stopped the auto levelling from working somehow!
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carvalho Member Since: 06 Feb 2007 Location: Figueira da Foz Posts: 54 ![]() ![]() ![]() |
Hi
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avtur Member Since: 11 Nov 2006 Location: Stockport Posts: 1306 ![]() ![]() ![]() |
Don't know how reliable my source is but have been told the bulbs are moved within the headlamp housing. Stornoway Grey GS ... What a fine motor ![]() ![]() Company cars ... a thing of the past - May 2013. |
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PJW Member Since: 18 Nov 2007 Location: stafford Posts: 93 ![]() ![]() ![]() |
Thanks Avtur you may be correct, when I removed the Xenon bulb it had a large base unit connected to it, perhaps the adjustment is in there. Freelander 2 TD4 GS Auto with Winter Pack, Stornaway Grey, Ebony, Grey Mirror Caps. Removable towbar with 13 pin Electrics |
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avtur Member Since: 11 Nov 2006 Location: Stockport Posts: 1306 ![]() ![]() ![]() |
Here's another piece of Xenon information I found recently on a Volvo forum. I asked a question about life expectency of Xenons when used as DRL's (daytime running lights), I was told that the life expectancy is into several thousand hours which apparently is way in excess of normal halogen bulb expectancy.
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