2000 E39 528i - zenon headlights

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  1. 2000 E39 528i - zenon headlights 
    #1
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    1993bmw's Car Details
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    Year of Manufacture:
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    I have a problem with my zenon headlights. Normally, a few seconds after switching the lights on the beams go up to the correct height. Now after switching on they go up but then they go down again. This results in the dipped beam only being 20 foot in front of the car and the main beam 75 foot. Is this a fault on the automatic beam adjustment and if so whereabouts is this located?.I would point out that this problem only seems to have appeared after driving over a high 'speed bump' at a motorway services.Advice would be appreciated
     
     

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    #2
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    compactM54's Car Details
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    Hello, Sounds like one of the level sensors or its linkages has become broken or detached and the result is the aim does that.
    This site has some great pics of the sensors and their locations, is for an e46 3, but a five should be similar.
     
     

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    its on the rear suspension arm mate, if you get under the car you'll be able to see it.
     
     

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    compactM54's Car Details
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    Quote Originally Posted by Deano16v View Post
    its on the rear suspension arm mate, if you get under the car you'll be able to see it.
    I could be wrong here but looks like sensors on both axles like on the e46 in the site above.

    Bmwfans shows an e39 5's front suspension as having a sensor too.
     
     

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    Deano16v (23-02-2010)

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    fair play, i stand corrected
     
     

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    compactM54 (23-02-2010)

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    Cheers Deano16v, the control box compares the two sensors.
    See here, page 16 for lots of (perhaps too much) info.
     
     

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