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Thread: High beam trouble

  1. #1
    Join Date
    Oct 2019
    Location
    El Paso
    Posts
    22
    My Cars
    2002 E39 540I 2

    High beam trouble

    Hello together,

    My high beams (both of them) are not working, the bulbs are OK (checked with multimeter), no blue light for high beam in the das board
    Any suggestion where to look for?

    Best regards

    Klaus20191023_200801-1209x1209.jpg

  2. #2
    Join Date
    Oct 2016
    Location
    Shoreview MN
    Posts
    977
    My Cars
    Had a 1991 BMW 850

    Relay

    On my BMW 850 it was the High Beam Relay being bad. I pulled it apart and resoldered the joints and it worked. No idea if this will work on an E39

    Dimmer/high beam switch on column is another suspect

  3. #3
    Join Date
    Oct 2019
    Location
    El Paso
    Posts
    22
    My Cars
    2002 E39 540I 2
    Hello together,

    I checked the bulbs, they are Ok
    I chenged the switch on the steering column, still no success, both high beam lamps are not working and the blue light in the cluster is not showing
    Fuses are also OK
    All other lights are working (turn signal low beam, fog lights)
    Any ideas?

    Klaus

    Best regards

    Klaus

  4. #4
    Join Date
    Apr 2007
    Location
    NNJ/NYC
    Posts
    1,648
    My Cars
    1997 528i/5, 1997 528i/5
    Quote Originally Posted by Strubbi View Post
    Hello together,

    I checked the bulbs, they are Ok
    I chenged the switch on the steering column, still no success, both high beam lamps are not working and the blue light in the cluster is not showing
    Fuses are also OK
    All other lights are working (turn signal low beam, fog lights)
    Any ideas?

    Klaus

    Best regards

    Klaus
    Hi Klaus,

    Have you had your LKM read? The Light Control Module should be saving faults if the high beams aren't igniting. You car is later so it should have an LCM-III or LCM-III B.
    Wade

  5. #5
    Join Date
    Oct 2019
    Location
    El Paso
    Posts
    22
    My Cars
    2002 E39 540I 2
    Hello togther,

    After I removed the lights a couple of times to change some parts the high beam is working
    Why, I still don't know
    so it's not the switch, the bulbs or the LCM
    I checked the groundbox, which is next to the oil filter, which looked like new
    The problem is, it works, sometimes it doesn't, but why?
    Any sugestions?

    Klaus

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