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Thread: X3 headlamp fuse?

  1. #1
    Join Date
    Feb 2019
    Location
    Minneapolis MN
    Posts
    2
    My Cars
    2005 BMW X3 3.0i

    X3 headlamp fuse?

    My running lights (the non HID bulb in the HID bulb assembly doesnt work on the right side. The left side is fine. I believe the lights and bulbs are all good since the right light assembly works if I plug it into the left side. So is there a fuse or relay that would control each side individually? It may also control the HID lights but I'm not sure since they're not working (another issue entirely) I've checked the glove box and underhood fuses and nothing remotely related to headlights is blown. Does anyone have a schematic of this? Thanks

  2. #2
    Join Date
    Jan 2005
    Location
    Japan
    Posts
    54,654
    My Cars
    11/88 E32 750iL+98 E36M3
    moved to X3 forum from X geberal
    Shogun tricks and tips for the E32 series are HERE!

  3. #3
    Join Date
    Feb 2019
    Location
    US
    Posts
    6
    My Cars
    2012 X3 35i
    I’ve got the same issue on my 2012


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  4. #4
    Join Date
    Jan 2004
    Location
    (northeast) Indiana
    Posts
    19,321
    My Cars
    15 650ix GC & 14 X5 50i
    No...BMW moved away from individual fuses and relays for the exterior lighting way back in the mid 1990s. It started with the LM (lamp module)...the next iteration was the LCM, then the LCM III & IV. Then when the new generation BMWs started to roll out (e90/e65/e66/e60/e70 - upward)...the control of lighting went to other modules...but BMW still stayed away from simple fuses controlling the external lights.








    A3 = the light module in the e83: https://www.newtis.info/tisv2/a/en/e...dimmer/XJoQ5CS


    Light functions
    The light check control module controls and monitors
    - all external vehicle headlights and lamps both when switched on and switched off (cold and warm monitoring)
    - all switches and buttons for light functions
    - The functions of the dimmer for the instrument lights and locator lights
    Components

    With the exception of the brake light switch, all switches scanned by the LCM are designed such that they switch to ground.

    The following switches are scanned by the LCM:
    - Combined switch for parking light/low beam
    - Turn signal/dip switch
    - Fog light switch
    - Brake light switch
    - Hazard warning push-button
    - Dimmer potentiometer for instrument locator lights

    The LCM receives further information via the I-bus/K-bus.
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    2015 650ix GC (Moonstone/Cohiba Brown) <<~>> 2014 X5 50i (Space Gray/Mocha)

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