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Originally Posted by higreenx5
The truck has the blinking light on the headlight switch that randomly comes on when using the X at night and the lights set to automatic.
TIA
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I could only get rid of my intermittent blinking Automatic Headlight issue by replacing the control unit (63126939069 at Realoem) on driver's side. After installing I sealed it so water cannot drop directly into the control unit. BMW assumes that extra sealing is not needed if the light bulb access ports are sealed. Hot steam from a leaky radiator fill tank or forgotten cap will encroach, condense, and short out controller--63126939069 over time.
The Xenon ballast (63126907488) is sealed differently and does not allow H2O to enter its electronics.
Quote:
Originally Posted by higreenx5
The headlights can be moved through the test function to all corners of their range. TIA
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This informs that motors are good
Quote:
Originally Posted by higreenx5
I changed the Switch and tested a known good Controller, one located behind glove box, and nothing changed TIA
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Are you referring to the LCM? If Lights come on, and motors can be controlled externally, the LCM is okay.
Quote:
Originally Posted by higreenx5
What else has been doneTIA
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Get the control unit for the driver side (if you can afford it, get the passenger one also). You need to remove the bumper (at least partially) to access the modules. These are interchangeable and work on either side. Seal them well.