Headlight Trouble

[chrissoto312]

Let me take a look at the gearing from the link to the thread that you gave me. Maybe I can see something going on there....

[TerminatorX5]

Originally Posted by X5SND

Can the adaptive start-up procedure be done without starting the car....by turning the key to pos 2?

Reason I ask, (RB also asked this earlier but seems to have been missed) is if you can hear any growling (or something like gears getting stuck) coming from the front.

Try this:

Roll down drivers window, get out & close door.
Standing outside the X, turn the key to pos 2 (the position the key returns to after cranking), and then listen carefully to the sound the lights make. You should be able to hear the motors when they move (a slight hum). It also helps to turn off the HVAC and radio as well....of course if you HAVE to start the truck this isn't going to work. But, any growling usually indicates either the motor is toast or something is getting hung up/jammed.

the headlights go through POST (power on self test) regardless of the lights on or off, upon the key in pos 2... to repeat the POST, the car needs to be turned off for at least 15 seconds, then POST repeats again with key in pos 2.

[X5SND]

Originally Posted by TerminatorX5

the headlights go through POST (power on self test) regardless of the lights on or off, upon the key in pos 2... to repeat the POST, the car needs to be turned off for at least 15 seconds, then POST repeats again with key in pos 2.

I figured that would be the case, as that test I mentioned works on mine in pos 2. Can I just say that while adaptive lights are neat....it's silly things like this that make me glad I don't have them.

[TerminatorX5]

Originally Posted by X5SND

Interesting.....

Initially I was going to say motor issue, because it look like it doesn't "know" where its going....but yet it centers itself on the next key cycle right? I don't have that much experience when it comes to these kinds of motors---T, is it possible that the motor can tell where it's start/end points are, but gets confused anywhere in between?

this thread is moving in waves - no posts and then everyone start to type at the same time, so i have to go back several times to get the whole picture of what is being said...
the light assemblies have a sensor that indicates position of the pivoting projector in relation to the stationary housing, the AHL is being programmed to recognize that location as "zero" at the end of the assembly line (i guess when the car is being calibrated for the wholesale delivery to a dealer) and not entire physical range of the headlight is being used for the entire motion of the projector...

so, yes, the system knows where the starting point is - that brings us to GT1 tool... GT1 supposedly is capable of testing each projector individually... I don't think Chris has a GT1 laying aroung his garage...

[chrissoto312]

Ok, I can see gears, but they all look like they're in proper position.

And sadly, no, I don't have a GT1 laying around....

[chrissoto312]

Ugh, this is very frustrating when you have to do this (physically) by yourself....

[X5SND]

Any progress?

[chrissoto312]

Originally Posted by X5SND

Any progress?

Nope, none yet.

[TerminatorX5]

i am at work, and only have phone access to the site... if the gears are good (tell us how you saw the gears, you pulled the light out?), then we need to swap signals, to follow the problem. can someone help chris with glove compartment removal? i cant search site on the phone to post instructions...

[X5SND]

Open glove box, 4 Phillips screws up top. Use straight screw driver to pop out pin for damper, push side of glovebox in to open further. Two more screws are towards the back front corners. Then underneath there are two twist plugs, just turn 90*. Should wiggle out after that....don't forget the wires for the glovebox light and flashlight terminal.

....I've had it out a few times. :p