koojo

I have the bixenons and I always thought they were aimed way too low when I got it. I used to retrofit headlights, so I used the rule of thumb of parking 25 feet away and making sure the lowest part of the beam cutoff is 2 inches below the level of the headlight. In my case, the hid peojector is approximately 31 inches above the ground (may be different depending tires/wheel diameter), so at 25 feet from a wall, the lowest part of the beam should be at 29" above the ground on both sides. However, before adjustment they were around 27". I brought both sides up to 29" and I can see much farther without blinding oncoming traffic.

This sets the baseline off of which the "self-leveling" mechanism works.

MBRedux

Did you remember to deactivate the auto leveling motor before you adjusted the lights?

koojo

Nope, didn't know I had to. Oh well, they still work fine.

mr.mbenz

darn...wish I could do this with factory bi-xenons.... it does seem a bit lower.
The C Klasse looks really sharp like a "diamond" shining out.
With the GLK's can't seem understand why it does not look "wow"?
Any easy tip to make these adjustments?

koojo

You can do it on factory bixenons, that's what I have. You need an allen wrench to adjust them. There is hole above each headlight that you can see when you pop your hood.

togaclk55

It's easy to adjust

mr.mbenz

koojo,

thanks for the update. I noticed when i used the horn, the light aimed up to where when I first got the GLK.
I tried again on the highway (open road) and what a difference it made!

When you make the adjustment, is it permanent or do you have to keep resetting it?
I do not know if the dealer adjusted these or they adjust themselves...but the range of view is much less than when first driving for a month or so ...

koojo

Adjusting the headlights will find a base level off if which the self-leveling mechanism can work off of. The base level does not change unless you physically pop the hood and use an allen wrench to adjust them to a new base level.

shotgun_banjo

i need to adjust mine as well as it was a pita driving to whistler with the lights really low and i have to constantly pull the level to high-beam to see where i am going to. do i need the dealer adjust this or can i just do it mysel without messing the autolevel feature of the headlights?

rmfnla

Using the horn affects the headlights..?

mr.mbenz

sounds crazy...but yes...when you honk while driving and if you got the bi-xenon that have the adaptive technology, the lights in fact bounce up another 50-100 yards from original position.
Gotta try it to believe it. Do it on a dark road and see the difference.
This is the level of adjustment I need to make but yet to know how I can do so, perfectly?

shotgun_banjo

hmmm.....I'll try this tonight and see if that works....I am not a honk person just a finger and yell person.

mr.mbenz

was at the dealer today and had the MB advisor stand about 25 feet in front of the GLK and I honked...and even he could not believe it either.

newyorktoLA

That's so cool! I have to try that with my S haha