Xenon Headlights Adjustment
I am a new member of this forum.
I have recently adquired an e class with avantgarde pack which brings also xenon headlights.
I have constated that the original adjustment is quite low, I mean the reach of the lights, even though is automatic and so, compared with other cars, the headlight doesnt light much.
Does anyone knows if I can manually adjust the headlights, I ve heard in other models that it is just a screw.
I will apreciate any help or direction you can give me.
Does anyone knows if I can manually adjust the headlights, I ve heard in other models that it is just a screw.
I will apreciate any help or direction you can give me.
The brief answer if you have the 211 is 'No'
You have the Avantgarde which comes with bi-xeon headlights.
""""Models with xeon headlamps do not have a thumbwheel. The headlamp range is adjusted automatically."""""
I am very surprised that the lights need adjusting as they are without doubt the best headlights that I have used. My previous E-class just had xeon headlights and they were good.
If you are not satified with there performance ask the dealer to check them out and if you are still not satisfied. Then ask if you could compare them to another Avantgarde.
Good luck,
John
I have been doing some researching through the Forum, and found another thread of which I copy this,
"Re: Xenon range
I adjusted mine according to briar's instructions. The adjustment screws are located next to the ominous high voltage warning stickers just behind the headlights.
quote:
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Originally posted by briar
I had to have my bi-xenon’s adjusted after taking delivery.
They were aimed too low and had limited range. After adjustment it was much better.
The bi-xenon’s do have very sharp focus, so there is not much stray light when using low beam, and limits ability to illuminate un-lit overhead signs.
Aiming bi-xenon’s in vertical direction can be achieved using Philips head screw driver. Access is gained through round hole in horizontal sheet metal located above and behind headlight assemblies.
Be careful, to not adjust too high, which would result in blinding others in front.
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Do you think this cannot be done in an european model?, the ominous high voltage warning stickers are certainly there. I will try tonight, and I will answer if I dont get and electric shock.
Thanks, Pablo
Thank you John for your help,
Originally posted by briar
I had to have my bi-xenon’s adjusted after taking delivery.
Be careful, to not adjust too high, which would result in blinding others in front.
--------------------------------------------------------------------------------
Do you think this cannot be done in an european model?, the ominous high voltage warning stickers are certainly there. I will try tonight, and I will answer if I dont get and electric shock.
Thanks, Pablo
No doubt you can adjust the lights BUT you run the very serious risk of dazzling oncoming traffic. These lights are extremely bright and the adjuster wheel has been removed to prevent there accidental raising.
Your headlights should automatically adjust there height adjustment everytime you start the engine. This can be checked by either having someone stand near the front of the car when you start it (the headlights will move down, the back to the centre, even with the lights switched off) Failing that park the vehicle facing a wall, switch your headlights on, then start the engine. The headlights will move down, then back to the centre.
Nice speaking to you,
John
I raised my Bi-Xenons a little with a few turns of a screwdriver. Much better illumination and I have had no other drivers flashing me telling me to turn of the brights.
Easy.
Well, it is quite easy, as it was said elsewhere in this forum, there is a hole just near that ominous death menace advert, and with a screwdriver you can raise or low a bit the headlights,
I think i didnt overaised it, and i checked with other car, not to dazzle the oncoming vehicle,
Thanks for your advices,
Pablo
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Well, it is quite easy, as it was said elsewhere in this forum, there is a hole just near that ominous death menace advert, and with a screwdriver you can raise or low a bit the headlights,
Thanks for your advice,
Pablo
Hi Pablo,
Thanks very much for your kind remarks.
Take care,
Regards
John
The Best of Mercedes & AMG
I think I did about 2-3 turns up on both sides. I had the lights on shooting at my closed garage door to help me gauge how far it needed to go. BTW the auto leveling isn't effected by the adjustments.
BTW the auto leveling isn't effected by the adjustments.
Reading these posts, you have just addressed my major concern.
By carrying out these adjustments, I take it then, that the Auto-Levelling and pre-checks are not effected?
I have owned Estate cars for many years and it was not unknown for me to carry bags of cement in the back of the car and then when darkness fell I made a very good job of illuminating the sky. With Auto-levelling the problem was over come, and with this new generation of stabilised headlights it is even more difficult to dazzle 'pilots'.
Does your adjusting over-ride this? Or are you just correcting mis-aligned headlights?
Thanks for addressing the problem
John
Here's a bit of advice, don't bother adjusting the horizontals, just the veritcals.
Here's a bit of advice, don't bother adjusting the horizontals, just the veritcals.
Regards,
John
You won't get zapped there are adjusting knobs right behind the headlights. The inner knob which you will need a good sized philips screwdriver is for the verticle adjustment. The outter knob which needs a good sized regular screwdriver is for horizontal.
I think I did about 2-3 turns up on both sides. I had the lights on shooting at my closed garage door to help me gauge how far it needed to go. BTW the auto leveling isn't effected by the adjustments.
Its super easy to adjust the xenon lights. I adjusted mine to be just a little higher, because from the factory they are set so low as to be dangerous. I never ever get flashed. I think its just MB's way to stay away from getting sued.
Can you tell me what kind of spread patterns I should be looking for when I adjust my headlights? (for horizontal)
I noticed my right side was slightly lower and just last night, I raised it a bit to be the same level as my left. Then I noticed two different patterns on the wall. I guess one from each light. Am I suppose to superimpose these two patterns?
Any ideas here>
Thanks in advance
You should see a very wide angle "V" on the wall from each light where the left side is parallel to the ground and the right side should rise at about a 15 degree angle. The distance between the centers of the Vs should be the distance between the headlights. The left sides of the Vs should be the same distance up from the ground. Hope that helps.
This applies only to left-hand-drive patterns.
-s-
GearHead,
You should see a very wide angle "V" on the wall from each light where the left side is parallel to the ground and the right side should rise at about a 15 degree angle. The distance between the centers of the Vs should be the distance between the headlights. The left sides of the Vs should be the same distance up from the ground. Hope that helps.
Thanks for the headsup.
I thought I saw a "step image" instead of the "V" for each light. The step goes from left to right and the rise appears to be 100 degree angle from the left side. This image applies to both lights.
I'll try to shine my lights onto the garage door tonight since it is flatter and see whether I can duplicate the "V".
Will report my findings
THANKS AGAIN
I raised my Bi-Xenons a little with a few turns of a screwdriver. Much better illumination and I have had no other drivers flashing me telling me to turn of the brights.
Easy.
Me too.
I thought that the straght ahead illumination was woeful. I had my dealer check them out and they said they were OK. I was having to drive around with Full Beam on almost all the time on country roads.
2.5 turns on each side done the trick and definately no flashing from other road users.
GearHead,
You should see a very wide angle "V" on the wall from each light where the left side is parallel to the ground and the right side should rise at about a 15 degree angle. The distance between the centers of the Vs should be the distance between the headlights. The left sides of the Vs should be the same distance up from the ground. Hope that helps.
Now I see what you meant "V". It is the same "Step Image" I saw.
Thanks....got it leveled on both sides. The only thing that still bothers me is that why the direction of "V" is the same for both left and right lights. I would have thought that the angle of the "V" for the left is directly opposite to the angle of "V" for the right side.
Makes sense???
This applies only to left-hand-drive patterns.
-s-
Are you sure about this "misconception"? I have noticed while driving at night that the left low beam is distinctly lower that the right--annoyingly so. So I searched this fine forum and checked my owner's manual (as you and others have recommeded
). Page 124 says "If you drive in countries where vehcles drive on the ohter side of the road than the country where the vehicle is registered, you must have the headlamps modified for symmetrical low beams," implying that the low beams are asymmetrical to begin with. I don't mean to imply that the right headlight is pointing "up," but that the left is most assuredly pointing lower than the right.This seems like a bit of overengineering on MB's part to me.
So as this thread mentions, just a few turns of the screw, right?
The light pattern is stepped with an upward angle transistion to the right (____/------). Both lights have identical patterns. The lights should have the low steps at the same level which forms a horizontal line across the field of view. The upper step to the right is to illuminate road signs and roadside hazards. Be careful about having the lightd too high, because they will blind drivers in cars you overtake as well as oncoming drivers.
Last edited by NATS64; Jun 24, 2004 at 04:05 PM.


