M-Class (W166) Produced 2012-2015

What is wrong with my low beam headlights?!

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Old 02-09-2017, 02:16 PM
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What is wrong with my low beam headlights?!

Someone please enlighten me! (Pun intended -ha!). I recently purchased a 2015 ML350 and when I drive at night, I can hardly see more than 30 feet in front of me! I see fine with the high beam lights (which I wish I could keep on because then my problem would be solved!).

We just tried replacing the low beam halogen and high beam with LED lights, and it made no differ nice where the low beam lights ar concerned. I feel like if I could replace the daytime running lights with a brighter light, my problem might be alleviated.

And speaking of the DRL--- in all other vehicles I've owned, they have always been down lower on the SUV, or more toward the side. On the Mercedes, its smack in the middle and the low beam is lower--- how does that make sense? What am I missing?

Any suggestions would be so appreciated! I need to see at night!
Old 02-09-2017, 03:31 PM
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Originally Posted by Indygirl25
...
We just tried replacing the low beam halogen and high beam with LED lights, and it made no differ nice where the low beam lights ar concerned.
...
You've installed LED bulbs in a halogen headlight housing?



My suggestion is spend the necessary money and upgrade to xenon headlight housings.
Old 02-09-2017, 03:37 PM
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You need an HID conversion kit. LEDs in forward projecting lighting in housing not designed specifically to capture LED surface mounted light spread will result in reduced throw distance and uneven lighting. The real proper thing to do is a xenon projector retrofit, but that's costly and involved... Most just throw HID conversion kit behind stock halogen projector and call it a day.
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Old 02-09-2017, 04:31 PM
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Originally Posted by pcy
You've installed LED bulbs in a halogen headlight housing?



My suggestion is spend the necessary money and upgrade to xenon headlight housings.
the Bi-xenon headlight assembly is avail on ebay, if you chose to go that route its worth it.

some people went the HID route in the newer GLE and are happy with it, get the longer range because halogens are default for the GLE 350, see the forums on the W166 GLE
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Old 02-10-2017, 10:51 AM
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Originally Posted by Indygirl25
Someone please enlighten me! (Pun intended -ha!). I recently purchased a 2015 ML350 and when I drive at night, I can hardly see more than 30 feet in front of me! I see fine with the high beam lights (which I wish I could keep on because then my problem would be solved!).

We just tried replacing the low beam halogen and high beam with LED lights, and it made no differ nice where the low beam lights ar concerned. I feel like if I could replace the daytime running lights with a brighter light, my problem might be alleviated.

And speaking of the DRL--- in all other vehicles I've owned, they have always been down lower on the SUV, or more toward the side. On the Mercedes, its smack in the middle and the low beam is lower--- how does that make sense? What am I missing?

Any suggestions would be so appreciated! I need to see at night!


I assume you have the halogen lights and not the Xenon. Aftermarket LED is a waste of time, do with a HID kit instead. The headlight's height is adjustable, just turn it up some and you will be fine.


Check out this thread:


https://mbworld.org/forums/new-m-cla...djustment.html
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Old 02-11-2017, 11:49 AM
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Thanks so much for all your help!!! Ordered the Morimoto HID kit from AZN Optics-- can't wait to be able to see clearly at night again!

And, btw, it was MY HUSBAND who ordered the LED lights..... and huh, it was ME who knew enough to check out the MB Forum.....just sayin' ��
Old 02-12-2017, 08:29 AM
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Please let us know how good it is as I have the same issue with my ML 350
Old 02-12-2017, 12:25 PM
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Visibility from HID kit will definitely be better than the stock halogen headlights.

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Old 02-12-2017, 09:14 PM
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Originally Posted by Snowbird12
Please let us know how good it is as I have the same issue with my ML 350
Old 02-13-2017, 12:44 AM
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Originally Posted by Snowbird12
Please let us know how good it is as I have the same issue with my ML 350
I totally will!
Old 02-13-2017, 01:18 PM
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Originally Posted by Indygirl25
Thanks so much for all your help!!! Ordered the Morimoto HID kit from AZN Optics-- can't wait to be able to see clearly at night again!

And, btw, it was MY HUSBAND who ordered the LED lights..... and huh, it was ME who knew enough to check out the MB Forum.....just sayin' ��

You might want to check out this thread on Morimoto HID kit upgrade, make sure you ask AZN Optics if you need a Canbus canceller, I believe you do need one or else you will get the bulb out error on your dash.


https://mbworld.org/forums/new-m-cla...em-solved.html
Old 02-13-2017, 03:26 PM
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