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Low beam headlight alignment - advice needed

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Old 10-01-2013, 11:06 PM
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2010 Merc C250
Low beam headlight alignment - advice needed

Well after I got the ' change low beam' warning sign on the dash, I changed both my low beam halogens as described on the manual.
Tonight whilst driving I noticed that my drivers side beam was directed far left and high, darkness directly in front of me driving, then some light on the passenger side, not very high
-\
--\__.....-----

.......D....P

Could I really have really affected the alignment of the lights by changing the bulbs? If so is there a way I can readjust them back to a more parallel and even set up so at least I could see directly what's I front of me in the dark...not just out to the left?

Last edited by Sunster; 10-01-2013 at 11:10 PM.
Old 10-01-2013, 11:14 PM
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You cannot adjust left or right, but there is a white screw you can use to adjust up and down. Just park your car far away in front of a wall on a level surface and adjust up or down to see if that helps any, but don't move them too high, or you'll blind people.

Also, it's possible that you may have seated them slightly off. You should check that, too.
Old 10-01-2013, 11:19 PM
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Originally Posted by Richard2011
You cannot adjust left or right, but there is a white screw you can use to adjust up and down. Just park your car far away in front of a wall on a level surface and adjust up or down to see if that helps any, but don't move them too high, or you'll blind people.

Also, it's possible that you may have seated them slightly off. You should check that, too.
Where is this white screw?
Old 10-01-2013, 11:33 PM
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Originally Posted by Sunster
Where is this white screw?
It's on a tab connected the the headlight assembly. If you look into the engine bay, it should be somewhere around the low beam cap. I can't give a more precise description. lol. It's been a while since I've used it.

I do remember that it's a hex screw, though.
Old 10-01-2013, 11:40 PM
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I didn't touch any screws whilst putting the bulbs in. Must try refitting the bulbs tomorrow and see what happens

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