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post #6 of (permalink) Old 1st May 2016
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Re: Scenic 2004 1.9 diesel head light adjuster

Had a look at mine but without stripping out the headlamps, not a clue what they mean.
You may need to do a little investigation yourself.

The adjusters are immediately behind the dipped beam unit and can be recognised by a white plastic "bolt" head with what looks like a 6mm hex (allen) socket in them. Sticking straight up from a black plastic, cylindrical barrel.
Seems to adjust height of dipped beams by moving reflector.
Motor is built in, plug at bottom.

Find an allen key that fits.
Find a wall on flat ground that you can park facing.
Stick on dips and twiddle the white knob.
Piece of chalk to mark the wall so you can get back to start position and know which way is which.
From memory, on electrical adjust, 0 is max height, 4 is lowest, set to 0 and adjust dips to that. Do check which way the beams move pls.
You should be able to see a hard, horizontal cut off line in the beam pattern on the wall. If you can't, see below.
That should be below the headlamp height on the car to avoid dazzling people, how much can't say but seeing if you can adjust it may make more sense of what garage is saying.

Whether those adjuster units are part of the headlamp unit (so should have been with new headlamp) or separate fittings I don't know.
If separate, I have to question whether the garage fitted correctly to the lamp unit.
And struggle to believe both failed anyway.

Other reasons why adjustment is failing.
Blubs not put in correctly. There are location tabs and slots on the mounting. If blub is not in these properly, it will be out of line and pattern all over the shop.
Can usually be seen from front of headlamp, if blub seems to be slanted, it is.

Wrong blubs.
The standards have a silvered "cap" on the end of the glass. LED and aftermarket replacements may not have this. So light is pushed forward from blub instead of reflector and cannot be adjusted. Will be no solid cut off line or it will be swamped by the unfocussed light.

Old blubs.
The silvering can "wear" off with age...same as above.
Currently in Dancingdad's garage:
Qashqai 1.6 spark driven, Kia Sedona 2.9 TDI, Scenic II 15DCi 2004 (SORN) not quite RIP.

Last edited by Dancingdad; 1st May 2016 at 12:01 PM.
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