Facelift xenon adjuster issues

James_H

Member
My Z4 failed its MoT on the headlight alignment. The headlights have always given pretty poor forward vision, bit after reading past threads on here, I gathered this was normal for the car. The car has passed three earlier MoTs while I've owned it and nothing has happened to the lights since. The offside lens has always looked off-centre as per the picture.



In addition to the MoT failure, the car has an ugly deep scratch above the nearside headlight that wasn't there when I took it in. That's the second MoT now (different garages) this car has has come back damaged, and now I feel that the small independant garages in Reigate where I work just can't be trusted. I can't risk my car going back there so cancelled the follow up appointment (as no-one suitable could look at it on the test day). It was also just before my holiday, so Ieft it to deal with later.

Now I'm back home, I've had a closer look and the entire adjuster knob is missing:



I've had a good search on this forum and online in general, but haven't found much of the same problem. There seem to be a lot of E39 5 Series with broken plastic adjusters inside the headlight that the missing knob would control. There is plenty of talk ofadjuster replacement, but not replacement knobs to control them.

An entire new headlight would solve it, but the best price at over £800 in the UK or just over £700 if I buy one from Germany. None of exactly the same light have come up on eBay recently - this is the Z4M Xenon with the bright inner.

It seems that the 2001-2003 facelift E39 light has adjuster knobs that appear the same as the Z4, with the white plastic nut on top that engages with the teeth of the main black part to screw in and out of the internal plastic parts. All other BMWs, including the pre-facelift E39s, look different.

Has anyone had the same problem and found a not-too-expensive way to fix?

Alternatively, I will look for an E85 or suitable E39 facelift light that is cheap enough to buy and cannibalise for the adjuster knob. If anyone has a broken light still hanging around - but with the adjuster knob still present - I could be interested in buying it. Hopefully I can save money on the headlight fix that can go towards sorting the paintwork on the Z.
 
It's the white piece thats missing but the black cog is still there by the looks of things. That cog has a 10mm plastic nut molded into it so you can still adjust it with a quarter drive ratchet and a 10mm socket :)
 
Unfortunately, the black plastic part with the 10mm nut has also gone, just leaving the hole that the thread would have gone into.

This picture is in maxman's for sale thread and it's the one at the top that's gone (though the pic is of the passenger side - the driver's one on mine is affected).
006.jpg
His lights would be too expensive (and too good) to butcher for parts.
 
Ahh thats unfortunate it looks like the black cog is still there in the pic. In that case is the metal rod still there? Maybe you could epoxy glue a nut to it? Or is your adjuster missing, broken completely? Theres definitely something wrong with the projector lens though I've never seen one from a zed that off centre before.
 
I have a drivers side shell which I split open.I have sold most of the parts,whats left can be seen in the photo.
Are any of the parts you need on show.
001-2.jpg
 
You could well be able to help. The part I'm missing is at the centre-top of your photo, the black geared wheel with the white nut on top. My picture is of the missing wheel viewed from above while still in the car. Are there any lugs or similar holding it in place?
 
James_H said:
You could well be able to help. The part I'm missing is at the centre-top of your photo, the black geared wheel with the white nut on top. My picture is of the missing wheel viewed from above while still in the car. Are there any lugs or similar holding it in place?
The screw has a shoulder which sits against the inside of the headlight, the nut fastens to the screw from the outside.
The one on the shell is tight ,I will have a go tomorrow at getting it off.
 
maxman said:
James_H said:
You could well be able to help. The part I'm missing is at the centre-top of your photo, the black geared wheel with the white nut on top. My picture is of the missing wheel viewed from above while still in the car. Are there any lugs or similar holding it in place?
The screw has a shoulder which sits against the inside of the headlight, the nut fastens to the screw from the outside.
The one on the shell is tight ,I will have a go tomorrow at getting it off.
The reason why the nut would not unscrew can be seen from the photo,it is a pressed onto the screw.
I used a centre punch to drift the screw out of the nut,when the metal screw is in place,the rubber seal sits inside the headlight shell.
You will find it very hard to do this with the headlight in situ
003.jpg
 
These bits are what I'm looking for. I'll send you a PM.

I can't easily tell whether the screw is inside the headlight or completely missing, but I'll have to get the bumper off and light out to do any fix anyway,
 
Back
Top Bottom