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Author Topic: xenon lights too low for mot  (Read 1720 times)

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zulu one zero

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xenon lights too low for mot
« on: 06 August 2009, 12:39:07 »
HELP! my ex plod car is in for MoT just now, & they are saying that the lights are aimed too low. apparently, the adjusters are seized - also a light showing on dashboard reference self levelling (i think).
So, the question is, is there a way of loosening the adjusters, without having to get new lights, which is what the garage is talking about?? Or, is this likely to be the fault of one of the sensors on the suspension?
Any thoughts/advice would be very much appreciated!
dewar
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Squatch

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Re: xenon lights too low for mot
« Reply #1 on: 06 August 2009, 13:01:55 »
I had this problem - first - get rid of the self levelling and fit normal shocks. It's an expensive pain. Seized adjusters can be freed with a good penetrating oil :y no need to get new lights! Then adjust away..
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Lee A

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Re: xenon lights too low for mot
« Reply #2 on: 06 August 2009, 13:03:25 »
I just had the problem, funnily enough. Theres a couple of reasons you could have the fault:

1. The sensors have come off on the suspension, theres some links on the front and rear wishbones, passenger side, is worth checking those first

2. One or both of the servo motors in the headlamps have siezed. This was my problem  :'( One of the motors was full of rust when i took it apart, i bought a pair of used headlamps off a guy on here and luckily the servos on his are fine, swapped them over, job done!

Its dead easy to whip the headlamps out so you can have a proper look if its not the sensors on the chasis, theres a guide on here if you need it. The only fiddly bit is the lower 8mm bolt that holds the headlamp in.

Cheers!
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Lee A

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Re: xenon lights too low for mot
« Reply #3 on: 06 August 2009, 13:12:00 »
This is what a bad one looks like  :'( :'( :'( :'(

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Kevin Wood

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Re: xenon lights too low for mot
« Reply #4 on: 06 August 2009, 13:31:41 »
Ahh, that'll explain why the Tech2 was less than impressed with them, Lee A. :y

Not the first motor I've seen in that state. Glad you've got to the bottom of it!

Kevin
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Lee A

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Re: xenon lights too low for mot
« Reply #5 on: 06 August 2009, 13:43:47 »
Cheers Kevin. Ive popped those removal wires back in the post to you today btw, should get them back tomorrow or Sat  :)

Lee
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Kevin Wood

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Re: xenon lights too low for mot
« Reply #6 on: 06 August 2009, 13:45:07 »
Excellent. Thanks for that Lee. :y


Kevin
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zulu one zero

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Re: xenon lights too low for mot
« Reply #7 on: 06 August 2009, 13:47:37 »
thanks guys  ;)  my tame mechanic & I will have a look at the weekend! might do it sooner, but seem to be running short of time.....
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Andy B

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Re: xenon lights too low for mot
« Reply #8 on: 06 August 2009, 19:51:52 »
Quote
I had this problem - first - get rid of the self levelling and fit normal shocks. It's an expensive pain. Seized adjusters can be freed with a good penetrating oil :y no need to get new lights! Then adjust away..

Self levelling suspension & self levelling headlights are two completely different animals and are no way whatsoever connected to each other.  :y
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zulu one zero

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Re: xenon lights too low for mot
« Reply #9 on: 06 August 2009, 21:44:27 »
to clarify, when I mentioned the self leveling thing, I was referring to the system for the xenon lights, not self leveling suspension. I'll have a look at it over the weekend & let you know whats happening.
Thanks for all the help so far
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zulu one zero

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Re: xenon lights too low for mot
« Reply #10 on: 23 August 2009, 22:14:49 »
to continue the saga - I've been out of country - car failed MoT on headlamp aim being too low (xenons). when stationary, I've now noticed that the aim seems to constantly move up & down. apparently the two level sensors are ok. does anyone have any suggestions what to do now?
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SteveD

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Re: xenon lights too low for mot
« Reply #11 on: 23 August 2009, 22:34:42 »
Bracket bent at the rear. Mine got jacked under it by a dodgy tyre shop. I stuck a screwdriver in the gap between arm & sensor and just "adjusted" it back down.
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TheBoy

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Re: xenon lights too low for mot
« Reply #12 on: 24 August 2009, 09:24:04 »
Quote
to continue the saga - I've been out of country - car failed MoT on headlamp aim being too low (xenons). when stationary, I've now noticed that the aim seems to constantly move up & down. apparently the two level sensors are ok. does anyone have any suggestions what to do now?
hmmm, check the adjusters aren't in a million pieces  :-/
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zulu one zero

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Re: xenon lights too low for mot
« Reply #13 on: 24 August 2009, 21:55:28 »
thanks folks - i'll check both & get back to you. is there anyone in/near aberdeen that might be able to have a look at this for me if i get totally stumped?
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hotel21

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Re: xenon lights too low for mot
« Reply #14 on: 24 August 2009, 22:08:07 »
Have seen similar resolved by clever application of a washer under one or other of the securing screws, between it and the bodyshell mounts, thus either lifting/lowering/moving the light output to suit - not that I would ever condone such scurrillous behaviour, you understand.....   ;)
« Last Edit: 24 August 2009, 22:08:41 by hotel21 »
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3.2 manual

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Re: xenon lights too low for mot
« Reply #15 on: 24 August 2009, 22:10:52 »
just a thought i have hid, on the near side front wishbone at the back of the arm, i have a little arm, which goes to a sensor, i assume this is something to do with knowing the height of the front of the car. so could be connected.
« Last Edit: 24 August 2009, 22:12:14 by lovelectricity »
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oh bugger, i thought that was a bit of wind!!!

hotel21

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Re: xenon lights too low for mot
« Reply #16 on: 24 August 2009, 22:24:45 »
Correct, but there are always default settings that the lights would adjust to in lieu of corrects positions from the sensors....
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