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GraemeS
Member Since: 17 Mar 2008
Location: NSW
Posts: 688
  
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MJIbex wrote:in the centre of the pattern all is fine
Not so. The halogen beams are way above the fence in the centre. The flat line of the halogens doesn't magically flatten, just keeps going skywards. Llams, D3 suspension, 17" rims
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 Mon Oct 25 2010 4:16am |
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Popelka
Member Since: 31 May 2008
Location: Praha (Prague)
Posts: 1336
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to really see the halogen pattern cant you just unplug the Bi-xeons, there appears to be more light on the gate especially on the right side where the xeons is flat topped.
also MLIbex states his are NON-ADAPTIVE will there be a difference, one should hope not as the adaptive part is according to others when the car changes attitude with baking / accelerating etc. (do the adaptive turn sideways with cornering or have LR gone with side infills ?)
maybe video a slow drive up the the wall/gate with and without halogen on to see the difference !!
[of cause the real solution is to convince SWMBO that you need to buy some really big/bright spots  ) No matter how bad you are,you are not totally useless...you can always be used as a bad example
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| Mon Oct 25 2010 6:10am |
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GraemeS
Member Since: 17 Mar 2008
Location: NSW
Posts: 688
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Another picture closer to the gate would reveal the missing section of the halogens, but would reduce the gap between the bi-xenons and halogens making it look as though there's not much of a problem. A taller gate or building would show just how skywards the halogen beams get with a bit more distance. The halogen lights are mounted lower on the vehicle than the bi-xenons yet even at the distance in the picture, the halogen beam has crossed-over and by a significant degree. Llams, D3 suspension, 17" rims
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| Mon Oct 25 2010 7:11am |
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trebaix
Member Since: 24 Oct 2010
Location: midlands
Posts: 6
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Reading through all the D4 articles I have comes across this one. I am preparing to change my 56 plate Range Rover TDV8 for a D4 (hence my reading) and if it is of interest I have had the same problem with my RR lights since new. The whole unit is moved when adjusted, it is not possible to independantly lower the halogen light relative to the zenon. Potential good idea but stupid execution. I am convinced my old Classic RR's and P38's with uprated headlamp bulbs and a pair of Cibie Super Oscars were better than these zenon things which I agree have a wide spread but no long range penetration along the road.
Colin
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| Fri Nov 26 2010 12:52am |
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GraemeS
Member Since: 17 Mar 2008
Location: NSW
Posts: 688
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I've been looking at the Australian Design Rules for gas discharge headlights (ADR 77/00). These regulations specify that the high beam must produce a particular amount of light at 2 specific distances left and right of the centre of the low beam beam cut-off and on the same horizontal line when shone on a screen 25 metres away. I don't have a suitable meter but the halogens don't contribute any light on that horizontal line and I doubt the bi-xenons produce enough width to satisfy the tests.
The Oz approval was granted in June 2009, before production started in earnest so perhaps the design or manufacturing process was changed afterwards, but maybe the bi-xenons do indeed produce enough light at the sides to pass the tests. I have advised the certifying authority of this possible non-compliance, although I suspect I'm not the first to do so. Llams, D3 suspension, 17" rims
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| Fri Nov 26 2010 8:37am |
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RSAChris
Member Since: 16 Apr 2010
Location: Centurion RSA
Posts: 76
 
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Anyone got a fix for this yet?
It seems that all the people I talk to here in RSA (7 so far) has the same issue with missalignment. And yes, LR can't do anything about it.
I want to open up the headlight assembly tomorrow to see if I could fiddle.... 
Cheers
Christo 2010 Disco 4 TDV6 SE
R2D3 the 2007 Disco 3 TDV6 SE... gone now
Romulus [Defender 110 CSW Td5] will always be missed
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| Fri Jan 13 2012 7:19am |
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RSAChris
Member Since: 16 Apr 2010
Location: Centurion RSA
Posts: 76
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OK, so I took the headlamp assembly off and inspected ....
The plastic moulding for the fill-in Halogen is part and parcel of the base where the Xenon is fitted - so no adjustments here. The Xenon is fixed to the plastic moulding with 4 screws - plainly fixed, no adjustable thingy - nothing. And as previously said, the adjustment screws are for this complete contraption and no individual adjustment can be made... well uhmmm normally that is.
I gathered that the Xenon lamp had to be pointed to where the Halogen is pointing, so I loosened the Xenon fixture 4 screws and while on High-Beam, saw that the Xenon-fixture should be tilted about 4mm. I then inserted 4mm spacers between the top 2 screws and tighten... Heeha... both Xenon and Halogen then focused in the same spot. I then used the usual adjustment screws to adjust the whole assembly back down to where they should be.
All well and happy now.
Cheers
Christo 2010 Disco 4 TDV6 SE
R2D3 the 2007 Disco 3 TDV6 SE... gone now
Romulus [Defender 110 CSW Td5] will always be missed
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| Wed Jan 25 2012 12:59pm |
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SJ
Member Since: 24 Mar 2009
Location: North Yorkshire
Posts: 173
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I have the same problem with the halogens too high I can see further up the sides of the hills around where I live than I can up the road 
Has anyone else tried Christo's remedy?
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| Wed Feb 22 2012 7:40pm |
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