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B5 Headlight Conundrum

 
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ABRAD
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Joined: 08 Feb 2008
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PostPosted: Tue Nov 21, 2017 8:09 pm    Post subject: B5 Headlight Conundrum Reply with quote

Hi

Might seem a stupid question - but does anyone know why the inner headlights in the UK B5's lack a bulb unit and that the Hi-Beam is incorporated in the outer Xenon unit's?

I thought that it might be due to the added supercharger but it appears (looking on the register photos) that the Far Eastern and European Cars come with said unit - presume it is the highbeam??

Just curious.
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PostPosted: Wed Nov 22, 2017 12:32 pm    Post subject: Re: B5 Headlight Conundrum Reply with quote

ABRAD wrote:
Hi

Might seem a stupid question - but does anyone know why the inner headlights in the UK B5's lack a bulb unit and that the Hi-Beam is incorporated in the outer Xenon unit's?

I thought that it might be due to the added supercharger but it appears (looking on the register photos) that the Far Eastern and European Cars come with said unit - presume it is the highbeam??

Just curious.


Headlights are a complex topic!

On LCI/facelift (2007 on) E60 series cars the xenon unit is a bi-xenon, which essentially means the bulb has a cap over the top section, when high beam is activated the cap is lifted, giving the full high beam. This means the inner lamp is redundant and so appears black given empty location.

If the car was specified with Visibility Pack, the the beams adjust according to steering angle (adaptive lights) and come with high beam assist. On these lamp units the inner lamp location has a bulb in it (so appears silver not black), and the bulb is activated at low speeds to assist with low speed maneuvers, so called kerb lights.

Chances are the cars you've seen pictures of have Visibility Pack. I've noticed the same - UK cars mainly only have standard Xenon, European cars have Visibility.

On pre-LCI Xenon headlamps, I think the inner lamp still has a halogen high beam bulb in it, but I could be wrong. But I'm certainly clear on the E60 LCI version though.

HTH. I'll get my coat...
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WINNE1
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PostPosted: Wed Nov 22, 2017 8:59 pm    Post subject: Reply with quote

My B5 2006 56 has the inner lamp with a halogen high beam bulb in it.
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PhillV8S
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PostPosted: Thu Nov 23, 2017 12:42 am    Post subject: Reply with quote

My 2008 B6s has no inner halogen fitted.
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ABRAD
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PostPosted: Fri Nov 24, 2017 7:41 pm    Post subject: Reply with quote

Thanks chaps.

Wierd how they are all different.

Ours hasn't even got the high-beam assist and definitely no Visibility Pack- so that will explain it.

The weather must just be worse in Japan and Europe!!!
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