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Confused by Xenons

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Davethegeo

Member Since: 01 Oct 2015
Location: Edinburgh
Posts: 879

2014 Discovery 4 3.0 SDV6 HSE Auto Corris Grey

Confused by Xenons

Can someone please tell me what headlight this is. Is it suitable for my MY2012?
I'm hoping it is a bi-xenon headlight, but the DS3/H7 on the label suggests otherwise...

Many thanks D1 300Tdi - gone
D2 Td5 ES (Alive remapped...mmm) - sadly gone
D4 2012 SDV6 XS - Stolen
D4 2014 SDV6 HSE - Shiny

17th Feb 2019 11:02 pm

Dave T

Member Since: 03 Jul 2009
Location: Glasgow
Posts: 6902

Is the main beam not halogen on these? Are there two bulbs inside, a Halogen will be obvious

Does it have a cornering bulb, looks like it, don't think halogens have that. Joined the BMWX5 45e group
1994 Defender 90

2015 RRS Corris Grey/Black roof
2016 D4 Graphite Santorini Black
2012 D4 XS Orkney Grey
2005 D3 S Maya Gold

Convoy for Heroes 2011

18th Feb 2019 7:50 am

sasdiscos

Member Since: 22 Feb 2013
Location: Northants
Posts: 886

2010 Discovery 4 3.0 TDV6 HSE Auto Bali Blue

AFS Adaptive Front-Lighting System.

It will have, they have bi and a halogen lamp.

Steve You remind me of a younger me, not much younger mind...perhaps even a little older!

18th Feb 2019 8:53 am

Davethegeo

Member Since: 01 Oct 2015
Location: Edinburgh
Posts: 879

Thanks. How does that version of the headlight compare to bi xenon in terms of brightness? D1 300Tdi - gone
D2 Td5 ES (Alive remapped...mmm) - sadly gone
D4 2012 SDV6 XS - Stolen
D4 2014 SDV6 HSE - Shiny

18th Feb 2019 10:15 am

dgardel

Member Since: 03 Nov 2009
Location: Greater Venice
Posts: 2025

2014 Discovery 4 3.0 SDV6 XXV LE Auto Santorini Black

All D4 with Xenon (HID) bulbs are bi-xenon (low and high beam). But pre facelift has Bi-xenon AND H7 higbeam, facelift (MY2014-on) has ONLY HID bi-nenon bulbs.

In other words pre facelift are better!!!!!

Both model has several configuration eg the AFS (fitted or not)...

Below pre facelift (RH) vs facelift (LH)

Click image to enlarge

Here the differences from the "normal" halogen bulbs and HID Bixenon (post faceliftinig):

Click image to enlarge

Discovery 5 tdv6 HSE Corris Gray Outback Engineering Limited Edition

IID Pro MV License

18th Feb 2019 12:04 pm

Davethegeo

Member Since: 01 Oct 2015
Location: Edinburgh
Posts: 879

Grazie mille!
So....I'm talking about the pre facelift model (advertised as 2010-2013). The headlights definitely have an H7 bulb in there. I know assume that the "bi-xenon" refers to the fact that the HID bulb is used for dipped and main beam, altering the focus by means of some flap? Do the HID and halogen both come on for high beam? D1 300Tdi - gone
D2 Td5 ES (Alive remapped...mmm) - sadly gone
D4 2012 SDV6 XS - Stolen
D4 2014 SDV6 HSE - Shiny

18th Feb 2019 1:09 pm

dgardel

Member Since: 03 Nov 2009
Location: Greater Venice
Posts: 2025

Davethegeo wrote:
Grazie mille!
So....I'm talking about the pre facelift model (advertised as 2010-2013). The headlights definitely have an H7 bulb in there. I know assume that the "bi-xenon" refers to the fact that the HID bulb is used for dipped and main beam,

1. altering the focus by means of some flap?

2. Do the HID and halogen both come on for high beam?

1. Not by altering the focus but with a moving flap for the dipped pattern (flap up) and high beam (flap down)

2. YES both on with high beam

on my previous MY2011 D4 I installed the LED H7 bulbs and the light was fantastic! MY2014-ON brightness is very poor compared to the new ones Discovery 5 tdv6 HSE Corris Gray Outback Engineering Limited Edition

IID Pro MV License

18th Feb 2019 1:38 pm

Davethegeo

Member Since: 01 Oct 2015
Location: Edinburgh
Posts: 879

Thanks everyone for your help. Special thanks to dgardel for his pics and explanation. D1 300Tdi - gone
D2 Td5 ES (Alive remapped...mmm) - sadly gone
D4 2012 SDV6 XS - Stolen
D4 2014 SDV6 HSE - Shiny

18th Feb 2019 3:56 pm

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