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MY14 Lights DRL & Indicator Relationship
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Famousfive
 


Member Since: 12 Aug 2014
Location: Southampton
Posts: 1806

Ukraine 2013 Discovery 4 3.0 TDV6 GS Auto Loire BlueDiscovery 4
MY14 Lights DRL & Indicator Relationship

Hi all,

I bought a test rig Xenon light to get to fix and document on getting the flash on MY14 lights on a MY13 and earlier D4 to work when lights are off.

Whilst I've got the rig I thought I would investigate how to get the DRLs to dim when indicating but don't know the behaviour from factory. So can I ask someone with a MY14 Xenon setup to have a look and let me know what happens at different stages of light output when indicating please.

What I know now:
DRL's bright when lights "off"
DRL's dim when sidelights only are on
DRL's bright again on main beam *not 100% sure of this but it works Smile


What I'd like to know when indicating:
Do DRL's dim to sidelight strength or lower or do they go off Question
Does this behaviour change when on side lights / main lights Question

TIA

Nick
 Stolen - D4 Loire Blue
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Post #199334420th Oct 2018 9:51 am
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Parallax33
 


Member Since: 03 Jun 2014
Location: Christchurch
Posts: 1125

United Kingdom 2014 Discovery 4 3.0 SDV6 XXV LE Auto Causeway GreyDiscovery 4

Hey Nick,

On my MY14, when I am stationary, neither DRL dims when indicators are flashing regardless of lights on or off.

I need to check what happens when I am moving but will need to be dark for this. I believe the side illumination light comes on and the DRL dims but will confirm.
 Justin

Discovery 4 MY14 XXV Causeway Grey
RRS MY12 Autobiography
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Post #199342520th Oct 2018 4:17 pm
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DaveJLBI
 


Member Since: 07 Mar 2014
Location: Clare
Posts: 657

Ireland 2014 Discovery 4 3.0 TDV6 HSE Auto Loire BlueDiscovery 4

Also, DRLs do not light if left in P for more than some set time I seem to remember.
  
Post #199389322nd Oct 2018 3:19 pm
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Hardware
 


Member Since: 28 Jun 2016
Location: Hiding under the M60
Posts: 12676

United Kingdom 2011 Discovery 4 3.0 SDV6 XS Auto Sumatra BlackDiscovery 4

when I fitted some after-market DRLs to the D4, I found a very useful Government (or maybe EU ?) document on the requirements of keeping them legal. I'm pretty sure it explained at length about dimming requirements if within a given distance of the indicators … but can't find the blessed thing at the mo. I'll have a look later if I can but SWMBO is taking me out for a curry so that's getting precedence ! Very Happy
  
Post #199391922nd Oct 2018 5:09 pm
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Famousfive
 


Member Since: 12 Aug 2014
Location: Southampton
Posts: 1806

Ukraine 2013 Discovery 4 3.0 TDV6 GS Auto Loire BlueDiscovery 4

Parallax33 wrote:
On my MY14, when I am stationary, neither DRL dims when indicators are flashing regardless of lights on or off.


I must be going mad then - i'm sure the factory std. MY14 DRL dimmed when indicating on the disco's I've seen and wanted that function on mine if possible ... but if you are saying it doesn't happen I won't investigate further Thumbs Up
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Post #199392522nd Oct 2018 5:42 pm
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Famousfive
 


Member Since: 12 Aug 2014
Location: Southampton
Posts: 1806

Ukraine 2013 Discovery 4 3.0 TDV6 GS Auto Loire BlueDiscovery 4

answered here Thumbs Up
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Post #199409023rd Oct 2018 7:01 am
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James1974
 


Member Since: 23 Nov 2017
Location: Stevenage
Posts: 990

United Kingdom 2010 Discovery 4 3.0 TDV6 XS Auto Barolo BlackDiscovery 4

Famousfive wrote:
Parallax33 wrote:
On my MY14, when I am stationary, neither DRL dims when indicators are flashing regardless of lights on or off.


I must be going mad then - i'm sure the factory std. MY14 DRL dimmed when indicating on the disco's I've seen and wanted that function on mine if possible ... but if you are saying it doesn't happen I won't investigate further Thumbs Up


Yes they do mate and have to
By law as indicator is to close to them see my thread below
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Post #199416723rd Oct 2018 10:47 am
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