Member Since: 01 Oct 2014
Location: Twickenham
Posts: 433
Auto Xenon lights flash on start up
Does any body else experience their Xenon lights flashing when starting up? I have the lights set to auto, when I start the car when it is dark the lights come on, immediately go off and then immediately come back on. They then stay on and all is good but I have had past cars with xenons and none have done this, it seems weird to start the bulb and then turn it off before starting it again, surely this will reduce its life
4th Nov 2014 10:40 pm
Robbie
Member Since: 05 Feb 2006
Location: ¯\_(ツ)_/¯
Posts: 17932
Do they flash when you turn them on manually?Land Rover - Turning Drivers into Mechanics Since 1948
Did the car come from the factory with xenons fitted, if not the previous owner may have had them fitted and not enabled on the car.
Flack
5th Nov 2014 8:32 am
wiggs
Member Since: 03 Sep 2006
Location: Manchester
Posts: 14372
Don't you "have " to enable d4 xenons after retrofitting ?
Pretty sure they don't work at all unless you doG4 Gone ...but not forgotten
5th Nov 2014 8:39 am
crip010
Member Since: 01 Oct 2014
Location: Twickenham
Posts: 433
Robbie wrote:
Do they flash when you turn them on manually?
No, if I start the car and just turn them on all fine.
If I get in the car and press the button once to turn on the ignition thats when they come on, go off and come on, then the 2nd push of the button starts the car and they stay on.
Wiggs and Flack: The car has them as standard from the factory so they are not an aftermarket fit
5th Nov 2014 9:14 am
Robbie
Member Since: 05 Feb 2006
Location: ¯\_(ツ)_/¯
Posts: 17932
Quote:
No, if I start the car and just turn them on all fine.
This tells me that the CCF setting is correct.
Is this linked with the start sequence, ie the lights drop out briefly at the point of maximum cranking before coming back on when the starter disengages?
You can test this by turning on the lamps manually just before cranking it, effectively taking the sensor and associated signals out of the equation.Land Rover - Turning Drivers into Mechanics Since 1948
Member Since: 01 Oct 2014
Location: Twickenham
Posts: 433
No, when the car cranks they stay on, it's at the point of pushing the button and the ignition coming on.
5th Nov 2014 9:39 am
M3DPO
Member Since: 22 Sep 2010
Location: Notts.
Posts: 8227
Re: Auto Xenon lights flash on start up
crip010 wrote:
Does any body else experience their Xenon lights flashing when starting up? I have the lights set to auto, when I start the car when it is dark the lights come on, immediately go off and then immediately come back on. They then stay on and all is good but I have had past cars with xenons and none have done this, it seems weird to start the bulb and then turn it off before starting it again, surely this will reduce its life
Are you sure they do actually go off?- they do flash when they first strike up then go dim and build up to full power in about 4 seconds, thats what mine do anyway but I've only got a primitive D3 It can when others can't,
It will when others won't,
It goes where others don't.
5th Nov 2014 3:00 pm
DaveC
Member Since: 29 Sep 2009
Location: Wirral
Posts: 1034
crip, I'm pretty sure my old MY10 used to do this so your not alone.
i worried about premature bulb blowing, that and the too sensitive auto bringing lights on unnecessarily so switched back to manual.
sadly i preferred to manually control my lights as i always popped signature lights on when driving so never bothered me too much. XC90 T8 R Design Pro
MY14 D4 HSE Lux (sadly gone)
Mariana Black with Ivory interior and lots of toys!
5th Nov 2014 3:11 pm
crip010
Member Since: 01 Oct 2014
Location: Twickenham
Posts: 433
Re: Auto Xenon lights flash on start up
M3DPO wrote:
Are you sure they do actually go off?- they do flash when they first strike up then go dim and build up to full power in about 4 seconds, thats what mine do anyway but I've only got a primitive D3
Yep they go off, I can here the relay clicking.
5th Nov 2014 3:17 pm
crip010
Member Since: 01 Oct 2014
Location: Twickenham
Posts: 433
DaveC wrote:
crip, I'm pretty sure my old MY10 used to do this so your not alone.
i worried about premature bulb blowing, that and the too sensitive auto bringing lights on unnecessarily so switched back to manual.
sadly i preferred to manually control my lights as i always popped signature lights on when driving so never bothered me too much.
Thanks DaveC, I'm just seeing if other cars same age do the same, I know what you mean the auto can be more trouble than its worth and I can of course just turn the lights with my hand
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