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conor



Member Since: 27 Aug 2021
Location: London / Ireland
Posts: 146
United Kingdom 2005 Range Rover Supercharged 4.2 SC V8 Zambezi Silver
Flickering lights....

Hey guys,

I paid a quick visit to show a friend my L322 yesterday. It was dark so I got to put on the lights.

I think when I turned the dial to the right of steering wheel to low beam, they came on but the rear lights flickered along with the instrument cluster.

I wonder what would be causing this?

Cheers
Post #613234 20th Nov 2021 11:46am
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Dolphinboy



Member Since: 07 Dec 2009
Location: Bristol
Posts: 3136
United Kingdom 2011 Range Rover Vogue TDV8 Atacama Sand

LED bulbs will cause flicker on light up.
Post #613261 20th Nov 2021 3:58pm
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conor



Member Since: 27 Aug 2021
Location: London / Ireland
Posts: 146
United Kingdom 2005 Range Rover Supercharged 4.2 SC V8 Zambezi Silver

Do you mean just on turning on the lights?
Post #613283 21st Nov 2021 12:24am
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conor



Member Since: 27 Aug 2021
Location: London / Ireland
Posts: 146
United Kingdom 2005 Range Rover Supercharged 4.2 SC V8 Zambezi Silver

Ok, I have been doing a little more research.

All commentary online suggests a fault LCM.

I had a quick look at the codes found during the last scan, and the LCM shows the following:


LCM-Light Control

0x52 Check brake fluid fault

0x7A Front left sidelight defective

0x7B Front right sidelight defective

0x92 Rear left foglight defective


Brake fluid is legit. I'm wondering if the other bulbs are actually gone, causing the flicker due to voltage imbalance (?) or if the faults are thrown due to faulty LCM?

What is a natural next course of action? Would it be to test out the bulbs as indicated above - if they work, then it's the LCM. If the don't work, replace them all and see what happens?

Thanks a lot
Conor
Post #613285 21st Nov 2021 2:26am
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Cam-Tech-Craig



Member Since: 03 Aug 2011
Location: Gloucestershire
Posts: 16281
England 2015 Range Rover SVAutobiography SDV8 Loire Blue

Conor, the LCM will check the Cold monitoring and the Hot monitoring of all lights... This is why the lights flash on start up as the LCM send a small voltage through every bulb to check continuity and if you have LED bulbs fitted this voltage will send the LED beserk... Thumbs Up
Post #613330 21st Nov 2021 5:26pm
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conor



Member Since: 27 Aug 2021
Location: London / Ireland
Posts: 146
United Kingdom 2005 Range Rover Supercharged 4.2 SC V8 Zambezi Silver

Interesting, thanks Craig.

Is that a temporary thing on startup or something that needs addressing?

It doesn't feel normal to me.
Post #613407 22nd Nov 2021 12:20pm
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mjdronfield



Member Since: 04 Nov 2011
Location: Derbyshire
Posts: 7793
United Kingdom 2011 Range Rover Vogue SE TDV8 Buckingham Blue

It should only do it on startup for a second or two, and only if LED bulbs are fitted. You can stop it by turning off cold monitoring with a diagnostic tool, but again, only if LED bulbs have been fitted.

If they haven’t, you have an issue that needs to be sorted.

Thumbs Up 2011 Range Rover Vogue SE 4.4 TDV8

Previous cars :
2003 Range Rover Vogue TD6
1999 Discovery Td5 ES
1995 BMW M5 3.8 6 speed
1992 Range Rover 3.9 Efi Vogue
1992 BMW M5 3.8
1988 BMW 735i SE
1989 Ford Sierra XR4x4 2.9i
1981 Ford Fiesta Supersport
Post #613410 22nd Nov 2021 1:01pm
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conor



Member Since: 27 Aug 2021
Location: London / Ireland
Posts: 146
United Kingdom 2005 Range Rover Supercharged 4.2 SC V8 Zambezi Silver

Ahh ok..

Now, I do recall briefly looking at the flickering bulb and it was a round "bulby" lol looking thing.. not sure if it was LED, but looked like a regular bulb.

Will confirm. Thanks.
Post #613411 22nd Nov 2021 1:34pm
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Mark T Boldry



Member Since: 08 Feb 2019
Location: York
Posts: 29
United Kingdom 

My 2012 Westminster 4.4 TDV8 has recently had a headlight flicker.. My lights are set to Auto, so when dark, they come on automatically, however, just over the past few evenings, the headlights will momentarraly flick off then back on again, they are off for less than a second, but on the dark small roads around here, it’s quite alarming when it happens...

What am I looking for in terms of rectification..?

Mark.
Post #614226 30th Nov 2021 7:37am
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