L322 Flickering rear lights

Parkheadbhoy · 2024-10-31T15:18:01+0000

Hello. I have a 2008 diesel Range Rover Vogue which I bought last Feb. I have had a problem since buying it of flickering rear lights and a couple of other weird electrical problems. More obvious now with the dark nights. When I start the engine and put on the lights, the rear lights start flickering and after 30 seconds the rear fog lights ( both sides) flicker and then stay on for about 5 minutes then they 'die' out and go out. The flickering rear lights remain. The front lights are fine. When the engine is not running, the rear lights are fine - only become a problem with the engine running. Replaced the battery s couple of weeks ago. Keep getting cars behind me flashing their light for the first 5 minutes of any journey because of my dodgy rear lights - bit annoying! Got an MOT coming up soon so wondering if this will be a fail. Any thoughts would be much appreciated. A recommended auto electrician for west Cumbria would also be appreciated.
Regards

Datatek · 2024-10-31T16:14:24+0000

Parkheadbhoy said:
Hello. I have a 2008 diesel Range Rover Vogue which I bought last Feb. I have had a problem since buying it of flickering rear lights and a couple of other weird electrical problems. More obvious now with the dark nights. When I start the engine and put on the lights, the rear lights start flickering and after 30 seconds the rear fog lights ( both sides) flicker and then stay on for about 5 minutes then they 'die' out and go out. The flickering rear lights remain. The front lights are fine. When the engine is not running, the rear lights are fine - only become a problem with the engine running. Replaced the battery s couple of weeks ago. Keep getting cars behind me flashing their light for the first 5 minutes of any journey because of my dodgy rear lights - bit annoying! Got an MOT coming up soon so wondering if this will be a fail. Any thoughts would be much appreciated. A recommended auto electrician for west Cumbria would also be appreciated.
Regards

Does the car have LED lights as standard or have aftermarket LED's been fitted?
If the former, look for poor electrical connections such as earths and corroded connectors.
If the latter, fit the correct bulbs.

Parkheadbhoy · 2024-10-31T17:22:19+0000

Hello. Looks like LED's as standard. I'll have a look tomorrow.

stuu · 2024-10-31T17:40:20+0000

Assuming its an l322 not a l320
2008 should be halogen units with led brake lights, red bottom clear top,
Led wasn't standard fit until 2010,
I have a 2006 with a 2010 facelift and 2011 led rear lights (2010 had grey trim inserts 2011 had black)

1, You can get resistors from powerful but i think the flicker still exist,
2, you can code out the hot and cold bulb checks,
3 you can use relays to power the lights no flickering no coding,

I managed to use an lcm and keep the cold and hot bulb checks by changing the pwm,

Another note to make that is overlooked on facelift conversions is that the led units only expect to see 13.5v not the 14+v you get from the alternator,
You'll see this stamped on the back of the lights if they're genuine units mine are genuine so can't comment on the copys,

The pwm has an effect on voltage and the brightness of the leds,

L322 Flickering rear lights

Parkheadbhoy

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Datatek

Well-Known Member

Parkheadbhoy

Member

stuu

Well-Known Member

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