Rear LED tail light flicker weird!

[Begazzz]

Hi all.

First post and and looks like a common fault but not quite found what I'm looking for ( not a U2 quote)

car is 2008 2.7 avant Le Mans

2nd time today I've been flagged by another motorist saying my rear led lights ( not high level or brake lights) flick/flash on ever so quickly.

Had ad a look tonight with auto lights off and finally saw it. You'll almost miss it if you blink. Sometimes left or right one but not necessarily one after the other sometimes one will do it twice.

If if it was nackered completely I'd start looking at the earth thing being bad but this seems a bit weird.


Please can can anyone tell me wher to start. Thanks all in advance.

Dom.

[Begazzz]

Just be clear the lights are standard led tail lights. Ta.

[gupsterg]

Hi all.

First post and and looks like a common fault but not quite found what I'm looking for ( not a U2 quote)

LOL , Welcome to VWAF! .

car is 2008 2.7 avant Le Mans

2nd time today I've been flagged by another motorist saying my rear led lights ( not high level or brake lights) flick/flash on ever so quickly.

Had ad a look tonight with auto lights off and finally saw it. You'll almost miss it if you blink. Sometimes left or right one but not necessarily one after the other sometimes one will do it twice.

If if it was nackered completely I'd start looking at the earth thing being bad but this seems a bit weird.


Please can can anyone tell me wher to start.

If in your shoes I'd first remove the tail light units to inspect connections.

[Begazzz]

Yea guess your right. I suppose there are wires going back up to feed the lights in the tailgate as well? But they are doing the same thing so if they are in line then that should be the source. If not I'll smash it to pieces and sell it. I just think it's weird they are both doing it.

[gupsterg]

Outer tail lights harness goes into body, then control unit.

Inner tail lights harness goes to hinge, then control unit.

IIRC .

Will look at wiring diagram and other stuff tomorrow .

TBH first thing I'd have done is scanned car with VCDS but as I think you don't have that I skipped that step .

[MarkTM]

Are their any dash warnings of bulb failure?

Annoyingly was in Heavitree (Exeter) yesterday and had my laptop and VCDS with me.

If you ever drive up as far as Weston then let me know and I'll do a scan for you?

[Begazzz]

Are their any dash warnings of bulb failure?

Annoyingly was in Heavitree (Exeter) yesterday and had my laptop and VCDS with me.

If you ever drive up as far as Weston then let me know and I'll do a scan for you?

Thanks for that appreciate the offer. May well do as its dying for a run anyway. There are no warning lights showing at the moment either.

[estwick]

I had LED tail lights retro-fitted in my last 2006 A6 2.7tdi and the same thing occurred.

This was being caused by the lamp failure sensing system generating pulses for filament lamps. The duration of these pulses are too short to illuminate bulbs with filament heaters, but long enough to trigger LEDs.

At the time, my experience with VCDS was rather limited, so took it in to my local Audi dealer and they sorted it for an hour's labour charge.

I hope this helps.


Sent from my iPad using Tapatalk

[Begazzz]

Hi. That's interesting. Wonder if the lights were retrofitted despite last owners insistence they were original. ? It was registered 1st aug 2008 in case there are any Led nerds out there

[gupsterg]

Hi. That's interesting. Wonder if the lights were retrofitted despite last owners insistence they were original. ? It was registered 1st aug 2008 in case there are any Led nerds out there

Best thing is to ring Audi parts dept at a dealer, give VIN and they should be able to tell you what it should have from factory.

Also Audi Customer Care line can IIRC.

PR Code 8SK = Taillight assemblies with diodes (LED) , usually not found on the data sticker in spare wheel well / service log but you could have a check. VAG systems should find this code associated with your VIN, if fitted from factory.