Headlights won't turn off

[merlin6014]

Hi all I have a 2010 gti mk6 with the factory xenon option and even with the headlights set to the "O" position they will not turn off. Always on whenever the car is running. Any suggestions?


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[Umai Naa!!]

Not the DRLs?

[merlin6014]

Not the DRLs?

Nope the main low beam headlights (and tail lights).


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[Umai Naa!!]

Has it always been this way? If so, it could be the way the BCM has been coded. You won't know unless someone runs a scan on it with VCDS/VAS-PC and knows what they're looking for in the coding.

[merlin6014]

Has it always been this way? If so, it could be the way the BCM has been coded. You won't know unless someone runs a scan on it with VCDS/VAS-PC and knows what they're looking for in the coding.

Hmm bought the car only last week


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[weonarok]

Hi all I have a 2010 gti mk6 with the factory xenon option and even with the headlights set to the "O" position they will not turn off. Always on whenever the car is running. Any suggestions?


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The light sensor in front of the interior rear view mirror is not blanked out by a vinyl sun visor strip across the windscreen by any chance? [emoji12][emoji848]


"You don't know what you don't know"

Cheers dave

[AdamD]

The light sensor in front of the interior rear view mirror is not blanked out by a vinyl sun visor strip across the windscreen by any chance? [emoji12][emoji848]

It won't be that; the lights are turned off when the switch is in the 0 position, regardless of the light sensor.

I second Umai Naa!! - it'll be a BCM coding issue. Should be easy enough to fix with VCDS.

[kamold]

Sounds like this might be coded in the BCM:

Daytime Running Lights - The systems are coded differently depending on the market:

"Daytime Running Lights (Scandinavia) active" should result in ALL exterior lights running
"Daytime Running Lights (North America)" should result in headlights Only lights running

Problem with the PQ BCM coding is it's 'masked' in byte 18. Byte 18 will just show 00.
So my guess is someone has changed the masked coding to 'Scandinavian mode' (perhaps byte 18 coded to 3C).

Do you have LED DRLs, and/or LED tail lights?

[weonarok]

It won't be that; the lights are turned off when the switch is in the 0 position, regardless of the light sensor.

I second Umai Naa!! - it'll be a BCM coding issue. Should be easy enough to fix with VCDS.

Yep that makes sense. Over looked the 'off' bit. Doh


"You don't know what you don't know"

Cheers dave

[weonarok]

My issue is a little opposite in that my 'auto' lights stopped working. Sensor still works for 'leaving home' but not 'coming home'. All coded correctly, VW techie tested sensor and no problem. But I now have to manually turn my headlights on.
I have tapped into low beam to detect when the DRLs are on and thought it may be getting a feed back so I fitted diodes to no avail.

Ah, all these first world problems. Haha


"You don't know what you don't know"

Cheers dave

[elephino]

Not a new problem. The DRLs are actually the headlights (as opposed to a separate bulb/s) but the process to turn the DRLs off doesn't work so they stay on all the time. So either VCDS to turn the DRL off or put up with it. VW have said (to me) that they won't fix the actual cause.

[Guest001]

Not a new problem. The DRLs are actually the headlights (as opposed to a separate bulb/s) but the process to turn the DRLs off doesn't work so they stay on all the time. So either VCDS to turn the DRL off or put up with it. VW have said (to me) that they won't fix the actual cause.

They wont do it because it is illegal to disable DRL's if factory fitted

[weonarok]

Headlights won't turn off

Not a new problem. The DRLs are actually the headlights (as opposed to a separate bulb/s) but the process to turn the DRLs off doesn't work so they stay on all the time. So either VCDS to turn the DRL off or put up with it. VW have said (to me) that they won't fix the actual cause.

Yep, H15 high beam dual filament globes.

Mind you I'm talking Amarok, but they're basically the same setup, same globes as VW passenger cars.

I run seperate LED DRLs and coded the park circuit to activate as DRLs so I have taillights during the day.

Because my DRLs are now always on with the park circuit I then needed the LEDs to go out when the headlights came on to be legal, hence tapping into low beam as a trigger to turn them off.

I suspect I've overlooked something that is causing my 'auto' lights to stop working.

As for your issue why don't you try pulling the light switch out (easy as) and unplug the connector to isolate the switch being the problem.


"You don't know what you don't know"

Cheers dave

[elephino]

They wont do it because it is illegal to disable DRL's if factory fitted

I doubt that, especially considering if you have DRLs on a non-xenon vehicle you can disable them yourself.

[elephino]

Yep, H15 high beam dual filament globes.

Mind you I'm talking Amarok, but they're basically the same setup, same globes as VW passenger cars.

I run seperate LED DRLs and coded the park circuit to activate as DRLs so I have taillights during the day.

Because my DRLs are now always on with the park circuit I then needed the LEDs to go out when the headlights came on to be legal, hence tapping into low beam as a trigger to turn them off.

I suspect I've overlooked something that is causing my 'auto' lights to stop working.

As for your issue why don't you try pulling the light switch out (easy as) and unplug the connector to isolate the switch being the problem.


"You don't know what you don't know"

Cheers dave

I'm not that bothered, actually, as when on country roads I used to turn them on anyway and most of my driving is to and from work so there's often evening driving so again the lights are on. So far I've only had to replace 1 headlight too.