Driver side headlight keeps going out?

[airline tech]

This is what is so confusing and makes it seem like something internal in the headlight assembly. Why does it shut down in low beam and still work in high beam

The way Bi-LED Projectors work is they have one LED that is used anytime the headlights are on and have a shutter assembly that drops down into the beam to create the cutoff line for low beam.

The headlights the OP has have three of these assembles in each light. All I can think of is a thermal break in the traces on the control board in the light that when the the shutters are activated it turns off the LEDs. Then after the lights have been off for a while the break closes and the lights work again and they work again until the heat up again. Has to be on the main control board as all three of the Bi-LED unit in the light are affected together.

Hopefully the vendor will get you a new assembly to replace the one not working correctly. I know having to change it out is a PITA. If it was a FORScan setting issue I think it would affect both lights the same.

This is most likely the issue, but the only way to confirm is wire checks and even jump power to the Low Beam circuit as a test.
Moreso - Highly Needed as they are a PITA to replace.
Yes, it is a shutter control using the same (LED) but there is still a separate power source for each light output - if the BCM dumps power for the Low Beam, then the Low Beam will become inoperative. As the BCM is still programed as if there is a (Separate Low Beam) Bulb installed.

The Halos - Tie in DRL's into the Low Beams @ 50% Power and Aftermarkets tie in a (Tapped) power source on that DRL Circuit.
So, you have a Tapped Power source feeding on a circuit (DRL) that the BCM sees as it should be (OFF) as the Headlights are (ON)
The BCM decides that there is an issue on the circuit and dumps power, yes it would make sense that it should affect both Left & Right sides, but history of issues on this forum show if issues arise with the headlights (It is almost always the (LEFT SIDE)

So, for the OP - When you installed the lights - Did you (ft Deselect) the DRL Option (Turn-Off) in the IPC Menu?
This may fix your issue, but it must remain (Turned Off)
This is the circuit that is causing the issues - The Tapped Power source on DRL circuit that the BCM still is programed for Low Beams, The IPC Menu turns off the DRL's but the BCM is still programed and unless you change the As-Built Data, it will remain that way.
Selecting (Off) the DRL in the IPC, May or May Not fix the issue, but it is something to try.

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[AUXITO]

Why would the CAN-BUS system turn off only one bulb??

@airline tech
He had a very professional response.
In fact there can be short circuits or bad bulbs as well. For owners, I think the easiest way to test this is to swap the driver and passenger side LED bulbs. When the problem is found to be on the same side then the wiring needs to be checked or a decoder added to try and fix it.
BTW, I appreciate airline tech's reply, learned something useful.

 

[AghastVenus1]

Simple answer is you need a decoder spliced in-line with your driver side low beam circuit. I've dealt with the exact same issue with my aftermarket Akkon LED housings.

What's happening is that for whatever reason, car manufacturers program the BCM to momentarily cut power to that circuit to check for faults. It's such a minor cut that it doesn't affect halogen bulbs, but LED lights HATE it and shut off completely. Putting a decoder in maintains power flow to the LED when the BCM does its little check.

If you have actual LED bulbs, then you can get any number of decoders from Amazon that are plug and play; and they only cost around $10. If your lights are closed housings like mine are, then you need to splice the circuit. Either way, don't freak out if after you install it your light doesn't come on at all. It's polarity sensitive and you just put it in backwards. Take it out, flip it around, and you'll be right as rain.

 

[airline tech]

Hello friends.

I've been having an issue where my driver side headlight keeps turning off, like it's burned out. I recently installed Vland LED headlights and thought it might have something to do with it, but looking at the halogen bulb it looks good to me.

Today I noticed it will be working when I turn the truck on, but after 10 or 15 minutes it turns off. DRL, blinker, and high beam all work, but the low beam just turns off.

Any insight is appreciated.

I am working on something, can you post the install instructions that came with the headlights?
Trying to find them online proves difficult.
I am putting together a wire differences between the Factory and Aftermarket Lights.
In fact I am looking for All aftermarket lighting PDF’s , I thought would be easy but NOPE, it takes a secret code I guess.
I have a video for Morimotos and GTR and a PDF for Alpharex but VLAND is elusive and hidden for what I am looking for.

 

[Rp930]

It seems like there are problems with every one of these aftermarket headlights. No thanks. They’ve not cheap. I would send them back.

 

[AghastVenus1]

It seems like there are problems with every one of these aftermarket headlights. No thanks. They’ve not cheap. I would send them back.

To be fair, if you keep a halogen housing and simply put LED bulbs into it, you're going to run into this issue as well. The aftermarket housings aren't defective, automotive electrical engineers are just a pain in the ass.

 

[Rp930]

To be fair, if you keep a halogen housing and simply put LED bulbs into it, you're going to run into this issue as well. The aftermarket housings aren't defective, automotive electrical engineers are just a pain in the ass.

Maybe so but they should sell a product that works. Especially a safety item.

 

[airline tech]

Since VLAND Install Instructions require SECRET CODE to get.

For anybody that has these installed

Can you confirm - That this is how the US Version is wired

I am curious about the Turn Signal - Plug
Now I can see the (ACCY) Plug, and the reason for it
I can see the (Sequential) Plug and the reason for it

What I see with the VLAND
The Main Harness is wired and is (Missing Pins 3 & 8) -Below
Pin 3 = High Beam Power from the OEM Connector
Pin 8 = Ground from OEM Connector

So, I am looking for (OP) how many wire taps do you have - feeding the light?

The VLANDS are a oddball wire setup, compared to the rest of the Aftermarkets with that Turn Signal (Plug)

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