[silviacrazed]

Hi everyone, I need some help solving an issue I'm having with my wife's 2019 f33's adaptive LED headlights. When I turn on the high beams, they both illuminate briefly and then the right high beam turns off. The dashboard chimes and I get a "right high beam malfunction" message. After a few seconds I then get an "adaptive headlight malfunction" message as well. The adaptive headlights work fine with the low beams. How do I go about diagnosing this issue? I'm seeing there is a "Headlight Control Unit Module" (BMW part# 63118494844) for these headlights. I've also seen articles saying these modules have to be coded when they're replaced. I have a decent degree of mechanical ability (I've pulled an engine/transmission before), but I don't know a ton about the coding side of modern BMWs. I've been out of the BMW realm since the e46. Any help solving this issue would be greatly appreciated! TIA!

[Solidjake]

First thing I would do it remove the wheel on that side, take off the fender liner (8 or 10mm nuts) and inspect the wires going to the headlights. Usually the wires on the harness chaff and get worn out/exposed wires which can create those electrical problems on headlights.

[silviacrazed]

Originally Posted by Solidjake

First thing I would do it remove the wheel on that side, take off the fender liner (8 or 10mm nuts) and inspect the wires going to the headlights. Usually the wires on the harness chaff and get worn out/exposed wires which can create those electrical problems on headlights.

I checked all the wiring and it looked fine. Guess I'm onto something more complex.

[julian204]

Take a look in this thread: https://f30.bimmerpost.com/forums/sh...ight=high+beam

I also had a right high beam malfunction issue, although not exactly the same as you describe it. Only fix for me was to replace the right headlight itself.

[SkytMil99]

I am currently having the same issue with my 2019 F36. However, as I have been trouble shooting it. The error only occurs after the engine warms up. Last night I was driving after the car sat all day, the high beams worked fine for the whole ride until the temp gauge started increasing.

I took it the local BMW service center when I first starting getting the error and they were able to see the error codes on the computers history. However, the error never occurred while they were diagnosing it. All they suggested was to purchase a new head lamp unit and module. Just under $4,000. I'm having a hard time accepting the replacement idea since it works as it should when the engine is cold or off.

[The Airman]

Originally Posted by silviacrazed

Hi everyone, I need some help solving an issue I'm having with my wife's 2019 f33's adaptive LED headlights. When I turn on the high beams, they both illuminate briefly and then the right high beam turns off. The dashboard chimes and I get a "right high beam malfunction" message. After a few seconds I then get an "adaptive headlight malfunction" message as well. The adaptive headlights work fine with the low beams. How do I go about diagnosing this issue? I'm seeing there is a "Headlight Control Unit Module" (BMW part# 63118494844) for these headlights. I've also seen articles saying these modules have to be coded when they're replaced. I have a decent degree of mechanical ability (I've pulled an engine/transmission before), but I don't know a ton about the coding side of modern BMWs. I've been out of the BMW realm since the e46. Any help solving this issue would be greatly appreciated! TIA!

I don't think it would be your headlight assembly as the lights illuminate up briefly.

Similar to when you buy your garanteed 25,000 hour LED bulb for your lamp at Home Despot, and it burns out in a week. Its not the LED chip, it's the circuitry.

Here's a picture of my module accessed by a little door in the fender well. Notice all that beautiful Pennsylvania road slop all over it ?



You would need to pull the wheel and part of the inner fender well to access it full. Not a hard job. I don't think it'll need "coded". That is sometimes a buzz word that get thrown around a lot.

As an aside, I finally sealed up my front inner fender wells with waterproof marine tape, and I noticed now I don't get one drop of dirt in my engine bay. I was going to do a thread on that but just got lazy.

[ccqwerty]

What was the fix new headlight?