[Stevae]

Hey guys,
I have a 2009 335i E92, and many years ago I upgraded the taillights to LCI LED's. They came with the resister boxes to aid the conversion without needing to code. These lights have worked flawlessly for many years now. Suddenly, my drivers side brake light only lights up halfway. I hadn't changed anything, so wasn't sure what the deal was. Curiously, I wrote the company I purchased the brake lights from, and they sent me an entirely new brake light unit to my surprise. I install it, and the same thing was happening with the new one, but the other side works perfectly well. So, it's DEFINITELY something to do with the brake wires on that side, and not the light itself, the FRM module or a fuse. I am perplexed as to what has happened, and how to fix it, other than investigating the wiring which is a time involved task. Any help from those who know would be much appreciated. Thanks in advance.

[Serf27]

You can try resetting your FRM counters.

[Stevae]

Originally Posted by Serf27

You can try resetting your FRM counters.

I'm not sure if you're talking about the dash counters reset or not? If not, then how is that done?

And thanks for the advice.

[crashoverride]

This might sound too simple. But my passenger side rear lights keep popping out of the holder... Light comes out but only half as the rest have fallen down.

[hitthelights]

Originally Posted by Stevae

Hey guys,
I have a 2009 335i E92, and many years ago I upgraded the taillights to LCI LED's. They came with the resister boxes to aid the conversion without needing to code. These lights have worked flawlessly for many years now. Suddenly, my drivers side brake light only lights up halfway. I hadn't changed anything, so wasn't sure what the deal was. Curiously, I wrote the company I purchased the brake lights from, and they sent me an entirely new brake light unit to my surprise. I install it, and the same thing was happening with the new one, but the other side works perfectly well. So, it's DEFINITELY something to do with the brake wires on that side, and not the light itself, the FRM module or a fuse. I am perplexed as to what has happened, and how to fix it, other than investigating the wiring which is a time involved task. Any help from those who know would be much appreciated. Thanks in advance.

Ever resolve this? I bought a E92 M3 with this LCI swap and am having a similar problem. Half the passenger side LEDs turn on during braking. They are all on with running lights. Replaced resistors as they were falling apart, and replaced the entire tail light and it does the same thing.