[justalilbit]

I've got an E92 with FRM2. I'm looking into doing an LCI headlight retrofit. I have only done a little coding in my life so I'm far from adept at it. I had some questions.

1) I know I need an FRM3, though I'm not sure if it has to be a MAX Brose unit. What is the difference between MAX Brose and the other ones? (Such as E90 E91 LED Basis, E70, etc)

2) Can these be coded to work with my car if they are used?

3) Any pin differences with FRM2 and FRM3?

[matteblue3er]

Why are you under the impression that you need FRM3 to get LCI headlights/taillights toi work?

That is not true and you can get them to work on FRM2.

I've coded many cars for this retrofit. Some even on FRM1 cars.

[justalilbit]

Originally Posted by matteblue3er

Why are you under the impression that you need FRM3 to get LCI headlights/taillights toi work?

That is not true and you can get them to work on FRM2.

I've coded many cars for this retrofit. Some even on FRM1 cars.

I am by no means certain I need an FRM3, I'm only going off what those who did the retrofit said. (I probably shouldn't have worded my original post "I know I need FRM3") They claimed the LED light elements (corona rings/eyebrow/turn signal) won't work properly without an FRM3. (rings turn off after 10 seconds, don't light up in certain headlamp switch positions) Could you shine a bit more light on the process? I'd really appreciate it! There's almost no information on the coding process of E92 LCI headlight retrofit. (that I could find)

[justalilbit]

Alright, from a post about a user's E70 LCI headlight retrofit:

The FRM 2 puts out ~6 volts of pulse power(not clean voltage) this was not enough to turn the LED coronas, not even enough to drive a relay.
So I replaced the FRM 2 with the newest Footwell module FRM 3
61359287252.

Member TRIPL3_O CODING wrote my vin on the new FRM (coding) but even after that the new FRM was putting out between 12 and 13 volts but it was still Pulse power which did not turn on the coronas. At this point I could of use a relay if I want it to convert the pulse power to normal clean power but I didn't wanted to mess with a relay so we kept playing with coding and what really did the trick was we Changed the build date in the Vehicle Order to 04/2012 after that the FRM sends between 12 and 13 volts of clean + power.

The wiring is all the same except for one wire which is used to Dimm the coronas, I did not hook that up because I want the coronas to stay bright all the time.

If you want them to Dimm you can hook pin #7(empty at the moment) to pin #3 (HID low bean power) and your LEDs will Dimm when the headlights come on but that's your choice.
if you want to do this you need to order 2 pins to add to your current plug part # 61136901728

I assume the insufficient voltage was the reason for retrofitters claiming the need for an FRM3. Though I'm still wondering why it has to be a Max Brose module.

[China boy Ben]

FRM1，FRM2,FRM3,What do they mean? Many posts mentioned 1, 2 and 3, but I don't understand what it means.

分别是什么意思？看好多帖子都提到了1，2,3，但是不明白是什么意思。

[pmorg4]

This "pulse power" is actually pulse width modulation (PWM) which can be coded to create various effective voltage levels, or can be completely coded out for selected outputs such as for the angel eyes. You do not need an FRM3 for this, just someone who knows how to correctly code the FRM.