, it was time for a breath of fresh air for my beloved 6R in the form of LED lighting and headlight refresh.My 6R started life as a standard Trendline MY 2014, so it has standard headlights (each headlight housing accommodates: one H4 halogen, one w5w parking, one py21w indicator, product # are 6R1941015E, 6R1941016E).
I installed :
1)LED boot light
2)42mm LED cabin roof light,
3)LED license plate lights
4)w5w LED parking lights,
5)py21 LED reverse light
6)H4 LED bulbs (proper Philips Ultinon gen 2, excellent die and mirror shape just like a filament bulb, same pattern through the reflector housing as the halogens, no light "flooding", so no dazzling whatsoever, check the legality where you live though)
Brake bulbs remain the same old incandescent type, indicators remain the same too.
The w5w parking, py21 reverse, 42mm cabin lights, are supposed to be CAN compatible.
The Philips Ultinon gen 2, are not CAN compatible by default, so i bought philips resistors for them. The resistors reduced light intensity by at least 30% i would say, and got pretty hot, so i removed them. I hate resistors getting hot sucking amperage and being a hazard anyway.
So, here is the problem.
All that leaves me with a fresh looking car, with great/civilized headlight performance, safer at night, BUT.. ..with a pretty, orange bulb-out warning in the instrument cluster that intermittently comes on.
I have already browsed the forum for similar threads trying to gain more knowledge, i am familiar with cold bulb-checks, hot bulb-checks, possibility of solving this only through the eeprom, maybe messing with byte 18 values or similar, but have not come across a solid conclusion.
Here is some info of the Central Electrics module. An autoscan returned no errors, even when the dashboard warning light was ON.
Coding: 72B82B3F28A10000002808003D6B9CD80000410F60060040200000000000
BCM is not stock, changed in order to fit a MFSW. It is H+4, 6R0937087AB year 2015+
Here's a link with some more pictures of each byte's individual settings (that seems relevant to the lighting system):
https://imgur.com/a/6ZQJQRs
Is it possible to adapt the BCM to the new LED lights so that the dashboard light goes away, but still retain the ability to be informed when a bulb actually burns out?
or
In order to have any LED bulbs installed, the only way is to remove/code-out the bulb-checking completely?
Is any of this possible through VCDS? Long coding? Adaptation?
LEDs are: H4 , front parking lights, reverse light, cabin roof light, boot light, license plate lights. Everything else incandescent.
I would really appreciate your help about this.
I hope we can consolidate all available info about this matter on this thread and, perhaps, make it a guide for future reference, since cosmetic LED upgrades seem to be getting a lot more popular these days, and any info about doing the installation properly is scattered.
Again, thanks for your help guys.