NO, I HAVEN'T changed anything in there. I see bit 5 is 1 and bit 6 is 0, what value do I set them?
BOFH: Here's a pic of the long coding helper screen from my car showing the coding for byte 6 for the BCM
As I said in my previous post, I don't have Xenon/shutters in my car and you can see the entry in Bit5-6 confirms this setting. To establish what the coding value should be for cars that have shutters installed, I enclose the table below which shows the coding stings from a number of models. All the cars in the table (except mine) have xenon/shutters installed. In the lower part of the table, I have converted to binary the Hex value for Byte 6. Clearly the correct value for cars with Xenon/shutters is Bit 5=I & bit 6=0
So, I played around with those bits.... and I screwed up. I ended up leaving them programmed at bit5=0 and bit 6=1 ; the opposite of what was initially programmed. Imagine my surprise when I was driving tonight on a very dark highway with my xenons on with FLA activated, and my xenons
TURNED OFF in the darkest patch of the road I had to turn the light switch to manually turn on my lights again. In fact, when the FLA was switching to high beams, it turned off the xenon bulbs. Nasty side effect
On another note, my colleague just got the new Passat, also on the MQB platform, and also a TDI with Xenon headlights. I asked him to flash me while his low beams were off, and sure enough, his shutters are moving.
I've started to roll back my most obvious VCDS tweaks, and i'll get the garage to look at it
Again, thanks for all the time you took to share your findings on the BCM, it is indeed a fascinating way to manage the lights on that vehicle. I wonder how the actual electronics of that BCM light driver looks like; can it switch between the different types of load on-the-fly, or does it merely drive an open collector which is then hooked to the specific driver on each port at build time? (constant current driver for LEDs, ballast for HID/xenons, triac/FET for halogens...)... I wish I could tear it down to see how they engineered it
Oh, and regarding Lane Assist, I love it too and use it all the time. Actually, to me it feels like it's turning the wheel for me, i just have to keep my hands on it. There is a green/orange LED on the dashboard, so you know if it's engaged; sometimes I try to release the wheel and I am amazed at how it drives by itself for a few seconds. Sure enough, after ~10 seconds, it turns off while beeping angrily. I haven't tried for longer, but it might as well drive you in the oncoming traffic to punish you for playing with it
PS, here is my BCM admap, i figured it'd be annoying for the others to see 2300 lines of pasted data, so I uploaded it here :
https://gofile.me/25l2Z/E65fQiQ3 . If you want, you can include it to your compilation, let me know if you need some more details; it's a 1.6 TDI with Lane Assist and bi-xenons, in Belgium.