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Post by dv52 (Australia) on Apr 18, 2020 22:18:55 GMT
A group of very bright folk in another forum have been trying to understand how cars that are fitted with LCMs (Light Control Modules) might be programmed. The common intelligence of the group (mostly by others) has progressed to the stage where I would like to try a working hypothesis on an actual car.
So- if someone here has a vehicle that is fitted with LCMs and they are willing to participate in an experiment (which is no more complex than changing the setting in a single adaptation channel) to delete DRL wink - please advise
"DRL wink" is the lighting effect where the DRL dims/switches-off when the turn signal operates.
Cars that have LCMs will be fitted with 2 x modules like this: left-side module @ address hex29 (J1017) and right-side module @ address hex39 (J1018). Details will be something like:LCM_MLBevoH08 0014
Don
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Post by vwjap on Apr 19, 2020 11:03:52 GMT
Any good? |
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Post by dv52 (Australia) on Apr 19, 2020 23:00:13 GMT
Thanks John - looks good.
Please post-up the setting for the adaptation channel Light configuration in the Central electrics module @ address hex09.
The setting for this channel will look like a very-long code-string. To decode the data, I need to de-construct 244 x hex pairs. This will be my first attempt at applying a very new hypothesis. I will need to parse the data into a analysis tool (like MS excel, or MS Access) and then re-construct a bunch of new Leuchte-sets.
So, to make the process easier for my failing intellect and to minimize errors, I need to have the channel setting in digital form (rather than as a picture). Please don't alter the form of the data in any way (just a simple cut-and-paste from a back-up file)
Again, thanks for responding
Don
PS: for completeness, please confirm that the car has DRL wink.
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Post by vwjap on Apr 20, 2020 0:31:51 GMT
I’ll check the blink in the morning (as it’s 1.30 here) but not sure it blinks out of phase with the indicator, I thought the drl turned off while the indicator blinked then back on when indicator cancelled
0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000536001A0B0F7F0000000000000000000540001B0C0F7F0000000000000000000544004B46007F080A7F000000000000053A004946007F08097F00000000000000000000000000000000000000000000000000000000000000000000000000000A3800221200640000000000000000000A420023130064000000000000000000
This is from factory, never modified, with the \__\__. _/_/ LED DRL and 4 LED headlight, with HBA and cornering
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Post by dv52 (Australia) on Apr 20, 2020 2:06:58 GMT
I’ll check the blink in the morning (as it’s 1.30 here) but not sure it blinks out of phase with the indicator, I thought the drl turned off while the indicator blinked then back on when indicator cancelled 0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000536001A0B0F7F0000000000000000000540001B0C0F7F0000000000000000000544004B46007F080A7F000000000000053A004946007F08097F00000000000000000000000000000000000000000000000000000000000000000000000000000A3800221200640000000000000000000A420023130064000000000000000000 This is from factory, never modified, with the \__\__. _/_/ LED DRL and 4 LED headlight, with HBA and cornering John- Again thanks for participating Here's what the "new Hypothesis" says about your light configuration settings
Low Beam - Left
Lasttyp > 5-LED Abblendlicht
Lampendefektbitposition > 36
reserved >
Fehlerort mittleres Byte DTC_DFCC > 1A
Lichtfunktion A > Abblendlicht links
Lichtfunktion B > Lichthupe generell
Dimmwert AB > 127
Lichtansteuerung HD AB > maximum
Lichtfunktion C > nicht aktiv
Lichtfunktion D > nicht aktiv
Dimmwert CD > 0
Dimming Direction CD > maximum
Lichtfunktion E > nicht aktiv
Lichtfunktion F > nicht aktiv
Dimmwert EF > 0
Dimming Direction EF > maximum
Lichtfunktion G > nicht aktiv
Lichtfunktion H > nicht aktiv
Dimmwert GH > 0
Dimming Direction GH > maximum
Low Beam - Right
Lasttyp > 5-LED Abblendlicht
Lampendefektbitposition > 40
reserved >
Fehlerort mittleres Byte DTC_DFCC > 1B
Lichtfunktion A > Abblendlicht rechts
Lichtfunktion B > Lichthupe generell
Dimmwert AB > 127
Lichtansteuerung HD AB > maximum
Lichtfunktion C > nicht aktiv
Lichtfunktion D > nicht aktiv
Dimmwert CD > 0
Dimming Direction CD > maximum
Lichtfunktion E > nicht aktiv
Lichtfunktion F > nicht aktiv
Dimmwert EF > 0
Dimming Direction EF > maximum
Lichtfunktion G > nicht aktiv
Lichtfunktion H > nicht aktiv
Dimmwert GH > 0
Dimming Direction GH > maximum
Parking Lights -Left
Lasttyp > 5-LED Abblendlicht
Lampendefektbitposition > 44
reserved >
Fehlerort mittleres Byte DTC_DFCC > 4B
Lichtfunktion A > Versorgungsbedarf der LCM Module
Lichtfunktion B > nicht aktiv
Dimmwert AB > 127
Lichtansteuerung HD AB > maximum
Lichtfunktion C > Standlicht allgemein (Schlusslicht; Positionslicht; Begrenzungslicht)
Lichtfunktion D > Parklicht rechts
Dimmwert CD > 127
Dimming Direction CD > maximum
Lichtfunktion E > nicht aktiv
Lichtfunktion F > nicht aktiv
Dimmwert EF > 0
Dimming Direction EF > maximum
Lichtfunktion G > nicht aktiv
Lichtfunktion H > nicht aktiv
Dimmwert GH > 0
Dimming Direction GH > maximum
Parking Lights -Right
Lasttyp > 5-LED Abblendlicht
Lampendefektbitposition > 3A
reserved >
Fehlerort mittleres Byte DTC_DFCC > 49
Lichtfunktion A > Versorgungsbedarf der LCM Module
Lichtfunktion B > nicht aktiv
Dimmwert AB > 127
Lichtansteuerung HD AB > maximum
Lichtfunktion C > Standlicht allgemein (Schlusslicht; Positionslicht; Begrenzungslicht)
Lichtfunktion D > Parklicht links (beidseitiges Parklicht aktiviert li & re)
Dimmwert CD > 127
Dimming Direction CD > maximum
Lichtfunktion E > nicht aktiv
Lichtfunktion F > nicht aktiv
Dimmwert EF > 0
Dimming Direction EF > maximum
Lichtfunktion G > nicht aktiv
Lichtfunktion H > nicht aktiv
Dimmwert GH > 0
Dimming Direction GH > maximum
Fog/cornering Light - Left
Lasttyp > 10-allgemeine Scheinwerfer
Lampendefektbitposition > 38
reserved >
Fehlerort mittleres Byte DTC_DFCC > 22
Lichtfunktion A > Nebellicht links
Lichtfunktion B > nicht aktiv
Dimmwert AB > 100
Lichtansteuerung HD AB > maximum
Lichtfunktion C > nicht aktiv
Lichtfunktion D > nicht aktiv
Dimmwert CD > 0
Dimming Direction CD > maximum
Lichtfunktion E > nicht aktiv
Lichtfunktion F > nicht aktiv
Dimmwert EF > 0
Dimming Direction EF > maximum
Lichtfunktion G > nicht aktiv
Lichtfunktion H > nicht aktiv
Dimmwert GH > 0
Dimming Direction GH > maximum
Fog/cornering Light -Right
Lasttyp > 10-allgemeine Scheinwerfer
Lampendefektbitposition > 42
reserved >
Fehlerort mittleres Byte DTC_DFCC > 23
Lichtfunktion A > Nebellicht rechts
Lichtfunktion B > nicht aktiv
Dimmwert AB > 100
Lichtansteuerung HD AB > maximum
Lichtfunktion C > nicht aktiv
Lichtfunktion D > nicht aktiv
Dimmwert CD > 0
Dimming Direction CD > maximum
Lichtfunktion E > nicht aktiv
Lichtfunktion F > nicht aktiv
Dimmwert EF > 0
Dimming Direction EF > maximum
Lichtfunktion G > nicht aktiv
Lichtfunktion H > nicht aktiv
Dimmwert GH > 0
Dimming Direction GH > maximum
As you can see - there are only 6 x active Leuchte-sets and importantly the DRLs don't appear in the list. Can you confirm that the DRL Leuchte-sets on your car are NOT in the hex09 module -please
Don
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Post by vwjap on Apr 20, 2020 7:44:19 GMT
You mean this
Leuchte2SL VLB10:
Lasttyp 2:
not active
Lampendefektbitposition 2:
0
Fehlerort mittleres Byte DTC-DFCC 2:
0
Lichtfunktion A 2:
nicht aktiv
Lichtfunktion B 2:
nicht aktiv
Dimmwert AB 2:
0
Lichtansteuerung HD AB 2:
always
Lichtfunktion C 2:
nicht aktiv
Lichtfunktion D 2:
nicht aktiv
Dimmwert CD 2:
0
Dimming Direction CD 2:
maximize
Lichtfunktion E 2:
nicht aktiv
Lichtfunktion F 2:
nicht aktiv
Dimmwert EF 2:
0
Dimming Direction EF 2:
maximize
Lichtfunktion G 2:
nicht aktiv
Lichtfunktion H 2:
nicht aktiv
Dimmwert GH 2:
0
Dimming Direction GH 2:
maximize
Leuchte3SL VRB21:
Lasttyp 3:
not active
Lampendefektbitposition 3:
0
Fehlerort mittleres Byte DTC-DFCC 3:
0
Lichtfunktion A 3:
nicht aktiv
Lichtfunktion B 3:
nicht aktiv
Dimmwert AB 3:
0
Lichtansteuerung HD AB 3:
always
Lichtfunktion C 3:
nicht aktiv
Lichtfunktion D 3:
nicht aktiv
Dimmwert CD 3:
0
Dimming Direction CD 3:
maximize
Lichtfunktion E 3:
nicht aktiv
Lichtfunktion F 3:
nicht aktiv
Dimmwert EF 3:
0
Dimming Direction EF 3:
maximize
Lichtfunktion G 3:
nicht aktiv
Lichtfunktion H 3:
nicht aktiv
Dimmwert GH 3:
0
Dimming Direction GH 3:
maximize
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Post by vwjap on Apr 20, 2020 8:07:47 GMT
So the drl does in fact dim when you put the indicator on and it stays dim until the indicator cancels,
As a little side note tho, when the drl dims the first inch of the light at the grille end on the inner drl Is a little bit brighter than the rest, and this doesn’t do that on the outer drl
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Post by dv52 (Australia) on Apr 20, 2020 22:10:53 GMT
John: OK - yes the normal Leuchte-sets that you posted are clearly not activated and I can't find the correct code in the Light configuration channel for DRL wink. If the dim level for DRL Wink on your car is complete switch-off of lamp illumination, there should be hex9A in the string -yours doesn't have this.
The "new hypothesis" seems to work on cars without LCMs, but it appears to need further work on cars with LCMs
Many thanks again for your participation in my experiment -very much appreciated!
Don
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Post by vwjap on Apr 20, 2020 23:01:59 GMT
No probs dude, anything else you need just ask
i did look in the LCM’s earlier but there was no codings in them, but that was with IOS, and that doesn’t seem as reliable as the android setup, so I’ll maybe dig out the old tablet and dongle and see if that reads different if you want
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Post by dv52 (Australia) on Apr 21, 2020 0:52:02 GMT
No probs dude, anything else you need just ask i did look in the LCM’s earlier but there was no codings in them, but that was with IOS, and that doesn’t seem as reliable as the android setup, so I’ll maybe dig out the old tablet and dongle and see if that reads different if you want John: yes, you are correct - LCMs have no coding. This fact was the genesis for the work on trying to understand how LCMs operate; how do LCMs cater for the different lighting effects in various models? The obvious answer is that the lighting effects are programmed into the LCM firmware - but as is the case when Leuchte-sets in the BCM are active, there may be a link to the light configuration channel.
As you will probably already know - there is a "back-door" way to program BCM Leuchte-sets by changing the Byte values in the light configuration channel. If you look at my analysis of your very long code-string - the programming for 6 of the headlight fitting lamps that the LCM controls is obvious. So at least I have confirmed (with your kind assistance) that LCM coding is reflected in the BCM light configuration channel. Next step is to discover whether changing a Byte value in the light configuration channel will change the internal coding in the LCM - I don't know
But why can't I see the DRL wink facility in the very long code string?  - bummer!!
Don
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Post by alltrack18 on Apr 21, 2020 6:55:29 GMT
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Post by dv52 (Australia) on Apr 21, 2020 23:25:13 GMT
^^^alltrack: your English is much better than my Polish - but I'm a bit confused! Leuchte-7 on your car looks exactly the same as VWjap (see my findings). The code-string from the light configuration channel has an odd "30064" sequence repeated a number of times which wasn't in vwjap's car. I don't think this would create a problem.
Don
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Post by lovic87 on Apr 26, 2020 21:27:37 GMT
A group of very bright folk in another forum have been trying to understand how cars that are fitted with LCMs (Light Control Modules) might be programmed. The common intelligence of the group (mostly by others) has progressed to the stage where I would like to try a working hypothesis on an actual car.
So- if someone here has a vehicle that is fitted with LCMs and they are willing to participate in an experiment (which is no more complex than changing the setting in a single adaptation channel) to delete DRL wink - please advise
"DRL wink" is the lighting effect where the DRL dims/switches-off when the turn signal operates.
Cars that have LCMs will be fitted with 2 x modules like this: left-side module @ address hex29 (J1017) and right-side module @ address hex39 (J1018). Details will be something like:LCM_MLBevoH08 0014
Don
If you want a NAR vehicle Id be happy to lend my assistance, I dont remember the exact details but when you posted this I did check and my modules were similar to what you posted and to vwjap's info Edit: screenshots added ![]() Attachments:
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Post by nobeac on Feb 6, 2022 5:11:40 GMT
Wow all that coding looks like a bunch of rocket science to me, and I wanted to get some new headlight assemblies w/a DRL in them and make it so it turns off w/the turn signal. Just to make it look cool in my 04 Honda accord. Thought all this would be on the board itself but apparently there's a bunch of programming involved or something.
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Post by dv52 (Australia) on Feb 6, 2022 9:41:48 GMT
nobeac : haha........ yes, I suspect that it does look a bit like rocket science if you haven't been involved in the development work!!
But in truth, it ain't that complicated if you have a basic understanding of Leuchte-programming.
I don't understand how a "94 Honda accord" fits into the picture. This thread ONLY applies to lighting on MQB platform vehicles - like the Golf mk7. And it ONLY applies if the vehicle is fitted with LCMs
Don
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Post by microsoftsam on Jun 14, 2023 13:29:19 GMT
Did you figure out how to change the DRL behavior on cars with LCM ?
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Post by dv52 (Australia) on Jun 14, 2023 21:57:50 GMT
As I said in my first post - a bunch of members on the Ross-Tech forum members (including me) investigated this matter. We went as for as we could (read the dialogue HERE) - but unfortunately we were unable to find a solution.
Based on the work undertaken - we did confirm that the value of the hex string on the Light Configuration channel in the central electrics module is indeed coded for the way that the LCM is factory programmed - because it varies in-line with the different lighting functions on various headlight fittings.
However, and again based on my attempts to modify the adaptation channel - my hunch (guess really) is that the factory setting of this channel is a result of the LCM programming, rather than the value in this channel being an input to the LCM operation ( i.e. the channel is non-causative)!!
Don
PS: I no longer participate on the Ross-Tech forum because of Uwe Ross's ultra right wing stance on gun control (Of course Uwe has every right to hold and express his views on the Ross-Tech forum - but he won't allow the expression of contradictory views on the forum !!)
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- bummer!!
