|
|
Post by Dampson on Oct 2, 2022 1:03:35 GMT
Hi. I have a problem with the headlamps on my 7.5 US. Currently, the car is in the EU, so I decided to replace the lamps with European ones. Everything works after replacement. But when I turn on the turn signal, the DRL stops lighting and an error pops up
(8D716 - LCM links - standlicht defect [data bus] for the left lamp)
And
(8D816 - LCM rechts [the rest as in the previous lamp]
After the usual removal of errors, the DRL works again until the turn signal is turned on again Has anyone had such a problem and knows what to change in the coding?
|
|
|
|
Post by dv52 (Australia) on Oct 2, 2022 22:15:55 GMT
What exactly do you mean by "I decided to replace the lamps with European ones" - did you just replace "the lamps", or did you replace the entire headlights? And if the latter, was this all that you replaced?
The reason for my questions is that your error message contains reference to "LCM". This strongly suggests that your mk7.5 uses Light Control Modules to operate the headlights, rather than the usual central electrics module @ address hex09, or the range control module @ hex55
Check the scan report for this car and you should find 2 x modules similar to this:
- left-side module @ address hex29 (J1017), and
- right-side module @ address hex39 (J1018)
Details of these modules will be something like "LCM_MLBevoH08 0014" - but may be different
So - here's the thing about LCMs - OBD11 can't access coding changes to these modules
Don |
|
|
|
Post by Dampson on Oct 3, 2022 8:00:28 GMT
You are right I did not specify exactly. I replaced the headlights, but the modules in the lamps were left with those from the USA lamps. So exactly 29/39 and D6 and D7. I have the whole Cod_Anp made by Odis E. I can also provide for verification what may be wrong. Unless it is enough to do flash 29/39 for the European version.
|
|
|
|
Post by dv52 (Australia) on Oct 3, 2022 21:26:32 GMT
hmm.... I'm only guessing based on the limited information provided - but it does seem that there is a basic incompatibility with the new headlights and the remaining modules that were factory installed. I don't have access to ETKA to determine the correct part numbers for the LCMs for Europe vs USA - maybe a visit to a parts department of a local dealer might be useful?
Don
|
|
|
|
Post by Dampson on Oct 3, 2022 21:57:59 GMT
Left lamp: 5G1941059
Right lamp: 5G1941078
7P5941572A
8V0907399D
These are the parts that are currently installed in the car. I asked the dealer if these lamps would fit, they replied that they had the same PR number (8IX), so they should match. Unfortunately, this is where the dealer's help ended, and they do not undertake such projects. Today I tried to upload flash via VCP to all four modules, but unfortunately it ended with broken headlights and the need to restore the original parameterization (SVM Online)
|
|
|
|
Post by dv52 (Australia) on Oct 3, 2022 23:01:12 GMT
As I said, I don't have a subscription to ETKA (or to partslink24) - I can't justify the expense!! So, I can't help with compatibility of the almost limitless lighting components available across world markets !!
|
|
|
|
Post by Dampson on Oct 4, 2022 5:45:08 GMT
Below I will live a screen from the ETKA screen, of course on subscription to display exactly the elements on which the car left the factory. The first photo shows the full original of my car, and the second photo shows the modules on the car from which the current lamps were installed. They are completely identical. PR code: AV0 as well as AV1 and AV2 prove that there is right-hand traffic everywhere.    |
|
|
|
Post by dv52 (Australia) on Oct 4, 2022 22:10:38 GMT
hmm........interesting!!
OK, thus far I have accepted your link between the the impact of turn-signal function on the DRLs and the faults on this car. But given what you have found - maybe the way forward here is to go back to the beginning!!
On your first post, you say "when I turn on the turn signal, the DRL stops lighting and an error pops up" Does the "DRL stop" only on the car-side for the turn-signal? If so, rather than being a part of the fault - the first part of your statement (i.e. "when I turn on the turn signal, the DRL stops lighting") sounds very much like what's called "DRL-wink".
DRL-wink is a common feature on MQB platform cars and the designed lighting feature is intended to make sure that the DRL does not compete with the turn-signal lamp (i.e. the driver's intention to turn is emphasized to other cars if the DRL is deliberately switched-off).
If this car used the central electrics module (and not LCMs) to control the headlights, the DRL-wink function could be confirmed by looking at the Leuchte-sets. However, the LCM controls lighting on this car - so access to the module isn't possible!! But as I said, DRL-wink is very common - hence it's very, very likely to be programmed into your LCM.
So- what's causing the 8D716/8D816 errors? Well........ if we abandon the link between the turn-signal/DRL function and the error messages and we re-look at the error descriptor (i.e. standlicht defect [data bus] for the left/right lamp) - the word "standlicht" more accurately means "Parking Light" (PL).
What happens when the Parking lights are turned-ON (both when the PL position is selected on the rotary light switch and when the low-beams are switched-ON?
Please confirm the statement in your first post that the error messages ONLY appear when the turn-signal function is operated
Has there been any coding changes made to other modules on this car as part of the headlight retrofit (i.e. the central electrics module- perhaps)?
Were there any errors on the car prior to retrofitting the new headlights?
Does this car have incandescent tail-light fittings?
Also, please post-up a copy of the scan report (as an attachment) - it will show what the other lighting equipment is installed on the car
Don
|
|
|
|
Post by Dampson on Oct 5, 2022 5:09:43 GMT
Attached I am sending the match list from BCM 09. In addition, I am attaching information from the other lamp modules. I will try to make a scan of the whole car in English, because currently it is all in my native language and it will not be understood for sure;) I would like to add that I tried to do the parameterization via VCP and after the parameterization with the following files, the lights completely stopped shining, and it was necessary to restore the parameterization to the original one via Online SVM.      |
|
|
|
Post by dv52 (Australia) on Oct 5, 2022 20:56:08 GMT
hmm.......I'm not sure what part of my last post was confusing - so I'll ask again: What happens when the Parking lights are turned-ON (both when the PL position is selected on the rotary light switch and when the low-beams are switched-ON? Please confirm the statement in your first post that the error messages ONLY appear when the turn-signal function is operated
Has there been any coding changes made to other modules on this car as part of the headlight retrofit (i.e. the central electrics module- perhaps)? Were there any errors on the car prior to retrofitting the new headlights? Does this car have incandescent tail-light fittings?
Also, please post-up a copy of the scan report (as an attachment) - it will show what the other lighting equipment is installed on the car |
|
|
|
Post by Dampson on Oct 6, 2022 4:42:48 GMT
Coding on the headlamps has not been done. The only thing that has been coded is the rear fog light and the separation of the direction from the stop (European requirement), the lamps at the rear are in the top version with a dynamic indicator. So now I will explain how it is with the front. When I remove the errors, the DRL is on, and it will be on to turn on the turn signal. For example, when I turn on the left turn signal and it finishes its work, then the DRL does not work, and an error pops up in the computer. The right DRL still works because I used the left turn signal before. If he uses the right turn signal then the right DRL will stop working after his work is finished. Works the same on any light switch knob option. The best thing is that if I put on original lamps from the USA, there is no problem ... everything shines beautifully. However, I want the car to look fully European, i.e. without marker lights.
|
|
|
|
Post by dv52 (Australia) on Oct 6, 2022 22:39:46 GMT
Arrhh......... that's better - now I understand what's happening (thank you)!! So, what you describe is classic DRL-wink behavior. I assume that you are familiar with this function. Do the old (USA) headlights use DRL-wink?
I'm guessing (again) but it seems that the new lights are not operating DRL-wink properly - maybe?
- If the USA headlights use DRL-wink and if on the new headlights, the DRL is still illuminated while the turn-signal is operating, then maybe there is a disconnect between the new headlight and the old LCM programming?
- If the USA headlights do not use DRL-wink and if the new headlights are expecting DRL wink, then maybe the problem is how the new headlights are exiting the DRL-wink period?
For the marker-light (also called "Parking light") problem - have you tried changing the value of Daytime running lights-Standlicht aktiviert zusaetzlich Tagfahrlicht on the hex09 module?
Standlicht aktiviert zusaetzlich Tagfahrlicht = Parking light also activates daytime running lights. On NAR model mk7/mk7.5, the default value for this channel is active whereas RoW/EU models have the factory setting not active
Don
|
|
|
|
Post by jordan04 on Oct 17, 2022 16:49:14 GMT
Hello,
Did you solve your problem Dampson?
I have the same problem for a customer's car, I will try the DV52 solution tomorrow.
|
|
|
|
Post by jordan04 on Oct 18, 2022 7:48:13 GMT
I just looked for mine, I can't find "Daytime running lights-Standlicht aktiviert zusaetzlich Tagfahrlicht"
|
|
|
|
Post by jordan04 on Oct 18, 2022 8:12:53 GMT
Can you tell me where to find " Daytime running lights-Standlicht aktiviert zusaetzlich Tagfahrlicht " in module 9?
Thanks
|
|
|
|
Post by Dampson on Nov 14, 2022 14:24:28 GMT
The problem was solved with the help of one of my friends who also deals with car electronics. He did it and asked me not to share his actions. (It's his way of life and he makes money from it.) I can only leave contact to him if anyone is interested in solving the problem.  |
|
