MK7.5 OEM LED Headlights Retrofit

[Headlights]

My bad about the 3Q0/5Q0 matter - I've re-looked at your SCAN and I now don't believe this is a problem!

Since you have confirmed that DRLs are working properly - I suspect the error is due to the fact that the central electrics module still thinks that it controls the original halogen DRLs. Have you disabled the factory Leuchte-sets for the DRLs? And have you done the same for ALL of the other halogen headlight lamps?

This matter goes to the more general question regarding what actual changes were made to the 09 module coding? Meaning how did you tell the 09 module that it should no longer control the factory halogen fittings and instead, pass control to the new J745 (and subsequently to 29/39 modules & D6/D7 modules via the newly installed Extended CAN bus)? Maybe post-up a list of your 09 module coding changes for this project?

I can't comment about the 10 x pin/14 x pin splicing/pinning. I too assume that this was done properly!!

Don

That's a good point. So you think that maybe since I have not changed anything for central electronics or disabled the factory Leuchte-sets that I am not getting the proper voltage / the current codes I have that are not clearing? The only reason I did not think of that is because I was following step by step AWD4416's instructions. He was able to clear all the error codes before he touched central electronics. Do you think that could be the actual issue? I can give it a shot at some point in the following week, but I am just a bit confused on how he did not have the same issues I am having. AWD4416's instructions are as follows:

• When 4B is coded, clear all errors on 29, 39, D6, and D7. Clear errors on 4B, headlight basic settings should still be an error.
• Perform headlight basic settings.
• There should be no faults on 4B at this point.
• Make changes to 09

As I said above, I thought that once I had the correct firmware / software / data sheet modules and made the changes to my gateway, and 4b then I would mess with central electronics.

 

[DV52]

That's a good point. So you think that maybe since I have not changed anything for central electronics or disabled the factory Leuchte-sets that I am not getting the proper voltage / the current codes I have that are not clearing? The only reason I did not think of that is because I was following step by step AWD4416's instructions. He was able to clear all the error codes before he touched central electronics. Do you think that could be the actual issue? I can give it a shot at some point in the following week, but I am just a bit confused on how he did not have the same issues I am having. AWD4416's instructions are as follows:

• When 4B is coded, clear all errors on 29, 39, D6, and D7. Clear errors on 4B, headlight basic settings should still be an error.
• Perform headlight basic settings.
• There should be no faults on 4B at this point.
• Make changes to 09

As I said above, I thought that once I had the correct firmware / software / data sheet modules and made the changes to my gateway, and 4b then I would mess with central electronics.

I'm really not sure what sequence of steps @AWD4416 used - but I do know that this retrofit project is not trivial, so including very minute step into a post in exactly the correct sequence is very difficult (if not impossible!!).

Without any offense intended to @AWD4416 - for the 09 changes, my approach would be different because notwithstanding that the new J745 module takes-over the operation of the headlights - the central electrics module still manages some of these functions. And more importantly, the central electrics module is NOT designed to operate 2 x different headlight types at the same time - which will happen if the 09 coding changes are left as the last step in this project.

I guess it's OK to leave the disablement of the Leuchte-sets as a final step - but at the very least, I suspect that you need to tell the central electrics module to start operating stuff like AFS, (Advanced Front-lighting System) and FLA (Main beam assist) and whatever other lighting functions were NOT factory installed on this car before the new modules were fitted and are needed to make the LED headlights work

PLUS - I'm wary of identifying a single cause for the problems in your SCAN report - my hunch is that there might be multiple issues that need fixing, maybe

Don

 

[Meesters]

Great guide! Thanks for all the effort! This guide makes it actually "easy" doable. My compliments for all the research. All parts (second hands) came in, and I'm going to do this retrofit tomorrow. Hopefully nothing wrong with the parts. Rear sensor already installed, but it didn't work at first, it turned out that the Ali wire was pinned wrong in 4 pin connector for sensor

Chris

 

[Meesters]

Done, Yesterday. Beside a few small stupid mistakes, and a wrong 29/39 module what needed to be replaced, everything went smooth.

I just turned off the lights with the rotary switch before coding 09, that seems the most logic to me. Does anyone played with coding and recommend something I should try?

I bought modules 29/39(8V0907399D) and D6/D7(7P5941572A) separately. To my surprise they know what HEX they are if installed in left or right headlight unit, without flashing dataset and having faults, and they function how they should. I flashed datasets anyway(of course).

Today I had them leveled at the garage. Now the coming time I'm going to try out my new toy.

@AWD4416, Thanks again for all the effort.

 

[2018gti]

Hey 2018gti and anyone else who can help,

I got a couple of questions for you about your retrofit since it seems that you had some of the same issues that I am having. I read through this whole forum but I couldn’t find the exact information I was looking for.

Just to note I have a VCP with an active subscription, and all my modules, to my knowledge, have the correct software and firmware

• We’re you ever able to find how to change the head lamp variant under the headlamp modules? Mine currently said e076 and e077.
• How did you clear the “high beam implausible” error for D6 and D7? Does that have to do with the headlamp variant?

I have some more questions, but they are less directed at 2018gti directly.

• For my control modules 29 and 39 I have 3 errors:

1. data set implausible
2. Supply voltage too low
   • I am confused by this one since I checked the voltage and it is getting 12 volts
   • Because of this low voltage I cannot flash firmware
3. Terminal 15 implausible signal

• My last question has to do with the correct flash files which I downloaded from VCP, I just want to make sure I was using the correct ones.
  • 7P5941572A_golfE_ D6_left 8IU_STANDARD flash
  • 7P5941572A_golfE_D7_right_8IU_STANDARD.flash
  • 8V0907399D_BIU_STANDARD_LCM_29.flash (if I could flash but voltage error)
  • 8V0907399D_BIU_STANDARD_LCM_39.flash (if I could flash but voltage error)
  • 4B I did not flash yet since I got it directly from a 2019 GTI

Any and all help on these issues would be appreciated! Everything up until this part has gone very smooth. I made this account and post in a rush (clearly with my username haha) so let me know if i need to provide some more info for people.

@Headlights did you end up getting this figured out? I didn’t even see your post, sorry about that.

I used VCTool and a combination of flash files/datasets which were posted by someone on drive2 and also a post by Ivan here on the forum. since I was going from LED to LED the process was a bit different.

I actually had an interesting issue where I would get an AFS error and open circuit fault in central electronics for as long as I would hold the high beams on. as soon as I let go of the stalk the error would go away. I fixed this by changing some Leuchte values, it seems that “flash to pass” is electrically a bit different with the DLA lights.

I really should do a full write up of upgrading stock LEDs to DLAs.

 

[Meesters]

Hey @Headlights, or whoever.

I have some more questions, but they are less directed at 2018gti directly.

• For my control modules 29 and 39 I have 3 errors:

1. data set implausible
2. Supply voltage too low
   • I am confused by this one since I checked the voltage and it is getting 12 volts
   • Because of this low voltage I cannot flash firmware
3. Terminal 15 im

I didn't really look in to your problem, because I was doing this retrofit myself. I have seen those faults also. It is because of coding HEX 09. Especially Leuchte6 to Leuchte9. That way you code 09 as power-supply for the headlights and they will work properly, after you can clear faults and flash. Of course do all coding.

Flash files can be found here, Login is guest/guest. Under folder D6 you find D6/29/39 and folder D7, D7

If not already sorted this will help hopefully.

Chris