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.

 

[salvatore_calzone]

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

 

[qukquk]

Hey

I am trying to retrofit the led headlight and test out on workbench.

5GM 941 077A
Exist Pin
Pin 1
Pin 2
Pin 4 -->GND (tested and lit low beam)
Pin 6 -->12V 3a (tested and lit low beam)
Pin 8
Pin 11
Pin 13 --> T73a/72 (Left tail light 2 -MX5- Rear left fog light bulb -L46-) *according to the manual.

Does anyone know if it's mandatory to join the PIN13 to T73a/72? it looks like none sense to me because my car is NAR, no rear Fog light. * The manual say it's start from January 2019.

Thanks

 

[DV52]

@qukquk : Hi.

Far be it for an Antipodean to give advice to someone from the land of the God King about NAR headlights - but doesn't pin #13 on the 14 x pin headlight connector for a Golf mk7.5 from your country feed the front side-marker bulb (M33 & M34 in the NAR wiring diagram)?

As I understand, BCM pin T73a /72 does NOT connect to the rear fog-light on Yankee tail-lights because NAR models don't have factory rear fog-lights.

If your instruction says connect pin #13 to T73a /72 - then there shouldn't be a factory wire already terminated to the BCM pin and my hunch is that the instructions will code Leuchte26NSL LA72 to operate as a side-marker lamp (likely the one Leuchte-set will drive the side-marker lamps on both the left and right headlight fittings)

Don

 

[ZERO815]

As Don mentioned, T73a/72 is used for the front amber side markers on NA MK7.5 GTIs.

 

[qukquk]

HI Don/ZERO815

thanks for the reply, that really helps, can you take a look my version of T10 to T14?

The original post indicate Pin1/T10 to Pin13/T14, but checked the manual,it should be Pin10/T10 to P13/T14?

And that's the case, could i use the Pin1/T10 for Pin8/T14? not sure if 15a is equal to KL15a? it looks like very challenging to add fuse XD.

Thanks

Santi

My version of T10 to T14

 

[DV52]

HI Don/ZERO815

thanks for the reply, that really helps, can you take a look my version of T10 to T14?

The original post indicate Pin1/T10 to Pin13/T14, but checked the manual,it should be Pin10/T10 to P13/T14?

And that's the case, could i use the Pin1/T10 for Pin8/T14? not sure if 15a is equal to KL15a? it looks like very challenging to add fuse XD.

Thanks

Santi

Santi: Hmm................ I'm not sure how your LED headlights are meant to work and maybe my confusion is because I happen to live on an island near Antarctica - where water flows in the opposite direction down a drain!

However, below is my understanding of how the OEM headlight connectors on Golf mk7.5s for North America Region (NAR) models are terminated. I also include for reference a picture of the pin-out for the BCM.

In regard to "it should be Pin10/T10 to P13/T14" - yes!

For your question "15a is equal to KL15a" - KL means Klemme = Terminal/Clamp. So, "15a" is really "Terminal 15", or "T15" - which is the same as "KL 15a". These are terms that are defined in the industry Standard DIN72552 - look it up, it's a really good read and you will find the other terms in your table in the document like "KL49" & "KL56a".

But I don't understand why you propose "i use Pin1/T10 for Pin8/T14"! Pin8/14 is used on OEM headlights for the DRL signal when the headlight fittings do NOT have DRL Modules. I'm happy to be corrected - but AFAIK where the DRL Module is present - Pin8/14 is NOT used . Is pin #8 on the 14 x pin connector on your physical headlight fittings populated with an actual wire and do the fittings have DRL modules?

For the 15a power supply (which is a switched +12Volt supply with ignition-ON) - the connection is Pin1/T10 to Pin4/T14 - I think!

Don

 

[qukquk]

Santi: Hmm................ I'm not sure how your LED headlights are meant to work and maybe my confusion is because I happen to live on an island near Antarctica - where water flows in the opposite direction down a drain!

However, below is my understanding of how the OEM headlight connectors on Golf mk7.5s for North America Region (NAR) models are terminated. I also include for reference a picture of the pin-out for the BCM.

In regard to "it should be Pin10/T10 to P13/T14" - yes!

For your question "15a is equal to KL15a" - KL means Klemme = Terminal/Clamp. So, "15a" is really "Terminal 15", or "T15" - which is the same as "KL 15a". These are terms that are defined in the industry Standard DIN72552 - look it up, it's a really good read and you will find the other terms in your table in the document like "KL49" & "KL56a".

But I don't understand why you propose "i use Pin1/T10 for Pin8/T14"! Pin8/14 is used on OEM headlights for the DRL signal when the headlight fittings do NOT have DRL Modules. I'm happy to be corrected - but AFAIK where the DRL Module is present - Pin8/14 is NOT used . Is pin #8 on the 14 x pin connector on your physical headlight fittings populated with an actual wire and do the fittings have DRL modules?

For the 15a power supply (which is a switched +12Volt supply with ignition-ON) - the connection is Pin1/T10 to Pin4/T14 - I think!

Don

Don thanks for the reply, had the opportunity today to try out the Pin10/T10 to Pin13/T14 after making my baby girl to sleep XD; confirmed that's for the side marker as you and ZERO815 state.

Wondering the orignal Post from AWD4416 is using PIn1/T10 to PIn13/T14, should make the side marker lit everytime turn on igntion? or he did coding adaption to change the behavior of Pin1?


Surfing on different forum, the Pin8 needs go to SC36/37 (always on), which give the turn signal flash when unlock or lock the door, i believe it's controled by the modules installed in headlight itself.

I were planning to sue Pin1/T10 to Pin8/T14, because i am lazy to add fuse and it's pain of ass to asset the back of interior fuse box.

But it looks like, no way around, need to add them from the back of fuse box, or using the fuse tap.


The led headlight I am trying to retrofit is 8IU, unfortunally here in US, we only got this option, not like EU 8IX.

Update

 

[DV52]

Wondering the orignal Post from AWD4416 is using PIn1/T10 to PIn13/T14, should make the side marker lit every-time turn on ignition? or he did coding adaption to change the behavior of Pin1?

Hmm........I never cease to be amazed by the different ways that folk want to modify the operation of factory headlights! Why would you want the side-marker lamps to turn-ON with the ignition-ON?

Think about how the engineers on the VW mother-ship designed the side-maker luminaire (meaning the lamp and reflector for the side-marker function) on your headlights.

As factory designed, the side-marker lamps are connected to BCM pin B39 (see my table) and as factory coded - these lamp are ONLY illuminated when the car's Public-Lights/Position-lights (PL) are active (and for single-side PL)

Public-lights/Position-lights (PL) are normally used at night-time - so the actual wattage of the lamps and the configuration of the reflectors are specifically designed to not blind on-coming traffic after-dark. This means that side-marker lights will be ineffective if illuminated during daylight - because they will be competing with the sun!!

So I'm baffled why you (or AWD4416) would want to do such a thing when almost certainly the lighting-effect will be un-noticed by on-coming cars and it won't benefit the driver during daylight!! The side-marker lights are no-where near the wattage of the DRLs -which ARE specifically designed for illumination during daylight!!

But as a response to your specific question: Yes, "PIn1/T10 to PIn13/T14, should make the side marker lit every-time turn on ignition". And NO, no further coding is needed
Don

 

[amd is the best]

Thanks for your help, I have the 8IX ones by the look of it fitted to my car, was trying to weigh up the cost of upgrading to the 8IU ones.

If anyone is interested here are the part numbers for the whole set for the Euro ones, my ETKA doesn't support US I'm afraid!

	Left	Right
8IT (Basic LED)
RHD	5G1 941 773	5G1 941 774
LHD	5G2 941 773	5G2 941 774
RHD GTI	5G1 941 773 A	5G1 941 774 A
LHD GTI	5G2 941 773 A	5G2 941 774 A
RHD GTE	5G1 941 773 B	5G1 941 774 B
LHD GTE	5G2 941 773 B	5G2 941 774 B
8IX (Dynamic cornering light)
RHD	5G1 941 077	5G1 941 078
LHD	5G2 941 077	5G2 941 078
RHD GTI	5G1 941 077 A	5G1 941 078 A
LHD GTI	5G2 941 077 A	5G2 941 078 A
RHD GTE	5G1 941 077 B	5G1 941 078 B
LHD GTE	5G2 941 077 B	5G2 941 078 B
RHD R	5G1 941 077 C	5G1 941 078 C
LHD R	5G2 941 077 C	5G2 941 078 C
8IU (Full dynamic lights)
RHD	5G1 941 113	5G1 941 114
LHD	5G2 941 113	5G2 941 114
RHD GTI	5G1 941 113 A	5G1 941 114 A
LHD GTI	5G2 941 113 A	5G2 941 114 A
RHD GTE	5G1 941 113 B	5G1 941 114 B
LHD GTE	5G2 941 113 B	5G2 941 114 B
RHD R	5G1 941 113 C	5G1 941 114 C
LHD R	5G2 941 113 C	5G2 941 114 C

I wanted to reply to this so no one ends up ordering the wrong lights.

5G1 is right hand traffic, not right hand drive.
5G2 is left hand traffic, not left hand drive.

Etka part screenshot attached.

https://upload.wikimedia.org/wikipedia/commons/3/32/Countries_driving_on_the_left_or_right.svg

Also, I'm in the midst of upgrading my 2019 Altrack SEL's 8IX units to GTE 8IU units. Has anyone retrofit the 8IU's in here? I assume some coding things will be different than what's been kindly documented here. Let me know if anyone has any insight. I'm working on a way to flash my modules to the 8UI files that have been shared here since I've made all the listed changed here and only the inner LED's are producing light at the moment.

Pic for fun:

http://imgur.com/a/y4HcHzF

 

[salvatore_calzone]

@amd is the best I retrofitted to 8IU on my GTI, I didn’t keep a record of the exact changes unfortunately, but hope this bit of info helps. flashing the .frf files and the 4B module’s dataset is the most important part (I used VCTool).

the rest of the coding is changing a few places where it’s currently set to “high beam assist” to “dynamic light assist”. off the top of my head there’s some in module 09 and A5. does your Alltrack have the camera (for lane assist)?you also have to change some stuff in 4B like market = ece instead of nar.

I also was getting a weird fault I hadn’t seen written about - only when holding the stalk to “flash to pass”. had to change one value in Leuchte6 and Leuchte7 in module 09.