Retrofit MK7.5 LED Tail Lights

[elcabe22]

HI Guys!!! 
I'm strugling a little bit ond coding LED tail lihgts on a Euro 2018 MK7.5. I bought DAP led tail lights with harness used the dap obd eleven coding and also tried manual coding and i have all lights working with dynamic, except right corner light says it's not working but works and the position lights don't work. 
Thanks for any help!

[dv52 (Australia)]

hmm...... nowhere near enough information provided to understand this problem

• What is a "right corner light" and which "position lights don't work"?
  
• What model and build year is this car?
  
• What country is this? 
• How was this car built - did it have factory fitted incandescent tails? 
• What is the specific fault code(s)?

Also post a link to the retrofitted equipment (tail-light fittings AND harness).

Don

[elcabe22]

Hi sorry here more info


What is a "right corner light" and which "position lights don't work"?

Would be left blinker? Position would be Low beam?

What model and build year is this car?

GTI m.k7 2018

What country is this?

It's a Euto version, car is in Argentina

How was this car built - did it have factory fitted incandescent tails?

Yes not led

What is the specific fault code(s)?
I have  
B11EB15 Right rear turn signal bulb open circuit/short to B+
B12C715 Left rear fog light bulb  open circuit/short to B+
U101100 Control module incorrectly coded 

Link for tail lights
www.shopdap.com/mk75-led-taillights-to-euro-mk75-dynamic-led-turnsignals-5g0998207ghm75grp.html

[dv52 (Australia)]

Hmmm........ OK - so if I understand correctly, you retrofitted the DAP harness which is designed to operate on a North America Region (NAR) model Golf mk7.5 on a EU model Golf mk7.5!!! And, I'm not sure what coding changes were made to this car - I assume that you applied coding changes recommended by DAP - which again are designed for NAR model Golfs?

Not surprising that there are error messages because the tail-lights on NAR model cars comply with America's DoT (Department of Transport) road rules and EU models do not!! And, the tail-lights on the two version Golf mk7.5s are factory wired differently - so the Leuchte-set assignments are not the same!!

Don

[elcabe22]

Yes aplied DAP coding on obd eleven and made it also on VCDS manual.
So my first move would be change harness i asume?

[dv52 (Australia)]

May 7, 2024 13:28:17 GMT elcabe22 said:

Yes aplied DAP coding on obd eleven and made it also on VCDS manual

hmm....... I'm not sure why you appear to take comfort in the fact that you "aplied DAP coding on obd eleven and made it also on VCDS manual".

Using two different diagnostic devices to make the SAME inappropriate coding changes does NOT somehow provide a fix for incorrect coding!

May 7, 2024 13:28:17 GMT elcabe22 said:

.So my first move would be change harness i asume?

OK - lets reset and start again from the beginning. The first thing to acknowledge is that the equipment that was installed in this car was very non-OEM - meaning that VW NEVER designed a mk7.5 that was factory built with incandescent tails to operate DAP LED tail-lights with, or without a DAP harness.

By definition, non-OEM means that each third-party manufacturer is able to design their products in whatever different way that they choose. In this case, the DAP web-page says:

• This kit allows you to install these european LED tail lights on your North American model

So, I have NO idea whether these North American DAP tail-light fittings (without the DAP harness) are direct plug-in compatible with another non-OEM manufacturer's harness that is designed to fit on an EU mk7.5 with factory built with incandescent tails. 

Whether this mixing of 2 x non-OEM manufactuer's equipment will work depends solely on whether the North American DAP tail-light fittings were also designed to fit EU mk7.5s with factory installed LED tail-lights

Of course how you proceed is entirety your choice - but I suggest that before you throw any more money at this project, you make an informed decision based on specific advice from DAP and/or the manufacturer of the alternative harness

That said, I am prepared to take a preliminary look at this problem - but I suspect that I won't be able to fix it because the solution involves both coding and physical wiring changes . However, there seems to be  discrepancies between the words in your first post and the error codes in your later post!

Both of your posts mention the right turn-signal. However, your first post mentions "position lights" and your second posts does NOT have error codes for these lamps. And your second post identifies the left fog light - but you don't say anything about this lamp in your first post 

So - lots of conflicting information about this problem that prohibits moving forward - the specific information that you provide is important to my understanding of this problem (I can't help if the information is NOT accurate and clear - and I won't guess)!!

Please do the following:

1. Using different words, describe again in detail which lights and which lamp positions on the inner/outer left/right fittings do NOT work on this car
   
2. Clear the errors on the SCAN report and re-post the new error codes
3. Post-up a copy of the DAP coding instructions
4. Using VCDS, create an admap of the BCM and post a copy. To create a BCM admap - see my instructions HERE. After you have made the admap - of course posting the contents on this forum will be different to the steps in my instructions. Instead of the last screen on my instructions - use the "Add attachment" button at the extreme right-side on the upper part of the screenshot below to add the admap file:

Don

[elcabe22]

Thanks Don for the response!

Yes english is not my language so have me some patience on the tech explaining.



1. only lights that DON"T work are low beam on all 4

2. DTC errased and they dont come back unless i use right blinker of fog light (both work)

3. Here i leave DAP and also i found a ECS tuning that has different coding and harness that i asume that would be the problem

OLD 5G0-998-998-BF install instructions mk7....pdf (261.36 KB)

assets.ecstuning.com/edoc/PDF_11738_VW_MK7_Golf_European_LED_Tail_Light_Harness_Kit_Install.pdf


4. adpmap-09-5Q0-937-086-BL_3VW4E6AU9JM296512-....CSV (159.3 KB)

Thanks for the help!

[dv52 (Australia)]

hmm......... I can only make observations - as I said, I can't fix this problem (there are too many unknowns)!

• Leuchte24SL HRA65 is a right-side Leuchte-set - but it's coded with left side Leuchte-commands on this car! Meaning that it is coded with "links" Leuchte-commands rather than "rechts" Leuchte-commands
  
• How many rear fog lights are on the DAP tail-lights? This car is coded for rear fog lights on both right and left side - but the DAP instructions ONLY code ONE car-side!
• The Leuchte-command for what you call "low beam" (it's called Parking Light -PL) is  Standlicht allgemein (Schlusslicht: Positionslicht: Begrenzungslicht). On this car, ONLY Leuchte25KZL HA59 (which is a left-side Leuchte-set) has this Leuchte-command. And the PL Leuchte-command is coded to illuminate fully - which means that it's the same lighting level as the brake light. So drivers at the rear can't tell when you press the brake pedal at night!! As indicated in the DAP coding instructions - PL lamps should be illuminated to 30% ONLY!

Don

[elcabe22]

Dap Lights have only one fog light the other one is reverse.
I recoded fog lihgt and now i have no dtc and work perfect
yes Dimmwert AB20 AB21 i modified to see if parking light would turn but i still have no parking lights
I made a Euro code and now i still have no parking lights and passenger blinker work but still have DTC

adpmap-09-5Q0-937-086-BL_3VW4E6AU9JM296512-....CSV (159.32 KB)adpmap-09-5Q0-937-086-BL_3VW4E6AU9JM296512-....CSV (159.32 KB)

[dv52 (Australia)]

OK, at least the fog-light error is fixed (no thanks needed for my advice, but it would be polite!)!!!

For the right-side turn-signal problem, try this:

• ENG116955-ENG116235-Leuchte19BLK HRC31-Fehlerort mittleres Byte DTC-DFCC 19 > 0

If the turn-signal error still persists - keep the change above and also add the following:

• ENG116955-ENG116571-Leuchte19BLK HRC31-Lampendefektbitposition 19 > 0

I'm really not sure about the Public Lighting issue because you have made so many changes, you have lost the original factory Leuchte-sets for the PL function.

My ONLY suggestion regarding the PL issue is that you start again from the beginning - meaning I suggest that you restore the factory Leuchte-sets values on this car that were originally assigned to the PL function. After the PL Leuchte-sets are restored to factory values - re-make the PL changes in your DAP coding document

Again, as previously advise -  the PL Leuchte-command = Standlicht allgemein (Schlusslicht: Positionslicht: Begrenzungslicht).

To find the original PL factory values - you will need to access the VCDS history records and identify which Leuchte-sets were factory coded with the PL Leuchte-command above

If you are NOT aware of the VCDS change-records - look in the following sub-directory on the laptop that you use to run the VCDS software: 

• C:\Ross-Tech\VCDS\Debug

In this sub-directory, open the file AdpLog.CSV with a high-level app like MS Excel. This file contains records of ALL the changes that you made to adaptation channels with VCDS. 

Each record is date stamped - I suggest that you go back through the change-records to the very first instances of the PL Leuchte-command. These changes  will identify the factory coded Leuchte-sets for the PL function. Restore these changes to the factory values. Then look again at your DAP code-change document and remake the changes for those Leuchte-sets that identify the PL Leuchte command

This process is slow and tedious - but it's my ONLY suggestion (it's entirely your choice if you want to accept my suggestion)

Don

[elcabe22]

Thanks For the help Don really apreciated!
Yes blinker now works perfect!
What i will do i go to read my friend car that has same equipment same year so you can compare the PL Leutche-Comand

Thanks for the help!

here the OEM CSV

adpmap-09-5Q0-937-086-CE_3VW4E6AU7LM017027-....CSV (172.77 KB)