VCDS (VAG-COM) codes and programmable options for Golf Mk7

[ArdiL]

Thanks for your reply Don,
I tend to confuse when I add too much info, my bad.
Car is 05/2017 Highline with (Rline, infotainment & Driver assist)
You have suggested -

• Lasttyp > 34 - LED Bremsleuchten

However that is already the current setting.


The current settings in my car are the New Settings Column on the right.


As you know the tail lights (dimmwert cd 23/24 are set to 30) are dimmed slightly when used as park lights therefore when brake pressed they can easily be noticed. (If I understand the coding correctly)

- My question is how to do the same for the inner tail lights?
(I want them to dim as park lights and increase when brake pressed.)

As I understand from your reply and coding instructions the inner tail lights are coded using Leuchte27NSL RC6?
VCDS (VAG-COM) codes and programmable options for Golf Mk7

Update: On your diagram I noticed that the turn signal is on the inner lights however my turn signal is on the outer light, ?

I have played with these settings before and didnt get anywhere, maybe even mesed up the settings.
I'll try again using these settings. ANything I need to do to test ?

Update 2: Leuchte27NSL RC6 seems to be not active, I have still tried to code using instructions but nothing happns.


Regards

[DV52]

@ArdiL: Ain't "my bad"- more information is never bad!!

I kinda suspected that Leuchte27NSL RC6 wasn't active on this car because I couldn't see how your tails equated to the fitting in the pic on my link! If a Leuchte-set is factory disabled, then making any changes "does nothing" because there isn't a wire terminated on the module pin that is controlled by this Leuchte-set.

OK - how to proceed? Maybe a better basis for a way forward with this problem is to try a totally different approach? Let's forget entirely about Leuchte programming and instead use the infallible principle of common sense!!

Here's my thinking; if I understand your wants correctly, you want inner tail lights to operate like the outer brake lights. If I'm correct, then it logically follows that a workable solution should be to copy the values of the Leuchte-sets for the brake lights onto the inner tail lights. I'm not sure how the Leuchte-sets for the brake lights are programmed on this car -maybe the values are different to those in your table!

Now, there are a couple of general considerations when applying this copy-and-paste solution:

1. The "seed" Leuchte-set should be applied to the same car-side as the "recipient" Leuchte-set
2. The settings for the 2 x fault monitoring channels in the "recipient" Leuchte-set should NOT be altered. So, the following channels should remain unchanged:
   1. Lampendefektbitposition
   2. Fehlerort mittleres Byte DTC-DFCC
   
   

So, the mapping pairs for this solution are:

• Left car-side: Leuchte20BR LA71 -> Leuchte23SL HLC10
• Right car-side: Leuchte21BR RC8 -> Leuchte24SL HRA65

Don

PS: If my suggestion isn't appropriate (maybe it results in the same Leutch-set values as in your table) then please provide more words about what happens when your table values are used

[ArdiL]

Hey Don thanks for the information.
Your correct about Leuchte27NSL RC6 - not doing anything. (I didnt get anywhere with this set)

Moving onto what should NOT be changed.
thanks for this valuable information. Sometimes its good to know WHAT NOT TO DO.
I will leave those values as default.

You have suggested the following
So, the mapping pairs for this solution are:

• Left car-side: Leuchte20BR LA71 -> Leuchte23SL HLC10
• Right car-side: Leuchte21BR RC8 -> Leuchte24SL HRA65

Before I attempt the above I will continue with something I have already played with this morning...
I came across some information as follows.
CHeck..
Leuchte17TFL R BLK SRB3TFL R BLK SR KC3: = Inner Left-Side
Leuchte16BLK SLB35BLK SL KC9: = Inner Right-Side


I had limited time this morning but was able to modify the Inner left side as follows
Leuchte17TFL R BLK SRB3TFL R BLK SR KC3 - Lichtfunktion A? (Standlicht allgemein Schlusslicht;Positionslicht; Begrenzungslicht) to >>> Brake light
This seemed to work so I will copy from my table
Leuchte23SL HLC10 settings to Leuchte17TFL R BLK SRB3TFL R BLK SR KC3


Will let you know the result.,

[ArdiL]

Heya Don,
Thanks for your input and guidance.
I have coded the inner park lights same as outer park lights.
Now they all work as brake lights (100%) aswell as park lights at 30%.

I have a few more questions..

1: Can the reverse light change to yellow color and then be coded to work with turn signal ? Like the front LED?
Most likely the answer is NO.

2: There seems to be an empty slot next to the brake light, is this empty or just dissabled?
Most likely EMpty.

3: I have seen dual Front LEDs active on some cars, is there a way to check if mine has them to?
I have single white DRL LED that turns yellow and becomes the indicator.

Regards

[ArdiL]

I just wanted to finish by adding a quick video of what my rear lights look like after all the coding.



Brake with tail lights on -

Brake without tail lights -

2017 Highline with R line Option.

[DV52]

@ArdiL: No thanks needed - it sounds like you found the answer yourself (i.e. changing the coding on 2 x additional Leuchte-sets - Leuchte16BLK and Leuchte17TFL). On the version of tail-light fittings on the picture in my link, these 2 x Leuchte-sets are used to operate the second (inner) turn-signal lamps!

Anyhow, well done - and thank you for sharing your work with the forum community (that's what forums are meant to do)! I've added your tweak to the mkVII-vcds-tweak-reference-thread as acknowledgement for your generous contribution!

My responses to your questions below:

Question 1 - Alas No, the reversing light is a bog-ordinary lamp. The color of this light is predetermined by the physical lamp (this lamp is NOT like your front DRL/Turn-signal lamp)!
Question 2 - hmm...I would be extremely surprised (flabbergasted, in fact) if the "empty slots" were populated with actual lamps. Vehicles that roll-off the VW assembly-line are renowned for being "production efficient" - meaning that the amount of copper/equipment in these cars is just sufficient to provide for the options that the buyer paid-for (ain't no profit for VW shareholders in supplying more than the bare minimum )!
Question 3: Same response as in Question 2!

Don

PS: is there any way that you can add the Leuchte-set assignments to the 1st picture in post #1881? I reckon this your add greatly to your already excellent post!

[ArdiL]

Don

PS: is there any way that you can add the Leuchte-set assignments to the 1st picture in post #1881? I reckon this your add greatly to your already excellent post!

I think it might be easier/better to add the 1st picture in post 1881 to my last post that has the video also.(1882)

[CrazyChaos]

3: I have seen dual Front LEDs active on some cars, is there a way to check if mine has them to?
I have single white DRL LED that turns yellow and becomes the indicator.

I am there with you man. I realized that the inner slot is used for the highbeam.
Just got my cable and will change the rears like yours, then will check the fronts. Thank you for your post!

[ArdiL]

I am there with you man. I realized that the inner slot is used for the highbeam.
Just got my cable and will change the rears like yours, then will check the fronts. Thank you for your post!

As I used a lot of copy and paste between the coding instructions I found a slight mistake with my instructions set.
Lichtansteuerung HD AB 16 = Only if Closed / ALways
Lichtansteuerung HD AB 17 = Only if Closed / Always
These should be the same value for both.
The inner tail lights (left & right) will operate only if hatchback is closed


Regards

[CrazyChaos]

As I used a lot of copy and paste between the coding instructions I found a slight mistake with my instructions set.

Thanks ArdiL. Did the changes and am very happy with the end result. Thanks again.
One minor error/typo in your settings:
Right side Inner
Dimmwert AB 24 should be Dimmwert AB 16

[ArdiL]

Thanks ArdiL. Did the changes and am very happy with the end result. Thanks again.
One minor error/typo in your settings:
Right side Inner
Dimmwert AB 24 should be Dimmwert AB 16

Should be all corrected now.

[CrazyChaos]

3: I have seen dual Front LEDs active on some cars, is there a way to check if mine has them to?
I have single white DRL LED that turns yellow and becomes the indicator.

I have copied the settings of Leuchte 5 to Leuchte 3 and nothing happened to the inner led. So I think we are lucked out on this one.

[deadcat]

I have a 2019 Golf GTI (7.5 MY19, Australian delivered). I bought some genuine VW dynamic tail lights - Euro 7.5 Golf R type. The VW kit is called ("Electrical conversion kit LED tail lights with sweeping indicator". The instructions in the box advise that I need to wire as follows:

• Run new wire from BCM (connector C). Remove pin 9. Remove pin 3, and insert into pin 9. Put new wire into pin 3,
• Run new wiring to tail lights as per diagram (the provide details on pins to change)
• Code using ODIS with code 3EC1A

How do I code the adaption(s) using ODB Eleven ?

[DV52]

@deadcat : Hi.

Hmmm..... I don't know the answer to your question because code 3EC1A is a SVM (Software Version Management) function in ODIS that contains its own bunch of (embedded) coding changes.

First- you don't say how this car was factory built (it matters) - but I suspect that it has a factory wiring loom for OEM fitted LED tail-lights (i.e. the car was NOT built with incandescent tail-lights).

For the BCM (the module that controls the car's 35 x exterior lights and the module that OBD11 calls "central electrics") on a Golf mk7.5, and for socket C:

• pin#9= Bulb 2 for rear left turn signal. This is the "inner" blinker position and it's called "M80" in the wiring diagram
• pin #3 =Bulb 2 for rear right turn signal. Again, this is the inner blinker position and it's called "M81"

The reason why I conclude that this car was factory built with LED tails is because if there is already a wire on pin#9 & pin#3, then the car MUST have inner turn-signal lamps. Therefore the car can't have incandescent tails (which don't have inner blinkers).

So, it's unclear (to me at least) how the new tails operate by just making only the 2 x wire changes listed in your post.

My hunch (guess, really) is that there must be additional wiring changes made down-stream of the BCM connectors. For example, it's quite possible (IMO, of course) that the inner/outer turn-signal lamps are now connected together on each car-side somewhere at the fitting end - there is no reason to have these lamps separately wired since they operate together for each car-side. Again I'm entirely guessing, but maybe this is reason for the strange short "connector" shown on the upper portion of the rear window in your picture - perhaps?

If I'm correct, its possible that the previous inner-left/right turn-signal pins on the BCM (as in your post) are no longer used for their original OEM purpose. Instead, its possible that these pins are now used to provide power to the LED chaser circuits inside the new dynamic turn-signal fittings - maybe?

Of course, my entire hypothesis is just supposition based on the limited data in your post

Unless another, wiser forum colleague can provided a more-informed response - it might help if you can supply more words about this project?

Don

[Ralfi]

Not sure if this has to do with programming or if it’s just the controller used (iirc, the controller was 3rd party, but rear tail lights are genuine).

Has anyone heard of rear tail LED dynamic indicator function for the MK7 GTI being disrupted after a couple of blinks, by either tapping the brake or not even doing anything?

For a while now, I’ve noticed when initially indicating, the indicator LED lights would scroll across as they should, but upon tapping the brake, they’d flash like normal indicators (no scroll).

This has probably been happening for much longer without me noticing. All my testing in the garage is perfect - indicators work every time I’ve tested the left/right/hazards, but when out & about (& I only discovered it when I was parked in front of glass shop frontage) it’s very flaky…

Knew I should’ve picked up the installers when they mentioned they’d used a 3rd party controller (I thought I was getting all genuine parts…..)