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

[greatoz]

Don -

thanks much for the immediate and hyper-detailed response - you have grasped what i struggled to express and we're on the same page with regards to goals. this is the "Scandinavian" setting. drivers in America, especially California, are complete lackwits and anything to facilitate being seen is, IMO, better. i also tweaked the brakes to flash in panic braking, and while i haven't had a chance to test it, i hope it'll save me getting rear ended. i need to get a GoPro feed into my laptop and test, or put the wife behind the wheel, tell her to hammer it and do her best to lock 'em up at 100Kph.

anyhow. you categorize your documentation as arcane - perhaps so, but if one were to adopt an earlier definition of arcane then the weapons-grade wizard knowledge is very helpful indeed! the OCD-level of reverse engineering going on here is the reason i registered for this forum, i'm glad to have your enthusiasm as a resource. i also poke and prod and pull apart until i get it to the lowest levels.

also thanks for the harness diagram, and unsurprised about pin5 PWM on your scope. perhaps VAG did this so that they can use the MQB platform with different IC's in light switches for different markets versus a harness change. an IC IC change in a switch with a mix/match/swap to meet demand strategy may be cheaper than different harnesses for different markets? chips are cheap, cheap as chips, i dunno, struggling for an analogy here. just my $0.02...

before i get accused of being touchy-feely or appearing sycophantic, your suggestions make sense. i've got my own database (well, excel really) and have posted one of my tails for your review.

that said, i've already re-coded my tails, implementing a modification of your settings detailed in http://www.vwwatercooled.com/forums/...ml#post1122001. my tweak has all four lights blinking on turn signaling but they don't go completely out on the dark phase of a turn signal blink, they stay on for the cycle at 28 versus 0.

here's ONE light with obvious data points - stock, current, your suggestion and my response.



of note is that all four rear tails are set the same way.

the column to the far right is a proposed mod to your suggestions, as they're promulgated they'd step on my current settings.

i THINK that each light has 4 possible operational phases, and they are activated in descending order, AB first, then CD, EF and finally GH. if i change the GH link function from not active to daytime running lights, it may produce the desired effect. please feel free to correct any misconceptions. am i correct in my understanding of the way the functions link, cascade and drive groups of lights?

if my thinkig is correct, then lights that function together (the halogen tails and the third brake light) can be coded with the same link functions to work concurrently.

in other words, if i make this change:



then the third tail would light up as a parking light with my current settings. if this is correct it facilitates my own understanding of how all these lights interoperate AND makes future tweaking less of a brain strain for me...

again, hope this makes sense, and i appreciate your time and efforts!

if this doesn't work as hoped, then i'm going to dig into your instrument cluster dimming curves. that's a WHOLE lotta squeeze for only a little juice - hoping this route works!

best,

tGo

[DV52]

great0z: New information:

1. Your tails have been modified!
2. Your inner tail lights use a similar set-up as suggested by JBale (of VWVortex fame)
3. The priority sequence of what I have called the "Alpha-pairs" in my paper needs further explanation (I think)

.
Response as follows:
Point (1) - Doesn't matter, but my previous suggestions don't apply!

Point (2) - I have to admit that I have never really understood the basis for JBale's tweak (no offense intended to Jeremy- he is a quite brilliant and very knowledgeable guy). The problem I have with the set-up is to do with the way that the AB alpha-pair is programmed. Your set-up assigns both the brake-light and the indicator function to the same alpha-pair. Here's my dilemma with this set-up; how does the car decide when resolving the conflict where both the brake and the indicator functions are energised at the same time? You might be aware that your compatriots with NAR models that have tried this configuration have complained of a delay in the operation of the inner tails compared with the outer lights. My personal hypothesis (which is totally speculative and entirely unproven) is that it's this intra-alpha pair conflict that causes this delay. But, clearly your set-up does work, so my concern is just of academic interest, rather than being a practical issue. Incidentally, if you have any information regarding tie-breaking rules for Leuchte channels within an alpha-pair, I'm all ears!!

Point (3) - I'm not sure how to say this tactfully, so I won't try! The work that I have done on Leuchte programming suggests that the priority sequence for the alpha-pairs is: Priority = GH> EF>CD>AB (i.e. the highest priority alpha-pair is GH and the lowest priority is AB). Based on my observation of how alpha-pairs interact and looking at your table, the priority of the three functions on your inner tails are: Parkers-first, followed by indicators and brake light (same priority) - but I don't think that this is what you wanted! In fact, I suspect that the order of functions in your set-up might help explain why your blinkers don't completely extinguish but instead, take-on the illumination level of the parkers (i.e. the parkers have the higher priority),

Finally, now that I know how your inner tail lights have been programmed, let me invite you to think about how you want the DRLs to integrate into the Indicator-Brake-Parker functions. By definition, the DRLs are (normally) fully illuminated whenever the rotary light switch is in the off position. This means (I think) that the inner tail lights (when used as DRLs) will be fully illuminated during daylight hours. More importantly, this also means that there will be no difference in the illumination of the inner tails when the brake lights are energised (during daylight hours) - is this what you want? Also, the placement of the DRL function in the priority order of the alpha-pairs will be important, else this function will override/conflict-with the indicators. For this reason, I think that it might be prudent to place the Brake and DRL functions into the same alpha pair (this is also handy because they also share the same illumination level) and to give this pair a lower priority to the indicator function. I also believe that the Parkers should have the lowest priority.

So, based on these accumulated suggestions, my proposal for the four lighting functions for the inner tails on you car is:

Alpha pair AB - Parker set to 28% illumination
Alpha pair CD -Brake and DRLs set to 100% illumination (only noticeable difference between functions during night time when light switch NOT in off position)
Alpha pair EF- Dunkelphase
Alpha pair GH- Indicator (Hellphase)

Cheers
Don

PS: because of the same priority matters as discussed above you might want to also consider swapping the brake and parker functions in your 3rd brake-light table. Suggested pairings:

Alpha pair AB - Parker set to 28% illumination
Alpha pair CD, or EF, or GH - Brake set to 100 % illumination

[zloybob]

zloybob - thanks for this! if I may, what's the security option for:

Hydraulic Brake Assistant
Hydraulic Brake Booster

i'm trying to sort out which of the ABS options affect pedal feel, at my own (grave personal?) risk - thanks in advance!

tGo

try one of these
11966
37202
31857
28183
44595
24435
15081
18573

[DV52]

try one of these
11966
37202
31857
28183
44595
24435
15081
18573

Zloybob:I know that your reply was intended for greatoz, but the additional information is greatly appreciated for my reference list. Many thanks for your generosity!
Cheers
Don

[Bouky]

Hello, is possible coding checkbox(X) for "Switch off screen (after 10 seconds)"?? I mean that permanent tick this check box... thanks

[bloggo]

Hello Don,

Your photo of the rotary switch is different to the one in my wiring diagram, which is "Golf Basic Equipment from August 2012". I am wondering if I have the incorrect diagrams or is the Australian version different?

Can you advise how you ascertained what each light is for as an example: "Leuchte23SL HLC10 Lichtfunktion C23"? It appears you have devised a way of interpreting what each code means and I would be interested in this information so that I can translate my admaps.

Our last discussion was on the Ross Tech forum and you were going to PM me with your email address so I could send you my admaps, but I have not seen any messages, could you confirm if you still want them.

I have not had time to change X5=64 on the dash panel lighting yet but would like to know what difference this will make.

Thanks
Bill.

[DV52]

Hello Don
Bill.

Bill: Good to hear from you again - How about sending down some of that warm England sunshine? It's "brass monkey" weather down here!

Our last discussion was on the Ross Tech forum and you were going to PM me with your email address so I could send you my admaps, but I have not seen any messages, could you confirm if you still want them.

I had thought that I sent my email details - but I just re-checked in my "sent" file and it's not there- apology. Will remedy my error shortly. I'm keen to get more UK mk7 models into my database - so I'm looking forward to receiving your admaps

Your photo of the rotary switch is different to the one in my wiring diagram, which is "Golf Basic Equipment from August 2012". I am wondering if I have the incorrect diagrams or is the Australian version different?

I'm familiar with the "August 2012" Wiring diagrams. I've just re-checked the information in my version with the VW wiring diagram for the rotary light switch (which VW calls EX1) and the connection data is the same (I think). The diagrams themselves are different because I created the version in my picture. But I believe that the information in the two documents is compatible!

Can you advise how you ascertained what each light is for as an example: "Leuchte23SL HLC10 Lichtfunktion C23"? It appears you have devised a way of interpreting what each code means and I would be interested in this information so that I can translate my admaps

The best way for me to explain the anatomy of the descriptors that VW use for their Leuchte channels is by way of an example. I've randomly chosen the left Daylight Running light from my car for this purpose and I've pasted below the Leuchte channel set for this lamp




Here's how I believe that VW's nomenclature operates:
Column #1: is a raw identifier and a complete Leuchte channel-set has 19 channels (hence the parentheses 1 to 19)
Column #2: is a simple statement of the nature of the adaptation channel meaning "lamp" in English (I think)
Column #3: the number "4" always aligns with the "4" in column #8. "TFL" is the German abbreviation for the nominal light function. In this case TFL stands for TagFahrLicht which is German for "Daytime Running Light" (I think). I've provided a complete list of these abbreviations in my paper.
Column #4: The "L" means "Links" which means "Left" in English (for left side of the car).The right side laps will have the abbreviation "R" for Reicht in German. B4 is the connection point of wire for this Leuchte channel set on the BCM. If you look at VW's PIN-OUT diagram for the BCM on your car, you should find the information below


Notice that the PIN-OUT confirms the Leuchte channel information. That is, PIN-4 on socket B is connected to the Left DRL (Hence the descriptor B4). I'm really not sure how your lamps are configured in England, but this is primarily how I produced the location pictures for the lights on my car in my paper (i.e. by linking the Leuchte channel information with the BCM PIN-OUT data). You will find the PIN-OUT designations at the back part of VW's "Basic equipment" document (this is the same as the wiring diagram for August 2012 that you mentioned earlier).
Column #5: is the descriptor for the function of the adaptation channel.
Column #6: there is only one channel that has the HD setting (i.e. Channel (7)). This channel determines what the lamp will do when the hatch lid is opened. HD stands for "HeckDeckel" which means "Rear Lid "in English. There are just 2 x allowable settings for this channel: "Only if closed" and "always"
Column #7: this is the "apha" identifier that I describe in my paper. A Leuchte channel-set has 8 x alpha channels that can be individually programmed. Each "alpha pair" is then given a "Dimmwert value" (i.e. 0-100 from incandescent lamps and 0-127 for LEDs) and a "Dimming direction" value (of either "maximise", or "minimise"
Column #8: this part of the descriptor links the Leuchte channel-set to the lamp's twin channel-set titled "Lighting Configuration". In the same way that there are 665 x Leuchte channels, there are also 665 x Lighting Configuration channels in the BCM. Each Leuchte channel set has its twin "lighting configuration set". Read my paper regarding my theory about how the two are related.
Column #9: This is the setting for the adaptation channel. Allowable values vary but I have included a complete list of all the allowable settings in the latest version of my paper.

have not had time to change X5=64 on the dash panel lighting yet but would like to know what difference this will make.

I've now had the instrument cluster lighting tweak operating in my car for about 6 weeks now and I reckon that it's very nice indeed-even if I say so myself! The two dials in the cluster are illuminated during daylight hours and the dimming level adjusts according to the light level in the cabin. The "anchor point" of Hex 64 appears to be just right (IMO) and I think that it's no coincidence that this value is decimal 100. I suspect that VW had this value in mind when they set-up the response characteristics of the photo-transistor in the cluster assembly (this is an entirely unproven hypothesis, but I don't believe in coincidences!).

Cheers
Don

[bloggo]

Hello Don,

I have emailed the info but I can't locate your paper, could you let me have the link?

Thanks
Bill.

[DV52]

Hello Don,

I have emailed the info but I can't locate your paper, could you let me have the link?

Thanks
Bill.

Bill; received your email - very nice set of admaps indeed! Thanks for sending them.

You can find a copy of the latest version of my paper on Leuchte programming HERE My apology, but unfortunately it's a 12 page document at present -too long, I think. My intention is to cull the diatribe when I get some spare time.

Also, I'm not sure if you have had a chance to visit VwWatercooled's reference thread for mk7 VCDS tweaks. I've put a bunch of other stuff on this thread HERE which may be of interest.
Cheers
Don

[bloggo]

Bill; received your email - very nice set of admaps indeed! Thanks for sending them.

You can find a copy of the latest version of my paper on Leuchte programming HERE My apology, but unfortunately it's a 12 page document at present -too long, I think. My intention is to cull the diatribe when I get some spare time.

Also, I'm not sure if you have had a chance to visit VwWatercooled's reference thread for mk7 VCDS tweaks. I've put a bunch of other stuff on this thread HERE which may be of interest.
Cheers
Don

Thanks Don.

Regards
Bill.

[noodile]

Hey guys,

anyway to disable the bulb out system on the Low beams and Highbeams. Planning a xenon projector retrofit. (not the actual higher model headlights, but a traditional projector install), and i was hoping to get rid of the bulb out light without having to use a canbus system or an error canceller.

[greatoz]

Zloybob: thank you sir! I will try those and report effectiveness when I've got the cycles free to play with them. MUCH appreciated.

Don: after MUCH playing I think that I've determined that no matter how I code my tails, the dimmer wire from the harness to the rotary switch causes the dash lights to brighten up. I've tapped position 10 on the referenced harness for my P3Cars gauge, and since the Scandanavian running lights tweak is tied to the Parking Lights function, the desired outcome isn't possible.

Without the Scandanavian DRL tweak, here's the observed behaviour:

Headlight Switch Position: Off and all lights are off / Dash Dimming:variable, low brightness / P3Cars: Bright
Headlight Switch Position: Auto and DRLs on / parkers off / Dash Dimming:variable, low brightness / P3Cars: Bright
Headlight Switch Position: DRL and DRLs on / parkers on / Dash Dimming:high brightness / P3Cars: dimmed
Headlight Switch Position: Headlights and Low beams, DRLs and parkers on / Dash Dimming:high brightness / P3Cars: dimmed


With the Scandanavian DRL tweak, here's the observed behaviour:

Headlight Switch Position: Off and all lights are off / Dash Dimming:variable, low brightness / P3Cars: Bright
Headlight Switch Position: Auto and DRLs on / parkers on / Dash Dimming:variable, low brightness / P3Cars: dimmed
Headlight Switch Position: DRL and DRLs on / parkers on / Dash Dimming:high brightness / P3Cars: dimmed
Headlight Switch Position: Headlights and Low beams, DRLs and parkers on / Dash Dimming:high brightness / P3Cars: dimmed

I was / am(?) after a config that will give me DRLs and parkers in Auto with the dash dimming as variable AND the P3Cars bright - this is my preferred "set it and forget it" for the car.

I got everything I wanted but the Parking Lights with DRL's in the Auto position and a bright gauge for daytime driving, so I unless a re-code ALL the parking lights as another sort of light that needs to be on during the day and the night, I can't see it working as I want.

The parking lights APPEAR to cause the cause the gray wire at headlight switch position 10 to energize - this lights up the dash and dims the P3Cars gauge.

I am considering this re-coding of all the parking lights as something else, but that's a LOT of squeeze for little juice, if any. I don't think an instrument dimming curve re-code effort would do what I want as the setting seems tied to the parking lights - "Tagfahrlicht - Dauerfahrlicht aktiviert zusaetzlich Standlicht auswählen" seems pretty straightforward. If I could figure out how the dimming algorithm works and what lds means as per my first post I might get closer...

Anyhow, I'll keep you posted and thanks for the assist, sir, much appreciated.

I'll also feed back any success with the codes Zloybob supplied for your reference and community benefit.

tGo

[DV52]

Hey guys,

anyway to disable the bulb out system on the Low beams and Highbeams. Planning a xenon projector retrofit. (not the actual higher model headlights, but a traditional projector install), and i was hoping to get rid of the bulb out light without having to use a canbus system or an error canceller.

Noodile: Hello to you way up there in Egypt!

Not sure that I understand your question - do you intend to change the 4 x halogen lamps with 4 x HID kits (rather than replacing the headlight assemblies)? If so, I'm assuming that you want to drive the new Xenon lamps and their ballasts via a relay circuit - hence your concern about the CAN-bus error messages. Is this correct?

The adaptation channel-sets for your halogen lamps will be :

• Leuchte6ABL LC5- Left Low Beam
• Leuchte13NL RB5- Right Low Beam
• Leuchte8FL LB39- Left High Beam
• Leuchte9FL RB2- Right High Beam

In each of these channel-sets, the adaptation channels with parenthesis (2) and (3) perform circuit monitoring and lamp error reporting (I believe). The general descriptors for these channels are:

• (2)-Leuchte#### ###-Lampendefektbitposition # (Lamp-defect-position)
• (3)-Leuchte#### ###-Fehlerort mittleres Byte DTC-DFCC # (Fault Middle Byte DTC DFCC)

Unfortunately, not much is known about these mysterious channels outside of VW and I have been unable to find any information regarding how these channels operate. However, I believe that that the settings in these two channels refer to memory locations in the BCM because the individual hexadecimal values for these two channels only appear once for any of the active lamps in a particular vehicle. Please note that this is an unproven hypothesis based purely on observation.

The current settings on your car for these two channels are

Lamp	Adap channel (2)	Adap channel (3)
Left Low Beam	36	1A
Right Low Beam	40	1B
Left High Beam	37	1C
Right High Beam	41	1D

I assume that you are aware that on the mk7, the rotary light switch is connected to the BCM and it is this control module that directly drives each of the exterior lights via a separate set of pins.

Just as a suggestion, you could try altering the settings on these adaptation channels to 00 on the four channel sets that I identified in the first part of my post above. (i.e. change 8 x adaptation channels in total). I have noticed that VW program the unused Leuchte channel-sets this way. So, this setting might have the affect of shutting-down the fault monitoring/reporting facilities for your high/low beam lights. Please note that this suggestion is untested - but please provide feedback if you try it (any information will add another piece in the jigsaw puzzle)

Cheers
Don

[Ralfi]

Just had the following done today...

- Traffic
- Indicator flash x4 (instead of 3)
- Alarm beep (chirp) on lock/unlock

[wasabiz]

ECS off via button. - GOLFMK7 - VW GTI MKVII Forum / VW Golf R Forum / VW Golf MKVII Forum

has anyone done this yet? it fully disables ESC through the button.