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

[badufay]

Don, your reasoning on why the lights work like this is correct. My owners manual states it's to remind the driver to turn on the lights because you are only rubbing DRLs and no tail lights, so logic says if you can't see your dash, drivers behind you can't see you because you have no lights on (or something to that effect). Makes sense, but annoying and having tinted windows doesn't help either. I played around with this tweak this morning and it works well. Only issue I had was how bright the infotainment screen became. The gauges worked perfect, but I need to find a way to separate the infotainment screen from this mod...hmmmm

Ben

[DV52]

Don, your reasoning on why the lights work like this is correct. My owners manual states it's to remind the driver to turn on the lights because you are only rubbing DRLs and no tail lights, so logic says if you can't see your dash, drivers behind you can't see you because you have no lights on (or something to that effect). Makes sense, but annoying and having tinted windows doesn't help either. I played around with this tweak this morning and it works well. Only issue I had was how bright the infotainment screen became. The gauges worked perfect, but I need to find a way to separate the infotainment screen from this mod...hmmmm

Ben

Ben
I have the advantage of installing this tweak some time ago and confronting this same problem. It is possible to reduce the daylight intensity for the infotainment screen by reducing the Hex value for "X5", but this has the consequential impact of also reducing the instrument panel illumination This solution is antithetical to the whole point of the tweak.

Anyhow, when you give this problem some thought, I'm sure that you will come-up with the same solution as did I. Simply press the MENU button on the bottom RHS of the discover media/pro escutcheon plate and using the RH dial, or your finger, scroll to the SETUP icon - which looks like a very impractical gear-cog (on those cars that have the steering wheel on the correct side, SETUP is on the extreme RHS of the list of options). Then press the SCREEN panel and in the next screen click the panel that says Brightness and select medium, or low. Exit all the screens and problem solved!

Don
PS: given that we have both encountered this problem from two ends of the known world, I will add a note to my tweak instructions

[badufay]

Thanks Don, I was thinking the same thing and found low to look best. I ran out of time yesterday so didn't get everything set up quite yet. Hopefully today I'll have some free time to play with this some more.

Ben

[DV52]

Incandescent Tail lights - Add brake function to "inner" lights

The operation of the incandescent taillights on a mk7 is fairly austere (IMO)! Particularly the "inner" lights that are fitted to each side of the hatch door. As stock, these lights do nothing more than function as parking lights and in this mode, they are programmed to illuminate to 28% of full intensity. The "outer" lights work a bit harder in that they function as brake lights, general parking lights, and as one-sided parkers- when the indicator stalk is activated and the car is locked.

Fact is that any of the tail lights (and all exterior lights on a mk7) can be programmed to function in a variety of ways because of the manner in which VW has implemented the Body Control Module (BCM) on MQB platform vehicles. However, the ardour of those interested in creating these tweaks is limited by the boundaries set by the Australian Design Rules (ADRs) which specifies how cars must be lit (amongst other things).

I developed the tweak below to make the inner lights on my incandescent tail light assemblies work harder. In essence, the tweak adds the "brake" function to these two lights so that both the outer and inner tail lights (on both sides) will illuminate together when the pedal is pressed - as well as the high level brake light (see my animation below). I argue that this makes my vehicle more "visible" to the cars behind when I'm braking.

The stock "parker" function of the inner lights is unaffected by this tweak, and I have placed the new function in the Leuchte cannel-set so that the brake lights always have priority over the parker function. I assume that the tweak complies with the ADRs, but I advise that those seeking to implement these instructions should satisfy themselves in this regard.

VCDS Tweak - Add "brake" function to "inner" tail lights

1. Select 09 - Central Electr control module
2. Select Security Access - 16 from the "Open Controller" screen
3. Enter the magic number 31347 and return to the "Open Controller" screen
4. Select Adaptation - 10 from the "Open Controller" screen
5. From the pull-down button change the adaptation channels shown in the table below to the New Settings as indicated:

Notes:

1. The adaptation channels settings on (9) and (11) for the left and right side lights do not need to be changed. I have included these in the table to complete the alpha-channel sub-set entries
2. Do not implement these instructions if the Old Setting values are not the same as shown in the table

[bloggo]

DV52
As you appear to be quite knowledgeable on the Golf 7 lighting, do you know if it is possible to operate the hazard lights when reverse is selected.

I always select the hazards when reversing so to have it operate automatically would be an advantage.

Thanks
Bill.

[Ryan_R]

Really? Is that in a particular location with say a lot of pedestrians, or do you just like everyone to think you've broken down each time you reverse, haha.

[DV52]

DV52
As you appear to be quite knowledgeable on the Golf 7 lighting, do you know if it is possible to operate the hazard lights when reverse is selected.

I always select the hazards when reversing so to have it operate automatically would be an advantage.

Thanks
Bill.

Bill; hello and thanks for the kind words. I'm guessing that the hazard lights are for safety reasons (for pedestrians - as Ryan has suggested above). Not an entirely intuitive facility on my first read, but having thought about it - what an excellent question to ask!

In a previous life (as a much younger but misguided engineer) I recall that large construction vehicles often had this facility-together with the annoying "sonalert" siren when reversing. The blinking lights were a very useful facility for those of us who couldn't hear the warning alert because of the noisey work environment - and because of the mandatory ear-muffs that we were forced to wear!

But alas, I'm not sure that the mk7 can do what you want (I would be delighted to be proven wrong)! The mk7's "Leuchte programming" function is a fairly powerful tool and it can alter the way that any of the car's 35 x exterior lamps operate. But it does have its limitations! What is possible with Leuchte programming (albeit I haven't tested-it) is to make the two rear turn indicator lights illuminate when backing (but not blink on-off).

I will have a closer look in the BCM for an another way of doing this, but unless I can find an adaptation channel with this specific facility, I'm not confident of a solution. If I find something, I'll PM
cheers
Don

[wasabiz]

When I lived in Singapore, every one did the blinking when they want to park/reverse/stop and it's become a habit for me if I park in shopping malls and around city to do the same. This is a really useful feature IMO


Sent from my iPhone using Tapatalk

[bloggo]

Hello Don,
My sole purpose is to add extra safety for pedestrians and other traffic, which I have missed or they have approached too quickly. Even though I have all the aids for reversing there is still the chance that something or someone suddenly appears; the hazards flashing is just another way to be noticed and I have done this for many years.

Why I thought it may be possible is because the hazards can operate in the event of a collision, but if not it is still a finger job!

I must say that your write-ups are brilliant on VCDS tweaks and would put some teachers to shame.

Thanks anyway for your efforts
Bill.

[DV52]

Golf mk7 - Control Module Security Codes

As a forum community exercise, it would be advantageous for both our fellow colleagues and for ourselves to create as fulsome a list as possible of the security codes for the control modules in the mk7. If you are like me, you would doubtless have some of these security codes recorded somewhere for the VCDS tweaks that you have tried.

Below is a list of the security codes that I have obtained from various sources (not sure where, now). I'd welcome other's views as to the veracity (or, otherwise) of the numbers in my table.

If you can add to my list, then I urge you to do so (as a resource for other VWW members and for those that visit this site from time-to-time). I will undertake to consolidate replies into a single list (with appropriate attributions and comments from those that respond).

Please contribute to this list, if you can.
Thanks in advance
Don

Golf mk7 Control Modules - VCDS Security Codes

Control Module	Security Code	Contributor	Comments
01 -Engine	27971 79153	. DV52
02-Auto Trans
2b-Steer. Col. Lock	20103
03- ABS Brakes	25004 11966 15081 18573 20103 24435 24990 25004 25757 28183 31857 37202 40168 44595 40304 10505 19249 10815	zloybob zloybob and acr2001 (RT forum) Rainesh kawzx7 Morde Dana (RT)	Brake booster adaptation only 11966 was able to deactivate hydraulic brake assist -Yomny (Golfmk7 forum) XDS changes 24990 - for All Adaptation channels straight ahead brake stabilization 25757 -brake stabilization for Adaptation/Basic Setting brake disk drying
3C-Lane Change	20103	LIJetta_18
05 - ACC/Start Auth.	20103
08-Auto HVAC	20103
09-Cent. Elect.	31347
10-Park/Steer Assist	71679 20103
13- Auto Dist. Reg (ACC)	14117	Morde
14- Susp. Elect.	20103	NEtech
15-Airbags	20324 30475 11091	VCDS screen VCDS screen	Basic Setting -Seat Occupied Recognition Basic Setting - Belt tensioner
16-Steering wheel
17-Instruments	20103 25327 47115	. Zloybob djduese (RT forum)	Not applicable to MY16 models Accepted on MY16, but no access to adaptation channels for post MY16 control modules
18-Aux Heat	20103
19-CAN Gateway	20103
32-Differential Locks
42-Door Elect, Driver	20103
44-Steering Assist	19249 28183 44595	. DV52 DV52
52-Door Elect, Pass.	20103
55-Headlight Range	20103 15284	. ?
5F-Information Electr.	20103 S12345
A5-Frt Sens. Drv. Assist	20103
A9-Struct. Borne Sound
6D	12345	Morde
75-Telematics	20103	Chillout
??

[zloybob]

03 - 25004 for Brake Booster adaptation
if u need more logins for 03 block, tell me what u want change in adaptations, coz for each option own login
sry for bad english xD

[DV52]

03 - 25004 for Brake Booster adaptation
if u need more logins for 03 block, tell me what u want change in adaptations, coz for each option own login
sry for bad english xD

Zloybob: Thanks for the reply -very good information as usual. I'm not trying to change a particular adaptation channel, I'm just trying to put together a complete list of security codes as a reference source of any one that visits here.
cheers
Don

PS: no need to apologise for your English -it's much better than my Russian!

[greatoz]

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

[greatoz]

interesting conundrum, hoping for some insights

i have a ’15 GTI SE and have installed a P3Cars gauge, wired into the autodim switch and set up to dim when the headlights come on. as an aside, it took me a while to figure out the right wire coming off the headlight switch harness to wire up for the autodim to work - on my North American 15 GTI this is the solid gray wire.

all was working as expected and designed UNTIL i decided to change the daytime running lights behaviour via VCDS…and herein lies my question.

9 - Central Electronics > (6)-Daytime running lights-Tagfahrlicht-Dauerfahrlicht aktiviert zusaetzlich Standlicht > set to ACTIVE turns on the parking lights in the rear when the DRL’s are on. this works as advertised, but also dims the P3Cars gauge. arg!

It appears that the following options might have something to do with this:

17 - Instruments > (1)-Illumination_algorithm-Scale_switching_algorithm > parking_light seems MAY be contributory to controlling dash instrument lighting. changes to this have no affect on dash instrument lighting regardless of parking light illumination. options here are "not intalled, parking_lights, lds, and not active". as stated, it doesn't appear to affect dimming state, though, and i can find zero documentation on-line - any ideas what "lds" might be? am i barking up the wrong proverbial here?

is there a way (without regrouping all the parking lights into a different lighting group, say "10 allgemeine Scheinwerfer" (general headlights) wherever they’re found, which may or may not have the desired effect?) to run the rear parking lights WITHOUT dimming the instruments and hence the gauge?

what i'm after is a way to run the rear halogen tails' parking lights with daylight running lights in auto WITHOUT dimming the dash? while your insights into the instrument lights are fantastic, i don't think a change here to the dimming profile or affecting VCDS coding changes to the photosensor are the answer, it's more a no/no-go for the dash lights with the parking lights - they seem linked.

i hope i'm making sense.

the resources here are INVALUABLE, i’ve read all your papers Don, googled, poured over the VCDS output form my car, had a German friend translate, tried everything i could think of (so yes, n00b did search!), but it’s not jumping out at me immediately, so i figured id’ ask if you had any insight here.

thanks much in advance,

tGo

[DV52]

greatoz: First, many thanks for your kind and generous words - I consider much of the stuff in my papers to be fairly arcane, so I'm pleased to hear that they have been of use!

OK, now to the content of your post: I'm have not used the daytime running light tweak that you have implemented (I believe that it's called the "Scandinavian" arrangement), but I have spent time trying to understand how the rotary light switch (Euro-switch) on a mk7 works.

Here's a copy of how I believe that the euro-switch on a mk7 is wired:


The tricky bit about a euro-switch (IMO) is the fog-light. There is only one wire on the device to initiate both the front and rear fog lights! When I pulled my switch apart, I found that there was an imbedded IC (integrated circuit) connected to PIN 5. This IC was clearly the "smarts" that the BCM needs to determine which set of fogs to illuminate. When I put a CRO (Cathode Ray Oscilloscope) onto PIN 5, I found that there was a form of PWM (Pulse Width Modulation) happening! Not sure why this level of complication is necessary when a simple second wire would have sufficed - go figure!!

Anyhow, this is all an aside to confirming that the solid grey wire from pin 10 of the euro-switch is indeed the trigger wire to illuminate your new gauge when the instrument cluster is lit-up.

As for your observation that the Scandinavian arrangement dims the gauge lighting, there's not much that I can add - sorry. BUT you might want to consider the following two suggestions:

Suggestion 1. This is a long-shot, but recently I wrote-up tweak instructions that illuminated the instrument cluster during daylight hours. You could try implementing my tweak (click HERE) in the hope that it consequentially modulates the signal trace on PIN 10 on the euro-switch. I've implemented this tweak and it has had the affect of intensifying the illumination of other devices in the cabin during daylight hours (like the infotainment screen). If you look at the direction of the internal diode in picture above, it suggests that the BCM sends a voltage signal to the lamps within the euro-switch (i.e. the BCM provides the forward bias for the diode). Again, a long shot and I'm not sure if this option will work - but it might be worth a try!

Suggestion 2. if suggestion 1 doesn't work, a more plausible alternative solution is to turn-off the Scandinavian light tweak that you have implemented and to have the tail-lights perform the same function via "Leuchte programming". Now, I've not made the changes that I'm about to suggest, but you will doubtless be aware that it's possible to program any of the external lights on a mk7 using this process.

As you know, our cars down here don't have the steering wheel on the wrong side and our tail-lights here have separate lamps for the turn indicators (albeit, our ADRs are no better than your DOT rules). But, my assumption is that the parking light function (and therefore the lamps that will perform the rear DRLs function) on your car are the two inner tail-lights. If so, then the Leuchte channel sets of interest will be:

• Leuchte23SL HLC10 - Left tail-light (inner)
• Leuchte24SL HRA65 - Right tail-light (inner)

Fortunately, I have a 15 GTI SE 6MT model (NAR) in my database and the default settings for the two Leuchte channel sets that I have listed are:



If your car has the same default settings, then I suggest that you delete the Scandinavian setting and that you make the changes that I have shown in the table. To explain my notation for the "Dimmwert" channel, I'm not sure how bright you want the rear DRL function. If you want them to be fully illuminated, then use 100, else reduce this value as desired.

Please note that both these suggestions are untested
Good luck
Don

PS: If the default settings on your tail-lights are not as I have listed in the table (or if you want to use the outer pair), please provide a listing of the values in your car for the Leuchte Channel sets ( the outer tail-lights are: Leuchte20BR LA71 - left, and Leuchte21BR RC8 - right). I will work-out a new set of tweak instructions