Volkswagenist
You are changing how many volts are required (measurement) to permit the car to stop. You're not actually changing anything to do with the flow of electricity so it is quite safe. Just don't make the value lower than default as could risk a flat battery.
Imagine you come to a halt and the car has 9v available. Because 9 is more than 7 (default) and you haven't pushed the disable S/S button the car engine stops. Had you changed the value from 7 to 12 then this logic test would not pass and so the engine would remain running.
That said given the higher range of excessive values allowed I think the temperature method would be better.
New Dubber
In my car 2016 Golf 1.4 TSI I found another way to disable.
19 CAN Gateway
Adaptation 10
than in channel list I have DEACTIVATION OF START STOP FUNCTION CHANNEL
and i have 4 option to chose
MODE NOT ACTIVE (default)
STOP RELEASE
STOP PROHIBITION NO START REQUEST
START REQUEST
SYSTEM MANFULCTION
looks like STOP PROHIBITION NO START REQUEST and START REQUEST is working to turn of SS system.
2016 VW GOLF 1.4 TSI DSG
New Dubber
ok, it is working until I restart the car and turning back to MODE NOT ACTIVE
2016 VW GOLF 1.4 TSI DSG
New Dubber
Hello guys!
My name is Alex, I'm 28 and from Austria...aside from being a student of medicine, I'm a car-guy and spend every second of my leisure time on cars and technical stuff in context with that.
So I've helped myself to a VCDS interface to diagnose and code cars as I've got a lot of friends driving VAG vehicles.
Last time I came across a Golf VII 1.6 TDI of a friend of mine....he suffers from the start/stop system always shutting down the car at traffic lights and stop & go traffic, which is quite an everyday sight here.
I got myself involved and tried different ways to shut down the stop&go behaviour...but none of these suceeded...
What I've tried:
Change coding of ECU (Start&Stop not installed or disabled - don't know what it says exactly), coding of the on-board supply controlling unit (disable Start&Stop) and also tried to find adaptation bytes for "start/stop working temperature" or "voltage"...which I couldn't find at all....
Asking the German forum for advice didn't give me more than a locked topic in the forum and a friendly message that no one would explain to me how I could threaten my car's operating licence by disabling the start&stop system....
So this led me to this forum...I hope you will be able to help me getting this task solved...
Thanks in advance!
Regards,
Alex
Volkswagen Fanatic
Alex: Hallo und herzlich willkommen im ForumOriginally Posted by drzikzak
It's good to meet someone (your friend) who despises Start Stop (SS) as much as me (and I hate it with a vengeance)! I've said before on numerous forums that IMO it's the most dangerous facility in a motor vehicle. I'm not particularly into conspiracy theories, but if I were, I would view SS as a cunning and sinister "sleeper function" (IMO) - being cleverly disguised as a climate saving feature!
So yes -I urge you to remove the function from your friend's car as quickly as possible!
OK - now to the techo bit! As you have discovered, SS is intimately entwined into lots of control modules on a mk7. On some VAG vehicles there is a "virtual master switch" to disable SS, but I do not believe that this is the case on MQB platform vehicles (I would be very happy to be proven wrong). If you try to disable the facility on one module, an error appears on multiple other modules. Pursuing this approach is the delicious futility of an impossible task - so my suggestion is, don't persevere with this technique!
Instead, I invite you to consider the following two alternatives:First, you could implement the more simple VCDS cable tweak (HERE). All these tweaks work by tricking the SS system into believing that some aspect of the car isn't able to support switching-off the engine; the temperature method does this by indicating that the temperature is too high and the voltage method does the same thing by indicating that the battery voltage is too low. Unfortunately, when if you implement the VCDS tweak, there will be a "tell" on the MFD whenever the car stops: what happens is that the MFD will display an "A" with a slash. This indicates that SS is active, but that it isn't able to engage because some aspect of the car prohibits the function. If you interrogate this "error", the MENU screen will display the first line in the picture below
Second, you could implement the "physical" solution: the SS auto kill switch. This involves building and installing a simple electronic device that I designed about a year ago. I've been using this device since then and it has never failed - every time that I turn-on the ignition, 5 seconds later SS is automatically disabled and I can re-engage the facility if I want later in the journey - not that I have ever done this! There is no "MFD tell" with this solution -all that the driver sees is the illumination of the LED indicator on the SS button on the center console. The instructions for my kill-switch are HERE.
Don
Last edited by DV52; 01-12-2016 at 09:11 AM.
Please don't PM to ask questions about coding, or vehicle repairs. The better place to deal with these matters is on-line, in the forum proper. That way you get the benefit of the expertise of the wider forum! Thank you.
New Dubber
Hello Don!
At first, let me thank you for the warm-hearted welcoming!
I've searched a lot for a solution and the simplest way to silence the Start/Stop system seems to be the voltage or temperature tweak...
That's what I've actually tried, but entering the CAN-Gateway control unit and having a look into adaption....offers me a sheer incountable amount of options in the drop-down menu...but none of those about start/stop voltage or temperature?!
I wouldn't totally rule out that I could have overlooked it among the hundreds of entries...
So voltage and temperature should be quite on top of all the entries - am I right?
Could it be that the values looked for aren't there at all or at another position in the list? So is it possible that this special car or engine type doesn't support the feature to knock down start/stop via VCDS?
Thanks a lot!
Regards,
Alex
Volkswagen Fanatic
Alex: I'm surprised that you can't find the adaptation channels in the Gateway module. Of course, your friend's car might not have both the temperature and voltagr channels, but it should have one of these.
In the hope that it helps, I took the following screen shots using the latest RT software from the Gateway module on my test bench set-up (it's my "virtual" mk7) which only has the temperature channels:
Notice the relative position of the pull-down box on the RHS of the picture.
But the better method for finding adaptation channels is to use the "search" box. Just enter the word "temperature" and you should get the two channels when you press the pull-down arrow (see picture below). If you don't have the temperature channels, search for the term "voltage".
Don
Please don't PM to ask questions about coding, or vehicle repairs. The better place to deal with these matters is on-line, in the forum proper. That way you get the benefit of the expertise of the wider forum! Thank you.
New Dubber
Thanks for this useful start stop tips. It works fine in my mk7 golf. Any idea how it can been done in my VW caddy 2016?
Volkswagen Fanatic
lonn2se: hi - Alas the 2016 Caddy is built on a PQ35 platform (it's not MQB like the mk7). If you can't find anything specific for the Caddy, try searching for the same tweak for the Beetle, Jetta, Scirocco which share the same platform
Don
Please don't PM to ask questions about coding, or vehicle repairs. The better place to deal with these matters is on-line, in the forum proper. That way you get the benefit of the expertise of the wider forum! Thank you.
New Dubber
can anyone confirm me if I can do that with 12.12 VCDS?
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