Richr

Yes. I had it on the BMWs too and I would love to see it on the S5. Like others, I also use the ACC for this purpose or the parking brake (once the car behind me has stopped) as a workaround. A little more involved but OK for now.

JLoft

I’m intrigued with this. My S5 is my first ever auto and I probably would like the hold function. And I even have DAP too.

So so what’s the logistics? Do you press the button each time you stop? Then the brake is auto applied? Does it change the stop/start function? I’m away from home so I have no easy access to owner’s manuals - US or otherwise.

i have VCDS, obdeleven, and Vag Can Pro so with the proper instructions I’m sure I could do the adaption.

AUDIQSS

I got the center console apart and have installed the auto hold button. However, the next step is to add two wires to the J519 module. BUT I CAN'T FIND IT. Does anyone know where it is located in the 2018 S5 Cabriolet? In the older S5 it was on driver's side under the lower instrument cover.

Please send pictures/videos/or anything that will help.

Thanks

Byron

channey13

I thought it was plug & play with a special wiring harness?

AUDIQSS

It pretty much is, IF you can figure out where to plug it in. So far 4rings.us has been UNABLE or unwilling to provide the information necessary to complete the job. They sent me information for a 2007 S5 Coupe which is far different than the 2018 S5 Cab I told them I was buying it for. I have been waiting since mid-June for the correct information. I have emailed them several times and they are not answering. Is it possible they are no longer in business or are they on summer vacation and don't care what happens to their business?

AUDIQSS

You turn it on and it stays on until you turn it off. The only thing I am unsure about right now is if you need to turn it on each time you start the car or if it has "memory" and stay on between starts.Of course you can turn it off any time you want. But unless I can find out where the J519 module is located, I won't be able to finish the install.

CFLQTRO

https://www.a5oc.com/threads/accessi...-module.25860/

Is that any help?

AUDIQSS

Not really, those are the same pages that they sent for the 2007 S5, but thanks anyway!

heymoe

Here is a thread about installing this kit in a Q7 which says the J519 is located at the left side panel of the driver side foot-well (includes wiring diagram).

https://www.audiworld.com/forums/q7-...rofit-2956539/

BUT I found this thread about someone trying to install Auto Hold in a B9 A4 which says the module is located in the passenger side glove-box area:

https://www.audi-sport.net/xf/thread...ectors.390286/

Here is another post from someone that installed a different kit in a B9 A5 which also says it's in the passenger side area also:

https://www.audi-sport.net/xf/thread...2#post-3224232


Hope this all help.. Interested in doing this myself so please document with photos as you figure it out. Thanks!

AUDIQSS

These were very helpful. Yes, on my 2018 S5 Cab LHD the J519 module is just behine the hood release pull handle. I was able to access it and install the wires into plugs 73a slot 17 and 73b slot 31.

The car is now back together, but I have not been able to finish the coding. There are three steps to the coding and I quote:

Stg 09 - Byte 15 - Bit 6 [0>1]

Stg 03 - Byte 18 - Bit 6 [0>1]
Stg 03 - Byte 30 - Bit 1 [0>1].

I was able to do Stg 09 as the Bits showed up and I clicked on Bit 6. But in Stg 03 when I go to Byte 18 and Byte 30, the Bits don't show up all I get is:

Byte 18 Binary 10011010
Byte 30 Binary 01011001.

And I don't know how to interpret/change them properly. Any ideas??

Stg 03 Byte 18

Stg 03 Byte 30