Never mind.

 

I did full trim swap in my '14 TDI Executive for R-line interior and tried the switch swap as well, no luck with Auto Hold. Cleared fault codes, no new faults. I find it hard to believe that VW would use a specific ABS module for the US, when Auto Hold appears in the RoW. I'm going to look at ABS module coding; I'd love any input from other users. Thank you

 

Can anyone with 2013+ with auto hold verify Module 53 Parking Brake controller coding? Thank you!

 

Just got my 2014 Lux working today.

AS ALWAYS, YOUD DON'T HAVE TO DO IT, BUT IF YOU DO, DO IT AT YOUR OWN RISKS. I TAKE NO RESPONSIBILITY IF YOU BREAK YOUR CAR OR OTHER ISSUES ON THE ROAD.

I'm going to post how I find the way to enable it, just so others can correct me if I did something wrong.

I have it enabled, but I don't know if there are any other codes that I need to change to make the car behave the same as to the factory setting. I've done a little test, everything seems fine, but for now, mine doesn't switch to parking brake after 3 minutes on ABS. I'm thinking maybe it's not time based, it could be temperature based from the ABS pump.

Anyways, I started by collecting publically available ABS coding for all T3's all over the world. Divided them into 2 groups. Group 1 is for cars with auto hold coding, basically ROW T3, pre-2012 US T3, and 2012 Hybrid (OP's coding since OP’s car is plug-n-play, the coding must be there). Group 2 is US T3 after 2012. Then compared coding for discrepancies. I'd like to have a bigger data pool, but after a day of searching online, these are all I have so I decided to go with what I have.

The code I'm looking for needs to satisfy 3 criteria,

1. Needs to be mutually exclusive between groups. The code cannot re-appear in the other group.
2. Needs to be greater in group 1 than in group 2 since we are adding a function.
3. Better to be consistent.

You can see only byte 16 satisfies this condition. I know there might be other differences between different years, but I decided to try the coding now, if it doesn't work, I can change it back and do more research then. Risky time saving move…

Surprisingly, it worked! Now I’m going to drive slowly and avoid traffic for few days to see if the car behaves normally.

Here’s the steps in VCDS.

Step 1. Hit start/stop without pressing the brake pedal, engine should not be running.
Step 2. Open up channel 03 for ABS
Step 3. Fire up the long coding helper, no security access needed.
Step 4. Select “Byte 16”
Step 5. Change the coding from “01110011” to “01110111” in the binary area, don't forget to hit "enter" on your keyboard, then Byte 16 should read “77”

Step 6. Save it
Step 7. Now your TC, ESP, and ABS lights on your dash will flash, don’t worry, turn off the car.
Step 8. Start your engine, the 3 lights should be gone.
Step 9. Foot on the brake, click on seatbelt, you should be able to enable Auto Hold now.

AGAIN, I'm still testing this coding, please proceed with caution.

 

Just got my 2014 Lux working today. AS ALWAYS, YOUD DON'T HAVE TO DO IT, BUT IF YOU DO, DO IT AT YOUR OWN RISKS. I TAKE NO RESPONSIBILITY IF YOU BREAK YOUR CAR OR OTHER ISSUES ON THE ROAD. I'm going to post how I find the way to enable it, just so others can correct me if I did something wrong. I have it enabled, but I don't know if there are any other codes that I need to change to make the car behave the same as to the factory setting. I've done a little test, everything seems fine, but for now, mine doesn't switch to parking brake after 3 minutes on ABS. I'm thinking maybe it's not time based, it could be temperature based from the ABS pump. Anyways, I started by collecting publically available ABS coding for all T3's all over the world. Divided them into 2 groups. Group 1 is for cars with auto hold coding, basically ROW T3, pre-2012 US T3, and 2012 Hybrid (OP's coding since OP’s car is plug-n-play, the coding must be there). Group 2 is US T3 after 2012. Then compared coding for discrepancies. I'd like to have a bigger data pool, but after a day of searching online, these are all I have so I decided to go with what I have. The code I'm looking for needs to satisfy 3 criteria, 1. Needs to be mutually exclusive between groups. The code cannot re-appear in the other group. 2. Needs to be greater in group 1 than in group 2 since we are adding a function. 3. Better to be consistent. You can see only byte 16 satisfies this condition. I know there might be other differences between different years, but I decided to try the coding now, if it doesn't work, I can change it back and do more research then. Risky time saving move… Surprisingly, it worked! Now I’m going to drive slowly and avoid traffic for few days to see if the car behaves normally. Here’s the steps in VCDS. Step 1. Hit start/stop without pressing the brake pedal, engine should not be running. Step 2. Open up channel 03 for ABS Step 3. Fire up the long coding helper, no security access needed. Step 4. Select “Byte 16” Step 5. Change the coding from “01110011” to “01110111” in the binary area, don't forget to hit "enter" on your keyboard, then Byte 16 should read “77” Step 6. Save it Step 7. Now your TC, ESP, and ABS lights on your dash will flash, don’t worry, turn off the car. Step 8. Start your engine, the 3 lights should be gone. Step 9. Foot on the brake, click on seatbelt, you should be able to enable Auto Hold now. AGAIN, I'm still testing this coding, please proceed with caution.

Above is where I got the coding. Another CT member near me did the install, etc. Well, the photo did not move when I quoted...see page 3 of thread.

 

I can take a picture of my auto hold button if proof is needed...

 

I will have to check this on my 2012 Hybrid that didn't work with the new switch. I'll let you know tomorrow.

 

Did you ever email Ross Tech to see if they could help?

 

Was going to email Ross Tech if changing byte 16 didn't work.
But I think I will email them anyways just to verify.

 

It seems like even Uwe doesn't know:-s

Touareg 7P Auto Hold Retrofit

 

now one thing I still need to figure out is the green parking brake light does not turn on when auto hold is active and engaged.

 

It's not suppose to

 

My '12 that came factory equipped with Auto-hold, has only the orange light on the autohold portion of the parking brake button assembly illuminated, when the autohold is engaged. This is discussed in the owners manual. No parking brake warning lights, because it does not activate the parking brake on these models, it locks the ABS pressure.

 

Interesting that NA cars don't have this

See below picture that I stole from a Chinese forum, handbrake in red, auto hold in green

 

I know auto hold uses ABS, that's why I went in channel 03 instead of 53 to look for the coding. But the light uses parking brake's light.

 

Different countries, different laws.

 

As well, it's just a grab from an Internet forum, and we all know how accurate those are!

 

Try search "auto hold vw" on youtube, see every other VW's green lights. Even Kia does it this way.

Since US gets this text "park" instead of an icon, maybe there's something to do with the instrument cluster.

Interesting that everyone who wants to install the auto hold button as ROW cars don't want to have the proper light on the dash as ROW cars :-k ?

Don't know if you are interested, but here's link to the picture I posted. You can also see a lot of other people's threads about auto hold with green parking light. Don't think the whole forum of people would lie on something like this...

post #36
https://translate.google.com/transl...r.com.cn/bbs/viewthread.php?tid=15766473&page=4#pid338549160&edit-text=&act=url

 

Just curious, but in terms of the differences, has anyone gotten a dump of bytes from someone like roalco to compare to their US?

 

here's the pic showing auto hold working on my 2014 lux

 

Just ordered a switch for my 2012, thanks!

 

Just got it in, took all of 15 minutes to install it. Plug and play on my 2012.

 

Thanks. Special trim removal tool?

 

I've always used fingers only to remove center console trims on all the cars I've owned. It's the easiest compared to door trims.

Open ash tray and armrest.
Pop up the shifter boot.
Put the left hand under the passenger side front corner through the shifter opening. (under the wood trim, not the shifter bezel.)
Put the right hand under the same corner from ash tray side. Put your right palm on the side of the center console as leverage. Then that corner will pop up with some force. As soon as you pull up the first corner, the rest will be very easy to do. Don't forget to slide forward a little when removing it.

*update on several days of use - it is a leg saver in traffic!

 

I just used a thin bladed flat tip. Pry from the sides at the front of the panel. The trim is attached to a plastic frame underneath of it.

 

Thanks. Going to look on the German eBay. Another bean counter move not to give us these features.

 

Yikes. I did not go to medical school.

 

My switch showed up Saturday and had some time yesterday to install is.

Just want to say, taking out that center console is a PITA. I was able to get it, but had to use a small flat head in order to do so. My trim kit was worthless when trying to pop that thing off.

Anyway, installed the switch in my 13 and, like others, it was a no go. Had to adjust the ABS module using Yuyueyuyue's instructions. Once I changed byte 16, it now works perfectly.

Just want to say thanks to everyone in this thread, and especially Yuyueyuyue, for figuring out the coding.

 

:-D

 

I ordered one from the German eBay site. Should arrive by Oct. 1. A fellow member near me is going to help with the install and coding.

 

I still have mine for sale if anyone is interested. In like new condition. See here: http://www.clubtouareg.com/forums/f47/t3-parts-accessories-and-tires-for-sale-211057-3.html

 

I still have mine for sale if anyone is interested. In like new condition. See here: http://www.clubtouareg.com/forums/f47/t3-parts-accessories-and-tires-for-sale-211057-3.html

Good seller too!

 

Sorry I missed that. Would have purchased from you.

 

Thanks for figuring out the coding! Works on my 2013 TDI Sport. I think I had the switch installed but not doing anything for almost a year.

 

Thanks Yuyueyuyue! Coding worked for my 2012 Hybrid as well.