Hold Assist via VCDS

so has anyone got it working retrospectively. I await a successful activation complete with security code access.

 

My 8V doesn't have hold assist but if I push the brakes hard on a hill, and then take my foot off the brake I get about 2 seconds where the car won't move forwards or backwards (depending on the slope) unless I obviously release the clutch. Isn't this the same thing that'll be standard on all 8V's?

 

Nah, your brakes are staring to seize ;-)

 

Haha! That did cross my mind quickly at first actually. But no, it's not that. If I use the brake gently and then let go on a hill, I will roll. But applying hard pressure and then letting go, I'll hold for 2 seconds. The auto handbrake is off btw!

 

That's hill hold assist and all do it, even manuals. We are after auto hold

 

That's Hill Hold assist....

Auto Hold is totally different as it automatically applies the brakes when you come to a stop.

 

I never knew about that - is it in the manual? Must have missed it :-S

I do find the electric handbrake a PITA on hills as it's somehow not intuitive to apply in the first place. Will give hill hold assist a go

 

Now found it in the manual. Claims it's triggered by the time you hold the brakes on for, rather than pressure...

 

any further updates on this, we need a valid security code for the ABS Module

Address 03: ABS Brakes (J104) Labels: 5Q0-907-379.clb
Part No SW: 5Q0 907 379 AC HW: 5Q0 907 379 D
Component: ESC H75 0437
Revision: 00000000 Serial number:
Coding: 12F18AA220250A720179060501C92548510450806080A4F20259003485
Shop #: WSC 06314 790 00021
ASAM Dataset: EV_Brake1UDSContiMK100IPB 008020
ROD: EV_Brake1UDSContiMK100IPB_AU37.rod
VCID: 7DF789B6EC8604F6FF5-8028

 

Valid codes have been posted already. I took me 9 hours to extract them and they are 100% valid. Someone now needs to match them to their related adaptation channels.

Until Ross-Tech fully labels the Long Coding for the ABS module the chances of retro-activating this are gonna be slim... but there could be a chance that this is SVM. If this is the case then VCDS is never gonna be able to code it.

 

Yes, but if it has launch control it won't work once you do this.

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Good spot!

 

Well, I almost made that mistake in my S3 until I realised one night enjoying launch control!

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Wish VCDS be able to retrofit hold assist.

 

me 2

 

I managed to enable it completely on my 2014 A3 SB 1.6 TDI 6spd.
Missing link before seems to be security code "24990"
What I did was:

1)
03-ABS -> Security-16 -> Code "20103" -> Adaptation-10 -> AUTO HOLD functional status, always active

2)
03-ABS -> Security-16 -> Code "24990" -> Adaptation-10 -> AUTO HOLD functionality, active

3)
03-ABS -> Coding-07: (src: DJAlix post)

• Byte 08 = 03
• Byte 19 = C0
• Byte 23 = F7
• Byte 25 = 41 (Auto transmission) or 43 (manual transmission)

Seems to be working without issue, green handbrake light comes on when stopped, releases fine too. Unbuckle seatbelt, handbrake chirps on and the light turns red.

Driven about 1000 miles, no fault codes either.

 

Great work!

 

Can't wait to enable this! Thank you for figuring this out!

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Am gonna try this first thing in the morning. it would the icing on the cake if it works for me. thanks

 

Glad to help!
I hope this works for other people too, otherwise I might get scared that I did something strange to my abs module and destroyed things.

 

Bumping my own warning.

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So I tried this and it works, however will create an error message. Looks like the switch is required for this to work properly.

This is in a US spec car. Also didn't have the green light show up in the speedo area when it was working. Reverting back for now.





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just done it on my 2013 uk spec audi a3 SB

all works well. as expected. BIG BIG thanks. Not sure why all the long coding changes were required. but in three easy steps it all worked well.

green light appears when stationary, easy to drive away plus at parking postion when seat belt removed parking brake is applied.

just wondering how my mechanic is going to change the brakes, i guess hes gona need the computer to release the brakes next week. my discs are corrded on the rear.

GO FOR IT! -

 

I forgot to mention this, I had those errors too. I fixed them by changing:
03-ABS -> Adaptation-10 -> Monitoring of functional lights-Indicator light in AUTO HOLD button -> It was 7 I think, I set it to 0(seemed logical)

My euro-spec car shows a symbol instead of PARK, so I don't know how that's going to work.

 

Just wondering if there are any potential problems to having this without a switch to turn it off? What if the car broke down, ignition worked but engine wouldn't start and i needed to be towed/winched onto a truck? Could the brakes be switched off? Edge case i know but has happened before.

 

I've read that auto hold works by running the ABS pump somehow, which would stop running when the engine dies. Then the pressure would drop and the brakes would release (and ebrake should be automatically applied as usual and can be released with just the ignition on).

For the same reason, working on the brakes shouldn't be an issue I think.

But perhaps someone in the know should confirm this for peace of mind, I'm not sure really.

 

I just want to make sure I understand correctly, will this disable launch control (with S-Tronic) if hold assist is enabled?

 

Without the switch, this will be permanently on, not allowing you to turn off for launch control.

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Thank you for clarifying. Choices, choices!


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You could just keep the obd11 in the car and switch off too. I ended up just reverting back to stock without brake assist as it was causing some errors (prob didn't enable correctly) but also couldn't get use to the car holding the brakes automatically.

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Has anyone done this AND added the switch? I.e to keep launch control usable?

 

Interested in this reply. Fitting the actual switch I've seen the thread, looks mildly horrific.

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Hi,
@ rcnacura

I have exactly the same Problem, only in German
(Coding and Adapting is accepted, but at the end, AHold not working...)
at A3 sportsback, 2016, PFL, DSG, EPB, no ACC

May, can you post the number of your ABS/ESP ?
(and coding?)

I have 3Q0907379AA ABS System
may, it's only possible with the 5Q0 ... ABS System ???

Can somebody check for the ABS number, where it is working ???

Best Thanks!

 

---------------------------------------------------------------
03 Brakes 1

System description: ESC
Software number: 5Q0907379AA
Software version: 0457
Hardware number: 5Q0907379G
Hardware version: H31
Serial number: 6331300000036A
ODX name: EV_Brake1UDSContiMK100IPB
ODX version: 033001
Long coding: 13FF6A9234200A6D017B030081C629C8562C5080C08194B4024100588608

Trouble codes:
No trouble codes found

---------------------------------------------------------------

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Thanks,

Seems, what I guess is not the case...

I will go on with trying different codings...

 

Maybe, somebody can post a Original working Coding of ABS and ABS number, with

A3 8VA
2016
Pre-Facelift
DSG(S-Tronic)
HillHold Active
AutoHold Active
EPB
(No ACC?)

That may would be very helpful

Very Best Thanks

 

Does someone know the right coding for FL models / 3Q ABS pumps?

 

hello I have a3 8v fl but this code 24990 no work!!!!have a solution??

 

I have this from factory and i never have to use my handbook as it does it all auto