Do you need to retrofit an Auto-Hold button to use this? My A3 e-tron has no button, just a blank space in front of the armrest:
Scan and maps shown here:
Thursday,07,December,2017,14:36:25:29905 VCDS -- Windows Based VAG/VAS Emulator Running on Windows 7 x64 VCDS Version: 184.108.40.206 (x64) HEX-NET CB: 0.4409.4 Data version: 20171026 DS285.1 www.Ross-Tech.com VIN: WAUSPBFF8JA063478 License Plate: E-TRON-1 Mileage: 17km-10mi Repair Order...forums.ross-tech.com
... 77=0 80=0 ... 79=2 9B=K 2K Caddy 7E=7 98=H 7H T6 88=A 83=3 A3 Passat-NMS ... A2=Z AB=Z ... ------------------------------ ... 94=0 66=0 ... 9C=8 8D=V 8V RS3(rdw) AA=F 7D=F FF RS3(nar) ... BF=Z 91=Z ...
I would urge you to log your deceleration rates to determine if you are running to the problem that we have been struggling with for years on this platform. I've been trying to resolve this issue myself on multiple TTRS and RS3 track cars. Several competitive racers I know were forced to sell their vehicles due to this limitation as it was not permitting them to be competitive in their classes.
The ABS system on these cars is limited to roughly 1.1 G in braking (as logged, not as displayed in the dash), we have been able to address this on the golf platform by adjusting brake bias and adding more rear brake pressure but these settings are not available on the TTRS/RS3.
I started a thread here to try and get the issue resolved:
I have a 2018 TTRS (8S) that I actively track and am looking for a what to change the brake bias to allow for more rear brake pressure. On other VW/Audi cars I could adjust the "Brake Boost" and "Hydraulic Brake Booster" values which allows for more rear bias. Unfortunately on the 8S TTRS these...forums.ross-tech.com
No, it is:
Byte 00 <> Byte 17
Byte 02 <> Byte 18
Byte 04 <> Byte 19
Byte 14 <> Byte 24
Byte 15 <> Byte 25
Byte 16 <> Byte 26