28/01/2024
โผ๏ธ BIG ANNOUNCEMENT ๐ Snap on Diagnostic Tools ๐ช
VAG Secure Gateway -
Following the great news today that our tools can now access the VAG Gateway - I thought id post some more info to help understand what vehicles it effects. Your customers will no doubt twist on about how they couldn't do something on a golf and they'll mention the word 'FIREWALL' which is preventing their tool being able to communicate -
Some 2020 model year and newer VW Audi Group (VAG) vehicles, are fitted with the "SFD" system.
SFD stands for 'Schutz der FahrzeugDiagnose', which directly translates to Vehicle Diagnostic Protection - essentially it's a diagnostic FIREWALL.
SFD is fitted in the name of security and intercepts diagnostic requests and responses between the tool and the vehicle, and can block some diagnostic commands - particularly coding or adaptation commands which could make a change to the vehicle.
In order for these more advanced diagnostic requests to be allowed through, the control module you are connecting to will generate a 'challenge' token (an alphanumeric code which is unique to that diagnostic session). VAG's servers can use this to generate a 'release' token which, when presented back to the car, will unlock full access to that module for a set time period (typically 90 minutes).
Snap-on Wifi Enabled Diagnostic Tools, on the latest software (Must be version 23.4.2) can now get through the FIREWALL. But, customers will need to have a Snap-on Cloud Account (AltusDrive), their tool registered to their account and the VAG gateway account added to their Cloud Account in order to gain access.
Which models are known to be affected?
As of March 11th 2022), vehicles based on the MQB2020, MQBevo and MEB platforms are known to have SFD.
This list is not exhaustive though; other new models may also be affected:
MQBevo / MQB2020 Platforms
Audi A3/S3 Mk4 (2020-on)
SEAT Leรณn Mk4 (2020-on)
ล koda Octavia Mk4 (2020-on)
Volkswagen Caddy Mk4 (2020-on)
Volkswagen Golf Mk8 (2019-on)
Volkswagen Talagon (2021-on)
Cupra Formentor (2021-on)
Volkswagen Lamando (2022-on)
MEB Platform
Audi Q4 e-tron (2021-on)
Audi Q4 Sportback e-tron (2021-on)
Audi Q5 e-tron (2021-on)
Cupra Born (2021-on)
ล koda Enyaq (2020-on)
Volkswagen ID.3 (2019-on)
Volkswagen ID.4 (2020-on)
Volkswagen ID.5 (2021-on)
Volkswagen ID.6 (2021-on)
Volkswagen ID. Buzz (2022-on)
Any new / updated / face-lifted VAG model from 2020 onwards is likely to have the SFD system fitted.