LAUNCH X431 Guide: VAG SFD Multifactor Authentication Setup

 Through collaborations with various manufacturers, the LAUNCH X431 diagnostic tool supports access to various vehicle gateways, such as VAG SGW, FCA SGW, Renault SGW, and more.

It is worth noting that recently (May 25, 2026), the Volkswagen Group (VAG) has introduced updated security protocols for accessing and unlocking protected vehicle functions via SFD (Vehicle Diagnostic Protection). To comply with these standards and prevent any service interruptions on Volkswagen, Audi, Skoda, or Seat vehicles etc., Multifactor Authentication (2FA) via Google Authenticator is now MANDATORY.


LAUNCH X431 Guide_VAG SFD Multifactor Authentication Setup

Start Date: May 25, 2026

Affected Systemsand Software: Every LAUNCH X431 diagnostic device used to activate or unlock VAG SFD.

The New Requirement

  • A Multifactor-Authentication (2FA) is now mandatory as part of the unlocking process and has been added via Google Authenticator.
  • Specifically, a temporary 6-digit verification code must be entered for each SFD unlocking. Access to the ECU is only granted after successful verification.
  • Users who have not yet linked a device will be required to complete a one-time setup during the unlocking process.

VAG SFD Multifactor Authentication (2FA) Step-by-step Guide

1) Start the SFD-Unlockprocedure


LAUNCH X431 Guide_VAG SFD Multifactor Authentication Setup

2) [Initial setup only] Scan the QR shown using the Google Authenticator app.


LAUNCH X431 Guide_VAG SFD Multifactor Authentication Setup

3) The Google Authenticator app shows a generated 6-digit verification code. The code is temporary.

4) Enter the verification code into the device used for the SFD-Activation


LAUNCH X431 Guide_VAG SFD Multifactor Authentication Setup

After successful verification, the vehicle diagnostic is unlocked.

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