LAUNCH X431

 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. 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 i...

 This procedure resets a Mercedes-Benz VGS3 / NAG2 (7G-Tronic EGS) transmission control unit using the LAUNCH X431 PRO5 on a bench setup. The goal is simple: clear anti-theft personalization, return the TCU to a neutral state, and prepare it for reuse or programming. The job must be done outside the vehicle with stable power and correct pinout wiring — no shortcuts. Workshop Reality Check (Before You Start) In real workshop conditions, this job fails for three reasons: Wrong pinout on VGS3 bench wiring Unstable power supply during erase Losing connection mid-process (internet or CAN drop) If any of these happen, the module can become unresponsive. Set up properly first, then start the software. Required Setup Tool: LAUNCH X431 PRO V Module: Mercedes-Benz VGS3 / NAG2 TCU (EGS 7G) Mode: Bench only (module removed from vehicle) Power: Stable 12V regulated supply (do not rely on battery) Network: Stable internet (required for anti-theft function) Wiring: Correct EGS...

  LAUNCH XPROG3 and X431 Key Programmer are often mentioned together as LAUNCH IMMO tools. So what are the differences between these two? Do they overlap in functionality? What scenarios do they each cater to? This article will introduce the differences between these two tools. First, let’s introduce the functions of LAUNCH XPROG3 and X431 Key Programmer. LAUNCH X431 Key Programmer Function: Read Transponder Generate Transponder Detect Frequency Detect Ignition switch coil signal Generate Remote (Launch X431 remote) Set type of super chip Set type of wireless remote Unlock Toyota smart key Compatible with Launch super chip and vvdi super chip Supports VAG ID48 96bit Cloning (Check how to purchase tokens). LAUNCH PROG3 Functions: 1. Read BMW engine ISN code. 2. Read/write BMW CAS4+ and FEM chips. 3. Read/write Audi fifth-generation steering column chips 4. Read/write EEPROM. 5. Read/write MCU. 6. VW Fourth-generation Dump Mode All Keys Lost. 7. Read eng...

 The LAUNCH X431 PRO5 is one of the most popular professional diagnostic scanners for workshops and advanced technicians. It supports vehicle diagnostics, ECU coding, immobilizer functions, online programming, EV diagnostics, and optional expansion modules. This FAQ guide answers the most common questions about X431 PRO5 functions, compatibility, subscriptions, Mercedes-Benz coding, VAG operations, EV truck support, and hardware troubleshooting. Does LAUNCH X431 PRO5 Require Extra Subscription for Key Programming? Many users ask whether Volkswagen and Mercedes-Benz key programming requires an additional subscription when using PRO5 together with X-PROG 3. The answer is no. When using the Launch X-PROG 3 together with the PRO5, the standard diagnostic software already supports these immobilizer and key programming operations. No extra IMMO software subscription is required for supported VW and Mercedes-Benz models. This makes the PRO5 a cost-effective option ...

 The LAUNCH X431 PRO3S+ Smartlink HD is a true professional-grade automotive diagnostic system built for workshops that need deep ECU access, multi-module scanning, and advanced bidirectional control. It is positioned far beyond basic OBD2 readers, offering full-system diagnostics across engine, ABS, SRS, transmission, and more. This tool is best suited for professional technicians and advanced users , not casual DIY repair. It delivers high diagnostic depth and wireless Smartlink HD flexibility, but comes with subscription costs, a learning curve, and occasional software or connectivity friction that must be expected in real workshop use. Verdict (Quick Decision Layer) Choose it if: You run a workshop or perform frequent multi-system diagnostics You need bidirectional control + ECU-level functions You require broad vehicle coverage + live data graphing Avoid it if: You only read/clear basic engine fault codes You want a plug-and-play DIY scanner You want zer...

 The LAUNCH X431 commercial vehicle software update includes more graphical interface options. Now, in addition to the topology map, you can also view the execution status of functions such as DPF Regeneration and Cylinder Deactivation graphically. Below, we will introduce the functions that support the graphical interface and the supported vehicle brands. What are the advantages of a graphical user interface? Component-Level Visualization: Understand systems at a glance. Interactive Control & Real-time Feedback: Perform tests with a simple tap. See system response as you operate. Smarter & Faster Fault Isolation: Pinpoint issues with confidence. Reduce guesswork and improve accuracy. Supports graphical interface features: Graphical DPF Regeneration Graphical ADBLUE Graphical Cylinder Deactivation Graphical Fuel Injector Coding Graphical Suspension Calibration Graphical Clutch Calibration Graphical APS (Compressed Air Power Supply) *More graphical fu...