3 min read
Source: LAUNCH / X431Shop — September 16, 2026
LAUNCH has rolled out its September 16 software refresh for the X-431 diagnostic platform, touching three nameplates that rarely appear in the same release note: Tesla, Mercedes-Benz, and Daihatsu. The update bundles Tesla V10.67, Mercedes-Benz V50.58, and Daihatsu V20.80, adding new data streams, service and reset functions, and an optimized ADAS calibration routine.
For independent shops, the headline is the Tesla work. Aftermarket access to Tesla's diagnostic port has historically been fragmented, so a firmware-level push that improves data streams and connection diagrams on Model 3 and Model Y is worth paying attention to. Here's exactly what changed and why it matters for your bay.
What the September 16 X-431 Update Actually Covers
The release is split across three software modules rather than a single package. Tesla V10.67 adds and optimizes data streams and special functions for the Model 3, Model Y, Model S, and Model X. It also reworks the diagnostic port connection diagrams for pre-2021 Model 3 and Model Y vehicles — a small-sounding change that saves real time on older cars where the service connector location and wiring differs from the current generation.
Mercedes-Benz V50.58 focuses on the functions a shop uses daily: updated special functions and a refreshed RESET routine. These service resets cover the maintenance and adaptation tasks that follow routine work, so technicians running an oil change, brake service, or module replacement can complete the post-repair reset without switching tools.
Daihatsu V20.80 is the quiet one but arguably the most interesting for workshops doing collision or tire work. It adds a new Vehicle Information function, optimizes the ADAS calibration routine, and streamlines the communication structure of several systems. Daihatsu has a small footprint in North America but a large one in Asia-Pacific and emerging markets, where X-431 tools are widely distributed.
Why It Matters for Independent Shops and Technicians
Tesla diagnostics are the clearest win here. Most aftermarket platforms can read basic Tesla DTCs, but the quality of live data and special functions has lagged the dealer Toolbox. A vendor shipping an update that specifically targets Tesla data streams and port diagrams signals that aftermarket EV support is maturing, not stalling. If your shop already runs an Launch X-431 diagnostic platform, the update effectively expands the EV work you can take on without a separate subscription.
The Mercedes-Benz reset improvements matter for a different reason: throughput. Every minute a technician spends hunting for the right reset routine is billable time lost. Tightening those routines on a high-volume brand like Mercedes reduces the friction between finishing the physical repair and returning the car to the customer.
The Daihatsu ADAS change points to a broader trend. As forward-facing cameras and radar become standard even on budget and kei-class vehicles, diagnostic tools that can handle ADAS calibration are no longer a niche purchase. Shops that calibrate sensors in-house can keep that revenue instead of subletting it.
How to Install the Update on Your X-431
LAUNCH distributes the refresh through the same two channels as prior releases. Existing customers can renew via a Launch subscription card, or upgrade directly through the built-in Mall app on a supported X-431 device. There is no separate download step — the tool pulls the module update once the subscription is active, so confirm your subscription status before assuming the update has failed to arrive.
Two practical notes. First, verify your tool's serial number against the update's coverage list before relying on the new functions for a paying job. Coverage varies by region and hardware generation. Second, if your subscription has lapsed, the update stays locked until you renew — this is where keeping a current software update service running saves you from finding out mid-job that a newer vehicle isn't covered.
What to Expect Next
LAUNCH has settled into a roughly monthly cadence for X-431 coverage updates, and each release has leaned further into two categories: EV data depth and ADAS calibration. Expect the Tesla module to keep widening as more Model 3 and Model Y units fall out of warranty and into independent shops, and expect ADAS routines to spread across more budget brands as the hardware becomes universal.
For shops weighing the value of a current subscription, this release is a reminder that coverage is a moving target. A tool that shipped with your OBD2 scanner a year ago doesn't know about the newest module revisions. Whether you run Launch or another platform, the question isn't whether updates matter — it's whether you're paying to stay current or losing work to the shop down the road that is.
Written by James Mitchell, Senior Technical Editor at vxdas.com
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