Features

• Increase Revenue with More In-House Repairs
  With professional ECU programming for BMW and VAG vehicles across four core vehicle systems (ECM, SRS, ABS, and TCM), the TOPDON ONE Plus diagnostic tool gives you OE-level capabilities. Program blank ECUs, update ECU versions, recover lost ECU data, perform ECU data backup and more to increase your job value and service potential.
• One-Click Customization and Pro-Grade Coding
  Expanding your shop’s capabilities, the ONE Plus supports ECU Coding* for 10 leading brands. Match components, activate/deactivate functions, and optimize vehicle efficiency. With one-click customization integrated into the coding workflow, technicians can complete vehicle modifications and make driver preference changes with ease.
• Find Faults Faster with OE Topology Mapping
  Stop digging through lists of modules and systems and start seeing the big picture. The ONE Plus features advanced OE Topology Mapping, giving you a “command center” view of the entire vehicle network. With color-coded system statuses and DTC numbers, you can visualize complex troubleshooting flows and identify faulty modules at a single glance.
• Cut Diagnostic Time with TopFix AI Intelligence
  TopFix, a cutting-edge AI assistant, works like a repair partner by your side, analyzing trouble codes and delivering data-driven repair guidance in seconds. From identifying root causes to providing verified fixes and technical resources like diagrams, TopFix AI turns real-world diagnostic experience into an instant, actionable roadmap for every repair.
• Dealer-Level Diagnostic Workflow
  Elevate your diagnostic game by using the ONE’s VCI as a J2534 Pass-Thru device. The VCI operates as a professional pass-thru programming tool that syncs with OEM diagnostic software**, supporting 14 vehicle brands. It turns your Windows PC into a multi-brand factory workstation without a staggering investment.
• Serve Next-Gen Vehicles and Future-Proof Your Shop
  With integrated CAN-FD and DoIP protocols, plus authorized support to FCA SGW, VAG SFD, and Renault/Nissan gateways***, the ONE Plus is the ultimate ‘all-access pass’ for the modern workshop. No matter how new or protected the vehicle is, you’re always in control.
• Built for the Demands of a Busy Workshop
  The ONE Plus is built to support the real pace of professional repair work. With OE-level full-system diagnostics, bidirectional control, and more than 50 essential service functions, technicians can diagnose issues faster, complete service procedures efficiently, and keep vehicles moving through the shop.
• Unlock More Work with Integrated IMMO Capabilities
  With built-in IMMO**** support, technicians can complete key-related services for Asian and domestic vehicles from their ONE Plus. They’ll be able to add new keys, program keys after all keys are lost, delete old keys, and more, making your shop a total solution for your customers’ service needs.
• Analyze Live Data with a 12-Parameter Display
  Monitor up to 12 live data parameters at once to see how vehicle systems interact in real time. With multiple graphing and combined data display options, technicians can compare sensor readings, identify irregular patterns, and diagnose intermittent faults faster without switching between screens.
• Buy 1, Get 2 – More Tools, More Value
  Every ONE Plus kit comes with a FREE TopScan Master Bluetooth dongle for ultra-portable smartphone diagnostics and a FREE BTMobile ProS battery tester for battery health checks. From the engine bay to the palm of your hand, you’re fully equipped.

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* Coding functions may vary by make, model, and year.
** OE software purchased through the manufacturer’s website. DoIP system diagnostics are not supported when used with OEM software.
*** Access to SGW-protected systems may require OEM credentials where applicable.
**** Key programming function is only for Asian and domestic vehicles.