Topdon One

The ONE is Topdon's newest, completely homegrown diagnostic scan tool. Packed with all of the functions you would expect fomr a professional level scan tool, the One series ups the game with some of the fastest data PID stream in the industry. View up to 4 PIDs in one graph or 12 individual graphs on screen at once. Pair that with an OE-style topology map which you see how every module is connected and exactly where the fault lies. TopFix AI interprets fault codes and streamlines the diagnostic process providing clear fault code explanations, likely causes, related symptoms, and structured repair steps in one view. When available, wiring diagrams and technical references appear alongside the data so technicians can move directly from fault identification to corrective action. Full module access and over 50 maintenance functions with coverage for more than 120 brands.

Compared to the Topdon One Lite, this tool has One-Click Personalization Customization and comes with a hard carry case instead of a soft case.

Features

• 50 maintenance functions, including resets, adaptations, and calibrations used in routine service work. Functions include Oil/BMS/EPB resets, DPF regeneration, Dynamic ADAS calibration, camshaft learning, relative compression, and more.
  ECU coding for more than 10 major vehicle brands, including BMW, Benz, VAG, Nissan, Toyota, Porsche, PSA and more.
• ECU Coding for 10+ brands, including BMW, Benz, VAG, Nissan, Toyota, Porsche, PSA and more.
• Security Gateway Support through AutoAuth for Stellantis and Nissan.
  CAN-FD and DoIP communication Protocols.
• Dual Wi-Fi: Faster Communication Between Tablet and VCI
• Diagnostic Reporting with Clear, Shareable Documentation
• Battery testing with BTMobile ProS (not included)
• J2534 Pass-Thru compliant interface (A compatible laptop and active OEM software subscriptions are required, DoIP systems not supported)
• One-Click Customization: Pre-Set coding shortcuts for 7+ brands including BMW, Benz, VAG, Nissan, Toyota, and more, letting you toggle common features with a single tap. Adjust comfort settings, lighting options, and convenience functions without manual coding. It’s a fast way to handle simple personalization tasks and keep jobs moving.

Online Function Notice
Certain functions require an active internet connection to operate properly, including Topology Map, ECU Coding, One-Click Customization/Driver Preference, TopFix AI, Security Gateway Support, and the latest vehicle and software updates.

Content

• TOPDON ONE
• Wireless VCI
• Charger
• Diagnostic Extension Cable
• USB-C to USB-C Cable
• USB-A to USB-C Cable
• Quick User Guide
• Packing List
• Carrying Case