TOPDON USA, a provider of diagnostic tools and technology solutions for automotive repair professionals and DIYers, announced Feb. 24 that its new ONE Series diagnostic platforms bring dealer-level technology to more technicians at a significantly lower price point.
The new series includes the TOPDON ONE and TOPDON ONE LITE, each offering a number of advanced auto repair solutions such as clear network mapping, smart repair guidance, and deep coverage across modern vehicle systems. The TOPDON ONE PLUS is slated to be available Spring 2026.
“Our new TOPDON ONE series is making dealer-level diagnostic technology accessible to more auto technicians,” said Chad Schnitz, vice president. “The ONE series, which was pioneered by our team of more than 250 engineers, features proprietary technology that integrates even more functionality into our products. The result is a lower-cost tool with more sophisticated features, making it ideal for DIYers and pro techs on a tight budget.”
The TOPDON ONE includes several advanced features, including dealer-level control over coding tasks, which are traditionally reserved for more expensive diagnostic tools. For faster diagnosis, ONE offers robust topology showing how systems communicate and where faults appear. Techs can also tap into pre-configured coding shortcuts on modern vehicles and adjust comfort settings, lighting options, and even convenience functions without manual coding. For common service tasks, the ONE supports more than 50 maintenance functions, including reset adaptations and calibrations used in routine service work.
TOPFIX AI, TOPDON’s built-in artificial intelligence tool, is included with the ONE as part of an active software subscription. TOPFIX AI is the company’s latest integrated technology feature that interprets fault codes and streamlines the diagnostic process. It also provides clear fault code explanations, likely causes, related symptoms, and structured repair steps in one view. Additional no-cost subscription functions include EOBD Diagnostics, Read/Clear DTCs, Live Data Stream, and Active Tests.

