The TOPDON ONE (900L-DGR) is a professional-grade bidirectional diagnostic tablet for workshops and experienced technicians. A 10.1-inch touchscreen running Android 12.0 and dual WiFi connectivity keep scans smooth and responsive, while the included ONE VCI supports J2534 pass-thru for dealer-level coding through the TOPDON RLink platform. With OE topology mapping, over 50 service functions and CAN-FD and DoIP protocol support, it offers comprehensive coverage for late-model vehicles.
Key features
- 10.1-inch touchscreen and dual WiFi: A responsive interface with a stable, high-speed wireless link that is 3x faster than Bluetooth, for smooth, non-lagging diagnostics.
- J2534 pass-thru: The ONE VCI functions as a pass-thru device with OEM diagnostic software, enabling dealer-level coding via RLink.
- OE topology mapping: Visualise the vehicle's ECU network, with zoom, pan and module highlighting, and real-time communication between modules.
- 50+ service functions: Includes ADAS calibration, DPF regeneration, TPMS reset, ABS bleed and throttle adaptation. Vehicle-specific functionality may vary.
- Advanced ECU coding: Full ECU coding and hidden-feature support for brands including BMW, VW, Audi, Benz, Porsche, Toyota and Nissan, with automatic backup and restore.
- VAG Guided Functions and SGW access: Step-by-step procedures, disassembly guidance and torque specifications for Volkswagen and Audi, plus FCA Autoauth, Nissan Autoauth and VAG SFD access.
- Flexible software updates: The first year of updates is included, with renewal plans available. Core diagnostic and bidirectional functions remain active without a subscription.
Ideal for
- Independent garages and workshops
- Module replacement and ECU coding
- ADAS, DPF and TPMS service work
- Diagnostics on newer CAN-FD and DoIP vehicles
Specifications
- Model number: 900L-DGR
- Screen: 10.1-inch touchscreen
- Operating system: Android 12.0
- Power source: Battery
- Connectivity: Dual WiFi, Bluetooth
- Protocols: CAN-FD, DoIP, J2534 pass-thru
- Service functions: 50+
- Security gateway access: FCA Autoauth, Nissan Autoauth, VAG SFD
- Vehicle coverage: OBD2 vehicles, including 2013+ BMW, 2016+ VW and Volvo, 2017+ Jaguar, 2018+ Mercedes-Benz, 2020+ GM and Chrysler
- Software updates: 1 year included, renewable
In the box
- 1 x TOPDON ONE
- 1 x ONE VCI
- 1 x Charger
- 1 x USB-C to USB-C cable
- 1 x USB-A to USB-C cable
- 1 x Diagnostic extension cable
- 1 x Carrying case
FAQs
Does it support J2534 pass-thru?
Yes. The included ONE VCI supports the J2534 standard for use with OEM software.
Does it still work without a subscription?
Yes. Core diagnostic and bidirectional functions remain active, though new vehicle data is not provided.
How does it connect to the vehicle?
Connect the ONE VCI to the OBD2 port and pair it with the tablet via dual WiFi or Bluetooth.
Shipping & Returns
- Free UK Delivery – We ship exclusively within the United Kingdom. Orders are processed within 1 business day, with estimated delivery in 5–8 business days after dispatch.
- 30-Day Returns – Returns are accepted within 30 days of delivery, subject to our Return & Refund Policy.
- Customer Support – Monday–Friday, 9 AM–5 PM (UK local time). Business days exclude weekends and UK bank holidays.