Topdon One Plus | Diagnostic Tool | Car

Diagnostic functions

The Topdon One Plus offers diagnostic functions for all electronic vehicle systems and supports both basic OBD2 diagnostics and extensive brand-level system diagnostics.

• Read and clear fault codes: Reading and clearing DTCs in all available vehicle systems.
• Live datastream: Real-time display of sensor and parameter data from the ECUs.
• EOBD diagnosis: Full support of generic EOBD/OBD2 modes for emission-related diagnosis.
• Bidirectional control: Controlling actuators and components to test operation and signals.
• Advanced OE Topology: Visual display of vehicle systems and their intercommunication.
• Topology Map: Graphical topology map of the vehicle's ECU architecture.

Service and maintenance functions

The diagnostic tool supports more than 50 service and maintenance functions. Available functions may vary by vehicle make, model, and year.

Engine and drivetrain

• Oil service reset: Resetting the oil service interval after an oil change.
• Throttle valve learning: Learning the throttle valve position after cleaning or replacement.
• Camshaft learning: Learning procedure for camshaft position sensor.
• Injector coding: Coding injectors after replacement for correct injection quantities.
• Particulate filter regeneration: Forcing a DPF regeneration to burn accumulated soot.
• EGR valve learning: Learning the EGR valve after cleaning or replacement.
• Turbo learning: Learning a variable turbo after replacement.
• Adblue reset: Resetting the Adblue/SCR system after refilling or service.
• Nox sensor reset: Resetting NOx sensor values after replacement.
• Air-fuel ratio reset: Resetting lambda and fuel adaptation values.
• Cooling system bleeding: Procedure for bleeding the cooling system.
• Coolant service: Reset and service procedure for the coolant system.
• Start-stop system reset: Resetting the start-stop system.

Transmission and drivetrain

• Transmission adaptation: Adaptation of the automatic transmission after maintenance.
• High voltage system deactivate/activate: Safe switching on and off of the HV system in hybrid and EV vehicles.
• Resolver sensor calibration: Calibration of the electric motor resolver sensor.

Brake and stability systems

• ABS Brake system bleeding: Bleeding the ABS hydraulic system.
• Electronic parking Brake service: Opening and closing the EPB for brake pad replacement.

Steering and chassis

• Steering angle sensor calibration: Calibration of the steering angle sensor (SAS) after alignment or work.
• Air suspension calibration: Calibration of the air suspension system.
• Tire pressure sensor reset: Resetting and learning of TPMS sensors.
• Tire Size Reset: Adjust tire size configuration in the ECU.

Body and comfort systems

• Window Calibration: Initialize and calibrate electric windows.
• Sunroof Initialization: Initialize the sunroof after battery or motor replacement.
• Seat Calibration: Calibrate electrically adjustable seats.
• Footwell Module Reset: Reset the footwell/comfort module.

Electrical and safety systems

• Battery Registration: Register a new battery in the energy management system.
• Airbag Reset: Clear fault codes and reset the airbag system.
• Adaptive Headlight Reset: Calibrate adaptive headlights.
• Rain and Light Sensor Calibration: Calibrate the rain and light sensor behind the windshield.

Other service and maintenance functions

• Odometer Reset: Reset odometer data in the ECU.
• Speed Limiter and PTO Configuration: Configure speed limiter and power take-off.
• Transport Mode: Activate or deactivate transport mode.

Special features and capabilities

The Topdon One Plus features several advanced functions that distinguish the device within the range.

• ECU Programming (4 Systems): Programming ECUs on 4 systems for BMW, Mercedes-Benz, and VAG.
• J2534 Pass-Thru Programming: Supports J2534 Pass-Thru for programming ECUs with OEM software.
• ECU Coding: Extensive ECU coding for BMW, Mercedes-Benz, VAG, Porsche, Nissan, PSA, Jaguar Land Rover, Ford, Volvo, and Toyota.
• Driver Preference (One-Click Customization): Customize vehicle settings with one click for BMW, Mercedes-Benz, VAG, Porsche, Nissan, PSA, Jaguar Land Rover, Ford, Volvo, and Toyota.
• TopFix AI: AI-assisted repair assistant for diagnostic and repair advice.
• Security Gateway Access: Access to secured vehicle systems behind a Security Gateway.

Supported vehicle brands

The reader supports a wide range of vehicle brands worldwide, divided into the following regions.

• European: Abarth, Alfa Romeo, Aston Martin, Audi, Bentley, BMW, Bugatti, Citroën, Cupra, Dacia, DS Automobiles, Ferrari, Fiat, Iveco, Jaguar, Lamborghini, Lancia, Land Rover, MAN, Maserati, Maybach, Mercedes-Benz, Mini, Opel, Peugeot, Porsche, Renault, Rolls-Royce, Saab, Seat, Skoda, Smart, Vauxhall, Volvo, Volkswagen
• Asian: Acura, Daihatsu, Genesis, Honda, Hyundai, Infiniti, Isuzu, Kia, Lexus, Mahindra, Maruti Suzuki, Mazda, Mitsubishi, Nissan, Perodua, Proton, Scion, SsangYong, Subaru, Suzuki, Tata, Toyota
• American: Buick, Cadillac, Chevrolet, Chrysler, Dodge, Ford, General Motors, GMC, Holden, Jeep, Lincoln
• Chinese: Aeolus, BAIC Motor, BYD, Chery, Denza, Dongfeng, Emgrand, Englon, Exeed, Geely, Gleagle, Great Wall, Hafei, Jetour, Karry, Maple, Maxus, MG, Rely, Riich, Roewe, Senova, Sokon, SWM, Venucia, Weiwang

Optional additions and expansions

The Topdon One Plus can be expanded with additional hardware to increase functionality.

Hardware modules and accessories

• BTMobile ProS: Bluetooth battery tester for testing batteries and the charging/starting system (included as a free addition).

License information

The Topdon One Plus comes with 2 years of free software updates. Certain advanced features and vehicle coverage depend on an active license. After the license expires, the device generally remains usable with the already installed software.

• License period: 2 years of free software updates included with purchase.
• Software updates: Updates add new vehicles, systems, and features.
• Advanced features: Topology Map, ECU coding, ECU programming, Driver Preference, TopFix AI, and Security Gateway access require an active license.
• Always free features: 50+ maintenance functions, bidirectional control, read/clear fault codes, live data stream, EOBD diagnosis, and IMMO remain always available.
• After license expiration: The reader continues to work with existing functions and installed vehicle coverage.

Package Contents

• 1x Topdon One Plus reader
• 1x ONE VCI interface
• 1x Diagnostic Extension Cable
• 1x Charger with EU and UK plug
• 1x USB-C to USB-C cable
• 1x USB-A to USB-C cable
• 1x Quick User Guide
• 1x Packing List
• 1x Gift Card (BTMobile ProS & TopScan Master)
• 1x BTMobile ProS battery tester
• 1x TopScan Master
• 1x Storage case

Technical specifications