1. General Notice & Safety Precautions
General Notice
For your own safety and the safety of others, and to prevent damage to the equipment and vehicles, read this manual thoroughly before operating your diagnostic tool. The safety messages presented below and throughout this user's manual are reminders to the operator to exercise extreme care when using this device. Always refer to and follow safety messages and test procedures provided by vehicle manufacturer. Read, understand and follow all safety messages and instructions in this manual.
Safety Precautions and Warnings
To prevent personal injury or damage to vehicles and/or the scan tool, read this instruction manual first and observe the following safety precautions at a minimum whenever working on a vehicle:
- Always perform automotive testing in a safe environment. Wear safety eye protection that meets ANSI standards. Keep clothing, hair, hands, tools, test equipment, etc. away from all moving or hot engine parts.
- Operate the vehicle in a well-ventilated work area: Exhaust gases are poisonous.
- Put blocks in front of the drive wheels and never leave the vehicle unattended while running tests.
- Use extreme caution when working around the ignition coil, distributor cap, ignition wires and spark plugs. These components create hazardous voltages when the engine is running.
- Put the transmission in PARK (for automatic transmission) or NEUTRAL (for manual transmission) and make sure the parking brake is engaged.
- Keep a fire extinguisher suitable for gasoline / chemical / electrical fires nearby. Ignition is on or the engine is running.
- Keep the scan tool dry, clean, free from oil / water or grease. Use a mild detergent on a clean cloth to clean the outside of the scan tool, when necessary.
2. Setup
2.1 Connecting to Vehicle
The iSmartDiag 510PRO scanner normally powers on whenever it is connected to the data link connector (DLC).
- Turn the ignition off.
- Locate the data link connector (DLC). The DLC is generally located under the dash on the driver's side of the vehicle.
- Connect the iSmartDiag 510PRO scanner with the DLC.
- Switch the ignition key to the ON position.
- The scanner automatically boots up.
IMPORTANT:
Never try to provide power for the scanner from USB connection when the scanner is communicating with a vehicle.
2.2 App Download, Registration, and Login
The iSmartDiag 510PRO operates via a mobile application on iOS and Android devices.
- Download the iSmartDiag App from the App Store (iOS) or Google Play (Android).
- Open the iSmartDiag App, then register for a new account or log in with an existing one.
- Enter your email and the activation code provided with your device to complete registration.

2.3 Bluetooth Connection
The iSmartDiag 510PRO connects to your mobile device via Bluetooth.
- After plugging the iSmartDiag 510PRO into your vehicle's OBDII port, open the iSmartDiag app.
- Tap the one-click connect button within the app to pair with the device.
- For optimal Bluetooth connectivity, always pair through the app instead of using phone settings, and stay within 33 feet of the scanner.

2.4 Providing Power to Scanner with USB Cable (for updates)
The iSmartDiag 510PRO also receives power through the USB port when it is connected to a PC for updating software and transferring saved files.
- Insert the small end of the USB cable to the USB Port at the right side of the scanner and the large end to computer.
- Press the power switch of the scanner to power it on.
3. Operating
3.1 Application Overview
When the iSmartDiag app is launched and connected to the scanner, the Home screen opens. This screen shows all applications loaded on the unit. Following applications are preloaded into the scanner:
- Diagnostic: Accesses OBDII/EOBD functions and full system diagnostics.
- Maintenance: Accesses special reset functions.
- Data Management: Manages recorded data and diagnostic reports.
- Update: Manages software updates for the scanner and vehicle models.
3.2 OBDII / EOBD Diagnostics
When the Diagnostic application is selected from the Home screen, the scanner starts to detect the communication protocol automatically. Once the connection has been established, a menu that lists all of the tests available on the identified vehicle displays. Menu options typically include:
- Read Codes
- Erase Codes
- Live Data
- View Freeze Frame
- I/M Readiness
- On-board Monitor Test
- Component Test
- Vehicle Information
- Modules Present
- Unit of measure
3.2.1 Read Codes
The Read Codes menu lets you read stored codes, pending codes and permanent codes found in the control unit. Typical menu options include: Stored Codes, Pending Codes, Permanent Codes.
To read codes from a vehicle:
- From the Diagnostic Menu, select Read Codes.
- Select Stored Codes / Pending Codes / Permanent Codes and confirm.
- A code list including code number and its description displays.
3.2.2 Erase Codes
To erase codes:
- From the Diagnostic Menu, select Erase Codes.
- Follow the on-screen instructions and answer questions about the vehicle being tested to complete the procedure.
- Check the codes again. If any codes remain, repeat the Erase Codes steps.
3.2.3 Live Data
The Live Data menu lets you view, record and playback real-time PID data from the electronic control module. Menu options typically include: View Data, Record Data, Playback Data.
3.2.3.1 View Data
The View Data function allows real-time viewing of the vehicle's electronic control unit's PID data, including sensor data, operation of switches, solenoids and relays. Menu options typically include: Complete Data, Custom Data, Graph Data Set, Unit of measure.
To view all live PID data:
- From the Diagnostic Menu, select Live Data.
- Select View Data or Complete Data Set from the list.
- To view PID graph if the PID gives a numeric reading, select the PID.
3.2.3.2 Custom Data List
The Custom Data List menu lets you minimize the number of PIDs on the data list and focus on any suspicious or symptom-specific data parameters.
To create a custom data list:
- Select Custom List from the menu.
- Select or deselect desired PIDs.
3.2.4 Record Data
The Record Data function is used to record PIDs to help diagnose intermittent drivability problems that can't be determined by any other method. Menu options typically include: Complete Data, Custom Data, Graph Data Set, Unit of measure.
CAUTION:
Do not operate the scanner while driving; always have two persons in vehicle when recording - one to drive and the other to operate the scanner.
3.2.5 Playback Data
The Playback Data is used to playback recorded PID data.
To playback data:
- Select Playback Data from the Menu.
- Select a memory area that is marked with an asterisk (*).
3.2.6 View Freeze Frame
Freeze Frame displays freeze frame data, a snapshot of critical vehicle operating conditions automatically recorded by the on-board computer at the time of the DTC set. It is a good function to help determine what caused the fault.
To view freeze frame data:
- Select View Freeze Frame from the Diagnostic Menu.
- Scroll through data to select lines.
3.2.7 Read I/M Readiness Status Data
I/M Readiness option allows to view a snapshot of the operations for the emission system on OBDII / EOBD vehicles. I/M Readiness is a useful function used to check if all monitors are OK or N/A. The vehicle's computer performs tests on the emission system during normal driving conditions.
To retrieve I/M Readiness Status data:
- From the Diagnostic Menu, select I/M Readiness.
- If the vehicle supports both types of monitors, a screen for monitor type selection displays. Select a monitor type.

3.3 Full System Diagnostics
The iSmartDiag 510PRO provides OE-level full system diagnostics, offering quick access to all available systems on major car models in Asia, Europe, the United States, and China. It performs functional tests, retrieves diagnostic information, and real-time data on various vehicle control systems.
- Engine Systems: Identify car problems and turn off the engine light.
- Transmission System: Troubleshoot transmission-related codes.
- DPF System: Retrieve/clear DPF related codes, reset DPF indicator light, micro-control injection rate, and burn off collected particles.
- ABS System: Control braking force to prevent wheel lock-up.
- Airbag System (SRS): Read/clear codes and turn off the airbag warning light.
3.4 28+ Advanced Reset Functions
The iSmartDiag 510PRO provides 28 powerful maintenance functions through an intuitive menu, allowing you to handle various service needs efficiently.
- Oil Reset Service: Perform reset for the Engine Oil Life system.
- EPB Service: Maintain the electronic braking system, assisting with brake fluid control, opening/closing brake pads, and setting brakes after replacement.
- ABS Bleeding: Bleed the brake system to restore ABS brake sensitivity when ABS contains air.
- BMS Service: Evaluate battery charge state, monitor close-circuit current, register battery replacement, and activate the rest state of the vehicle.
- TPMS Service: Display sensor IDs from the vehicle's ECU, input TPMS sensor replacement IDs, and test sensors.
- Other Resets: A/C Learn, Adblue reset, DPF Service, EGR Reset, Injector Coding, NOX Reset, Steering Angle, Throttle Reset, AJUSTE, TMS Adaption, Change Language, Change Tire, Clutch Adaptation, EVAP Test, Gear Learn, GPF, Stopstart, Sun Roof, Suspension, TCM Oil Reset, Turbo, Windows Door.

3.5 Bi-Directional Control (Active Tests)
The iSmartDiag 510PRO is a bi-directional scanning tool that sends commands to the vehicle from the smartphone to perform a variety of active tests to check its working condition, while observing the resultant data for troubleshooting and quick fixes. This feature quickly identifies problems and effectively reduces diagnostic time for mechanics, and active testing of different systems enhances driving safety.
- EVAP test
- Compression test
- Turning the radiator fan on/off
- Air conditioning clutch on/off
- Fuel pump
- Window/mirror/door lock test
- Pump and valve test
- Interior and exterior light test
- Sound horn test

3.6 Additional Functions
- Auto VIN Auto Scan: Supports Auto Scan or Auto Diagnose for fast full system scans. Note: Auto scan is not available for all vehicles; menu can be selected manually.
- 4 in 1 Real-Time Data Graph: Powerful 4-in-1 real-time data graphic viewing function to visualize RPM, speed, oil temperature, etc.
- Support CAN FD & DoIP Protocols: Works on CAN FD Protocol Vehicles (e.g., GM vehicles after 2020) and is compatible with BMW E/F/G Chassis, Jaguar, Land Rover vehicles.
- Diagnostic Report: Send diagnostic reports via email to drivers or VIDENT technicians.
4. Maintenance
4.1 Software Update
The iSmartDiag 510PRO offers lifetime free updates to ensure compatibility with new vehicle models and functions.
To update the scanner software, you need the following tools:
- iSmartDiag 510PRO Scanner
- Update Tool (VD30 or equivalent, available from the manufacturer's website)
- PC or laptop with USB Ports and Internet access
- USB cable
Minimum PC/laptop requirements:
- Operation System: All Windows systems, Win 98 to Win 10.
- CPU: Intel PIIl or better
- RAM: 64MB or better
- Hard Disk Space: 30MB or better
- Display: 800×600 pixel, 16-bit true color display or better
- Internet Explorer 4.0 or newer
Update Procedure:
- Download the update tool and update files from the official website (www.vdiagtool.com) and save them to your computer.
- Unzip the update tool file. Follow instructions on the computer screen to install the tool and driver.
- Double-click the update tool desktop icon to launch the application.
- Click 'Setting' and select the language you want to update.
- Press and hold the HELP key on the scanner. Do not release it, then connect the USB cable to the scanner and PC.
- When the scanner enters Update Mode, the application will detect it automatically.
- Tick the file to update and follow on-screen prompts.

4.2 Printing Data
The Print Data function is used to print test results through a computer. This function is not available when the device is in Update Mode.
To print test results:
- Download and launch the VD30 (or equivalent) update tool.
- Activate the application by clicking the Print Button from the menu.
- Connect the scanner to the computer with the USB cable supplied to power it on.
- Select Print Data from the home screen of the scanner. If all recorded data is to be printed, select Print All Data.
- Load data to the edit box of the update tool. You can then print the data.
4.3 System Setup
This section illustrates how to program the scanner to meet your specific needs. When the Setup application is selected, a menu with available service options displays. Menu options typically include:
- Language
- Configure Monitors
- Unit of measure
- Key Beep Set
- Diag Beep Set
- Tool self-test
- Update mode
- About
4.3.1 Select Language
To configure system language:
- From the Home screen, select Setup.
- Select a language from the list.
4.3.2 Configure Monitors
This menu allows users to configure the monitors required to test spark ignition and compression ignition, the number of monitors to pass diagnosis, and restore the default settings.
Menu options typically include: Spark IGN Required Monitors, Compression IGN Required Monitors, Allowed INC Monitors, Reset Factory Default.
4.3.3 Tool Self-test
This function allows you to check if the LCD display and the operation of the keypad and LED are working correctly. Typical menu includes: Display Test, Keypad Test, LED Test.
5. Troubleshooting
General Troubleshooting Tips
- "No freeze frame data stored!": This message indicates that no freeze frame data was detected by the vehicle's on-board computer.
- "DTC definition not found!": If a definition could not be found (SAE or Manufacturer Specific), the scanner displays this message. Refer to your vehicle's service manual for the specific DTC.
- Connection Issues: Ensure the scanner is properly plugged into the OBDII port and your mobile device's Bluetooth is enabled and connected via the iSmartDiag app, not phone settings.
User Tips
- Language Support: The device supports 15 languages (English, Spanish, French, German, Portuguese, Swedish, Chinese, Traditional Chinese, Russian, Japanese, Korean, Thai, Slovak, Hungarian, Italian). Polish and Dutch are not listed. For specific language availability beyond the default English, Spanish, Portuguese, Russian, and French, contact the seller.
- Vehicle Compatibility: The scanner supports over 110 car brands and 10000+ models from 1996 to 2025. For specific compatibility with your vehicle, it is recommended to provide your Vehicle Identification Number (VIN) to the seller before purchase.
- Control Unit Coding: The manual focuses on diagnostic and reset functions. For advanced control unit coding capabilities, consult the product specifications or contact technical support directly.
6. Specifications
| Attribute | Value |
|---|---|
| Model Name | iSmartDiag510pro OBD2 Scanner |
| Communication Interface | OBD-II, Bluetooth |
| Software Update | Yes (Lifetime Free Update) |
| Hardware Version | NEWEST |
| Software Version | NEWEST |
| Display | 2.8" TFT color display (App-based interface on mobile device) |
| Working Temperature | 0 to 60°C (32 to 140°F) |
| Storage Temperature | -20 to 70°C (-4 to 158°F) |
| Power Supply | 8-18V vehicle power, 12V 0.5A |
| Supported Protocols | J1850-PWM / J1850-VPW / ISO9141 / KWP2000 (ISO 14230), CAN (Control Area Network ISO 11898), CAN FD & DoIP |
| Dimensions (L×W×H) | 7.8cm x 5.3cm x 2.1cm |
| Item Weight | 96g |
| Material | Plastic |
| External Testing Certification | CE |
| Support Systems | Android and iOS Systems |
| Multilingual Automotive Diagnostics | English, Spanish, German, French, Portuguese, Swedish, Italian, Russian, Japanese, Korean, Hungarian, Thai, Slovak, Simplified Chinese and Traditional Chinese. (No Polish and Dutch language) |

7. Warranty & Support
Limited One Year Warranty
VIDENT warrants to its customers that this product will be free from all defects in materials and workmanship for a period of one (1) year from the date of the original purchase, subject to the following terms and conditions:
- The sole responsibility of our company under the Warranty is limited to either the repair or, at the option of our company, replacement of the scan tool at no charge with Proof of Purchase. The sales receipt may be used for this purpose.
- This warranty does not apply to damages caused by improper use, accident, flood, lightning, or if the product was altered or repaired.
- We shall not be liable for any incidental or consequential damages arising from the use, misuse, or mounting of the scan tool. Some states do not allow limitations on how long an implied warranty lasts, so the above limitations may not apply to you.
Technical Service
Lifetime Free Technical Service is provided for the iSmartDiag 510PRO. For any technical inquiries or support, please contact the seller or refer to the official VIDENT website.
A user manual in PDF format is available. You can visit the official website (www.vdiagtool.com) to download the user manual in various languages including German, Spanish, and French.
PDF User Manual Reference: User manual (PDF)