1. Introduction
The V526 OBD2 Scanner is a professional diagnostic tool designed to help you maintain your vehicle's engine system. It provides lifetime free EOBD code reading, real-time data streaming, I/M readiness testing, and a variety of other diagnostic functions to ensure your car remains in optimal condition. Its user-friendly interface and robust design make it an essential tool for both automotive enthusiasts and professionals.
2. Key Features
- Full OBD II Functions: Supports Read Codes, Erase Codes, I/M Readiness, Vehicle Info, Data Stream, Mode 6 detection, Oxygen sensor test, Mode 8 detection, Fault code query, Playback function, 35901 fault code library, Battery voltage reading, and View freeze frame.
- User-Friendly Interface: Features a 2.8-inch color LCD screen with visual indicators (Red for action needed, Orange for attention, Green for good condition).
- Live Data Stream: Displays real-time data and curves for parameters such as Car Speed, Load Value, Engine Coolant Temp, and Engine RPM.
- One-Click I/M Readiness: Quickly checks if the vehicle is ready for an emission test.
- Handheld Design: Compact, powerful, and plug-and-play for easy use.
- Durable Construction: Equipped with a bright acrylic screen protective cover and soft, comfortable silicone buttons.
- Connectivity: Standard 16-Pin heavy-duty lead OBDII plug.
- Performance: Upgraded CPU for high-speed processing.
- Multi-Language Support: Built-in multi-language user manual.
3. Setup Guide
The V526 OBD2 Scanner is designed for simple plug-and-play operation. Follow these steps to get started:
- Locate the OBDII Port: The OBDII port is typically located under the dashboard on the driver's side of the vehicle. Refer to your vehicle's owner's manual if you cannot find it.
- Connect the Scanner: Plug the 16-pin OBDII connector of the V526 scanner firmly into your vehicle's OBDII port.
- Turn On Ignition: Turn your vehicle's ignition to the 'ON' position (do not start the engine unless instructed by a specific diagnostic procedure). The scanner will power on automatically.
- System Initialization: The scanner will perform a brief system initialization. Once complete, the main menu will appear on the 2.8-inch color screen.

4. Operating Instructions
Navigate through the scanner's functions using the 'UP', 'DOWN', 'LEFT', 'RIGHT' arrow keys, 'OK' button to confirm, and 'EXIT' button to go back.
4.1. Reading and Clearing Diagnostic Trouble Codes (DTCs)
- From the main menu, select 'Read DTC' to view current, pending, and permanent diagnostic trouble codes.
- To clear codes, select 'Clear DTC'. Confirm your choice when prompted. Clearing codes will turn off the Check Engine Light (MIL) and erase all diagnostic data.

4.2. I/M Readiness Test
This function checks the readiness of the emission-related monitoring systems on the vehicle.
- Select 'I/M' from the main menu.
- The scanner will display the status of various monitors (e.g., MIL, DTC, MIS, FUE, CCM, CAT, EVAP, OSH, EGRS) as 'OK' (ready) or 'INC' (incomplete).

4.3. Live Data Stream
View real-time operational data from the vehicle's sensors.
- Select 'Live Data' from the main menu.
- You can view data in numerical format or as real-time graphs for parameters like Engine Coolant Temp, Load Value, Engine RPM, and Car Speed.

4.4. Freeze Frame Data
When an emission-related fault occurs, the ECU records certain vehicle parameters at the time of the fault. This data is called Freeze Frame Data.
- Select 'Freeze Frame' from the main menu.
- Review the recorded data to understand the conditions under which the fault occurred.
4.5. Vehicle Information
Access information such as Vehicle Identification Number (VIN), Calibration ID (CALID), and Calibration Verification Number (CVN).
- Select 'Vehicle Info' from the main menu.
- The scanner will display the available vehicle information.
4.6. Other Functions
The V526 scanner also includes:
- O2 Sensor Test: Retrieves O2 sensor monitor test results for the most recently completed tests from the vehicle's on-board computer.
- Mode 6 Test: Retrieves test results for emission-related powertrain components and systems that are not continuously monitored.
- Mode 8 Test: Allows control of the on-board system, test, or component.
- DTC Lookup: Provides definitions for diagnostic trouble codes.
- Battery Voltage: Displays the current battery voltage of the vehicle.


5. Maintenance
- Cleaning: Use a soft, damp cloth to clean the scanner's exterior. Do not use abrasive cleaners or solvents.
- Storage: Store the scanner in a dry, cool place away from direct sunlight and extreme temperatures.
- Cable Care: Avoid bending or twisting the OBDII cable excessively to prevent damage.
- Software Updates: While the EOBD code reading is lifetime free, check the manufacturer's website periodically for any available software or firmware updates to ensure optimal performance and compatibility with newer vehicles.
6. Troubleshooting
- No Power: Ensure the OBDII connector is securely plugged into the vehicle's port. Check the vehicle's battery for sufficient charge.
- Link Error: Verify the ignition is in the 'ON' position. Ensure the OBDII connector is properly seated. Try the scanner on another compatible vehicle to rule out a vehicle-specific issue.
- Cannot Read Codes: Confirm the vehicle is OBDII compliant (most vehicles from 1996 onwards in the US, 2001 for petrol cars in Europe, 2004 for diesel cars in Europe).
- Screen Issues: If the screen is unresponsive or displays errors, try disconnecting and reconnecting the scanner. If the issue persists, contact support.
7. Specifications
| Feature | Specification |
|---|---|
| Model | V526 |
| Display | 2.8-inch Color LCD Screen |
| Connector | 16-Pin OBDII Standard Plug |
| Processor | Upgraded CPU |
| Buttons | Soft Silicone Buttons |
| Dimensions (L x W x H) | 15.50 cm (6.10 inch) x 9.00 cm (3.54 inch) x 7.80 cm (3.07 inch) |
| Origin | Mainland China |
| High-concerned chemical | None |

8. Warranty and Support
The V526 OBD2 Scanner is designed to be a reliable diagnostic tool. It offers lifetime free EOBD code reading, ensuring you have access to essential diagnostic information without recurring fees. For technical assistance or inquiries, please refer to the contact information provided by your retailer or the product's official support channels.
