Introduction
The THINKCAR CR17 is a powerful and user-friendly OBD2 diagnostic tool designed to help car owners and technicians quickly identify and resolve engine-related issues. It supports all 10 modes of OBDII tests, allowing for comprehensive vehicle diagnostics, fault code reading, and monitoring of various vehicle parameters. This manual provides detailed instructions on how to set up, operate, and maintain your CR17 device.

Image: The THINKCAR CR17 diagnostic tool shown with its retail packaging.
Setup
Unpacking and Initial Inspection
Carefully unpack your THINKCAR CR17 device and ensure all components listed in the 'Packing List' section are present and undamaged. If any items are missing or damaged, please contact customer support.
Connecting the Device
- Locate your vehicle's Data Link Connector (DLC) port. This port is typically located under the dashboard on the driver's side.
- Ensure your vehicle's ignition is in the 'OFF' position.
- Connect the OBD2 cable from the THINKCAR CR17 device firmly into the vehicle's DLC port. The device will power on automatically once connected, drawing power directly from the vehicle.
- Turn the vehicle's ignition to the 'ON' position (engine off).

Image: A hand connecting the OBD2 cable of the THINKCAR CR17 to a vehicle's diagnostic port, demonstrating the plug-and-play setup.
Operating Instructions
The THINKCAR CR17 features an easy-to-use 4-button keypad for navigation: Up, Down, OK (Enter), and Return. Once connected and powered on, the device will display the main menu.
Full OBDII Functions
The CR17 supports all 10 modes of OBDII tests, providing comprehensive diagnostic capabilities:
- Read Codes: Retrieves extensive current, pending, and permanent Diagnostic Trouble Codes (DTCs) from the vehicle's OBD system.
- Clear Codes: Erases detected fault codes and turns off the Check Engine Light (Malfunction Indicator Lamp - MIL).
- Live Data: Displays real-time graphical data streams from the vehicle's computer module(s) for easy analysis.
- Freeze Frame: Shows the vehicle's operating parameters recorded at the moment a DTC is detected.
- I/M Readiness: Checks the status of emission-related monitors to determine if the vehicle is ready for an emissions inspection (smog check).
- O2 Sensor Test: Performs tests on oxygen sensors to check fuel efficiency and vehicle emissions.
- On-Board Monitor Test: Reads the results of on-board diagnostic monitoring tests for specific components/systems.
- EVAP System Test (Component Test): Initiates a leak test for the vehicle's Evaporative Emission Control System.
- Vehicle Information (VIN): Retrieves the vehicle's identification number (VIN), calibration identification numbers (CINs), and calibration verification numbers (CVNs).
- DTC Lookup: Provides detailed definitions, causes, and tips for Diagnostic Trouble Codes.

Image: The THINKCAR CR17 screen showing the menu for various OBDII functions including Read Codes, Clear Codes, Live Data, and more.
Clearing the Check Engine Light (MIL)
After diagnosing and fixing an issue that triggered the Check Engine Light, you can use the CR17 to turn off the light:
- Navigate to the 'Clear Codes' function from the main menu.
- Confirm your selection. The device will erase the stored fault codes.
- The Check Engine Light will turn off. Note that the light will reappear if the underlying issue has not been resolved.

Image: The THINKCAR CR17 connected to a car, showing the process of erasing engine fault codes and the engine light turning off on the dashboard.
DTC Lookup
The DTC Lookup feature allows you to understand the meaning of diagnostic trouble codes without needing external resources. A 'T code' refers to a Diagnostic Trouble Code (DTC).
- From the main menu, select 'DTC Lookup'.
- You can either input a DTC manually or select a code that has been read by the device.
- The device will display a detailed description, potential causes, and troubleshooting tips for the selected DTC.

Image: The THINKCAR CR17 screen showing the 'DTC Lookup' interface, prompting the user to input a DTC.
Viewing Live Data
The Live Data function provides real-time information from your vehicle's sensors and systems.
- Select 'Live Data' from the main menu.
- Choose the parameters you wish to monitor.
- The data will be displayed graphically, allowing for easy observation of trends and values.

Image: The THINKCAR CR17 screen showing live data graphs (e.g., O2 sensor voltage) and the DTC Lookup input screen.
Maintenance
To ensure the longevity and optimal performance of your THINKCAR CR17, follow these maintenance guidelines:
- Cleaning: Use a soft, dry cloth to clean the device. Do not use abrasive cleaners or solvents.
- Storage: Store the device in a cool, dry place away from direct sunlight and extreme temperatures.
- Cable Care: Avoid bending or twisting the OBD2 cable excessively. Do not pull the cable to disconnect it; always grasp the connector.
- Software Updates: The device offers lifetime free software updates. Periodically check for and install available updates to ensure compatibility with the latest vehicle models and diagnostic protocols.
Troubleshooting
Common Issues and Solutions
- Device does not power on: Ensure the OBD2 cable is securely connected to the vehicle's DLC port and the vehicle's ignition is in the 'ON' position. Check the vehicle's fuse for the OBD2 port if the issue persists.
- Communication error with vehicle: Verify that your vehicle is OBD2 compliant and falls within the supported manufacturing years (American 1996+, European 2000+, Asian 2008+). Ensure the ignition is on. Try connecting to a different OBD2 compliant vehicle to rule out a device issue.
- Check Engine Light remains on after clearing codes: This indicates that the underlying fault has not been resolved. The device can only turn off the light; it cannot fix the problem. Address the root cause of the DTCs.
Compatibility Warnings
- The THINKCAR CR17 is not compatible with Peugeot, Renault, Citroen, and Ssangyong vehicles.
- It does not support Japanese cars that use the JOBD protocol.
- The device is designed for cars and is not supported for motorcycles or trucks.
Specifications
| Feature | Description |
|---|---|
| Model | THINKCAR CR17 |
| Item Type | Code Readers & Scan Tools (OBD2 Scanner) |
| Hardware Version | 2025 latest |
| Software Version | 2025 latest |
| Software Update | Lifetime Free Updates |
| Supported Protocols | KWP2000, ISO9141, J1850 VPW, J1850 PWM, CAN (Controller Area Network) |
| Supported Languages | English, French, German, Italian, Japanese, Polish, Portuguese, Russian, Spanish |
| Vehicle Coverage (American) | 1996-present (e.g., Chrysler, Ford, GM, Jeep, Lincoln, Buick, Cadillac, Chevrolet, Dodge, HM) |
| Vehicle Coverage (European) | 2000-present (e.g., Mercedes, BMW, VW, Audi, Opel, Ford, Land Rover, Jaguar, Volvo, Fiat, Lancia, Alfa Romeo, Saab, Seat) |
| Vehicle Coverage (Asian) | 2008-present (e.g., Honda, Mazda, Toyota, Nissan, Kia, Hyundai, Suzuki, Mitsubishi, Lexus) |
| Certifications | CE, FCC, RoHS |
| Origin | Mainland China |

Image: A diagram illustrating the vehicle compatibility by region (America, Europe, Asia) and manufacturing year, along with flags representing the 9 supported languages.
User Tips
- Always ensure your vehicle's ignition is in the 'ON' position (engine off) when performing diagnostics to establish proper communication with the vehicle's ECU.
- Before purchasing, double-check your vehicle's compatibility with the CR17, especially regarding its manufacturing year and make, to avoid known incompatibilities (e.g., Peugeot, Renault, Citroen, Ssangyong, JOBD protocol).
- While the device offers lifetime free software updates, these typically pertain to the device's firmware and existing functions. New vehicle models or advanced features might require different tools or subscriptions.
- If you encounter a 'T code' (Diagnostic Trouble Code), utilize the built-in DTC Lookup function for an immediate explanation and guidance.
Warranty and Support
The THINKCAR CR17 comes with a standard manufacturer's warranty. For specific warranty terms and conditions, please refer to the documentation provided with your purchase or contact the seller directly. For technical support, troubleshooting assistance, or inquiries about software updates, please reach out to THINKCAR customer service or the authorized reseller from whom you purchased the device.
Packing List
The following items are included in the THINKCAR CR17 package:
- THINKCAR CR17 OBD2 Diagnostic Tool
- User Manual (this document)

Image: The THINKCAR CR17 device and its packaging, representing the contents of the box.





