1. Introduction
The Thinkcar CR17 is an On-Board Diagnostics (OBD2) scanner designed to assist in diagnosing vehicle engine system issues. This device provides comprehensive OBD2 functions, enabling users to read and clear diagnostic trouble codes (DTCs), view live data, and perform various emission-related tests. It is compatible with most 1996 and newer US-based vehicles, 2000 and newer European vehicles, and 2008 and newer Asian vehicles that are OBDII compliant.

Image Description: A front view of the Thinkcar CR17 OBD2 scanner, showing its display screen and control buttons, connected to its OBD-II diagnostic cable. The device is black with a textured grip.

Image Description: The Thinkcar CR17 scanner held in a hand, with three smaller images below illustrating common vehicle problems: an open car hood indicating engine failure, exhaust fumes for a smog check, and a person struggling to start a car for ignition difficulty. This highlights the scanner's utility in diagnosing these issues.
2. Key Features and Functions
The Thinkcar CR17 provides a comprehensive set of OBD2 diagnostic functions:
- Read Codes: Retrieves generic (P0, P2, P3, and U0), manufacturer specific (P1, P3, and U1) codes, and pending codes.
- Clear Codes: Erases Diagnostic Trouble Codes (DTCs) and turns off the Malfunction Indicator Light (MIL).
- Live Data Stream: Displays real-time data from the vehicle's sensors in text or graph format.
- I/M Readiness Status: Checks the operational status of emission-related monitors.
- View Freeze Frame Data: Shows a snapshot of operating conditions at the time an emission-related fault occurred.
- O2 Sensor Test: Retrieves O2 sensor monitor test results for the most recently completed tests from the vehicle's on-board computer.
- On-Board Monitor Test: Retrieves test results for emission-related powertrain components and systems that are not continuously monitored.
- EVAP System Test (Mode $8): Initiates a test of the evaporative emission control system.
- Vehicle Information: Retrieves the Vehicle Identification Number (VIN), Calibration ID (CALID), and Calibration Verification Number (CVN).
- DTC Code Lookup: Built-in library for quick definition of diagnostic trouble codes.

Image Description: The Thinkcar CR17 scanner display, showing a menu with icons representing its full OBD2 functions, including Read Codes, Clear Codes, Live Data, Smog Check, Freeze Frame, O2 Sensor Test, On-board Monitor Test, EVAP Test, DTC Code, and Vehicle Information.
3. Setup and Connection
The Thinkcar CR17 is designed for 'Plug and Play' operation, requiring minimal setup.
3.1 Locating the OBD2 Port
The OBD2 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 have difficulty locating it.
3.2 Connecting the Scanner
- Ensure the vehicle's ignition is OFF.
- Plug the CR17's OBD2 connector into the vehicle's OBD2 port.
- Turn the vehicle's ignition to the ON position (engine can be off or running, depending on the test). The scanner will automatically power on.

Image Description: A hand plugging the Thinkcar CR17's OBD-II cable into a vehicle's diagnostic port, located under the dashboard. The scanner's screen is visible, displaying a 'DTC Lookup' prompt.
4. Operating Instructions
Once connected, the CR17 will power on and display the main menu.
4.1 Navigation
Use the UP and DOWN arrow buttons to scroll through menu options. Press the OK button to confirm a selection. Use the BACK button to return to the previous screen.

Image Description: The Thinkcar CR17 scanner display showing its main menu options: Diagnose, Lookup, Setup, and Help. To the right, a detailed breakdown of sub-options for each main category is presented, illustrating the device's menu structure.
4.2 Main Menu Options
- Diagnose: Accesses all OBD2 diagnostic functions.
- Lookup: Provides access to the DTC definition library.
- Setup: Configures device settings such as language and unit of measure.
- Help: Provides information about OBD and the tool itself.
4.3 Performing Diagnostic Functions
- From the main menu, select Diagnose and press OK.
- The scanner will establish communication with the vehicle. This may take a few moments.
- Once communication is established, a sub-menu of diagnostic options will appear.
4.3.1 Read Codes
Select Read Codes to display current, pending, and permanent Diagnostic Trouble Codes. Each code will be accompanied by a brief description.
4.3.2 Clear Codes
After addressing any vehicle faults, select Clear Codes. Confirm the action when prompted. This will turn off the Malfunction Indicator Light (MIL) on your dashboard. Ensure the underlying issue is resolved before clearing codes, as they will reappear if the fault persists.

Image Description: The Thinkcar CR17 scanner display, positioned in front of a car's dashboard. The image visually represents the process of resetting the check engine light, showing the light illuminated on the dashboard before the scanner's operation, and then off after the scanner is used.
4.3.3 DTC Lookup
From the main menu, select Lookup. You can manually enter a DTC to view its definition. Use the arrow buttons to change input values and select positions, then press OK to confirm.
4.3.4 Live Data Stream
Select Live Data to view real-time sensor data. This can be displayed as numerical values or graphical representations, useful for monitoring engine performance and identifying intermittent issues.
4.3.5 I/M Readiness Status
Select I/M Readiness to check if the vehicle's emission monitors have completed their diagnostic cycles. This is crucial for preparing for emission tests.
5. Specifications
- Model: CR17
- Dimensions: 7.4 x 17.5 x 4.6 cm (2.9 x 6.9 x 1.8 inches)
- Weight: Approximately 198 g (0.44 lbs)
- Supported Protocols: KWP2000, ISO9141, J1850 VPW, J1850 PWM, CAN
- Vehicle Coverage:
- America: Vehicles after 1996
- Europe: Vehicles after 2000
- Asia: Vehicles after 2008
- Supported Languages: English, French, Spanish, German, Russian, Italian, Portuguese
- Operating System (for PC software updates): Windows 7 and above

Image Description: The Thinkcar CR17 scanner display, accompanied by text indicating its vehicle coverage (America after 1996, Europe after 2000, Asia after 2008) and support for seven languages, each represented by its national flag (English, French, Spanish, German, Russian, Italian, Portuguese).
6. Troubleshooting
6.1 No Communication with Vehicle
- Verify that the ignition is ON.
- Check if the scanner's OBD2 connector is securely plugged into the vehicle's Data Link Connector (DLC).
- Confirm that the vehicle is OBDII compliant and falls within the supported manufacturing years (America after 1996, Europe after 2000, Asia after 2008).
- Inspect the vehicle's OBD2 port for any damage or loose pins.
- Try the scanner on another OBDII compliant vehicle to determine if the issue is with the scanner or the vehicle.
6.2 Scanner Fails to Power On
- Ensure the OBD2 connector is firmly connected to the vehicle's DLC. The scanner draws power directly from the vehicle.
- Check the vehicle's fuse for the OBD2 port (often labeled 'Cigar Lighter' or 'Accessory').
6.3 Inaccurate or Missing Data
- Ensure the vehicle's engine is running for live data streams, or the ignition is ON for other tests.
- Verify that the scanner's firmware is up to date.
7. Maintenance
7.1 Cleaning
Clean the scanner's casing with a soft, damp cloth. Do not use abrasive cleaners or solvents. Keep the screen free of dust and smudges for optimal visibility.
7.2 Storage
Store the device in a dry, cool environment, away from direct sunlight and extreme temperatures.
7.3 Software Updates
Periodically check the Thinkcar official website for available software updates. Updates can improve performance, add new features, and enhance vehicle compatibility. Typically, updates require connecting the scanner to a computer running Windows 7 or a newer operating system.
8. Warranty and Support
8.1 Warranty Information
The Thinkcar CR17 OBD2 Scanner comes with a 12-month warranty from the date of purchase, covering manufacturing defects and hardware quality problems not caused by human error. Please retain your proof of purchase for warranty claims.
8.2 Technical Support
For technical assistance, troubleshooting guidance, or warranty inquiries, please contact Thinkcar customer support through their official website or the contact information provided with your product packaging.





