Introduction
The LAUNCH CRP129 Premium is a professional diagnostic tool designed for automotive technicians and enthusiasts. It provides comprehensive diagnostic capabilities for four major vehicle systems: Engine, Transmission (A/T), Anti-lock Braking System (ABS), and Supplemental Restraint System (SRS/Airbag). This device supports all 10 test modes of OBD II, including enhanced OBD II Mode 6, and offers advanced reset functions for Oil Service Light, Electronic Parking Brake (EPB), Steering Angle Sensor (SAS), and Battery Management System.
With its intuitive interface, 4.0-inch TFT full-color display, and robust design, the CRP129 Premium allows users to efficiently read and clear diagnostic trouble codes (DTCs), view live data streams, freeze frame data, and I/M readiness status. It supports a wide range of vehicle makes and models, providing a powerful solution for diagnosing drive-ability issues and performing essential maintenance tasks.
Package Contents
- 1x LAUNCH CRP129 Premium Diagnostic Tool
- 1x OBDII Cable
- 1x Charging Cable (USB)
- 1x Carrying Bag
- 1x User Manual (this document)
Setup and Initial Use
Follow these steps to set up and begin using your CRP129 Premium diagnostic tool:
- Locate the OBD-II Port: The OBD-II (On-Board Diagnostics II) 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 locate it.
- Connect the OBDII Cable: Plug one end of the provided OBDII cable into the 16-pin connector on the CRP129 Premium device.
- Connect to Vehicle: Plug the other end of the OBDII cable into the vehicle's OBD-II port. The device will power on automatically, drawing power directly from the vehicle's battery.
- Power On: Once connected, the CRP129 Premium will power on. The screen will display the LAUNCH logo and then the main menu.
- Language Selection: If prompted, select your preferred language (English, Spanish, or French are supported).

Image: The CRP129 Premium diagnostic tool being held and connected to a vehicle's OBD-II port, illustrating the setup process.
Operating Instructions
The CRP129 Premium features a user-friendly interface with a 4.0-inch color display and intuitive button operation. Use the directional pad (up, down, left, right) to navigate menus, the "OK" button to confirm selections, and the "ESC" button to go back.

Image: Front view of the CRP129 Premium, highlighting its display and navigation buttons for operation.
Diagnostic Functions
- System Scan: Select "Diagnose" from the main menu. The tool will automatically identify the vehicle and scan for available systems (Engine, Transmission, ABS, SRS).
- Read Codes: Displays current, pending, and permanent Diagnostic Trouble Codes (DTCs) for the selected system. Each code comes with a brief description.
- Clear Codes: Erases DTCs from the vehicle's computer. Ensure the underlying issue is resolved before clearing codes to prevent them from reappearing.
- Live Data Stream: Displays real-time data parameters from the vehicle's sensors. Data can be viewed in numerical or graphical format. Key parameters include engine speed, vehicle speed, coolant temperature, O2 sensor position, MAF/airflow, and short/long term fuel trims.
- Freeze Frame Data: Captures a snapshot of sensor data at the moment a DTC was set, providing valuable information for diagnosis.
- I/M Readiness Status: Checks the status of emission-related monitors to determine if the vehicle is ready for an emissions test.
- Enhanced OBD II Mode 6: Provides access to test results for non-continuously monitored systems.
Reset Functions
The CRP129 Premium offers several special reset functions:
- Oil Service Light Reset: Resets the oil maintenance light after an oil change.
- Electronic Parking Brake (EPB) Release: Allows for safe deactivation and reactivation of the electronic parking brake system for brake pad replacement.
- Steering Angle Sensor (SAS) Reset: Calibrates the steering angle sensor after steering system repairs or alignment.
- Battery Reset: Performs battery registration or adaptation after replacing the vehicle's starter battery.
Software Updates
The CRP129 Premium supports lifetime free internet updates via USB 2.0. To update the software:
- Visit the official LAUNCH website (refer to the device's packaging or back label for the exact URL).
- Download and install the update tool software on your PC.
- Connect the CRP129 Premium to your PC using the provided USB cable.
- Follow the on-screen instructions in the update tool to download and install the latest software versions for your device.
Maintenance and Care
- Cleaning: Use a soft, dry cloth to clean the device. Do not use abrasive cleaners or solvents.
- Storage: Store the device in its carrying bag in a cool, dry place away from direct sunlight and extreme temperatures.
- Cable Care: Avoid bending or twisting the OBDII cable excessively. Always grasp the connector when plugging or unplugging.
- Software Updates: Regularly check for and install software updates to ensure optimal performance and compatibility with new vehicle models.
Troubleshooting
If you encounter issues with your CRP129 Premium, consider the following common troubleshooting steps:
- Device Not Powering On:
- Ensure the OBDII cable is securely connected to both the device and the vehicle's OBD-II port.
- Verify the vehicle's ignition is in the ON position (engine can be off).
- Check the vehicle's fuse for the OBD-II port (usually labeled "CIGAR" or "ACC").
- Communication Error:
- Confirm the vehicle supports the OBD-II standard (most vehicles from 1996 onwards).
- Ensure the ignition is ON.
- Try connecting to a different vehicle to rule out a vehicle-specific issue.
- Check for any loose connections in the OBDII cable.
- Incorrect Readings/Codes:
- Ensure the software is up to date.
- Verify the vehicle information (VIN, year, make, model) is correctly identified by the tool.
For persistent issues, refer to the official LAUNCH support resources or contact their customer service.
Technical Specifications

Image: The back of the CRP129 Premium device, displaying its technical specifications label.
| Feature | Specification |
|---|---|
| Display | 4.0" TFT full color display |
| Voltage Range | 12Vdc (via OBD interface) |
| Operating Temperature | 0°C to 50°C (32°F to 122°F) |
| Storage Temperature | -20°C to 70°C (-4°F to 158°F) |
| Dimensions | 196 x 106 x 32 mm |
| Weight | Approx. 680 g |
| Connectivity | Standardized 16-pin OBD connector, USB 2.0 |
| Supported Protocols | J1850 PWM, J1850 VPW, ISO9141-2, ISO14230-4, ISO 15765 (CAN) |
| Color | Red |
| Manufacturer | Launch Tech |
Support and Warranty
For technical support, product inquiries, or warranty information, please contact LAUNCH customer service. Details can typically be found on the official LAUNCH website or the product packaging. Keep your purchase receipt as proof of purchase for warranty claims.
Regular software updates are available for free to ensure your device remains compatible with the latest vehicle models and diagnostic protocols.





