1. Introduction
The LAUNCH X431 CRP919E Lite is a professional-grade bidirectional scan tool designed for comprehensive vehicle diagnostics. This device provides extensive capabilities for reading and clearing diagnostic trouble codes, viewing live data, performing active tests, and executing various maintenance and reset services across a wide range of vehicle makes and models. This manual provides essential information for setting up, operating, and maintaining your CRP919E Lite scan tool.
2. Product Overview and Package Contents
The CRP919E Lite features a robust design with a 7-inch touchscreen and an intuitive Android 8.1 operating system, ensuring efficient and user-friendly operation.

Image: The LAUNCH X431 CRP919E Lite scan tool displayed with its protective carrying case.
2.1. What's in the Box
Verify that all the following items are included in your package:
- LAUNCH CRP919E Lite Main Unit
- US/UK/EU Power Plug
- Main Diagnostic Cable
- DC Charge Cable
- User Manual
- Quick Guide
- Protective Carrying Case

Image: A visual representation of the LAUNCH CRP919E Lite package contents, including the main unit, cables, plugs, and documentation.
3. Setup and Initial Configuration
3.1. Powering On the Device
- Ensure the device is sufficiently charged. Connect the DC Charge Cable to the device and a power source using the provided power plug if necessary.
- Press and hold the power button located on the side of the device until the screen illuminates.
3.2. Language Selection
Upon first startup, you will be prompted to select your preferred language. The device supports 11 languages, including English, Spanish, French, German, Russian, Portuguese, Italian, Chinese, Korean, and Japanese.
3.3. Wi-Fi Connection
To access software updates and online features, connect the device to a Wi-Fi network:
- Navigate to the "Settings" menu on the main screen.
- Select "Wi-Fi" and choose your desired network.
- Enter the password if prompted and connect.
3.4. Software Updates
It is recommended to update the software upon initial setup to ensure you have the latest features and vehicle coverage.
- Ensure the device is connected to Wi-Fi.
- From the main menu, tap on the "Upgrade" icon.
- Follow the on-screen prompts to download and install available updates. The device includes 2 years of free software updates.
4. Operating the Device
4.1. Connecting to the Vehicle
- Locate the vehicle's OBD2 diagnostic port, typically under the dashboard on the driver's side.
- Connect the Main Diagnostic Cable to the CRP919E Lite and then to the vehicle's OBD2 port.
- Turn the vehicle's ignition to the "ON" position (engine off).
4.2. AutoVIN and AutoScan
The AutoVIN and AutoScan functions streamline the diagnostic process:
- From the main menu, tap the "Diagnose" icon.
- Select "AutoVIN" or "AutoScan". The device will automatically identify the vehicle's VIN and initiate a comprehensive scan of all diagnosable Electronic Control Units (ECUs).
- This function is primarily effective on vehicles manufactured from 2006 onwards.

Image: The LAUNCH CRP919E Lite screen displaying an AutoVIN scan in progress, identifying vehicle information.
4.3. Full System Diagnostics
The CRP919E Lite performs comprehensive diagnostics across all available vehicle systems, including but not limited to:
- Engine Control Module (ECM)
- Anti-lock Braking System (ABS)
- Supplemental Restraint System (SRS)
- Transmission Control Module (TCM)
- Electronic Parking Brake (EPB)
- Tire Pressure Monitoring System (TPMS)
- Steering Angle Sensor (SAS)
- Air Conditioning (A/C)
- Battery Management System (BMS)
- Electronic Stability Program (ESP)
- Body Control Module (BCM)
- Powertrain Control Module (PCM)
Within these systems, you can:
- Read Codes: Retrieve Diagnostic Trouble Codes (DTCs) to identify specific issues.
- Clear Codes: Erase DTCs after repairs have been completed.
- View Live Data: Monitor real-time sensor data in text, graph, or combined formats.
- Freeze Frame Data: View a snapshot of sensor data at the moment a DTC was set.
- ECU Information: Access control unit details such as part numbers and software versions.

Image: A graphic illustrating the CRP919E Lite connected to a vehicle, performing diagnostics across various systems like ABS, BMS, EPB, and TPMS.
4.4. Live Data Stream Analysis
The device offers advanced live data stream capabilities:
- Multiple Display Modes: View data in text, graph, or a combined 4-in-1 graph format for easy comparison.
- Record and Playback: Capture live data streams for later review and analysis, aiding in the diagnosis of intermittent issues.
4.5. Bi-directional Control (Active Tests)
Bi-directional control allows the scan tool to send commands to vehicle ECUs to test specific components or subsystems. This helps in quickly pinpointing faulty components without extensive disassembly.

Image: The CRP919E Lite screen showing active test options, with a car graphic illustrating the command and receive process for component testing.
Examples of active tests include:
- Fuel Pump On/Off
- Cycle A/C Clutch
- Open/Close Windows
- Radiator Fan Activation
- Injector Buzz Test
- Headlamp Adjustment
- Window Wipers Settings
- Horn Assessment
- ABS Pump Motor Test
- EVAP Purge/Seal Test
Note: Available active tests vary by vehicle make, model, and year.
4.6. Special Functions and Reset Services
The CRP919E Lite provides over 32 common maintenance and reset services. These functions help in performing routine vehicle maintenance and adaptations.

Image: A collage of icons representing various maintenance services available on the CRP919E Lite, such as Oil Reset, ABS Bleeding, and EPB Reset.
Key services include:
- Oil Reset Service: Resets the engine oil life system after an oil change.
- EPB Electronic Park Brake Reset: Resets the electronic parking brake system after brake pad replacement.
- Injector Coding: Codes new injector numbers into the ECU when replacing injectors.
- Throttle Adaptation: Initializes throttle actuators to return learned values to default.
- SAS Steering Angle Sensor Reset: Performs calibration and clears records for the steering angle sensor.
- ABS Bleeding: Bleeds the brake system to restore ABS brake sensitivity when air is present.
- Windows Calibration: Performs window matching to recover ECU initial memory.
- Battery Matching (BAT): Registers new battery replacement.
- Diesel Particulate Filter (DPF) Reset: Initiates DPF regeneration.
- TPMS Reset: Resets tire pressure monitoring system sensors.
- Gear Learning: Performs crankshaft position sensor adaptive learning.
- EGR Adaptation: Adapts the Exhaust Gas Recirculation valve.
- Suspension Matching: Adjusts vehicle height sensor calibration.
- NOx Sensor Reset: Resets the NOx sensor after replacement.
- AC Initialization: Initializes the air conditioning system.
- AdBlue Reset: Resets the urea system.
- AFS Headlamp Reset: Resets the Adaptive Front-lighting System.
- A/F Reset: Adjusts air/fuel ratio parameters.
- Coolant Bleeding: Removes air from the cooling system.
- Seat Calibration: Calibrates seat memory functions.
- Sunroof Initialization: Initializes sunroof memory.
- Language Change: Changes the display language of the vehicle's instrument cluster.
Note: The availability of specific functions depends on the vehicle's make, model, and year.
4.7. FCA AutoAuth Access
The CRP919E Lite supports secure access to FCA (Fiat Chrysler Automobiles) vehicles from 2017 and newer, allowing diagnostics and special functions on models like Chrysler, Dodge, Jeep, and Fiat. To use this feature:
- Ensure the scan tool has the latest software updates and is connected to the internet.
- When prompted on the tool for SGW (Security Gateway) vehicles, enter your AutoAuth credentials.
4.8. OBD2 Test Modes
The device supports all 10 test modes of OBDII/EOBD/CAN standards for vehicles manufactured from 1996 to 2025:
- Read Codes
- Clear Codes
- Live Data Stream
- Freeze Frame
- On-Board Monitor Test
- O2 Sensor Test
- Read Vehicle Information
- Component Test
- I/M Readiness
- EVAP System Test
5. Maintenance
5.1. Software Updates
Regular software updates are crucial for maintaining optimal performance and expanding vehicle coverage. The CRP919E Lite offers 2 years of free updates via one-click Wi-Fi. After this period, the device will continue to function, but new updates will require a subscription.
5.2. Battery Care
The device is equipped with a 6000 mAh lithium-ion battery. To prolong battery life:
- Avoid extreme temperatures.
- Charge the device regularly, but avoid overcharging for extended periods.
- If storing the device for a long time, ensure it has a partial charge (around 50%).
The device also features a real-time battery voltage monitor to help you keep track of your vehicle's electrical system.
5.3. Cleaning the Device
Use a soft, damp cloth to clean the screen and exterior of the device. Avoid using abrasive cleaners or solvents.
6. Troubleshooting
6.1. DTC Help and Code Search
When the CRP919E Lite displays an error code, the "DTC Help" feature can provide definitions and potential repair guidance. You can also use the "Code Search" function to find more online resources and tips.
6.2. Diagnostic History and Reports
The device automatically records diagnostic processes, allowing for later review and analysis. Diagnostic reports can be generated, shared via Wi-Fi or email, and printed for documentation or customer records.
6.3. Online Feedback
If you encounter unresolved issues or have suggestions, the "Online Feedback" feature allows you to submit detailed reports directly through the device, including interactive data logging sessions.
6.4. Expansion Modules
The CRP919E Lite is compatible with optional expansion modules, sold separately, to enhance its capabilities:
- BST360 Battery Tester: For comprehensive battery health, starting system, and charging system tests.
- X431 i-TPMS TSGUN: For professional TPMS diagnostics, sensor activation, relearn, and programming.
7. Specifications
| Feature | Specification |
|---|---|
| Operating System | Android 8.1 |
| Display | 7-inch Touchscreen (1024*600 pixels) |
| Memory | 3GB RAM + 32GB ROM |
| Battery | 6000 mAh Lithium Ion |
| Connectivity | 2.4GHz Wi-Fi, USB-C |
| Dimensions | 16.6 x 13.8 x 4.8 inches |
| Item Weight | 5.79 pounds |
| Supported Protocols | ISO9141-2, ISO14230-2, ISO15765, SAE-J1850 VPW, K/L-Line, SAE-J1850PWM, ISO 11898, SAE J2610, etc. |
8. Warranty and Support
LAUNCH provides comprehensive support for the CRP919E Lite scan tool:
- Warranty: A 5-year brand warranty covers manufacturing defects.
- Software Updates: Enjoy 2 years of free software updates from the date of purchase. After this period, the device remains functional, but new updates will require a subscription.
- Technical Support: Lifetime technical support is available 24/7/365.
- Return Policy: A 60-day refund and replacement policy is provided.
For any issues or inquiries, please contact technical support at cardiag-aftersales@hotmail.com.





