Introduction
The AUTOOL X50 Plus is a multi-function car OBD smart digital meter designed to provide real-time vehicle data, diagnostic capabilities, and safety alarms. This device offers a variety of operating interface modes and a clear LED display, enhancing your driving experience with essential information at a glance.

Image: The AUTOOL X50 Plus device showing its main display with current speed, coolant temperature, and battery voltage.
Key Features
- Multi-function Display: Freely switch between various operating interface modes, displaying coolant temperature, fuel consumption, engine speed, and driving speed.
- Multiple Detection: Tracks coolant temperature, fuel consumption, and engine speed.
- Read & Clear Car Fault Codes: Includes code definitions, allowing scanning and clearing of error codes and data streams for easier diagnosis and repair. Supports full OBD protocols.
- Smart Light Sensor & 2.4" HD Screen: Automatic brightness adjustment for optimal visibility in varying light conditions. Large 2.4-inch HD screen provides a clear visual experience.
- Safety Alarm Functions: Features early alarms for water temperature, over-speed, shifting reminders, and vehicle faults.

Image: A visual representation of the multi-functional capabilities, including driving speed, engine RPM, battery voltage, coolant temperature, MAF, intake pressure, driving distance, KM/MPH conversion, fuel consumption, shift speed alarm, scan DTCs, clean DTCs, speed alarm, RPM alarm, voltage alarm, coolant temp alarm, fatigue driving alarm, and data stream.
Package Contents
Upon opening the package, please verify that all components are present and in good condition:
- AUTOOL X50 Plus Main Unit
- OBD Adapter Cable
- USB Cable
- User Manual (this document)
- Retail Packaging Box

Image: The AUTOOL X50 Plus device, OBD adapter cable, user manual, and product packaging.
Setup
Follow these steps to set up your AUTOOL X50 Plus device:
- Step 1: Locate your vehicle's OBD-II port. This is typically found under the dashboard on the driver's side. Plug the provided OBD adapter into the car's OBD-II port.
- Step 2: If desired, carefully hide the OBD line in the seam inside the car to ensure a neat installation and prevent interference with driving.
- Step 3: Connect the USB cable from the OBD adapter to the USB port on the AUTOOL X50 Plus main unit.

Image: Step-by-step visual guide for connecting the OBD adapter to the car, routing the cable, and plugging it into the X50 Plus unit.
Installation Video Guide
Video: An official video demonstrating the installation process and various functions of the Autool X50 Plus Multi-Function Car OBD Smart Digital Meter.
Operating Instructions
Once connected, the AUTOOL X50 Plus will power on automatically with your vehicle. Use the function button (typically a scroll wheel or button on the side/bottom) to navigate through menus and select options.
Interface Display Modes
The device offers multiple display interfaces to show different vehicle parameters:
- Speed Display: Shows current driving speed (Km/h or Mph).
- Water Temperature: Displays engine coolant temperature in Celsius.
- Voltage: Shows real-time battery voltage.
- Travel Distance: Tracks the distance traveled.
- Average Speed: Calculates and displays average driving speed.
- Fuel Consumption: Shows current fuel consumption.
- Average Fuel Consumption: Displays average fuel consumption over time.

Image: Examples of different data displays available on the X50 Plus, including speed, water temperature, voltage, travel distance, average speed, fuel consumption, and average fuel consumption.
Automatic Light Sensor
The device is equipped with a smart light sensor that automatically adjusts the screen brightness based on ambient light conditions, ensuring optimal readability during both day and night driving.

Image: The X50 Plus display adapting its brightness for clear visibility in both bright daytime and dark nighttime conditions.
OBD Diagnosis and System Settings
The AUTOOL X50 Plus allows you to access OBD diagnosis functions and customize system settings:
- Scan DTCs: Scan for diagnostic trouble codes (DTCs) to identify vehicle issues.
- Clean DTCs: Clear stored fault codes after addressing the underlying problem.
- Driving Test: Perform acceleration and brake tests.
- System Settings: Adjust units (Imperial/Metric), displacement, fuel type, speed alert thresholds, coolant alert thresholds, and other parameters.
Navigate these menus using the function button. Push the button to select, and hold to go back or confirm, depending on the menu context.
Maintenance
To ensure the longevity and optimal performance of your AUTOOL X50 Plus, follow these simple maintenance guidelines:
- Keep the device clean by wiping it with a soft, dry cloth. Avoid using abrasive cleaners or solvents.
- Ensure the OBD-II connector and USB port are free from dust and debris.
- Avoid exposing the device to extreme temperatures or direct sunlight for prolonged periods, especially when the vehicle is parked.
- Handle the device and cables with care to prevent physical damage.
Troubleshooting
If you encounter issues with your AUTOOL X50 Plus, please refer to the following common troubleshooting tips:
- Device Not Powering On:
- Ensure the OBD adapter is securely plugged into the vehicle's OBD-II port.
- Verify that the USB cable is firmly connected between the adapter and the X50 Plus unit.
- Check your vehicle's ignition status; the device typically powers on with the vehicle.
- No Data Displayed or Incorrect Readings:
- Confirm your vehicle is OBD-II compliant. Most vehicles manufactured after 1996 in the US, and later in other regions, are.
- Refer to the compatibility list below. Some specific vehicle models or years may not be fully supported.
- Ensure the engine is running for real-time data to be available.
- Alarms Triggering Unexpectedly:
- Check the alarm threshold settings in the system settings menu. Adjust them to appropriate values for your vehicle and driving habits.
- If a fault code alarm triggers, perform an OBD diagnosis to identify the specific issue.
Vehicle Compatibility
The AUTOOL X50 Plus supports most OBD-II compliant vehicles. However, some specific models and years may not be fully compatible. Please review the following list of known unsupported vehicles:

Image: A detailed list of specific car models and years that are not supported by the AUTOOL X50 Plus device. This includes certain BMW, Chevrolet, Chrysler, Dacia, Daihatsu, Dodge, Ford, Honda, Hyundai, Isuzu, Iveco, Jaguar, KIA, Lincoln, Mercedes, Mini, Mitsubishi, Nissan, Opel, Perodua, Peugeot, Pontiac, Rainier, Renault, Rover, Seat, Skoda, Toyota, and Volkswagen models.
If your vehicle is on this list or you are unsure about compatibility, please contact AUTOOL customer service before purchase or for further assistance.
Specifications
| Parameter | Value |
|---|---|
| Working Voltage | DC 10-18V |
| Working Current | <80mA |
| Dormant Current | <15mA |
| Working Temperature | -20 to 85 ℃ |
| Product Dimensions (L x W x H) | 80 x 60 x 55 mm (3.15 x 2.36 x 2.17 inches) |
| Screen Size | 2.4 Inches |
| Material | Plastic |

Image: A visual breakdown of the AUTOOL X50 Plus, highlighting its dimensions, USB port, function button, and OBD adapter.

Image: The OBD-II connector pinout diagram, detailing the function of each pin.
Warranty & Support
AUTOOL provides a comprehensive service guarantee for the X50 Plus Multi-Function Smart Digital Meter.
- Warranty Period: If you encounter any problems with the device, you can contact customer service for a free replacement within three years of purchase.
- Technical Support: Technical support is available to timely and effectively resolve quality problems within 24 hours.
For support, please refer to the contact information provided with your product packaging or visit the official AUTOOL website.





