1. Introduction
The Vgate iCar3 ELM327 is a high-quality automotive scanning tool designed to diagnose vehicle issues and monitor performance data. This compact device is available in two versions: Bluetooth 3.0 for Android devices and a WiFi version compatible with both Android and iOS operating systems. It supports all standard OBD-II protocols, offering a reliable and efficient way to interact with your vehicle's onboard diagnostic system.


2. Specifications
| Feature | Description |
|---|---|
| Brand Name | Vgate |
| Product Name | Vgate iCar3 BT-3.0/WIFI Diagnostic Tool |
| Item Type | Code Readers & Scan Tools |
| Hardware Version | V2.1 |
| Software Version | Newest |
| Software Update | No |
| Language | English |
| Operating System (BT-3.0) | for Android |
| Operating System (WIFI) | for Android/IOS |
| Special Function | Read real time data, Read/Clear DTC |
| Certification | CE |
| Origin | Mainland China |
| Package Dimensions | 21 cm (Length) x 13 cm (Width) x 4 cm (Height) |
| Package Weight | 0.077 kg |
Supported OBD-II Protocols:
- SAE J1850 PWM (41.6 Kbaud)
- SAE J1850 VPW (10.4 Kbaud)
- ISO9141-2 (5 baud init, 10.4 Kbaud)
- ISO14230-4 KWP (5 baud init, 10.4 Kbaud)
- ISO14230-4 KWP (fast init, 10.4 Kbaud)
- ISO15765-4 CAN (11bit ID, 500 Kbaud)
- ISO15765-4 CAN (29bit ID, 500 Kbaud)
- ISO15765-4 CAN (11bit ID, 250 Kbaud)
- ISO15765-4 CAN (29bit ID, 250 Kbaud)
- SAE J1939 CAN (29bit ID, 250 * Kbaud)
- USER1 CAN (11 * bit ID, 125 * Kbaud)
- USER2 CAN (11 * bit ID, 50 * kbaud)
Note: Default settings are user adjustable.
3. Setup Instructions
WARNING: Please strictly follow the instructions and safety tips, and use the product with caution.
3.1. Device Connection
- Turn on the ignition in your vehicle.
- Locate your vehicle's OBD-II port (typically under the dashboard on the driver's side) and plug the Vgate iCar3 adapter firmly into the port.
- The adapter will power on, indicated by an LED light.

3.2. Software Installation & Configuration
The Vgate iCar3 requires a compatible diagnostic application on your smartphone or tablet. You can download recommended software by scanning the QR code provided in the Quick Start Guide or searching your device's app store.

For Android Devices (Bluetooth 3.0 & WiFi versions):
- Enable Bluetooth or WiFi on your Android device.
- For Bluetooth 3.0: Do NOT pair the device directly from your phone's Bluetooth settings. Instead, open your chosen OBD diagnostic app (e.g., Torque, OBD Auto Doctor).
- Within the app, navigate to its settings or connectivity options.
- Select 'Bluetooth' or 'BT-wireless' as the connection type and choose 'Vgate' or 'Vgate iCar3' from the list of available devices.
- For WiFi: Connect to the 'Vgate' WiFi network from your phone's WiFi settings. Then, open your chosen OBD diagnostic app and select 'WiFi' as the connection type.

For iOS Devices (WiFi version only):
- Enable WiFi on your iOS device.
- Connect to the 'Vgate' WiFi network from your iPhone/iPad's WiFi settings.
- Open your chosen OBD diagnostic app (e.g., OBD Auto Doctor).
- Within the app, navigate to its settings or connectivity options.
- Select 'WiFi' as the connection type and ensure 'Vgate' is selected as the device.
Important Note for iOS Bluetooth 4.0 (if applicable to your specific iCar Pro model): If you are using an iOS phone with an iCar Pro Bluetooth 4.0 model, simply open your phone's Bluetooth settings but do NOT connect directly. Instead, open the diagnostic app, find the device, and connect to Bluetooth within the app itself.

4. Operating Instructions
Once the Vgate iCar3 is connected to your vehicle and paired with your diagnostic application, you can begin to utilize its features:
4.1. Key Functions
- Read Diagnostic Trouble Codes (DTCs): Access and display both generic and manufacturer-specific trouble codes, along with their definitions (over 3000 generic code definitions in the database).
- Clear Trouble Codes: Erase DTCs and turn off the Malfunction Indicator Lamp (MIL), also known as the "Check Engine" light.
- Real-time Data Display: Monitor various vehicle performance parameters in real-time, including:
- Engine RPM
- Calculated Load Value
- Coolant Temperature
- Fuel System Status
- Vehicle Speed
- Short Term Fuel Trim
- Long Term Fuel Trim
- Intake Manifold Pressure
- Timing Advance
- Intake Air Temperature
- Air Flow Rate
- Absolute Throttle Position
- Oxygen sensor voltages/associated short term fuel trims
- Fuel Pressure
- And many more...
- Fuel Consumption Measurement: Track and measure your vehicle's fuel consumption.
- Data Logging & Export: Record various parameters, display graphics in real-time, and download data to external media in various formats for later analysis or printing.


5. Maintenance
The Vgate iCar3 ELM327 is designed for durability and requires minimal maintenance. There are no user-serviceable parts inside the device. To ensure optimal performance and longevity:
- Keep the device clean and free from dust and moisture.
- Store the device in a cool, dry place when not in use.
- Avoid dropping or subjecting the device to strong impacts.
- Always remove the adapter from the OBD port when the vehicle is not in use for extended periods to prevent battery drain, although the device features an auto-sleep function.
6. Troubleshooting
6.1. Connection Problems
- Device not powering on: Ensure the adapter is fully seated in the OBD port. Test the OBD port with another device if possible to confirm it is supplying power.
- Cannot connect via Bluetooth/WiFi:
- Verify that Bluetooth or WiFi is enabled on your smartphone/tablet.
- Ensure you are connecting through the diagnostic app, not directly through your phone's system settings (especially for iOS Bluetooth 4.0 models).
- Try plugging the adapter into several different OBD interfaces in your vehicle to check for a stable power supply.
- Restart both the diagnostic app and your smartphone/tablet.
- App not detecting adapter: Confirm that you have selected the correct connection type (Bluetooth or WiFi) and device name (Vgate) within your diagnostic application's settings.
6.2. Data Reading Issues
- No data or incorrect readings: Ensure your vehicle's ignition is on (or engine running for live data). Verify that your vehicle is OBD-II compliant.
- Intermittent connection: Check for any physical obstructions or interference. Ensure the adapter is securely plugged in.
7. User Tips
- App Compatibility: The Vgate iCar3 is compatible with a wide range of third-party OBD-II diagnostic applications. Popular choices include Torque (for Android), OBD Auto Doctor (for Android/iOS), and others like Carista and Bimmercode for specific vehicle diagnostics and coding functions. Always check the app's compatibility requirements.
- iOS Bluetooth Connection: For iOS users with Bluetooth 4.0 models, remember to initiate the connection from within the diagnostic app itself, rather than pairing directly via the iOS Bluetooth settings.
- Auto-Sleep Feature: The device is designed to enter an auto-sleep mode after approximately half an hour of communication inactivity. This helps conserve your vehicle's battery.
8. Warranty & Support
All Vgate products, including the iCar3 ELM327, come with a Two-Year Warranty from the date of purchase, covering manufacturing defects.
8.1. Customer Support
For technical assistance, troubleshooting, or warranty claims, please contact Vgate customer support. Messages are typically answered within 24 hours.
- Email: cnvgate@outlook.com

8.2. Additional Resources
A detailed user manual in PDF format is available for download. This document provides further in-depth information regarding the device's operation and features.
User Manual (PDF): Download PDF User Manual