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Luke Edwards
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X431 Idiag Comparison: How It Stacks Up Against Other Launch Devices

What You Need to Know About X431 Idiag Serial Number

X431 Idiag is a diagnostic tool that can connect to your smartphone or tablet via Bluetooth and perform various functions on your vehicle. It is developed by Launch, a leading company in the automotive industry. X431 Idiag can support more than 70 car brands and thousands of car models, and it can access various systems such as engine, transmission, ABS, SRS, body control module, vehicle theft deterrent, instrument panel cluster and radio.

X431 Idiag Serial Number


However, before you can use X431 Idiag, you need to activate it with a serial number and a password. The serial number and the password are available in the password envelope that comes with the device. You also need to register the device on Launch's official website and download the software of the vehicle brands you want to diagnose.

How to Activate X431 Idiag with Serial Number

To activate X431 Idiag with serial number, you need to follow these steps:

  • Open the App Store on your smartphone or tablet and search for X431 Idiag. Download and install the app.

  • Open the app and read the disclaimers. Click "I've read it" to proceed.

  • Choose Management at the bottom left-hand corner and select Login.

  • To log in, you need a CC number, which is a user name for Launch's user center. If you don't have one, click Register and set your user name, password and email address. Then click Register again to complete the registration.

  • Go back to Login and enter your CC number and password. Click Log In.

  • Click DBScar Register and enter your X431 Idiag serial number and password. These are found in the password envelope.

  • Click Register again to finish the activation. You will see your user name and iDiag serial number on the screen.

How to Download Software for X431 Idiag

To download software for X431 Idiag, you need to follow these steps:

  • Select the vehicle brand you want to test on the app's main screen. For example, BMW.

  • You will see a screen suggesting you buy the software. Click Buy Now.

  • You will see the software information and buying options. Choose the option that suits you best.

  • You will see the order status and details. Choose Pay it on our website to pay on Launch's official website.

  • Log in Launch's user center with your CC number and password. Pay for the software with your preferred method.

  • After paying successfully, go back to the app and enter Launch's download center.

  • Download and install the software you have paid for.

How to Use X431 Idiag

To use X431 Idiag, you need to follow these steps:

  • Find out your vehicle's DLC socket, which is usually located on the driver's side, about 12 inches away from the center of dashboard. If you can't find it, refer to your vehicle's repair manual.

  • Plug the DBScar connector into the DLC socket.

  • Enter Bluetooth setting interface on your smartphone or tablet and turn on Bluetooth. Select DBScar adapter's name to pair. The name is your X431 iDiag serial number. You don't need a password to match Bluetooth.

  • Start to diagnose your vehicle and choose the system you want to test. For example, engine.

  • X431 iDiag supports various functions such as reading trouble codes, clearing trouble codes, reading data stream and special functions. Choose the function you want to perform and follow the instructions on the screen.


X431 Idiag is a powerful and convenient diagnostic tool that can help you diagnose your vehicle with your smartphone or tablet. However, you need to activate it with a serial number and a password before using it. You also need to register it on Launch's official website and download the software of the vehicle brands you want to test. Once you have done these steps, you can use X431 Idiag to access various systems and functions of your vehicle.

If you have any questions or problems about X431 Idiag serial number or other aspects of this device, please contact Launch's customer service or visit their website for more information.