Register and Connection User Guide For Launch X431 Diagun IV

This post shares you with a guide about how to use Launch X431 Diagun IV . As the 4 generation of X431 Diagun, this one Diagun IV could use directly without IP limit. It is a useful tool which supports over 20 easy-changeable language as well as new 11 special functions added.

2017 Launch Diagun IV Powerful Diagnostic Tool New X-431 Diagun IV Code Scanner with 2 years Free Update

2017 New X431 diagun iv, can replace X431 Diagun III or X431 IV, is a new diagnostic tool release by Launch tech. It is composed of anX431 Diagun IV computer, a protection sleeve, a DBScar diagnostic connector and many OBD1 to OBD2 connectors. It communicates with your car by DBSCAR connecting with Bluetooth, it reads car DTCs and does diagnose function by the X431 Pro Pad computer, it achieves X431 series full car model and full system diagnostic function. Meanwhile, taking advantage of mobile internet, it integrates more application and service, such as creating maintenance database and case library, providing instant maintenance information, establishing public and private maintenance social circle etc. As a result, it builds a broad vehicle diagnostic community, which helps you share vehicle maintenance knowledge online, exchange vehicle maintenance experience online and provide vehicle maintenance related service support online. This will be another revolution raised by Launch in the vehicle diagnosis industry.

This post will show like this:

  • How to register and activate Launch X431 Diagun IV?
  • How to Connect/Disconnect Diagun IV WiFi?
  • How to set up X431 Diagun IV Bluetooth?

How to register and activate Launch X431 Diagun IV?

User registration

Tap “Login” in the upper right corner of the main menu screen:

If you are a new user, tap “New Registration”.

Note: To obtain better service, you need to provide real information.

  1. Create App account: In Image 3, fill in the information in each field and then tap “Register”, a screen similar to the following will appear:

  1. Activate the VCI connector: In Image 4, input the Serial Number and Activation Code, which can be found in the password envelope.

Note: To exit and activate it later, tap “Skip”. In this case, you can activate your connector by tapping “Activate Connector” in “Personal Center”.

Activate Connector.

  1. Download diagnostic software: Tap “Activate”, a dialog box similar to Image 5 will appear:

To download the diagnostic software, tap “Yes” to enter the software download page. Tap “No” to download it later. On the download page, tap “Update” to start downloading. It may take several minutes to finish it, please be patient to wait. To pause downloading, tap “Pause”. To resume it, tap “Continue”. Once the download is complete, the system will install the software package automatically.

If you have registered to be a member, input your name and password, and then tap the “Login” button to enter the main menu screen directly.

Note: X-431 Diagun IV has an auto-save function. Once the username and password are correctly entered, the system will automatically store it. Next time you login the system, you will not be asked to input the account manually.

If you forgot the password, tap “Retrieve Password”, and then follow the on-screen instructions to retrieve it.

How to Connect/Disconnect X431 Diagun IV WiFi?

Note: If you don’t need to use Wi-Fi for a while, you can turn it off to conserve battery life.

X-431 Diagun IV has built-in Wi-Fi that can be used to get online. Once you’re online, you can register your X-431 Diagun IV, surf the Internet, get apps, send email, launch the remote diagnosis, and check for software updates etc.

  • Connect to a Wi-Fi network
  1. On the home screen, tap Settings -> WLAN.
  2. Slide the Wi-Fi switch to ON, X-431 Diagun IV will start searching for available wireless networks.
  3. Select a wireless network, y If the chosen network is open, X-431 Diagun IV will connect automatically; y If the selected network is encrypted, a network password will need to be entered. 4. When “Connected” appears, it indicates the Wi-Fi connection is complete.

Note: When Wi-Fi is not required, this should be disabled to conserve battery power. Once it is connected successfully, tap the Wi-Fi network from the list to view its name, link speed, security type, IP address etc. When this tool is in range, it will connect to the previously linked network automatically.

  • Disconnect from a Wi-Fi network
  1. On the home screen, tap Settings -> WLAN.
  2. Tap the network with a Connected status, then tap “Disconnect”.


How to set up X431 Diagun IV Bluetooth?

Enter X-431 Diagun IV Bluetooth setting screen (“Settings” -> “Bluetooth”), slide the Bluetooth switch to ON and X-431 Diagun IV will start searching available Bluetooth device, tap the desired connector to pair. By default, the Bluetooth name is 98729*****00 (where ***** stands for 5 digits.).

Note: In case no Bluetooth setting is done before diagnostic software is launched, you can also configure it while using the software.

Functions For Launch EZcheck EZ Check OBDII Scan Tool

Launch EZcheck is a new diagnostic code reader trusted by mechanics and developed by Professional Engineers in 2017. Having complete access to engine control units, it ia as easy to use as handheld code reader plus the benefits of your smartphones. Once plugged into your vehicle’s 16pin OBDII DLC, the unit will power up and prompt you to start your ignition. If your vehicle has a Check Engine Light comes on, you can use EZcheck to read the error codes, find out what the problem is, and perhaps fix it. Save your time and money before going to a workshop.

Launch X431 EZcheck is a new design OBDII Scanner. X431 EZcheck work with phone same as  Launch Easydiag and Launch M-diag. You directly download “EZdiag” app from Android or Iphone will be ok. EZcheck can read fault code and clear code same as X431 Easydiag and X431 M-diag.

Launch x431 EZcheck EZ Check OBDII Scan Tool Functions:
1. Easily determines the cause of the “Check Engine Light (MIL)”.
2. Reads hard (memory)/pending (intermittent) and historic codes and show definitions.
3. Turns off Check Engine Light (MIL), clears codes and resets monitors.
4. I/M monitor readiness test.
5. Retrieves vehicle information (VIN).
6..Read data stream

Guide Installation Launch EZCheck EZDiag Software

Here is the guide to install, register and activate Launch EZcheck scanner EZDiag software App to work with iPhone.

Launch x431 EZcheck is a new design OBDII Scanner. X431 EZcheck work with phone same as Launch Easydiag and Launch M-diag. You directly download “EZdiag” app from Android or Iphone will be ok. EZcheck can read fault code and clear code same as X431 Easydiag and X431 M-diag.

First you can scan the QR code on user manual to download the App on iOS or Android APP Store for Free. You can also search EZDiag app on your mobile search engine and install it.
Open EZDiag software application
Sign up EZDiag with user name and password.
Enter your email address (for login or retrieving password)
Choose your region
Set password (At least 6 digit containing numbers, letters and signs)
Activate the EZDiag
Enter serial number and verification code (you can find S/N on the package)
Activation success.
Now you can use the Launch X431 EZCheck EZDiag OBDII scan tool.