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Home > Auto Scanner Tools > Original brand > Launch X431 > Launch X431 Diagun IV car Diagnotist Tool with Full Connectors 2 years Free Update Online

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Launch X431 Diagun IV car Diagnotist Tool with Full Connectors 2 years Free Update Online

  • Item No.  CA399
  • History: 36  sold
  • Market Price: US$765.60
    Shop Price: US$638.00
    Promotion Price: US$638.00
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  • Stock  118
  • Weight:  5.5KG
  • Rate:  comment rank 40 () Write a Review
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Technical Support



Launch X431 Diagun IV car Diagnotist Tool with Full Connectors 2 years Free Update Online

Top Reasons to choose Launch X431 Diagun IV

1.Latest version

2.2 years free update online.

3.Multi-language, you can change the language by yourself,dont need to send to seller to activate it.

English,French,Spanish,German,Italian,Portuguese,Turkey,Polish,Dutch,Greek,Hungarian,Danish,Persian,Romanian,Serbian,Finnish,Swedish,Czech,Arabic,Russian,Japanese,Korean,Traditional Chinese and Simplified Chinese.

4.With Android 7.0 system, supports one-click update.

5.Handset, Easy to operate, avoid broken or lost bluetooth adpater.

6.Add Special Function: Brake Reset,Oil Reset,SAS Reset,BAT Reset,Bleeding,Elec.TH Tottle Rottle Rlrn,TPMS Reset,DPF REG.


X-431 IV is am slim evolutionary vehicle diagnostic tool , Featuring a quad-core 1.1 GHz processor ,and a 5.5 inch captitive screen , X-431 Diagun IV delivers diagnostic functionality which helps to diagnose vehicles issues more efficiently


In addition ,X-431 V Diagnostic support Wifi connection , one-click update, diagnostic feedback and all kinds of service function (include Oil lamp reset)

Full Diagnose Function:

X431 diagun iv can diagnose the electronic control system of prevailing vehicle models covering Asian, European, American and China. Full range car models and full car system diagnose make it a professional automotive diagnostic tool.

Diagnosis functions include: Read DTCs, Clear DTCs, Read datastream, Special functions etc;

Launch X431 Diagun IV Special functions:
The Reset section is specially designed to provide you quick access to the vehicle systems for various scheduled service and maintenance performances.
All resetting operations are driven by executive commands. Just by following the on-screen prompts to select appropriate execution options, input correct values or data, and perform necessary actions, the system will guide you through the complete performance.
1.The most commonly performed service functions contain:
Oil Reset Service
Steering Angle Calibration
Electronic Parking Brake Reset
Battery Register / Battery Maintenance
ABS Bleeding
Electronic Throttle Position Reset / Learn
Diesel Particulate Filter (DPF) Regeneration
Tire Pressure Monitor System Reset
2. Connecting by Bluetooth:
X431 diagun iv communication via Bluetooth, very easy to use.  X431 Diagun IV computer is specially designed for Android platform with clear and user-friendly interface (5.5 inch IPS screen with a resolution of 1280 x 720 pixels).X431 Diagun IV computer is equipped with an exclusive protection sleeve to prevent it from being damaged;
3. Browser:
Built-in Wi-Fi module makes surfing on the internet freely;
To configure your personalized X-431 diagun iv through it
5. Search:
Enables you to locate your target quickly and conveniently;
6. Email:
Allows you to send and receive email. External POP3 or IMAP email account for some common Web email service provider can be added;
7. File Manager:
You can manage the files or downloaded files stored in SD card efficiently;
8. Other Additional Functions:
Alarm, calendar and calculator etc.
9. Applications:
Other android based applications can be customized to install or uninstall.
10. Software Update:
Once a newer diagnostic software version is detected, a prompt message will pop up on the screen. To keep synchronized with the latest version, tap “Update now” to enter the update center. 

Technical Parameters:

X-431 Diagun IV:

Operating system:Android 7.0

Processor:Quad core 1.1 GHz


Storage:16GB (Expandable up to 64GB)

LCD screen:5.5 inch IPS screen with a resolution of 1280 x 720 pixels

Camera:Front-facing 2MP camera + rear-facing 8MP camera

Battery:2500mh rechargeable polymer lithium battery


*Wi-Fi: WLAN 802.11b/g/n

*Bluetooth: Bluetooth 4.1

Working temperature:0℃ ~ 45℃

Storage temperature:-10℃ ~ 50℃


V-CI connector:

Working voltage:9~18V

Working temperature:-10℃~55℃

Storage temperature:-20℃~70℃

Relative humidity:20%~90%

Note: Software with red font is required to be purchased separately.

Launch X431 Diagun IV Packing List:
1pc x Diagun lV overseas host RoHs
1pc x DBScar lV diagnostic connector RoHs
1pc x X431 AIT OBD16  extension ine RoHs
1pc x Diagun IV quickstart(English)RoHs
1pc x X431 PIN anvelope
1set x Launch X431 Connector Set Package


1. How to save power?

    Please turn off the screen while X-431 Diagun IV keeps idle.

    Set a shorter standby time.

    Decrease the brightness of the screen.

    If WLAN connection is not required, please turn it off.

    Disable GPS function if GPS service is not in use.


2. What should I do in case I forgot the screen lock?

You can set screen lock as pattern or password. If you forgot the password, please consult your device provider or reset your device.

   Warning: Resetting may cause data loss. Before use, please make sure important data has been backed up.


3. How to do if the system runs slow?  

In this case, please do the followings:

> Check all running applications and stop the unnecessary applications (Steps: Settings -> Apps -> Running -> Tap the desired application and then tap “Stop”).

> Check all installed applications, remove the unnecessary applications (Steps: Settings -> Apps -> Downloaded -> Tap the desired application and then tap “Uninstall”).

If all steps mentioned above are finished and the system still works slowly. Please try to close the system and reboot your X-431 Diagun IV.


4. How to reset X-431 Diagun IV?

   Resetting may cause data loss. Before doing so, please make sure important data and information has been backed up.

Do the following to reset X-431 Diagun IV:

1. Tap “Settings” --> “Back & Reset”;

2. Tap “Factory data reset”;

3. Tap “Reset tablet”;

4. Tap “Clear all data” to start resetting until the tool automatically reboots.

User Comment(Total 12 Customer Reviews)

  • by VALERIY IVCHENKO,Dec 09,2017

    A great tool to can improve in any cars a reliability diagnostic procedure, honestly i am very grateful about the Launch X431 Diagun IV, really an incredible equipment, the time of delivery was so fast and the product comes in perfect conditions

    Reply #1 by CNAUTOTOOL Dec 09,2017
    Thanks for your support for our product


  • by Jan Sundal,Nov 16,2017

    Can this program key fobs

    Reply #1 by CNAUTOTOOL Nov 16,2017
    Yes it will on most cars, thank you


  • by rickard sundelin,Oct 27,2017

    Can. This activate the fuel pump. For testing

    Reply #1 by CNAUTOTOOL Oct 27,2017
    Yes, it is ,thank you


  • by PLEVENAGE,Oct 03,2017

    can this re calibrate the electronic throttle position sensor on Japanese vehicles

    Reply #1 by CNAUTOTOOL Oct 03,2017
    Yes it can scan it is a good device but except Tata brand cars and some Mahindra cars it will not connect , thank you


  • by Justin sinisi,Sep 17,2017

    A great tool to can improve in any cars a reliability diagnostic procedure, honestly i am very grateful about the Launch X431 Diagun, really an incredible equipment, the time of delivery was so fast and the product comes in perfect conditions.

    Reply #1 by CNAUTOTOOL Sep 17,2017
    Thank you so much for kindness feedback


  • by Alan Sprague,Sep 13,2017

    Can this scanner support bi-directional functions

    Reply #1 by CNAUTOTOOL Sep 13,2017
    Yes it can control EVAP,fuel pump and other outputs.Even in Body and Chassis.Works on most cars I have used it on. thank you


  • by Alfred Araujo ,Aug 23,2017

    do this device support Spanish?

    Reply #1 by CNAUTOTOOL Aug 23,2017
    Yes , it support Spanish , thank you


  • by Michelle lara,Aug 19,2017

    just verified my product from original launch website , good tool

    Reply #1 by CNAUTOTOOL Aug 19,2017
    Thanks for your positive feedback


  • by Midwest Melinda ,Aug 08,2017

    I register product as per instructions and it download all software, very easy to do

    Reply #1 by Cara Aug 08,2017
    Thanks for your good feedback , this tool with the user maunal in the package , thank you


  • by Gilberto R.,Jul 22,2017

    work great , thanks

    Reply #1 by Cara Jul 22,2017
    Thanks for your positive feedback


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