The Diagnostic Tool of the Decade – LAUNCH X431 ProS V4.0

With the expanding complexity of today’s automotive electrical systems, including an ever-increasing range of OEM specifications, the modern automotive technician must be one step ahead of a constantly changing industry.

Unlike other tools and diagnostic equipment, the X431 series scanner is an investment that increases in value as time goes by. It represents the cutting edge of automotive diagnostic technology, providing dealer quality electronic diagnostics for the independent workshop in one simple and affordable unit.

The Launch X431 ProS V4.0 is the latest diagnostic tool from LAUNCH and today we will show you why this is an essential tool for the independent automotive expert.

LAUNCH X431 ProS V4.0 Features Overview
LAUNCH PROS V4.0, the Latest X431 Diagnostic Tool from LAUNCH
LAUNCH PROS V4.0, the Latest X431 Diagnostic Tool from LAUNCH
4.6 / 5

2021 Newest Elite Version, work on over 200,000 car models. YouTube mechanics with 40 years of experience highly recommended.
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  • ECU Module coding, and bi-directional capabilities
  • An array of advanced functions for worldwide vehicles
  • 31+ reset & relearn maintenance services
  • All system diagnostics
  • High configuration software that enables high operating speeds
  • Can expand pro-level features with functional modules
  • A multi-touch, tablet-style capacitor screen for quick, smooth use
  • Portable size makes it easy to use and transport
  • User-friendly interface
  • Photo, video and multimedia functions, as well as other software applications
  • Quick and easy updating procedure, over WiFi
  • Live graph data when in use
  • Full global DTC testing of vehicle modules
  • Diesel particulate filters regen/replacement
  • Auto VIN recognition, auto-search
  • Live data recording and multiple graphing
  • Package includes 2 years of software updates and a 5-year warrant
The Comparison between V+ 4.0, ProS V4.0, and ProS MINI 3.0
There are important differences between these three similar X431 diagnostic tools. Referring to the following comparison chart, we will get some reliable data:
Model X431 V+ V4.0 X-431 Pros V4.0 X-431 PROS MINI V3.0
Customer Rating 4.7 / 5 4.4 / 5 4.3 / 5
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CPU 1.8GHz 8-Core 2.0GHz 4-Core 1.3GHz 4-Core
O.S. Android 9.0 Android 9.0 Android 7.0
On-Board Memory 32 GB 32 GB+128GB 32 GB
Battery 7000mAh 5000mAh 4680mAh
Display 10.1″ 8″ 7″
Dpi 1920*1200 1280*800 1024*600
Camera 5M Front, 8M Rear 2M Front, 5M Rear 5M Rear
Wi-Fi 2.4GHz/5GHz 2.4GHz/5GHz 2.4GHz
USB Micro USB Micro USB Type C
Demision 265*214.5*50.5mm 223*171*50mm 205*130*50.8mm
All System Diagnostics
Active Test
AutoVIN, AutoScan
ECU Coding
Service Functions 31+ 31+ 25+
VAG Guided Function
FCA Access
Expandable Module Design Vedio Scope, Key Programmer, Wi-Fi Printer, TsGUN, Battery Tester BST360, Heavy Duty Box HDIII Vedio Scope, Key Programmer, Wi-Fi Printer, TsGUN, Battery Tester BST360 Vedio Scope, Key Programmer, Wi-Fi Printer
Advanced Functions Personalization, Programmable Module Installation, Power Balance, Component Matching, Online Calibration, Variant Coding, Online Parameterization, Online Account Login Service … Personalization, Programmable Module Installation, Power Balance, Component Matching, Online Calibration …

We can see from this chart, the LAUNCH X431 ProS V4.0 though is designed to be the lower-level scanner of V+4.0, overall is still a phenomenal diagnostic tool kit that has everything one could need for modern automotive maintenance and alteration. Programming, scanning, and testing are all covered by its accompanying devices and software.

OE-Level Diagnostics: Advanced All System Diagnostics with Active Test

This professional diagnostic scan tool can access all available vehicle modules including PCM, ECM, EPS, PDM, TPM, BCM, ABS, and SCCM, etc and perform OE-Level wireless diagnosis on all car systems ABS, SRS, Engine, Transmission, Brake Systems, etc with complete capabilities for codes, live data graphing and merging, active test, ECU information, adaptation, matching, advanced ECU coding, etc.

Bi-Directional Control capability means it can perform Active Tests to access vehicle-specific subsystems and component tests. The tester outputs the command to the ECU to drive the actuators to determine the integrity of the system or parts by reading the ECU data, or by monitoring the operation of the actuators.

For example, X431 ProS V4.0 can actuate relays, injectors, coils, or perform system tests, etc. Also, it will actuate solenoids valve and actuators for active testing to identify the error easily moreover.

You need to note that, its Active tests vary by manufacturer, year, and model, and only the available tests can be displayed in its function menu.

Code Your Car and Unlock Hidden Features

This is a pro-level diagnostic tool aimed at professionals.
It shares the same ECU Coding feature as powerful as LAUNCH X431 V+ 4.0, to change pre-programmed options, unlock hidden functions, and reveal high-end car functions.

What can ECU Coding bring to your car?

Deactivating the Start/Stop function // Beeping when unlocking and locking // Locking the doors once a certain speed is reached (e.g. from 15 km/h) // Seatbelt warning sounds // Mirrors automatically folding and unfolding // Closing the windows after locking the car door with the key // Flashing the brake lights during emergency braking // Activating/deactivating daytime running lights // Changing the brightness of daytime running lights // Flashing of the headlights when locking or unlocking the doors via the remote control // Flashing of the headlights when the alarm system is triggered // Displaying of the real speed via GPS signal // Displaying the amount of fuel consumption at a given speed // Changing the brightness of the dashboard // Displaying the optimal gear changing time in eco or sport mode // Select whether the display should be on the dashboard or head-up display // Incoming call display // And many more.

An array of advanced functions for worldwide vehicles

It covers loads of advanced features as Guided Functions / Online Coding for VW / Audi / Skoda / Seat, Setting & Changeover (adblue reset, unlock the engine after a collision, cancel ABS driving test, and more) for Benz, Modification for BMW, and Offline Coding, Customization / Personalization, for worldwide vehicle brands, and keep growing.

You can refer to the following chart for more information.

AutoAuth For FCA US SGW Access
Unlock Hidden Functions For BMW / Mini / Benz / VW / Audi / Skoda / Sear / Porsche / Land Rover / Jaguar
Guided Functions For VW / Audi / Skoda / Seat
Online Coding For VW / Audi / Benz / BMW / Seat / Porsche …
Personalization For BMW / Porsche / Toyota / Subaru
Programmable Module Installation For Ford / Mazda
Power Balance For Chrysler / GM / Ford
Component Matching For VW / Audi / Skoda / Seat / BMW / Chrysler / GM / Ford / Opel / Mazda / Fiat / Honda / Nissan / Hyundai / Kia / Subaru
Support 31+ Reset / Relearn Maintenance Functions

Meanwhile, the scan tool includes a variety of scheduled service functions to make reset and relearn maintenance a breeze in the workshop.

  • -Maintenance Light Reset: Reset the oil service lamp after changing the engine oil.
  • -Steering Angle Reset: Reset the steering angle to zero to keep the car running straight.
  • -Injector Coding: Write in the new injector code for the correct cylinder injection quantity.
  • -Electronic Parking Brake Reset: Help replace and reset the brake pad.
  • -ABS Bleeding: Help exhaust the air in ABS in an easy way.
  • -Throttle Matching: Initialize the throttle actuators to the default state.
  • -DPF Regeneration: Help remove the particulate matter to keep the trap stable.
  • -Suspension Level Calibration: Adjust the vehicle body height sensor for level calibration.
  • -Headlight Matching: Initialize the adaptive headlamp system.
  • -Gearbox Matching: Help complete the gearbox self-learning to improve gear shifting quality.
  • -Sunroof Initialization: Initialize the sunroof when to be locked off, or closed.
  • -Tooth Learning: Help to finish tooth learning after changing crankshaft in the car engine.

And EGR Adaption, ODO Reset, Airbag Reset, Transport Mode, A/F Reset, Stop/Start Reset, NOx Sensor Reset, AdBlue Reset (Diesel Engine Exhaust Gas Filter), Seat Calibration, Coolant Bleeding, Tire Reset, Windows Calibration, Language Change … still growing for more vehicle coverage than ever before, thanks to the regular software updates.
Note that the service function options vary by vehicle’s specifics (make, model, and year).

24 Languages Supported, Free to Switch

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

If you feel more comfortable with your native language, you can switch back and forth as necessary without encountering any sort of language barrier.

Professional Technical Support

Health Report Generate and Share: With Launch X431 ProS V4.0, you can generate a full system Diagnostic Report by ONE-CLICK. The reports can be sent to the office or directly to your customer. You can also print out the vehicle health report card.

Online Repair Resources: Provide more than 1600 vehicle models’ service & repair information, handbook, repair case, and operation skill.

View History: Once a vehicle diagnosis is performed, LAUNCH X431 ProS V4.0 will record every detail of the diagnostic process. The History function provides quick access to the tested vehicles and users can resume from the last operation, without the necessity of starting from scratch.

Maintenance Help: Including How-to Videos, operation skills, and user manual, Quick start guide, etc.

What If I meet with Issues during the diagnosis? For any problems found during the diagnosis, submit the feedback immediately. LAUNCH professional experts will provide perfect solutions for you as soon as possible.

Other Valuable Features You Need to Know

Easy Set-Up: There is no difficulty or a lot of fuss when it comes to the setup of this diagnostic scanner. The setup process is very easy, the Launch X431 ProS V4.0 support team will provide you a registration ID with an activation code. Then, you can utilize your serial number and codes to set up your scanner online.

Fast and Simple to Use: This is one of the fastest LAUNCH scanners on the market. It comes with a fast and smooth operating system to assist tackle problems very fast. Additionally, the scanner gives you instructions as you go, telling you what you want to do and the steps that you should take.

Operates on Android System: The scanner utilizes the Android 9.1 operating system. This makes the scanner to be easy to use just like a normal Android tablet. You will be able to access similar applications that are found on an Android tablet or phone. With this feature, you will be able to have the same functions as an Android phone but at the same time have the ability to power or diagnose engine issues.

Wireless Connectivity: If you want to perform other functions within the garage and still diagnose the vehicle, you can switch the device to a Bluetooth wireless connection instead of using the short cable. The tool comes with DBScarIV adaptor for creating a wireless Bluetooth connection.

Durable Construction: The code reader is sturdily constructed for longevity. It is made of durable plastic housing and it is drop resistant. Additionally, the scan tool is waterproof, dustproof, and greaseproof. In short, it can survive the tough garage floor conditions.

Final Verdict about LAUNCH ProS V4.0

The manufacturer offers 2 years of free online updates, and it is extremely easy to carry.

If you have been looking for a reliable, fast, and easy-to-use diagnostic scanner, use this LAUNCH ProS V4.0 on different car makes and models in your auto repair shop or garage. It will be a great tool for you.