Comparison: Launch X431 Heavy Duty Module New HDIII VS Old One

The X431 HD old model will work with LAUNCH X431 V+, X431 PRO3, X431 PADII, and it also works with other Andorid tablets, witch comes with ROM 4G, RAM 8G.


The HD 3 module must work on any of the x431 v plus or pro3 or pad ii account which old customer have purchased before and have been activated by LAUNCH already.


Launch X431 heavy duty module HD Old heavy duty adapter HD III New heavy duty adapter
Image  图片1  图片2
Version Old New
Year Before 2019 After 2019
Price 748 usd(Free shipping) 795 usd(Free shipping)
Communication to the vehicle Bluetooth: YesWLAN: NOData cable: Yes Bluetooth: YesWLAN: YesData cable: Yes
Working voltage DC 9 ~36V
Power consumption Unknown ≤ 2W
Working temperature -20 to 70℃ -10 to 55℃
Storage temperature -30 to 80℃ Unknown
Storage humidity 10% to 80% Unknown


What is Launch X431 V+ heavy duty 3 new module

The new module is the latest adapter released in the year 2019, used for Launch X431 V+ heavy duty 3 (abbr. hd3) scan tool.

The image:


What is Launch X431 V+ heavy duty 2 old module

The module version 2 is old.

The image:


What’s the difference between HD 2 adapter and HD 3 adapter?

1.Hardware design

  1. HD-II Module

As the 2nd generation of heavy-duty module, it mainly functions as a VCI device for accessing vehicle data.



LED indicators: It is defined as follows(from left to right):

  • Power Indicator: It lights up when it is powered
  • Communication LED of Tablet: It illuminates when the module is communicating with the
  • Communication LED of Vehicle: It lights up once the module is connected to a vehicle’s
  • Communication LED of PC
  • Data I/O LED


2.Data I/O port

  • Communication Port of PC
  • Diagnostic Socket: To connect the included diagnostic
  • DC-IN power jack: To connect the power


B.HD-III Module

As the 3rd generation of heavy-duty module, it works as a vehicle communication interface device, which is used to read the vehicle data and then send it to the X-431 V+ via wireless BT/WLAN communication. The LED indicators enable you to easily identify the working status of the module.



  • LED indicators: It is defined as follows:
  • DC-IN power jack: For connecting the power
  • Diagnostic socket: For connecting the diagnostic
  • Vehicle: While communicating with the vehicle, the indicator lights up and flashes. Otherwise, it will not
  • Power: It illuminates solid red when the module is powered
  • BT: Blue indicates the module is working in wireless BT

◦I/O: It lights up when the module is connected to the diagnostic tool via data cable (Currently disabled and only reserved for subsequent function extension).

◦Wireless: It lights up when the module works as a wireless hotspot or network

  • Data I/O port: Currently disabled and only reserved for subsequent function


2.Module specification

  1. HD-II VCI module

Working temperature             -20 to 70℃

Working voltage                 DC 9 ~36V

Storage humidity                10% to 80%

Storage temperature             -30 to 80℃


2. HD-III VCI module

Power consumption                 ≤ 2W

Working voltage                        DC 9 ~36V

Working temperature              -10 to 55℃

Communication                         Via wireless BT/WLAN or data cable


WIFI module


  • Frequency range: 2412-2472MHz
  • Transmit power: 29dBm


Wireless BT module


  • Frequency range: 2402-2480MHz
  • Transmit power: 62dBm


3.VCI communication method

For different VCI modules, the communication methods vary.

A.HD-II module:



B.HD-III module:

Besides the BT communication, the HD-III VCI module comes loaded with a built-in WLAN module, which can work as a wireless hotspot or a network adaptor



4.Vehicle connection

(For Commercial Vehicle Version)

The method used to connect the VCI module to a vehicle’s DLC depends on the vehicle’s configuration as follows:

1.OBD II Vehicle Connection: Plug one end of the diagnostic cable into the vehicle’s DLC, and the other end into the diagnostic socket of the VCI module, and then tighten the captive


2.Non-OBD II Vehicle Connection: For vehicles with non-OBD II diagnostic socket, a non-16pin connector (adaptor cable) is


A. Using HD-II module

For trucks equipped with non-OBD II 16 PIN diagnostic sockets, choose any one of the following to proceed:





B. Using HD-III module




For commercial vehicles, refer to the above connection method to proceed.


For passenger vehicles, replace the “Non-16pin connector” with “OBD I adaptor” + “non-16pin connector (for passenger vehicles)”. Other connections shall also apply.


5.Package list

A.HD-II VCI module package list



B.HD-III VCI module package list



6. Vehicle List

Launch X431 HD II software/vehicle list


less heavy duty covered (42 brands)


HD III Add-on vehicle list


More heavy duty supported (up to 61 brands)

1  X431, USA FORD Diagnostic Software diesel

2  After the X431, heavy card processing system diagnostics software

3  ASTRA diagnostic software

4  Benz heavy duty diagnostic software

5  Bosch diesel diagnostic software

6  BREMACH diagnostic software

7  China heavy duty diagnostic Software

8  Cummins heavy duty diagnostic software

9  DAF diagnostic software

10  ERF diagnostic software

11  FAW Liberation diagnostic software

12  Foton Auman diagnostic software

13  FUSO diagnostic software

14  Hino diagnostic software

15  Hyundai heavy duty diagnostic software

16  Isuzu heavy duty diagnostic software

17  Iveco heavy duty diagnostic software

18  JAC heavy duty diagnostic software

19  Mack heavy duty diagnostic software

20  MAN diagnostic software

21  OBD heavy duty diagnostic software

22  SCANIA diagnostic software

23  Shangchai diagnostic software

24  Volvo heavy duty diagnostic software

25  WP diesel diagnostic software

26  X431, Airbus diagnostic software

27  X431, ALLISON transmission box diagnosis software

28  X431, Ashok Rejlander the diagnostic software

29  X431, Caterpillar heavy vehicles Diagnostic Software

30  X431, Chai heavy vehicle diagnostic software

31  X431, Chaoyang Diesel diagnostic software

32  X431, construction machinery diagnostic software

33  X431, CREDO heavy vehicle diagnostic software

34  X431, DETROIT engine diagnostic software

35  X431, Dongfeng commercial vehicle diagnostic software

36  X-431, Dongfeng Yufeng diagnostic software

37  X431, Freightliner heavy-duty truck diagnostic software

38  X431, full diesel diagnosis software

39  X431, HD ABS system diagnostic software

40  X431, hd_goldendragon diagnostic software

41  X431, hd_international vehicle diagnostic software

42  X431, HD_TATA diagnostic software

43  X431, hd_western_star vehicle diagnostic software

44  X431, heavy truck presentation software

45  X431, heavy vehicles Jiangling diagnostic software

46  X431, IRISBUS heavy vehicle diagnostic software

47  X431, IRIZAR heavy vehicle diagnostic software

48  X431, NEOPLAN heavy vehicle diagnostic software

49  X431, Renault diagnostic software for heavy vehicles

50  X431, SETRA heavy vehicle diagnostic software

51  X431, SITCAR heavy vehicle diagnostic software

52  X431, Stannic bavin diagnostic software

53  X431, Sterling heavy vehicle diagnostic software

54  X431, Sunlong bus ( SUNLONG ) diagnostic software

55  X431, sunwin bus ( SUNWIN ) diagnostic software

56  X431, UD Trucks 2F Nissan Diesel Diagnostic Software

57  X431, Yang Chai engine diagnostic software

58  X431, Zhongtong bus ( ZHONGTONG BUS ) diagnostic software

59  X431,BONLUCK diagnostic software

60  X431,HD_KENWORTH diagnostic software

61  Yuchai diagnostic software


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