Launch X431 V+ HD III VS HD-II working with X431 V+

What advanced features LAUNCH X431 V+ HD3 module has that HD-II module has no?

Good to know

HD-II module: compatible with X431 V+, X431 PRO3, X431 PADII etc, only available for Commercial Vehicles.

LAUNCH HD-III module : compatible with X431 V+, pad3, pro3 etc, only available for X-431 V+ of Commercial Vehicle Version.


Please buy HD-III module instead of HD-II module, because HD-II module is already stop to produce.

There are main 3 differences between X431 V+ HD-III module & HD-II module

Different 1.

HD-III module: in Blue color

HD-II module: in Red color

    launch x431 HD III Scan Tool outlook

As the 3rd generation of heavy-duty module,Launch x431 HD iii scan tool 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.

1 DC-IN power jack: For connecting the power adaptor.

2 Diagnostic socket: For connecting the diagnostic cable.

LED indicators: It is defined as follows:

 Vehicle: While communicating with the vehicle, the indicator lights up and flashes. Otherwise, it will not illuminate.

 Power: It illuminates solid red when the module is powered on.

 BT: Blue indicates the module is working in wireless BT mode.

 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 adaptor.

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

HD-II Module outlook

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 on.

 Communication LED of Tablet: It illuminates when the module is communicating with the tablet.

 Communication LED of Vehicle: It lights up once the module is connected to a vehicle’s DLC.

 Communication LED of PC

 Data I/O LED

Data I/O port
Communication Port of PC
Diagnostic Socket: To connect the included diagnostic cable.
DC-IN power jack: To connect the power adaptor.

Different 2.

HD-III module: send the vehicle data to the diagnostic tool via wireless Bluetooth or Wlan

HD-II module: send the vehicle data to the diagnostic tool via wireless Bluetooth.

WIFI module:


 Frequency range: 2412-2472MHz

 Transmit power: 19.29dBm

Wireless BT module:


 Frequency range: 2402-2480MHz

 Transmit power: 16.62dBm

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