Description
The Launch X431 SmartLink HD is a professional heavy-duty diagnostic expansion solution designed to extend compatible Launch X431 diagnostic tablets to commercial vehicles, trucks, buses, construction equipment and other heavy-duty applications.
Built on the SmartLink C 2.0 platform, it is the newer-generation replacement for Launch’s previous HDIII interface and provides faster, more stable vehicle communication together with a visual operating interface.
SmartLink HD supports full-system heavy-duty diagnostics including reading and clearing fault codes, viewing live data, performing active tests and accessing supported special functions.
Depending on installed diagnostic software and adapter configuration, the system supports a wide range of 12V and 24V commercial and heavy-duty vehicles, including trucks, buses, construction machinery, agricultural machinery, trailers and selected new-energy commercial vehicles.
Communication options include Bluetooth, Wi-Fi, USB and Ethernet, making it suitable for both local workshop diagnostics and supported remote diagnostic applications.
Key Features
Professional heavy-duty diagnostic expansion module
SmartLink C 2.0 platform
Upgraded replacement for Launch HDIII
Full-system commercial vehicle diagnostics
Read and clear diagnostic trouble codes
Live-data monitoring
Bi-directional/actuation testing on supported systems
Heavy-duty special functions
Supports 12V and 24V applications depending on configuration
Trucks and buses
Construction equipment
Agricultural machinery
Trailers
Selected new-energy commercial vehicles
Bluetooth connectivity
Wi-Fi connectivity
USB connectivity
Ethernet connectivity
Faster and more stable communication than previous-generation HD interface
Compatible with selected Launch X431 PRO3, PRO3S, V+ and PRO5 platforms
Important: The SmartLink HD is primarily an expansion/interface solution and cannot normally operate as a complete standalone diagnostic scanner. A compatible Launch X431 tablet, appropriate commercial-vehicle diagnostic software licence and required vehicle adapters may be necessary.













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