40Pin & 94Pin Diagnostic Cable Set for Li Auto
The 40Pin & 94Pin Diagnostic Cable Set is a comprehensive, professional-grade interface kit designed for complete vehicle-level diagnostics and programming of Li Auto (Li Xiang) electric extended-range vehicles (EREVs). This set includes two specialized cables: a 40-pin connector for standard vehicle network access and a 94-pin connector for deep-level, direct module programming and manufacturer-specific service functions. Together, they provide technicians with the physical interface required to communicate with all electronic control units (ECUs), from infotainment and body control to the core high-voltage powertrain and battery management systems, using official or advanced diagnostic software.
Function
- 40-Pin Cable: Provides standard OBD-like access for reading/clearing fault codes, viewing live data, and performing basic adaptations on the vehicle's main communication networks (CAN, LIN, Ethernet).
- 94-Pin Cable: Enables direct, low-level communication with individual ECUs for advanced programming (flashing), software updates (SOTA/FOTA), module replacement coding, and security access.
- Perform comprehensive system scans across all vehicle domains (powertrain, chassis, body, ADAS, infotainment).
- Program and initialize new or replaced control modules (e.g., Gateway, BMS, Drive Motor Controller, ADAS ECU).
- Access and calibrate Advanced Driver-Assistance Systems (ADAS) sensors (cameras, radars).
- Diagnose the high-voltage battery system, range extender engine, and thermal management system in depth.
- Execute manufacturer-specific service functions and guided troubleshooting procedures.
Support Car Models
This dual-cable set is engineered to support the full current lineup of Li Auto vehicles, which utilize these specific diagnostic ports for different service levels. Supported models include:
- Li Auto L9 (Full-Size Smart Flagship SUV)
- Li Auto L8 (Six-Seat Smart Premium SUV)
- Li Auto L7 (Five-Seat Smart Flagship SUV)
- Li Auto L6 (Midsize Smart SUV)
- Li Auto ONE (The inaugural six-seat flagship EREV model)
- Future Li Auto models expected to maintain compatibility with the 40-pin and 94-pin diagnostic interface standards.
Critical Note: Full functionality requires compatible, licensed diagnostic software (such as Li Auto's official service platform or professional-grade aftermarket tools) with the appropriate security certificates. The 94-pin cable is typically used for advanced procedures following specific manufacturer repair instructions.



