Using Airbag Service Tool v3.9 generally involves several steps. Below is a typical workflow for clearing crash data via the OBD2 port.
The software covers major American, European, and Asian manufacturers, including: airbag service tool v3.9
Clears hard codes and crash history from SRS units. Using Airbag Service Tool v3
: Clears hard codes and crash history from the Electronic Control Unit (ECU) that typically cannot be erased by standard OBD-II tools. Broad Vehicle Compatibility : Supports a vast array of manufacturers, including Mercedes-Benz Volkswagen Cost-Efficient Repair : Clears hard codes and crash history from
| | CG100 Programmer (Hardware + Software) | AST (Airbag Service Tool) Software | | :--- | :--- | :--- | | Method of Connection | Direct bench connection to the airbag ECU (often requires soldering or using included probes) | Typically via the vehicle's OBD-II port | | Primary Use Case | Professional, high-volume repair shop; requires ECU removal for deep-level repairs | Quick diagnostics and reset for common vehicles | | Microcontroller Support | Extremely broad. Supports Renesas, NEC, Infineon Tricore, Freescale, and more | More limited; focuses on common SRS modules accessible via OBD | | Additional Functions | Includes Odometer correction, CAS key programming, BCM reading, ISN/VIN calculation | Primarily focused on SRS/airbag crash data clearing and DTC management | | Typical Price Range | $200–$500 USD (professional-grade) | $50–$150 USD (budget-friendly diagnostic option) |
Technicians using v3.9 often talk about "reading the dump"—extracting the raw hex code from a car’s brain. One wrong character of code could mean the difference between a safe car and a rolling hazard.
Airbag modules communicate via several different protocols (K-Line, CAN, CAN FD, UART). The v3.9 tool automatically detects and switches between these protocols, eliminating the guesswork and the need for multiple adapters. This plug-and-play approach saves hours of troubleshooting.
