Airbag Control Module

📖 YOUCANIC Automotive Glossary

The Airbag Control Module (SRS Module or ACM) is the central computer managing the vehicle’s entire supplemental restraint system — processing signals from crash sensors, making deployment decisions for front, side, curtain, and knee airbags, controlling seatbelt pretensioners, managing the occupant detection system, and communicating airbag readiness status to the dashboard warning light. The module makes deployment decisions within 15-30 milliseconds of impact detection, calculating crash severity and direction to determine which airbags to deploy and at what force level.

The SRS warning light means the system is disabled and airbags will not deploy in a crash. Common causes: clock spring failure, seat belt buckle switch, side impact sensor wiring, and stored crash data from a previous collision. The YOUCANIC UCAN-II reads SRS-specific codes, performs crash data clearing after collision repair (saving hundreds vs. module replacement), and runs ODS/OPDS initialization. Never ignore the SRS warning light — it directly affects occupant safety.