SRS Warning Light? Safety is Priority #1
The Airbag Control Module is the most critical safety system in your car. This guide explains how to identify common failures and when a professional is needed.
Note: While Highway 71 Auto Parts specializes in Engine and Transmission Control Modules (ECM/TCM), we provide these diagnostic guides as a free resource to help you troubleshoot other common automotive electronics. Please note that we do not currently stock replacement units for the module described in this specific guide.
What Does the SRS Module Do?
The Airbag Control Module (ACM) or SRS Module constantly monitors impact sensors and seatbelt tensioners. If it detects a crash, it initiates deployment in milliseconds. In modern vehicles, it also stores “Hard Codes” (Crash Data) that cannot be cleared by standard scan tools.
👨🔧 Critical Safety Warning
“Always disconnect the battery and wait at least 15 minutes before touching an SRS module or connector. Static electricity or a sudden voltage spike can trigger an accidental deployment, which can be fatal.”
Signs of a Faulty SRS Module
- ✅ Stays On After Start: The red SRS or “Airbag” light never goes out.
- ✅ Flickering Light: Indicates a loose connection or internal module failure.
- ✅ B1000 Code: The specific code for “Internal SDM Failure”—this means the brain itself is dead.
- ✅ Water Damage: Because many modules are under the center console, spilled drinks are a major cause of failure.
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