988205RA9C Nissan SENSOR-SIDE AIRBAG CENTER, Price: 917.58$, Weight: 0.532kg

Center Side Airbag Impact Sensor

This safety sensor is a key part of the SRS airbag system. It is needed to detect side-impact forces near the middle of the vehicle body and report them to the airbag control unit in milliseconds. When the data matches a real crash pattern, the module can trigger the side airbags and/or curtain airbags to help protect the driver and passengers ?️.

How It Works

Inside the sensor is an accelerometer that measures rapid lateral acceleration (impact energy). The signal is converted into a precise electrical message and sent to the SRS control module. The module compares inputs from multiple sensors, checks plausibility, then decides whether deployment is required. This fast “cross-check” reduces false deployments while keeping response time extremely quick ⚡.

Why Replacement Matters

If the sensor is cracked, corroded, water-damaged, or has internal drift, it may send wrong readings. The result can be an SRS warning light, disabled airbag readiness, or delayed/incorrect deployment timing. In worst cases, airbags may not deploy during a real side collision, increasing injury risk. A faulty unit can also cause diagnostic trouble codes and failed inspection ✅.

Common Signs of a Problem

• SRS/Airbag warning lamp stays on
• Stored crash or sensor communication codes
• Intermittent faults after moisture or body repair

Compatibility

• Challenger