5 Signs of a Failing Airbag Sensor, What to Look Out For

5 Signs of a Failing Airbag Sensor, What to Look Out For

Every driver knows the importance of having a functioning airbag in a vehicle. It is a safety feature in a car designed to inflate and deflate rather quickly in a collision. As it serves to protect your life, it must be in top shape and working condition. 

An essential aspect of this is the airbag sensor, which is the device that serves to detect a rapid deceleration in the car and generate a signal. It then electronically communicates all vital information with the ECU and all other components in the airbag system. 

The good thing is that your car’s airbag control computer tests the sensor circuit and checks if it’s still functioning correctly every time you start the engine. The problem is if the sensor has already malfunctioned, meaning that it won’t communicate with all other components. 

In this article, we will share the five tell-tale signs of a failing airbag sensor you must on the lookout for:

  1. Airbag light lit up

The airbag light is the most apparent indicator of a failing airbag sensor. If you see the light lit up or flashing on the dashboard, it means that it has a disabled function. Keep in mind that this warning light flashes in a certain pattern, which is why you must check the car’s manual to see if it’s working properly.

  1. Depleted airbag battery 

Pay particular attention to your airbag battery, particularly if your car’s main battery has recently been drained. As it may have been depleted, you’ll likely see the warning light flashing on your dashboard. Fret not, as all it takes is to recharge your vehicle’s battery fully. Just don’t forget to remove the soft-code error using the diagnostic scan tool!

  1. Impaired clock spring

The airbag clock spring serves to maintain the consistency between the electrical wiring and the airbag for the uninitiated. It works by consistently intertwining in and out against the steering wheel. However, the problem starts when the circuit bands begin to wear and tear, translating into a code error. As it can be quite hard to diagnose the clock spring, be sure to send your vehicle to an auto shop to get it checked and fixed so that the system can function optimally.

  1. Worn-out airbag module

The airbag module is designed to control the airbag’s deployment, store crash data, and exchange information with the car’s engine. However, it can get damaged over time by getting exposed to either water or light moisture. For this reason, be sure to locate it under the front passenger seat or the driver’s seat and get it fixed as soon as possible.

  1. Failed diagnostic test

If you aren’t sure whether or not your airbag sensor is failing but suspect it is, the best course of action is to inspect it using a diagnostic scan tool. If you don’t know how to proceed, bring your vehicle to a professional mechanic, and they’ll check your airbag sensor and perform the necessary repairs.


At this point, you now know what signs you should look out for in a failing system, as far as your airbag sensor is concerned. As outlined above, be wary of airbag light lit up, depleted battery, impaired clock spring, worn-out module, and failed diagnostic test. When you notice one or some of these signs, be sure to have your airbag system serviced by a professional technician to ensure your utmost driving safety while driving!

We offer pre and post-accident services such as airbag module reset, webbing replacement, instrument cluster repair, and seat belt repair in Westfield, MA. If you’re showing some signs of a failing airbag sensor mentioned above, check our package and add it to your cart now!

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