Why my airbag light is on?

Learn the most comon reasons why the airbag warning light stays on, what it means, and what should do to fix it safely.

Pedro Llanes

12/28/20253 min read

Why Is the Airbag Light On?

The airbag light is on because the SRS system detected a fault and disabled the safety system to prevent an unsafe deployment.
In simple terms: if an accident happens, the vehicle will not protect you.

When the airbag light stays on, you are always in one of these two scenarios.

Scenario 1: The vehicle was involved in an accident

“I already replaced all the airbags and seat belts, but the airbag light is on.”

The reason is simple: the airbag control module locks itself after an impact.

SRS modules are designed to be used only once.
When a crash occurs, the module stores the event internally and becomes unusable. It does not matter if every airbag and seat belt has been replaced.

If the module is not replaced or properly reset, the system will never work again.

What happens if the module is not reset?

Simple: nothing happens when it should.

In a second crash:

  • The airbags will not deploy

  • The seat belts will not tighten

  • The vehicle will not protect you

Additionally, if the airbag light is on:

  • The vehicle cannot pass inspection

  • It should not be driven

  • In many states, driving like this is illegal

Driving this way means operating a vehicle with no active safety system.

Scenario 2: The vehicle was never in an accident

The airbag light turned on suddenly

In this case, the system detected an internal problem and shut itself down to avoid a dangerous deployment.

When the airbag light turns on without an accident, it always happens for a specific reason.

Common causes when there was no accident
Deep interior cleaning (detailing)

If the airbag light is on after a detailing, this is a very common cause.

Seats contain multiple SRS sensors and connectors.
During cleaning with liquids, steam, or pressure, it is easy to:

  • Wet a connector

  • Damage a sensor

  • Create a false electrical contact

That alone is enough for the airbag light to turn on.

Weak or faulty battery

The airbag system requires stable voltage.

If the battery is weak, has voltage spikes, or was replaced incorrectly, the module detects that it cannot deploy the airbags safely and shuts the system down.

Loose connectors under the seats

Moving the seats, placing objects underneath, or previous work can loosen critical connectors.

A single loose connector can cause the airbag light to stay on.

Cut or poorly repaired wiring

Very common after electrical installations or improper repairs.

The module detects the fault immediately and disables the entire SRS system.

Is it safe to drive if the airbag light is on?

No.

While the airbag light is on:

  • You have no airbags

  • You have no seat belt pretensioners

  • You have no protection

If an accident happens, everything depends on luck.

How is this properly fixed?

The correct process is:

  1. Read the SRS fault codes (DTCs) using a compatible diagnostic tool

  2. Contact me for help interpreting those codes

  3. Follow the correct procedure based on the issue (repair, reset, or module replacement)

This is serious. One mistake here can cost a life.

Conclusion.

If the airbag light is on, your vehicle is not safe, even if it feels normal to drive.

Every day you continue driving like this:

  • You are exposed

  • You are trusting a system that is disabled

  • You are postponing a serious safety problem

This is something you should always keep in mind whenever you drive with the airbag light on.

FAQ.

Can I clear the airbag light by disconnecting the battery?

Only in scenario 2, and only if the fault was temporary.
This is not a guaranteed fix.

How much does it cost to reset an SRS module?

It depends on the module.
In most cases, prices range between $50 and $80.
For high-security modules, costs can range from $150 to $250.

Is it legal to drive with the airbag light on?

No.
In addition, if you are involved in an accident, you may face serious insurance issues.