Airbag light staying on after cranking?

200,000 MILES • 5.9L • 4WD • MANUAL • DIESEL
Avatar
NFARA
  • MEMBER
  • 2 POSTS
Airbag light staying on after cranking truck, so I changed the clock spring and airbag light when off for couple days after cranking truck. Now I turn key, all lights and buzzer come on as normal, crank truck and all light go off and then the airbag lights comes back on and will go off.
Oct 14, 2026 at 5:51 AM
Avatar
CARADIODOC
  • ✓Experienced Mechanic
  • 34,390 POSTS
As you described it, that sounds like normal operation. When the ignition switch is turned on, the Air Bag light will turn on for six seconds while a bunch of system tests takes place. The light turns off when the tests pass, then the system is armed.

If that warning light turns on at any other times, there will be a diagnostic fault code in the SRS Computer. That code should be read and recorded, then include the code number in your reply and I'll look up the definition for you. If there is a code referencing the "squib" or "initiator circuit", those would be from the clock spring. Once erased, that code shouldn't come back.

There are some inexpensive code readers now that will read codes in the Supplemental Restraint Computer, (SRS), and Anti-Lock Brake systems, but in the past they only read codes in the Engine Computer. You may need to visit a mechanic with a scanner to read the Air Bag codes. The people at many auto parts stores may be able to read them for you for free too.

Let me know what you find.
Oct 14, 2026 at 3:09 PM
Add a reply
Join 2CarPros for free, one of the most advanced car repair communities on the internet. From first-time drivers to seasoned mechanics, everyone is welcome to reply, share details, and get better answers. You can add a temporary image or video first; uploads are limited to 20 MB.

Frequently Asked Problems for This Vehicle