Note: Be aware that the vehicle's airbag system is a crucial safety component, and it's important that it's functioning properly. You are resetting it based on your own judgment, and you are responsible for verifying the integrity and functionality of your airbag system.
1. Turn the ignition key to the "On" position, but do not start the engine.
2. Locate the airbag reset switch. In the 2003 Ford Ranger, it's usually found underneath the dashboard, on the driver's side. It may be labeled "Airbag Reset" or "SRS Reset".
3. Press and hold the airbag reset switch for about 5 seconds. You may hear a chime or see the airbag light blink, indicating that the reset is in progress.
4. Release the reset switch and turn the ignition key to the "Off" position.
5. Wait for a few seconds, then turn the ignition key back to the "On" position.
6. The airbag light should now be off, indicating that the reset is complete.
Additional tip: If the airbag light remains on after following these steps, there may be a problem with the airbag system itself. In that case, it's best to have your vehicle diagnosed by a qualified mechanic to identify and fix the issue.