Air Bag Light On problems of the 2012 Toyota RAV4

I noticed that the �pass air bag off� light was on even though a passenger was sitting in the front passenger seat. I took it to the Toyota dealership that diagnosed it. They said the sensor in the passenger seat belt buckle had gone bad and needed replacing. What bothers me is the fact that the airbag light on the instrument panel didn't come on to indicate that something was wrong. I am not sure how long I have driven with this malfunction since the light that indicates the air bag being on or off is off to the side and in yellow rather than red to show that something is wrong. I had to pay for the diagnosis and repair. This should have been covered by an extended warranty by the manufacturer. The car only had 67k miles, being 7 years old.

Air bag light is on all the time and seat bell is flashing and front rotors excessive rust and only about 2 1/2 inches in middle the rotors.

The contact owns a 2012 Toyota Rav4. The contact stated that the air bag warning indicator illuminated. The vehicle was taken to the dealer; however, the diagnosis and repair information were unknown. The manufacturer was notified of the failure. The failure mileage was 18,000.