Two problems related to air bag light on have been reported for the 2008 Toyota Matrix. The most recently reported issues are listed below.
My 2008 Toyota Matrix was under recall since I was notified in October 2019. At that time I was told that my car was not safe to drive and I was provided with a rental car. My car was repaired with the Toyota air bag remedy on June 11, 2020 but it seems that the remedy has caused the cover to pop up and a crease is forming across the middle of the airbag cover. Also, the passenger airbag indicator light says off when a passenger seat is occupied. The passenger indicator light worked properly when I last drove my car in October of 2019.
The contact owns a 2008 Toyota corolla Matrix. While driving various speeds, the air bag warning indicator remained illuminated. The vehicle was taken to the dealer, but was not diagnosed or repaired. The VIN was included in NHTSA campaign number: 15v285000 (air bags). While driving approximately 50 mph, the engine warning indicator illuminated. The vehicle was taken to the dealer where it was diagnosed that the engine had a system leak, incorrect power fluid, and a cross leak that needed to be repaired. The vehicle was not repaired. The manufacturer was not made aware of the failure. The approximate failure mileage was 102,000.