Corolla

For the front passenger's airbag of certain vehicles, there may not be sufficient amount of a gas generating propellant in the inflator, due to improper loading of the propellant, and therefore, the propellant may become powdery from the vibrations of the vehicle. If the airbag is deployed with an affected propellant, the internal pressure may rise excessively and cause the inflator housing to rupture. If this occurs, the component fragments may fly out and cause injury to the vehicle occupants.

For compressed natural gas (CNG) vehicles, the airtight plug on the high pressure regulator that supplies the fuel can become loose due to the fluctuation of the imposed pressure at the time of engine start, because the plug is not sufficiently tightened. If this problem is left unattended, the O-ring on the plug could be damaged causing fuel leakage.

For the shift lock on the automatic transmission, the link, which is for releasing the lock, can be stuck on the guide, because the resin-made guide is not properly shaped on certain vehicles. If this happens, the shift lock remains released, and the shift lever can be shifted from the Park (P) position without pressing the brake pedal.