1999 Toyota Avalon Owners Manual - Page 46

'99 AVALON (USA/CANADA) −U If the severity of the impact is below the above threshold level, the SRS airbags may not deploy. However, this threshold velocity will be considerably higher if the vehicle strikes an object, such as a parked vehicle or sign pole, which can move or deform on impact, or if it is involved in an underride collision (e.g. a collision in which the nose of the vehicle "underrides", or goes under, the bed of a truck, etc.). It is possible with collision severity at the marginal level of airbag sensor detection and activation that only one of your vehicle's two airbags will deploy. For the safety of all occupants, be sure to always wear seat belts. Collision from the rear Collision from the side Vehicle rollover The SRS airbag system is designed to activate in response to a severe frontal impact within the shaded area between the arrows in the illustration. There may be the case that the SRS airbags will not activate with such an impact in which the occupant wearing the seat belt correctly would not get serious injury. The SRS airbags will deploy if the severity of the impact is above the designed threshold level, comparable to an approximate 25 km/h (15 mph) collision in the U.S.A. and 30 km/h (18 mph) collision in Canada when impacting straight into a fixed barrier that does not move or deform. The SRS airbags are not designed to inflate if the vehicle is subjected to a side or rear impact, if it rolls over, or if it is involved in a low−speed frontal collision. 46