Lexus ES-300 2001 Manual page 174

16E023
The SRS front airbag system is designed to activate
in response to a severe frontal impact within the
shaded area between the arrows in the illustration.
The SRS front 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 when impacting straight into a fixed barrier that
does not move or deform.
If the severity of the impact is below the above threshold
level, the SRS front 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 that in some collisions at the lower zone of
airbag sensor detection and activation the SRS airbags
and seat belt pretensioners will not operate all together.
For the safety of all occupants, always wear your seat
belts properly.
COMFORT ADJUSTMENT
157