2012 Lexus HS 250h Owners Manual - Page 245
2012 Lexus HS 250h Manual
Page 245 highlights
2-4. Using other driving systems Pre-Collision System∗ When the radar sensor detects possibility of a frontal collision, the pre-collision system such as the brakes and seat belts are automatically engaged to lessen impact as well as vehicle damage.
245
2-4. Using other driving systems
2
When driving
Pre-Collision System
∗
∗
: If equipped
When the radar sensor detects possibility of a frontal collision, the pre-col-
lision system such as the brakes and seat belts are automatically engaged
to lessen impact as well as vehicle damage.
■
Pre-collision seat belts (front seat belts only)
If the pre-collision sensor detects that a collision is unavoidable, the pre-
collision system will retract the seat belt before the collision occurs.
The same will happen if the driver makes an emergency braking or loses
control of the vehicle. (
→
P. 78)
However, when the VSC system is disabled, the system will not operate in
the event of skidding.
■
Pre-collision brake assist
When there is a high possibility of a frontal collision, the system applies
greater braking force in relation to how strongly the brake pedal is
depressed.
■
Pre-collision braking
When there is a high possibility of a frontal collision, the system warns the
driver using a warning light, warning display* and buzzer. If the system
determines that a collision is unavoidable, the brakes are automatically
applied to reduce the collision speed. Pre-collision braking can be dis-
abled using the pre-collision braking off switch.
*:
When the pre-collision braking system activates, “BRAKE!” will appear
on the multi-information display and head-up display (if equipped), and
the warning light will begin flashing rapidly. (
→
P. 520)
■
Driver monitor system (if equipped)
When the system determines that there is a possibility of a frontal collision,
and the driver is not facing forward, PCS warnings are given in advance to
warn the driver. If the driver continues to be not facing forward, and a high
possibility of a frontal collision is detected, PCS informs the driver of high
possibility of a frontal collision by performing slight braking to provide a
physically warning (pre-collision alert braking). (
→
P. 247)