Lexus ES 2015 Owner's Manual page 230

228
4-5. Using the driving support systems
If the pre-collision warning timing is
changed, emergency steering assist tim-
ing will also be changed accordingly.
If late is selected, emergency steering
assist would not operate in case of an
emergency.
Operational conditions for each pre-collision function
The pre-collision system is enabled and the system determines that the possibility of a fron-
tal collision with a detected object is high.
The system may not operate in the following situations:
• If a 12-volt battery terminal has been disconnected and reconnected and then the vehicle
has not been driven for a certain amount of time
• If the shift lever is in R
• When the VSC OFF indicator is illuminated (only the pre-collision warning function will
be operational)
The operation speeds and operation cancellation for each function is listed below.
Pre-collision warning
Detectable objects
Preceding and stopped vehi-
cles
Oncoming vehicles
Bicyclists and pedestrians
While the pre-collision warning function is operating, if the steering wheel is operated heav-
ily or suddenly, the pre-collision warning may be cancelled.
1
Early
2 Middle
This is the default setting.
3 Late
Vehicle speed
Approx. 10 to 180 km/h (7 to
110 mph)
Approx. 10 to 180 km/h (7 to
110 mph)
Approx. 10 to 80 km/h (7 to
50 mph)
Relative speed between your
vehicle and object
Approx. 10 to 180 km/h (7 to
110 mph)
Approx. 20 to 180 km/h (13
to 110 mph)
Approx. 10 to 80 km/h (7 to
50 mph)