Lexus ES 250 Owner's Manual page 303

302
4-5. Using the driving support systems
WARNING
Do not replace a rear radar sensor
●
with a part other than a genuine part.
Do not damage the rear radar sensors,
●
and always keep the radar sensors and
their surrounding area on the bumper
clean.
● If the area around a rear radar sensor
is subjected to an impact, the system
may not operate properly due to a
sensor malfunction. Have the vehicle
inspected by your Lexus dealer.
● Observe the rear radar sensor han-
dling precautions. (P.262)
The Parking Support Brake function
■
(rear-crossing vehicles) will operate
when
The function will operate when the PKSB
OFF indicator is not illuminated or flashing
(P.99, 100) and all of the following condi-
tions are met:
● Engine output restriction control
• The Parking Support Brake is enabled.
• The vehicle speed is 15 km/h (9 mph) or
less.
• Vehicles are approaching from the right
or left at the rear of the vehicle at a travel-
ing speed of more than approximately 8
km/h (5 mph)
• The shift lever is in R.
• The Parking Support Brake determines
that a stronger than normal brake opera-
tion is necessary to avoid a collision with
an approaching vehicle.
Brake control
●
• Engine output restriction control is oper-
ating.
• The Parking Support Brake determines
that an emergency brake operation is
necessary to avoid a collision with an
approaching vehicle.
■ The Parking Support Brake function
(rear-crossing vehicles) will stop operat-
ing when
The function will stop operating if any of the
following conditions are met:
● Engine output restriction control
• The Parking Support Brake is disabled.
• The collision becomes avoidable with
normal brake operation.
• A vehicle is no longer approaching from
the right or left at the rear of the vehicle.
Brake control
●
• The Parking Support Brake is disabled.
• Approximately 2 seconds have elapsed
since the vehicle was stopped by brake
control.
• The brake pedal is depressed after the
vehicle is stopped by brake control.
• A vehicle is no longer approaching from
the right or left at the rear of the vehicle.
■ Re-enabling the Parking Support Brake
function (rear-crossing vehicles)
P.293
■ Detection area of the Parking Support
Brake function (rear-crossing vehicles)
The detection area of the Parking Support
Brake function (rear-crossing vehicles) dif-
fers from the detection area of the RCTA
function (P.283). Therefore, even if the
RCTA function detects a vehicle and pro-
vides an alert, the Parking Support Brake
function (rear-crossing vehicles) may not
start operating.
■ Conditions under which the Parking
Support Brake function (rear-crossing
vehicles) will not detect a vehicle
The Parking Support Brake function (rear-
crossing vehicles) is not designed to detect
the following types of vehicles and/or
objects:
Vehicles approaching from directly
●
behind
● Vehicles backing up in a parking space
next to your vehicle
Vehicles that the sensors cannot detect
●
due to obstructions