Toyota Sienna 2021, Manual

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4-5. Using the driving support systems
mately 9 mph (15 km/h) or less.
• Vehicles are approaching from the
right or left at the rear of the vehi-
cle at a traveling speed of approx-
imately 5 mph (8 km/h) or more.
• The shift lever is in R.
• The Parking Support Brake deter-
mines that a stronger than normal
brake operation is necessary to
avoid a collision with an approach-
ing vehicle.
● Brake control
• Hybrid system output restriction
control is operating
• The Parking Support Brake deter-
mines that an emergency brake
operation is necessary to avoid a
collision with an approaching vehi-
cle.
■ The Parking Support Brake
function (rear-crossing vehi-
cles) will stop operating when
The function will stop operating if
any of the following conditions are
met:
● Hybrid system output restriction
control
• The Parking Support Brake is dis-
abled.
• 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 dis-
abled.
• 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.
■ Detection area of the Parking
Support Brake function (rear-
crossing vehicles)
The detection area of the Parking
Support Brake function (rear-cross-
ing vehicles) differs from the detec-
tion area of the RCTA function
(

P.307). Therefore, even if the
RCTA function detects a vehicle
and provides an alert, the Parking
Support Brake function (rear-cross-
ing vehicles) may not start operat-
ing.
■ Situations in which the system
may not operate properly

P.308
■ Situations in which the system
may operate even if there is no
possibility of a collision

P.309