2434-6. Using other driving systems
4
Driving
nated.
●In the following cases, the
Reverse Automatic Braking (RAB)
system cannot be operated.
• The RAB OFF indicator is illumi-
nated.
●In the following cases, the func-
tions may not be able to properly
work. Promptly contact a Toyota
dealer to have the system
inspected.
• A sticker, paint, or a chemical is applied to the sonar sensors or
the rear bumper near the sonar
sensor.
• The rear bumper is modified.
• The rear bumper has been
removed and attached.
• The ground clearance is changed
due to the vehicle’s loading condi-
tion or modification.
• There is damage to the sonar sen-
sors or the rear bumper near the
sonar sensor.
• The rear bumper is exposed to
strong impact, or the rear bumper
is deformed.
●On a steep hill, t he system’s auto-
matic braking ability will be
reduced.
●The system is designed to avoid
collisions by automatic hard brak-
ing when the vehicle’s reversing
speed is less than approximately
3 mph (5 km/h). However, the sys-
tem does not guarantee that the
vehicle will be able to avoid colli-
sions in any situation.
●If the vehicle is reversed at an
extremely slow speed, the driver’s
operation may be prioritized. In
this case, automatic braking will
not operate.
●The system may not be able to
detect and apply the brake with
the following objects.
• Sharp or thin objects such as poles, fences and ropes which
may not reflect the sound wave
emitted from the sonar sensor.
• Objects that are t oo close to the
rear bumper when the shift lever is set to R.
• Objects with a su rface which may
not reflect the sound wave emitted
from the sonar sensor such as a
chain link fence.
●Objects the system is not
designed to detect and apply
brake.
• Pedestrians.
• Moving objects including moving vehicles.
• Objects which absorbs sound waves such as cloth or snow.
• Objects whose surface has a
diagonal angle.
• Objects that are low to the ground such as parking blocks.
• Objects that are high above the ground such as objects hanging
from above.
• Objects that are out of range of
the center of the vehicle in the
horizontal direction.
• Objects that are n ot in a vertical
direction.
• Objects which are not perpendicu-
lar to the ground.
• Objects which are not directly in the traveling direction of the vehi-
cle.
• Objects which a re uneven or
wavy.
●When reversing the vehicle, the
functions may not be able to work
properly or may cause a system
malfunction if the following condi-
tions exist.
High frequency so und from other
sources are nearby:
• Horn sound from another vehicle.
• Engine sound from other vehicles.
• Sound of an air brake.
• Vehicle detection equipment or a
sonar from another vehicle.
• A sound wave with a frequency similar to the veh icle’s system is
transmitted near by.
• A vehicle equipped with the same system is reversing toward your
reversing direction.
●Weather conditions:
• Extremely high or extremely low
