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237
4
4-6. Using other driving systems
Driving
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 condition or
modification.
• There is damage to the sonar sensors 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, the system’s auto-
matic braking ability will be reduced.
●The system is designed to avoid colli-
sions by automatic hard braking when
the vehicle’s reversing speed is less than approximately 5 km/h (3 mph).
However, the system does not guar-
antee that the vehicle will be able to avoid collisions 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 oper- ate.
●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 too close to the rear
bumper when the shift lever is set to
R. • Objects with a surface 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 vehi-
cles. • 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 not in a vertical direc- tion.
• Objects which are not perpendicular
to the ground. • Objects which are not directly in the
traveling direction of the vehicle.
• Objects which are uneven or wavy.
●When reversing the vehicle, the func-
tions may not be able to work properly or may cause a system malfunction if
the following conditions exist.
High frequency sound 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 vehicle’s system is transmitted near by.
• A vehicle equipped with the same sys-
tem is reversing toward your reversing direction.
●Weather conditions:• Extremely high or extremely low tem-
peratures in which the area near the
sonar sensor becomes too hot or too cold to operate.
• The sonar sensors or the rear bumper
near the sonar sensors are exposed to heavy rain or a significant amount
of water.
• Fog, snow or sandstorm, etc.
• Air is moving rapidly such as when a strong wind is blowing.
●Parts attached to the rear bumper near the sonar sensor:
• Commercial electronic parts (fog light,
fender pole, radio antenna) or com- mercial attachment parts (trailer hitch,
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2384-6. Using other driving systems
bicycle carrier, bumper guard) are
attached. • Parts that emit high frequency sound,
such as a horn or speaker, are
attached.
●Vehicle conditions:
• Ice, snow or mud is adhered to the sonar sensors or the rear bumper
near the sonar sensor.
• The vehicle is significantly inclined. • The ground clearance is significantly
reduced due to the vehicle’s loading
condition, etc. • When the sonar sensor is misaligned
due to a collision or an accident.
●Surrounding environment:
• A cloth banner, flag, hanging branch
or railroad crossing bars are present in the reversing direction.
• When reversing on a gravel or grassy
area. • When reversing in an area where
objects or walls are adjacent to the
vehicle such as narrow tunnels, nar- row bridges, narrow roads or narrow
garages.
• Wheel track or hole is present in the ground of the reversing direction.
• When reversing over a drainage cover
(grating cover).
• The path of the reversing direction is
inclined such as on a steep uphill.
• When reversing downhill.
• Reversing in a garage with a low ceil-
ing or a tunnel.
• A curb or step is present in the revers-
ing direction.
• There is a patch of snow rearward.
• There is a puddle of water.
• There is an obstacle that is next to an
object.
• Going back along a wall.
• The area where the road starts touch-
ing dirt and snow.
• When reversing on an uneven road.
●In circumstances su ch as the follow- ing, it may not be possible to avoid a
collision even when the system oper-
ates normally. • Roads are slippery.
• The tire air pressure is not correct.
• The tires have become worn. • Tire chains are installed.
• Tires which are not the designated
size are installed. • Emergency repairs were performed
using a puncture repair kit.
• The suspension was modified. • Vehicle driving is unstable due to acci-
dent or malfunction.
• The brake system warn ing light is illu-
minated.
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3307-2. Steps to take in an emergency
The following may indicate a prob-
lem with your transmission. Contact
any authorized Toyota retailer or
Toyota authorized repairer, or any
reliable repairer or commercial tow-
ing service before towing.
The engine is running but the
vehicle does not move.
The vehicle makes an abnormal
sound.
From the front
Use a towing dolly under the rear
wheels.
WA R N I N G
■After towing
Make sure to remove the towing eye-
let. If not removed, the SRS airbags may
not deploy correctly if the vehicle is
involved in a frontal collision, or the fuel pump shutoff system may not
operate correctly if involved in a rear
collision.
NOTICE
■To prevent damage to the vehicle when towing using a wheel-lift
type truck
●Do not tow the vehicle from the rear when the engine switch is off. The
steering lock mechanism is not
strong enough to hold the front wheels straight.
●When raising the vehicle, ensure adequate ground clearance for tow-
ing at the opposite end of the raised
vehicle. Without adequate clear-
ance, the vehicle could be dam- aged while being towed.
■To prevent damage to the vehicle when towing with a sling-type
truck
Do not tow with a sling-type truck, either from the front or rear.
■To prevent damage to the vehicle during emergency towing
Do not secure cables or chains to the
suspension components.
■When towing down a long slope
Use a wheel lift-type or flat bed truck. If a wheel lift-type or flat bed truck is
not used, the brakes may overheat,
leading to poor brake performance.
Situations when it is neces-
sary to contact dealers
before towing
Towing with a wheel-lift type
truck