2304-5. Using the driving support systems
• If a vehicle ahead has extremely high
ground clearance
• If a vehicle ahead is carrying a load
which protrudes past its rear bumper • If a vehicle ahead is irregularly
shaped, such as a tractor or side car
• If a vehicle ahead is a child sized bicy- cle, a bicycle that is carrying a large
load, a bicycle ridden by more than
one person, or a uniquely shaped bicycle (bicycle with a child seat, tan-
dem bicycle, etc.)
• If a pedestrian/or the riding height of a bicyclist ahead is shorter than approx-
imately 1 m (3.2 ft.) or taller than
approximately 2 m (6.5 ft.) • If a pedestrian/bicyclist is wearing
oversized clothing (a rain coat, long
skirt, etc.), making their silhouette obscure
• If a pedestrian is bending forward or
squatting or bicyclist is bending for- ward
• If a pedestrian/bicyclist is moving fast
• If a pedestrian is pushing a stroller, wheelchair, bicycle or other vehicle
• When driving in inclement weather
such as heavy rain, fog, snow or a
sandstorm • When driving through steam or smoke
• When the surrounding area is dim,
such as at dawn or dusk, or while at night or in a tunnel, making a detecta-
ble object appear to be nearly the
same color as its surroundings
• When driving in a place where the sur- rounding brightness changes sud-
denly, such as at the entrance or exit
of a tunnel • After the engine has started the vehi-
cle has not been driven for a certain
amount of time • While making a left/right turn and for a
few seconds after making a left/right
turn • While driving on a curve and for a few
seconds after driving on a curve
• If your vehicle is skidding • If the front of the vehicle is raised or
lowered
• If the wheels are misaligned
• If a wiper blade is blocking the front
camera • The vehicle is being driven at
extremely high speeds
• When driving on a hill • If the radar sensor or front camera is
misaligned
●In some situations such as the follow-
ing, sufficient braking force may not
be obtained, prev enting the system from performing properly:
• If the braking functions cannot operate
to their full extent, such as when the brake parts are extremely cold,
extremely hot, or wet
• If the vehicle is not properly main- tained (brakes or ti res are excessively
worn, improper tire inflation pressure,
etc.)
• When the vehicle is being driven on a gravel road or other slippery surface
■If VSC is disabled
●If VSC is disabled ( P.358), the pre-collision brake assist and pre-col-
lision braking functions are also disa-
259
4
4-5. Using the driving support systems
Driving
to inform the driver of the need for cau-
tion while driving. If a warning message is shown on the multi-information dis-
play, read the message and follow the
instructions. ( P.222, 520)
■When the sensor may not be cor- rectly detecting the vehicle ahead
In the case of the following and depend-
ing on the conditions, operate the brake pedal when deceleration of the system
is insufficient or operate the accelerator
pedal when acceleration is required.
As the sensor may not be able to cor-
rectly detect these types of vehicles, the
approach warning ( P.255) may not be activated.
●Vehicles that cut in suddenly
●Vehicles traveling at low speeds
●Vehicles that are not moving in the
same lane
●Vehicles with small rear ends (trailers
with no load on board, etc.)
●Motorcycles traveling in the same lane
●When water or snow thrown up by the surrounding vehicles hinders the
detecting of the sensor
●When your vehicle is pointing
upwards (caused by a heavy load in
the luggage compartment, etc.)
●Preceding vehicle has an extremely
high ground clearance
■Conditions under which the vehi-
cle-to-vehicle distance control
mode may not function correctly
In the case of the following conditions,
operate the brake pedal (or accelerator
pedal, depending on the situation) as necessary.
As the sensor may not be able to cor-
rectly detect vehicl es ahead, the system may not operate properly.
●When the road curves or when the lanes are narrow
●When steering wheel operation or your position in the lane is unstable
●When the vehicle ahead of you decel-erates suddenly
●When driving on a road surrounded by a structure, such as in a tunnel or on a
bridge
●While the vehicle speed is decreasing to the set speed after the vehicle
2704-5. Using the driving support systems
●Preceding vehicle has an extremely
high ground clearance
■Conditions under which the vehi-
cle-to-vehicle distance control mode may not function correctly
In the case of the following conditions,
operate the brake pedal (or accelerator pedal, depending on the situation) as
necessary.
As the sensor may not be able to cor- rectly detect vehicles ahead, the system
may not operate properly.
●When the road curves or when the
lanes are narrow
●When steering wheel operation or
your position in the lane is unstable
●When the vehicle ahead of you decel-
erates suddenly
●When driving on a road surrounded by
a structure, such as in a tunnel or on a bridge
●While the vehicle speed is decreasing to the set speed after the vehicle
accelerates by depr essing the accel-
erator pedal
307
4
4-5. Using the driving support systems
Driving
sensor from detecting it. Pay particular
attention to the following objects:
●Wires, fences, ropes, etc.
●Cotton, snow and other materials that
absorb sound waves
●Sharply-angled objects
●Low objects
●Tall objects with upper sections pro-
jecting outwards in the direction of your vehicle
People may not be detected if they are
wearing certain types of clothing.
■Situations in which the system may not operate properly
Certain vehicle conditions and the sur-
rounding environment may affect the ability of a sensor to correctly detect
objects. Particular instances where this
may occur are listed below.
●There is dirt, snow or ice on a sensor.
(Cleaning the sensors will resolve this problem.)
●A sensor is frozen. (Thawing the area will resolve this problem.)
In especially cold weather, if a sensor
is frozen the sensor display may be displayed abnormally, or objects, such
as a wall, may not be detected.
●A sensor is covered in any way.
●When a sensor or the area around a sensor is extremely hot or cold.
●On an extremely bumpy road, on an
incline, on gravel, or on grass.
●When vehicle horns, vehicle detec-
tors, motorcycle engines, air brakes of large vehicles, the clearance sonar of
other vehicles or other devices which
produce ultrasonic waves are near the
vehicle
●A sensor is coated with a sheet of
spray or heavy rain.
●If objects draw too close to the sensor.
●When a pedestrian is wearing clothing that does not reflect ultrasonic waves
(ex. skirts with ga thers or frills).
●When objects that are not perpendicu-
lar to the ground, not perpendicular to
the vehicle traveling direction, une- ven, or waving are in the detection
range.
●Strong wind is blowing
●When driving in inclement weather such as fog, snow or a sandstorm
●When an object that cannot be detected is between the vehicle and a
detected object
●If an object such as a vehicle, motor-
cycle, bicycle or pedestrian cuts in
front of the vehicle or runs out from the side of the vehicle
●If the orientation of a sensor has been changed due to a collision or other
impact
●When equipment that may obstruct a
sensor is installed, such as a towing
eyelet, bumper protector (an addi- tional trim strip, et c.), bicycle carrier,or
snow plow
●If the front of the vehicle is raised or
lowered due to the carried load
●If the vehicle cannot be driven in a
stable manner, such as when the
vehicle has been in an accident or is malfunctioning
●When a tire chains, compact spare tire or an emergency tire puncture repair
kit is used
■Situations in which the system may
operate even if there is no possibil-
ity of a collision
In some situations, such as the follow-
ing, the system may operate even
though there is no possibility of a colli- sion.
505
8
8-2. Steps to take in an emergency
When trouble arises
8-2.Steps to take in an emergency
If your vehicle needs to
be towed
If towing is necessary, we rec-
ommend having your vehicle
towed by any authorized
Toyota retailer or Toyota
authorized repairer, or any reli-
able repairer or commercial
towing service, using a
wheel-lift type truck or flatbed
truck.
Use a safety chain system for
all towing, and abide by all
state/provincial and local laws.
WA R N I N G
Observe the following precautions. Failure to do so may result in death or
serious injury.
■When towing the vehicle
Be sure to transport the vehicle with
the front wheels raised or with all four wheels raised off the ground. If the
vehicle is towed with the front wheels
contacting the ground, the drivetrain and related parts may be damaged.
■While towing
●When towing using cables or
chains, avoid sudden starts, etc.
which place excessive stress on the towing eyelets, cables or chains.
The towing eyelets, cables or
chains may become damaged, bro- ken debris may hit people, and
cause serious damage.
●Do not turn the engine switch off.
There is a possibility that the steer-
ing wheel is locked and cannot be operated.
■Installing towing eyelets to the vehicle
Make sure that towing eyelets are
installed securely. If not securely installed, towing eye-
lets may come loose during towing.
NOTICE
■To prevent damage to the vehicle
when towing using a wheel-lift type truck
●Vehicles without a smart entry &
start system: Do not tow the vehicle from the rear when the engine
switch is off or the key is removed.
The steering lock mechanism is not strong enough to hold the front
wheels straight.
●Vehicles with a smart entry & start
system: 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.