Page 199 of 492
1994-5. Using the driving support systems
4
Driving
◆Pre-collision warning
When the system determines
that the possibility of a frontal
collision is high, a buzzer will
sound and a warning message
will be displayed on the multi-
information display to urge the
driver to take evasive action.
◆Pre-collision brake assist
When the system determines that the possibility of a frontal colli-
sion is high, the system applies gr eater braking force in relation to
how strongly the brake pedal is depressed.
◆Pre-collision braking
When the system determ ines that the possibility of a frontal colli-
sion is high, the system warns th e driver. If the system determines
that the possibility of a frontal collision is extremely high, the brakes
are automatically applied to help avoid the collision or reduce the
collision speed.
Page 200 of 492

2004-5. Using the driving support systems
WARNING
■Limitations of the pre-collision system
● The driver is solely responsible for safe driving. Always drive safely, taking
care to observe your surroundings.
Do not use the pre-collision system instead of normal braking operations
under any circumstances. This system will not prevent collisions or lessen
collision damage or injury in every situation. Do not overly rely on this sys-
tem. Failure to do so may lead to an accident, resulting in death or serious
injury.
● Although this system is designed to help avoid a collision or help reduce
the impact of the collision, its effectiveness may change according to vari-
ous conditions, therefore the system may not always be able to achieve
the same level of performance.
Read the following conditions carefully. Do not overly rely on this system
and always drive carefully.
• Conditions under which the system may operate even if there is no pos-
sibility of a collision: →P. 205
• Conditions under which the system may not operate properly: →P. 207
● Do not attempt to test the operation of the pre-collision system yourself, as
the system may not operate properly, possibly leading to an accident.
■ Pre-collision braking
● When the pre-collision braking function is operating, a large amount of
braking force will be applied.
● If the vehicle is stopped by the operation of the pre-collision braking func-
tion, the pre-collision braking function operation will be canceled after
approximately 2 seconds. Depress the brake pedal as necessary.
● The pre-collision braking function may not operate if certain operations are
performed by the driver. If the accelerator pedal is being depressed
strongly or the steering wheel is being turned, the system may determine
that the driver is taking evasive action and possibly prevent the pre-colli-
sion braking function from operating.
● In some situations, while the pre-collision braking function is operating,
operation of the function may be canceled if the accelerator pedal is
depressed strongly or the steering wheel is turned and the system deter-
mines that the driver is taking evasive action.
● If the brake pedal is being depressed, the system may determine that the
driver is taking evasive action and possibly delay the operation timing of
the pre-collision braking function.
Page 201 of 492

2014-5. Using the driving support systems
4
Driving
WARNING
■When to disable the pre-collision system
In the following situations, disable the system, as it may not operate prop-
erly, possibly leading to an accident resulting in death or serious injury:
● When the vehicle is being towed
● When your vehicle is towing another vehicle
● When transporting the vehicle via truck, boat, train or similar means of
transportation
● When the vehicle is raised on a lift with the engine running and the tires
are allowed to rotate freely
● When inspecting the vehicle using a drum tester such as a chassis dyna-
mometer or speedometer tester, or when using an on vehicle wheel bal-
ancer
● When a strong impact is applied to the front bumper or front grille, due to
an accident or other reasons
● If the vehicle cannot be driven in a stable manner, such as when the vehi-
cle has been in an accident or is malfunctioning
● When the vehicle is driven in a sporty manner or off-road
● When the tires are not properly inflated
● When the tires are very worn
● When tires of a size other than specified are installed
● When tire chains are installed
● When a compact spare tire or an emergency tire puncture repair kit is used
● If equipment (snow plow, etc.) that may obstruct the radar sensor or cam-
era sensor is temporarily installed to the vehicle
Page 202 of 492
2024-5. Using the driving support systems
■Disabling the pre-collision system
Press the PCS switch for 3 sec-
onds or more.
The PCS warning light will turn
on and a message will be dis-
played on the multi-information
display.
To enable the system, press the
PCS switch again.
The system is enabled each
time the engine switch is turned
to IGNITION ON mode.
■
Changing the pre-colli sion warning timing
Press the PCS switch to display
the current warning timing on
the multi-information display.
Each time the PCS switch is
pressed with the warning timing
displayed, the warning timing
will change as follows.
The operation timing setting is
retained when the engine switch
is turned off.
Far
The warning will begin to oper-
ate earlier than with the default
timing.
Middle
This is the default setting.
Near
The warning will begin to operate later than with the default timing.
Changing settings of th e pre-collision system
1
2
3
Page 203 of 492

2034-5. Using the driving support systems
4
Driving
■Operational conditions
Availability of the pedestrian detection function depends on the region i\
n
which the vehicle was sold. (For specific countries/areas: →P. 198)
Read the following for details:
Region A
(The pedestrian detection function is available)
The pre-collision system is enabled and the system determines that the pos-
sibility of a frontal collision with a vehicle or pedestrian is high.
Each function is operational at the following speeds:
● Pre-collision warning:
• Vehicle speed is between approximately 7 and 110 mph (10 and 180 km/h).
(For detecting a pedestrian, vehicle speed is between approximately 7 and
50 mph [10 and 80 km/h].)
• The relative speed between your vehicle and the vehicle or pedestrian ahead is approximately 7 mph (10 km/h) or more.
● Pre-collision brake assist:
• Vehicle speed is between approximat ely 19 and 110 mph (30 and 180 km/h).
(For detecting a pedestrian, vehicle speed is between approximately 19 and
50 mph [30 and 80 km/h].)
• The relative speed between your vehicle and the vehicle or pedestrian
ahead is approximately 19 mph (30 km/h) or more.
● Pre-collision braking:
• Vehicle speed is between approximately 7 and 110 mph (10 and 180 km/h).
(For detecting a pedestrian, vehicle speed is between approximately 7 and
50 mph [10 and 80 km/h].)
• The relative speed between your vehicle and the vehicle or pedestrian ahead is approximately 7 mph (10 km/h) or more.
The system may not operate in the following situations:
● If a battery terminal has been disconnected and reconnected and then the
vehicle has not been driven for a certain amount of time
● If the shift lever is in R
● If VSC is disabled (only the pre-collision warning function will be opera-
tional)
● If the PCS warning light is flashing or illuminated
Page 204 of 492

2044-5. Using the driving support systems
Region B
(The pedestrian detection function is not available)
The pre-collision system is enabled and the system determines that the pos-
sibility of a frontal collision with a vehicle is high.
Each function is operational at the following speeds:
● Pre-collision warning:
• Vehicle speed is between approximately 10 and 110 mph (15 and 180 km/h).
• The relative speed between your vehicle and the vehicle ahead is
approximately 7 mph (10 km/h) or more.
● Pre-collision brake assist:
• Vehicle speed is between approximately 19 and 110 mph (30 and 180 km/h).
• The relative speed between your vehicle and the vehicle ahead is
approximately 19 mph (30 km/h) or more.
● Pre-collision braking:
• Vehicle speed is between approximately 10 and 110 mph (15 and 180 km/h).
• The relative speed between your vehicle and the vehicle ahead is
approximately 7 mph (10 km/h) or more.
The system may not operate in the following situations:
● If a battery terminal has been disconnected and reconnected and then the
vehicle has not been driven for a certain amount of time
● If the shift lever is in R
● If VSC is disabled (only the pre-collision warning function will be opera-
tional)
● If the PCS warning light is flashing or illuminated
Page 210 of 492

2104-5. Using the driving support systems
• Pedestrians who are on a metal object (manhole cover, steel plate, etc.)
on the road
• Pedestrians who are walking fast
• Pedestrians who are changing speed abruptly
• Pedestrians running out from behind a vehicle or a large object
• Pedestrians who are extremely close to the side of the vehicle (outside rear view mirror, etc.)
*2: For countries/areas specified as Region B ( →P. 198), the pedestrian
detection function may not be available.
■ If the PCS warning light flashes a nd a warning message is displayed on
the multi-information display
The pre-collision system may be tempor arily unavailable or there may be a
malfunction in the system.
● In the following situations, the warning light will turn off, the message will
disappear and the system will become operational when normal operating
conditions return:
• When the radar sensor or camera sensor or the area around either sen-
sor is hot, such as in the sun
• When the radar sensor or camera sensor or the area around either sen-
sor is cold, such as in an extremely cold environment
• When the radar sensor or front grill e emblem is dirty or covered with
snow, etc.
• If the camera sensor is obstructed, such as when the hood is open or a sticker is attached to the windshield near the camera sensor
● If the PCS warning light continues to flash or the warning message does not
disappear, the system may be malfunctioning. Have the vehicle inspected
by your Toyota dealer immediately.
■ If VSC is disabled
●If VSC is disabled ( →P. 252), the pre-collision brake assist and pre-collision
braking functions are also disabled.
● The PCS warning light will turn on and “Pre-Collision Brake is Disabled Due
to VSC OFF” will be displayed on the multi-information display.
Page 212 of 492
2124-5. Using the driving support systems
◆Lane departure alert function
When the system determines
that the vehicle might depart
from its lane, a warning is dis-
played on the multi-information
display and the warning buzzer
sounds to alert the driver.
When the warning buzzer
sounds, check the surrounding
road situation and carefully
operate the steering wheel to
move the vehicle back to the
center within the white (yellow)
lines.
◆Steering control function
When the system determines
that the vehicle might depart
from its lane, the system pro-
vides assistance as necessary
by operating the steering wheel
in small amounts for a short
period of time to keep the vehi-
cle in its lane.
If the system detects that the
steering wheel has not been
operated for a fixed amount of
time or the steering wheel is not
being firmly gripped, a warning
is displayed on the multi-infor-
mation display and the warning
buzzer sounds.
Functions included in LDA system