2514-5. Using the driving support systems
4
Driving
●In the following situations, if the situation has changed (or the vehicle has
been driven for some time) and the normal operating conditions are
detected, the message will disappear and the system will become opera-
tional.
If the message does not disappear, contact your Toyota dealer.
• When the temperature around the radar sensor is outside of the opera-
tional range, such as when the vehicle is in the sun or in an extremely
cold environment
• When the front camera cannot detect objects in front of the vehicle, such
as when driving in the dark, snow, or fog, or when bright lights are shining
into the front camera
• Depending on the conditions in the vicinity of the vehicle, the radar may
judge the surrounding environment cannot be properly recognized. In
that case, “Pre-Collision System Unavailable See Owner's Manual” is dis-
played.
2524-5. Using the driving support systems
The system can detect the following (The detectable objects differs
depending on the function.):
●Vehicles
●Bicyclists
●Pedestrians
■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 greater braking force in relation to
how strongly the brake pedal is depressed.
PCS (Pre-Collision System)
The pre-collision system uses a radar sensor and front camera
to detect objects (P. 252) in front of the vehicle. When the sys-
tem determines that the possibility of a frontal collision with an
object is high, a warning operates to urge the driver to take eva-
sive action and the potential brake pressure is increased to help
the driver avoid the collision. If the system determines that the
possibility of a frontal collision with an object is extremely high,
the brakes are automatically applied to help avoid the collision
or help reduce the impact of the collision.
The pre-collision system can be disabled/enabled and the warning
timing can be changed. (P. 2 5 7 )
Detectable objects
System functions
2564-5. Using the driving support systems
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 hybrid system on 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 front
camera is temporarily installed to the vehicle
2634-5. Using the driving support systems
4
Driving
• While steering into the direction of oncoming traffic
■Situations in which the system may not operate properly
●In some situations such as the following, an object may not be detected by
the radar sensor and front camera, preventing the system from operating
properly:
• When a detectable object is approaching your vehicle
• When your vehicle or a detectable object is wobbling
• If a detectable object makes an abrupt maneuver (such as sudden swerv-
ing, acceleration or deceleration)
• When your vehicle approaches a detectable object rapidly
• When a detectable object is near a wall, fence, guardrail, manhole cover,
vehicle, steel plate on the road, etc.
• When a detectable object is under a structure
• When part of a detectable object is hidden by an object, such as large
baggage, an umbrella, or guardrail
• When there are many things which can reflect the radio waves of the
radar in the vicinity (tunnels, truss bridges, gravel roads, snow covered
road that have tracks, etc.)
• When there is an effect on the radio waves to the radar that is installed on
another vehicle
• When multiple detectable objects are close together
• If the sun or other light is shining directly on a detectable object
• When a detectable object is a shade of white and looks extremely bright
• When a detectable object appears to be nearly the same color or bright-
ness as its surroundings
• If a detectable object cuts or suddenly emerges in front of your vehicle
• When the front of your vehicle is hit by water, snow, dust, etc.
• When a very bright light ahead, such as the sun or the headlights of
oncoming traffic, shines directly into the front camera
• When approaching the side or front of a vehicle ahead
• If a vehicle ahead is a motorcycle • While making a right/left turn, when
an oncoming vehicle turns right/left in
front of your vehicle
• When a detectable object is not
directly in front of your vehicle
2654-5. Using the driving support systems
4
Driving
• 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
• When driving in a traffic lane separated by more than one lane where
oncoming vehicles are driving while making a right/left turn
●In addition to the above, in some situations, such as the following, the emer-
gency steering assist may not operate.
• When the white (yellow) lane lines are difficult to see, such as when they
<004400550048000300490044004c00510057000f00030047004c005900480055004a004c0051004a0012005000480055004a004c0051004a000f0003005200550003004400030056004b004400470052005a0003004c005600030046004400560057000300
5800530052005100030057004b00480050[
• When the lane is wider or narrower than normal
• When there is a light and dark pattern on the road surface, such as due to
road repairs
• When the target is too close
• When there is insufficient safe or unobstructed space for the vehicle to be
steered into
• If oncoming vehicle is present
• If VSC function is operating • If the front of the vehicle is raised or
lowered
• When largely out of place with the
opposite facing targeted oncoming
vehicle during a right/left turn
• While making a right/left turn, when a
pedestrian approaches from behind
or side of your vehicle
2814-5. Using the driving support systems
4
Driving
■Warning message
If the following warning message is displayed on the multi-information display
and the LTA indicator illuminates in yellow, follow the appropriate trouble-
shooting procedure. Also, if a different warning message is displayed, follow
the instructions displayed on the screen.
●“LTA Malfunction Visit Your Dealer”
The system may not be operating properly. Have the vehicle inspected by
your Toyota dealer.
●“LTA Unavailable”
The system is temporarily canceled due to a malfunction in a sensor other
than the front camera. Turn the LTA system off, wait for a little while, and then
turn the LTA system back on.
●“LTA Unavailable at Current Speed”
The function cannot be used as the vehicle speed exceeds the LTA operation
range. Drive slower.
■Customization
Function settings can be changed. (P. 109, 126)
2864-5. Using the driving support systems
■Conditions in which the function may not operate or detect correctly
In the following situations, RSA does not operate normally and may not rec-
ognize signs, display the incorrect sign, etc. However, this does not indicate a
malfunction.
●The front camera is misaligned due to a strong impact being applied to the
sensor, etc.
●Dirt, snow, stickers, etc. are on the windshield near the front camera.
●In inclement weather such as heavy rain, fog, snow or sand storms
●Light from an oncoming vehicle, the sun, etc. enters the front camera.
●The sign is dirty, faded, tilted or bent.
●The contrast of electronic sign is low.
●<0024004f004f0003005200550003005300440055005700030052004900030057004b004800030056004c004a00510003004c00560003004b004c004700470048005100030045005c00030057004b00480003004f0048004400590048005600030052004900
03004400030057005500480048000f00030044000300530052[le, etc.
●The sign is only visible to the front camera for a short amount of time.
●The driving scene (turning, lane change, etc.) is judged incorrectly.
●If a sign not appropriate for the currently traveled lane, but the sign exists
directly after a freeway branches, or in an adjacent lane just before merging.
●<00360057004c0046004e0048005500560003004400550048000300440057005700440046004b0048004700030057005200030057004b00480003005500480044005500030052004900030057004b00480003005300550048004600480047004c0051004a00
0300590048004b004c0046004f00480011[
●A sign resembling a system compatible sign is recognized.
●Side road speed signs may be detected and displayed (if positioned in sight
of the front camera) while the vehicle is traveling on the main road.
●Roundabout exit road speed signs may be detected and displayed (if posi-
<0057004c00520051004800470003004c005100030056004c004a004b005700030052004900030057004b00480003004900550052005100570003004600440050004800550044000c0003005a004b004c004f0048000300570055004400590048004f004c00
51004a00030052005100030044000300550052005800510047[about.
●The front of the vehicle is raised or lowered due to the carried load
●The surrounding brightness is not sufficient or changes suddenly.
●When a sign intended for trucks, etc. is recognized.
●The navigation system map data is outdated.
●The navigation system is not operating.
●The speed information displayed on the meter and on the navigation system
may be different due to the navigation system using map data.
■Speed limit sign display
If the power switch was last turned off while a speed limit sign was displayed
on the multi-information display, the same sign displays again when the
power switch is turned to ON.
■If “Road Sign Assist System Malfunction” is shown
The system may be malfunctioning. Have the vehicle inspected by your Toy-
ota dealer.
■Customization
Some functions can be customized. (P. 109, 126)
2884-5. Using the driving support systems
WARNING
■Before using dynamic radar cruise control with full-speed range
●Driving safely is the sole responsibility of the driver. Do not rely solely on
the system, and drive safely by always paying careful attention to your sur-
roundings.
●The dynamic radar cruise control with full-speed range provides driving
assistance to reduce the driver's burden. However, there are limitations to
the assistance provided.
Read the following conditions carefully. Do not overly rely on this system
and always drive carefully.
• When the sensor may not be correctly detecting the vehicle ahead:
P. 301
• Conditions under which the vehicle-to-vehicle distance control mode
may not function correctly: P. 302
●Set the speed appropriately depending on the speed limit, traffic flow, road
conditions, weather conditions, etc. The driver is responsible for checking
the set speed.
●Even when the system is functioning normally, the condition of the preced-
ing vehicle as detected by the system may differ from the condition
observed by the driver. Therefore, the driver must always remain alert,
assess the danger of each situation and drive safely. Relying solely on this
system or assuming the system ensures safety while driving can lead to
an accident, resulting in death or serious injury.
●Switch the dynamic radar cruise control with full-speed range setting to off,
using the cruise control main switch when not in use.