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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
Page 266 of 624
2664-5. Using the driving support systems
●In some situations such as the following, sufficient braking force or steering
force may not be obtained, preventing 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 maintained (brakes or tires are excessively
worn, improper tire inflation pressure, etc.)
• When the vehicle is being driven on a gravel road or other slippery sur-
face
• When the road surface has deep wheel tracks
• When driving on a hill road
• When driving on a road that has inclines to the left or right
■If VSC is disabled
●If VSC is disabled (P. 304), the pre-collision brake assist and pre-collision
braking functions are also disabled.
●The PCS warning light will turn on and “VSC Turned Off Pre-Collision Brake
System Unavailable” will be displayed on the multi-information display.
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2674-5. Using the driving support systems
4
Driving
While driving on a road with clear white (yellow) lane lines, the LTA
system warns the driver if the vehicle may deviate from the current
lane or course
*, and also can slightly operate the steering wheel to
help avoid deviation from the lane or course
*. Also, while the dynamic
radar cruise control with full-speed range is operating, this system will
operate the steering wheel to maintain the vehicle’s lane position.
The LTA system recognizes white
(yellow) lane lines or a course
*
using the front camera. Addition-
ally, it detects preceding vehicles
using the front camera and radar.
*: Boundary between asphalt and the side of the road, such as grass, soil, or
a curb
LTA (Lane Tracing Assist)
Summary of functions
WARNING
■Before using LTA system
●Do not rely solely upon the LTA system. The LTA system does not auto-
matically drive the vehicle or reduce the amount of attention that must be
paid to the area in front of the vehicle. The driver must always assume full
responsibility for driving safely by paying careful attention to the surround-
ing conditions and operating the steering wheel to correct the path of the
vehicle. Also, the driver must take adequate breaks when fatigued, such
as from driving for a long period of time.
●Failure to perform appropriate driving operations and pay careful attention
may lead to an accident, resulting in death or serious injury.
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2684-5. Using the driving support systems
WARNING
■Situations unsuitable for LTA system
In the following situations, use the LTA switch to turn the system off. Failure
to do so may lead to an accident, resulting in death or serious injury.
●Vehicle is driven on a road surface which is slippery due to rainy weather,
fallen snow, freezing, etc.
●Vehicle is driven on a snow-covered road.
●White (yellow) lines are difficult to see due to rain, snow, fog, dust, etc.
●Vehicle is driven in a temporary lane or restricted lane due to construction
work.
●Vehicle is driven in a construction zone.
●A spare tire, tire chains, etc. are equipped.
●When the tires have been excessively worn, or when the tire inflation pres-
sure is low.
●During emergency towing
■Preventing LTA system malfunctions and operations performed by
mistake
●Do not modify the headlights or place stickers, etc. on the surface of the
lights.
●Do not modify the suspension etc. If the suspension etc. needs to be
replaced, contact your Toyota dealer.
●Do not install or place anything on the hood or grille. Also, do not install a
grille guard (bull bars, kangaroo bar, etc.).
●If your windshield needs repairs, contact your Toyota dealer.
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2694-5. Using the driving support systems
4
Driving
WARNING
■Conditions in which functions may not operate properly
In the following situations, the functions may not operate properly and the
vehicle may depart from its lane. Drive safely by always paying careful
attention to your surroundings and operate the steering wheel to correct the
path of the vehicle without relying solely on the functions.
●When the follow-up cruising display is displayed (P. 277) and the pre-
ceding vehicle is swaying. (Your vehicle may sway accordingly and depart
from the lane.)
●When the follow-up cruising display is displayed (P. 277) and the pre-
ceding vehicle departs from its lane. (Your vehicle may follow the preced-
ing vehicle and depart from the lane.)
●When the follow-up cruising display is displayed (P. 277) and the pre-
ceding vehicle is being driven extremely close to the left/right lane line.
(Your vehicle may follow the preceding vehicle and depart from the lane.)
●Vehicle is being driven around a sharp curve.
●When the follow-up cruising display is
displayed (P. 277) and the preceding
vehicle changes lanes. (Your vehicle
may follow the preceding vehicle and
also change lanes.)
●Objects or patterns that could be mis-
taken for white (yellow) lines are pres-
ent on the side of the road (guardrails,
reflective poles, etc.).
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2704-5. Using the driving support systems
WARNING
●There are shadows on the road that run parallel with, or cover, the white
(yellow) lines.
●The vehicle is driven in an area without white (yellow) lines, such as in
front of a tollgate or checkpoint, or at an intersection, etc.
●The white (yellow) lines are cracked, “Botts’ dots”, “Raised pavement
marker” or stones are present.
●The white (yellow) lines cannot be seen or are difficult to see due to sand,
etc.
●The vehicle is driven on a road surface that is wet due to rain, puddles,
etc.
●The traffic lines are yellow (which may be more difficult to recognize than
lines that are white).
●The white (yellow) lines cross over a curb, etc.
●<0037004b0048000300590048004b004c0046004f00480003004c0056000300470055004c00590048005100030052005100030044000300450055004c004a004b005700030056005800550049004400460048000f0003005600580046004b00030044005600
03004600520051004600550048005700480011[
●If the edge of the road is not clear or straight.
●<0037004b0048000300590048004b004c0046004f00480003004c0056000300470055004c005900480051000300520051000300440003005600580055004900440046004800030057004b004400570003004c0056000300450055004c004a004b0057000300
47005800480003005700520003005500480049004f00480046[ted light, etc.
●The vehicle is driven in an area where the brightness changes suddenly,
such as at the entrances and exits of tunnels, etc.
●Vehicle is driven where the road
diverges, merges, etc.
●Repair marks of asphalt, white (yellow)
lines, etc. are present due to road
repair.
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2714-5. Using the driving support systems
4
Driving
WARNING
●Light from the headlights of an oncoming vehicle, the sun, etc. enters the
camera.
●The vehicle is driven on a slope.
●<0037004b0048000300590048004b004c0046004f00480003004c0056000300470055004c00590048005100030052005100030044000300550052004400470003005a004b004c0046004b00030057004c004f005700560003004f0048004900570003005200
5500030055004c004a004b0057000f00030052005500030044[ winding road.
●The vehicle is driven on an unpaved or rough road.
●The traffic lane is excessively narrow or wide.
●The vehicle is extremely tilted due to carrying heavy luggage or having
improper tire pressure.
●<0037004b004800030047004c00560057004400510046004800030057005200030057004b00480003005300550048004600480047004c0051004a000300590048004b004c0046004f00480003004c005600030048005b00570055004800500048004f005c00
030056004b0052005500570011[
●The vehicle is moving up and down a large amount due to road conditions
during driving (poor roads or road seams).
●When driving in a tunnel or at night with the headlights off or when a head-
light is dim due to its lens being dirty or it being misaligned.
●The vehicle is struck by a crosswind.
●The vehicle is affected by wind from a vehicle driven in a nearby lane.
●<0037004b0048000300590048004b004c0046004f00480003004b004400560003004d00580056005700030046004b00440051004a004800470003004f0044005100480056000300520055000300460055005200560056004800470003004400510003004c00
510057004800550056004800460057004c005200510011[
●Tires which differ by structure, manufacturer, brand or tread pattern are
used.
●When tires of a size other than specified are installed.
●Snow tires, etc. are equipped.
●<0037004b0048000300590048004b004c0046004f00480003004c0056000300450048004c0051004a000300470055004c00590048005100030044005700030048005b00570055004800500048004f005c0003004b004c004a004b0003005600530048004800
4700560011[
Page 272 of 624
2724-5. Using the driving support systems
◆Lane departure alert function
When the system determines
that the vehicle might depart
from its lane or course
*, a
warning is displayed on the
multi-information display, and a
warning buzzer will sound to
alert the driver.
When the warning buzzer
sounds, check the area around
your vehicle and carefully oper-
ate the steering wheel to move
the vehicle back to the center of
the lane.
Vehicle with BSM: When the
system determines that the
vehicle might depart from its
lane and that the possibility of a
collision with an overtaking vehi-
cle in the adjacent lane is high,
the lane departure alert will
operate even if the turn signals
are operating.
*: Boundary between asphalt and the side of the road, such as grass, soil,
or a curb
Functions included in LTA system