
2394-5. Using the driving support systems
4
Driving
pre-collision brake assist and 
pre-collision braking functions are 
also disabled.
●The PCS warning light will turn on 
and “VSC Turned OFF Pre-Colli-
sion Brake System Unavailable” 
will be display ed on the 
multi-informat ion display.
LTA (Lane Tracing 
Assist)
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 con-
trol with full-speed range 
( P.249) 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 cam-
era. Additionally, 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 

2414-5. Using the driving support systems
4
Driving
WARNING
●When the follow-up cruising dis-
play is displayed (
P.245) and 
the preceding vehicle changes 
lanes. (Your vehicle may follow 
the preceding vehicle and also 
change lanes.)
●When the follow-up cruising dis-
play is displayed (
P.245) and 
the preceding vehicle is sway-
ing. (Your vehicle may sway 
accordingly and depart from the 
lane.)
●When the follow-up cruising dis-
play is displayed (P.245) and 
the preceding vehicle departs 
from its lane. (Your vehicle may 
follow the preceding vehicle and 
depart from the lane.)
●When the follow-up cruising dis-
play is displayed (
P.245) and 
the preceding vehicle is being 
driven extremely close to the 
left/right lane line. (Your vehicle 
may follow the preceding vehi-
cle and depart from the lane.)
●Vehicle is being driven around a 
sharp curve.
●Objects or patterns that could 
be mistaken for  white (yellow) 
lines are present on the side of 
the road (guardrails, reflective 
poles, etc.).
●Vehicle is driven where the road 
diverges, merges, etc.
●Repair marks of asphalt, white 
(yellow) lines, etc. are present 
due to road repair.
●There are shadows on the road 
that run parallel with, or cover, 
the white (yellow) lines. 

2434-5. Using the driving support systems
4
Driving
■Lane departure alert func-
tion
When the system determines 
that the vehicle might depart 
from its lane or course
*, a warn-
ing 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 operate the steering 
wheel to move the vehicle back to 
the center of the lane.
Vehicle with BSM: When the sys-
tem determines that the vehicle 
might depart from its lane and that 
the possibility of a collision with an 
overtaking vehicle in the adjacent 
lane is high, the lane departure 
alert will operate e ven if the turn 
signals are operating.
*: Boundary between asphalt and  the side of the road, such as 
grass, soil, or a curb
■Steering assist function
When the system determines 
that the vehicle might depart 
from its lane or course
*, the sys-
tem provides assistance as nec-
essary by operating the steering 
wheel in small amounts for a 
short period of time to keep the 
vehicle in its lane.
Vehicle with BSM: When the sys-
tem determines that the vehicle 
might depart from its lane and that 
the possibility of a collision with an 
overtaking vehicle in the adjacent 
lane is high, the steering assist 
function 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 

2444-5. Using the driving support systems
■Vehicle sway warning func-
tion
When the vehicle is swaying 
within a lane, the warning 
buzzer will sound and a mes-
sage will be displayed on the 
multi-information display to alert 
the driver.■Lane centering function
This function is linked with 
dynamic radar cruise control 
with full-speed range and pro-
vides the required assistance by 
operating the steering wheel to 
keep the vehicle in its current 
lane.
When dynamic radar cruise control 
with full-speed range is not operat-
ing, the lane centering function 
does not operate.
In situations where the white (yel-
low) lane lines are d ifficult to see or 
are not visible, such as when in a 
traffic jam, this function will operate 
to help follow a preceding vehicle 
by monitoring the position of the 
preceding vehicle. 

2454-5. Using the driving support systems
4
Driving
Press the LTA switch to turn the 
LTA system on.
The LTA indicator illuminates and a 
message is displayed on the 
multi-information display.
Press the LTA switch again to 
turn the LTA system off.
When the LTA system is turned 
on or off, operation of the LTA 
system continues in the same 
condition the next time the 
engine is started.LTA  i n d i c a t o r
The illumination condition of the 
indicator informs the driver of the 
system operation status.
Illuminated in white: LTA system is 
operating.
Illuminated in green: Steering wheel 
assistance of the steering assist 
function or lane centering function 
is operating.
Flashing in orange: Lane departure 
alert function is operating.
Operation display of steering 
wheel operation support
Displayed when the multi-informa-
tion display is swit
ched to the driv-
ing support system information 
Tu r n i n g   LTA  s y s t e m   o n
Indications on  multi-infor-
mation display 

2464-5. Using the driving support systems
display.
Indicates that steering wheel assis-
tance of the steering assist function 
or lane centering function is operat-
ing.
Both outer sides of the lane are dis-
played: Indicates that steering 
wheel assist of the lane centering 
function is operating.
One outer side of the lane is dis-
played: Indicates that steering 
wheel assist of the steering assist 
function is operating.
Both outer sides of the lane are 
flashing: Alerts the driver that their 
input is necessary to stay in the 
center of the lane (lane centering 
function).
Lane departure alert function 
display
Displayed when the multi-informa-
tion display is switched to the driv-
ing support system information 
display.
Inside of displayed lines is 
white
Indicates that the system is rec-
ognizing white (yellow) lines or a 
course
*. When the vehicle 
departs from its lane, the white 
line displayed on the side the 
vehicle departs from flashes 
orange.
Inside of displayed lines is 
black
Indicates that the system is not 
able to recognize white (yellow) 
lines or a course
* or is temporar-
ily canceled.
*: Boundary between asphalt and  the side of the road, such as 
grass, soil, or a curb
Follow-up cruising display
Displayed when the multi-informa-
tion display is swit ched to the driv-
ing support system information 
display.
Indicates that steering assist of the 
lane centering function is operating 
by monitoring the position of a pre-
ceding vehicle.
When the follow-up cruising display 
is displayed, if t he preceding vehi-
cle moves, your ve hicle may move 
in the same way. Always pay care-
ful attention to your surroundings 
and operate the steering wheel as 
necessary to correct the path of the 
vehicle and ensure safety.
■Operation conditions of each 
function
●Lane departure alert function
This function operates when all of 
the following conditions are met.
• LTA is turned on. 

2474-5. Using the driving support systems
4
Driving
• Vehicle speed is approximately 32 mph (50 km/h) or more.*1
• System recognizes white (yellow) lane lines or a course*2. (When a 
white [yellow] line or course*2 is 
recognized on only one side, the 
system will operat e only for the 
recognized side.)
• Width of traffic lane is approxi- mately 9.8 ft. ( 3 m) or more.
• Turn signal lever  is not operated. 
(Vehicle with BSM : Except when 
another vehicle is in the lane on 
the side where the turn signal was 
operated)
• Vehicle is not being driven around 
a sharp curve.
• No system malfunctions are  detected. ( P.249)
*1: The function opera tes even if the 
vehicle speed is less than 
approximately 32 mph (50 km/h) 
when the lane centering function 
is operating.
*2: Boundary between asphalt and  the side of the road, such as 
grass, soil, or a curb
●Steering assist function
This function oper ates when all of 
the following conditions are met in 
addition to the operation conditions 
for the lane departure alert function.
• Vehicle is not accelerated or  decelerated by a fixed amount or 
more.
• Steering wheel is not operated  with a steering force level suitable 
for changing lanes.
• ABS, VSC, TRAC and PCS are  not operating.
• TRAC or VSC is not turned off.
●Vehicle sway warning function
This function oper ates when all of 
the following cond itions are met.
• Setting for “Sway Warning” in    of the multi-information display is 
set to “ON”. ( P.92, 102)
• Vehicle speed is approximately 32  mph (50 km/h) or more. • Width of traffic lane is approxi-
mately 9.8 ft. (3 m) or more.
• No system malfunctions are 
detected. ( P.249)
●Lane centering function
This function operates when all of 
the following conditions are met.
• LTA is turned on.
• Setting for “Lane Center” in   of  the multi-information display are 
set to “ON”. ( P.92, 102)
• This function recognizes white  (yellow) lane lines or the position 
of a preceding v ehicle (except 
when the preceding vehicle is 
small, such as a motorcycle).
• The dynamic radar cruise control 
with full-speed ran ge is operating 
in vehicle-to-vehicle distance con-
trol mode.
• Width of traffic lane is approxi- mately 10 to 13 ft. (3 to 4 m).
• Turn signal lever is not operated.
• Vehicle is not being driven around 
a sharp curve.
• No system malfunctions are 
detected. ( P.249)
• Vehicle does not accelerate or  decelerate by a fixed amount or 
more.
• Steering wheel is not operated  with a steering force level suitable 
for changing lanes.
• ABS, VSC, TRAC  and PCS are 
not operating.
• TRAC or VSC is not turned off.
• Hands off steering wheel warning  is not displayed. ( P.248)
• The vehicle is being driven in the  center of a lane.
• Steering assist function is not 
operating.
■Temporary cancelation of func-
tions
●When operation conditions are no 
longer met, a function may be 
temporarily canceled. However, 
when the operation conditions are 
met again, operation of the func-
tion is automatically restored. 
( P.246) 

2494-5. Using the driving support systems
4
Driving
vehicle sway warning function is 
operating, a buzzer sounds and a 
warning message urging the driver 
to rest and the symbol shown in the 
illustration are simultaneously dis-
played on the multi-information dis-
play.
Depending on the vehicle and road 
conditions, the warning may not 
operate.
■Warning message
If the follo wing warning message is 
displayed on the multi-information 
display and the LT A indicator illumi-
nates in orange, follow the appropri-
ate troubleshooting 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 tempo rarily canceled 
due to a malfuncti on 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. 
(Customizable features: P.494)
■Meter display
Multi-information display
Set speed
Dynamic radar cruise 
control with full-speed 
range
In vehicle-to-vehicle dis-
tance control mode, the 
vehicle automatically accel-
erates, decelerates and 
stops to match the speed 
changes of the preceding 
vehicle even if the accelera-
tor pedal is not depressed. 
In constant speed control 
mode, the vehicle runs at a 
fixed speed.
Use the dynamic radar 
cruise control with 
full-speed range on free-
ways and highways.
 Vehicle-to-vehicle distance 
control mode ( P.252)
 Constant speed control 
mode ( P.257)
System Components