
2434-5. Using the driving support systems
4
Driving
4-5.Using the driving support systems
■PCS (Pre-Collision System)
 P.249
■LTA (Lane Tracing Assist)
 P.260
■AHB (Automatic High 
Beam)
 P.232
■RSA (Road Sign Assist)*
P.283
*: If equipped
■Dynamic radar cruise con-
trol with full-speed range
 P.271 Two types of sensors, located 
behind the front grille and wind-
shield, detect information neces-
sary to operate the drive assist 
systems.
Radar sensor
Front camera
Toyota Safety Sense 
2.5 +
The Toyota Safety Sense 2.5 
+ consists of the following 
drive assist systems and 
contributes to a safe and 
comfortable driving experi-
ence:
Driving assist system
WARNING
■Toyota Safety Sense 2.5 +
The Toyota Safety Sense 2.5 + is 
designed to operate under the 
assumption that the driver will 
drive safely, and is designed to 
help reduce the impact to the 
occupants and the  vehicle in the 
case of a collision or assist the 
driver in normal driving condi-
tions.
As there is a limit to the degree of 
recognition accuracy and control 
performance that this system can 
provide, do not overly rely on this 
system. The driver is always 
responsible for paying attention to 
the vehicle’s su rroundings and 
driving safely.
Sensors 

2504-5. Using the driving support systems
sion is high and that there is suf-
ficient space for the vehicle to 
be steered into within its lane, 
and the driver has begun eva-
sive maneuver or steering, 
emergency steering assist will 
assist the steering movements 
to help enhance the vehicle sta-
bility and for lane departure pre-
vention. During operation, the 
indicator will illuminate in green.
■Intersection right/left turn 
assistance
If the system determines that 
there is a high possibility of a 
collision in the following situa-
tions, it will assist with Pre-colli-
sion warning and, if necessary 
Pre-collision braking.
Depending on the configuration 
of the intersection, it may not be 
possible to support.
 When you turn right/left at an 
intersection and cross the 
path of an oncoming vehicle 
When you turn right/left, 
pedestrian is detected in the 
forward direction and esti-
mated to enter your vehicle’s 
path (bicyclists are not 
detected.)
WARNING
■Limitations of the pre-colli-
sion system
●The driver is solely responsible 
for safe driving. Always drive 
safely, taking care to observe 
your surroundings.
Do not use the pre-collision sys-
tem instead of normal braking 
operations under any circum-
stances. This system will not 
prevent collisions or lessen col-
lision damage or injury in every 
situation. Do not overly rely on 
this system. Failure to do so 
may lead to an accident, result-
ing in death or serious injury. 

2614-5. Using the driving support systems
4
Driving
WARNING
■Before using LTA system
●Do not rely solely upon the LTA 
system. The LTA system does 
not automatically drive the vehi-
cle 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 atten-
tion to the surrounding condi-
tions 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 care-
ful attention may lead to an 
accident, resulting in death or 
serious injury.
■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 sur-
face which is slippery due to 
rainy weather, fallen snow, 
freezing, etc.
●Vehicle is driven on a snow-cov-
ered 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 construc-
tion zone.
●A spare tire, tire chains, etc. are 
equipped.
●When the tires have been 
excessively worn, or when the 
tire inflation p ressure is low.
●When your vehicle is towing a 
trailer or during emergency tow-
ing.
■Preventing LTA system mal-
functions and operations per-
formed by mistake
●Do not modify the headlights or 
place stickers, etc. on the sur-
face 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 gr ille guard (bull 
bars, kangaroo bar, etc.).
●If your windshield needs 
repairs, contact your Toyota 
dealer.
■Conditions in which functions 
may not operate properly
In the following  situations, the 
functions may not operate prop-
erly 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. 

2714-5. Using the driving support systems
4
Driving
■Meter displayMulti-information display
Set speed Indicators
■Operation switches
Vehicle-to-vehicle distance 
switch
“+RES” switch
Cruise control main switch
Cancel switch
“-SET” switch
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.274)
 Constant speed control 
mode ( P.279)
System Components
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 pay-
ing careful attent ion to your sur-
roundings.
●The dynamic radar cruise con-
trol with full-speed range pro-
vides driving assistance to 
reduce the driver’s burden. 
However, there are limitations to 
the assistance provided.
Read the followin g 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. 2 8 1 

2724-5. Using the driving support systems
WARNING
• Conditions under which the vehicle-to-vehicle distance con-
trol mode may not function cor-
rectly: 
P. 2 8 2
●Set the speed appropriately 
depending on the speed limit, 
traffic flow, road conditions, 
weather conditions, etc. The 
driver is respon sible for check-
ing the set speed.
●Even when the system is func-
tioning normally, the condition of 
the preceding vehicle as 
detected by the system may dif-
fer from the condition observed 
by the driver. Therefore, the 
driver must always remain alert, 
assess the danger of each situ-
ation and drive safely. Relying 
solely on this  system or assum-
ing 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 swi tch when not in 
use.
■Cautions regarding the driv-
ing assist systems
Observe the following precau-
tions, as there are limitations to 
the assistance provided by the 
system. Failure  to do so may 
cause an accident resulting in 
death or serious injury.
●Assisting the driver to measure 
following distance
The dynamic radar cruise control 
with full-speed range is only 
intended to help the driver in 
determining the following distance 
between the driver’s own vehicle 
and a designated vehicle traveling 
ahead. It is not a mechanism that 
allows careless or inattentive driv-
ing, and it is not a system that can 
assist the driver in low-visibility 
conditions.
It is still necessa ry for driver to 
pay close attenti on to the vehi-
cle’s surroundings.
●Assisting the driver to judge 
proper following distance
The dynamic radar cruise control 
with full-speed range determines 
whether the following distance 
between the driver’s own vehicle 
and a designated vehicle traveling 
ahead is within a set range. It is 
not capable of making any other 
type of judgement. Therefore, it is 
absolutely necessary for the 
driver to remain vigilant and to 
determine whether or not there is 
a possibility of danger in any 
given situation.
●Assisting the driver to operate 
the vehicle
The dynamic radar cruise control 
with full-speed range does not 
include functions which will pre-
vent or avoid collisions with vehi-
cles ahead of your vehicle. 
Therefore, if there is ever any 
possibility of danger, the driver 
must take immediate and direct 
control of the vehicle and act 
appropriately in order to ensure 
the safety of all involved. 

2744-5. Using the driving support systems
This mode employs a radar to detect the presence of vehicles up to 
approximately 328 ft. (100 m) ahead, determines the current vehi-
cle-to-vehicle following distance, and operates to maintain a s uitable 
following distance from the vehicle ahead. The desired vehi-
cle-to-vehicle distance can also be set by operating the vehi-
cle-to-vehicle distance switch.
When driving on downhill slopes, t he vehicle-to-vehicle distance may 
become shorter.
Example of constant speed cruising
When there are no vehicles ahead
The vehicle travels at the  speed set by the driver.
Example of deceleration crui sing and follow-up cruising
When a preceding vehicle driving slower than the set speed 
appears
When a vehicle is detected runni ng ahead of you, the system automatically 
decelerates your vehicle. When a greater reduction in vehicle s peed is nec-
essary, the system applies the  brakes (the stop lights will come on at this 
time). The system will respond to  changes in the speed of the vehicle 
ahead in order to maintain the vehicle-to-vehicle distance set  by the driver. 
Approach warning warns you when  the system cannot decelerate suffi-
ciently to prevent your vehicle  from closing in on the vehicle  ahead.
When the vehicle ahead of you st ops, your vehicle will also stop (vehicle is 
stopped by system control). Afte r the vehicle ahead starts off, pressing the 
“+RES” switch or depressing the  accelerator pedal (start-off operation) will 
resume follow-up cruising. If the start-off operation is not pe rformed, system 
control continues to keep your vehicle stopped.
Driving in vehicle-to-vehicle distance control mode 

2774-5. Using the driving support systems
4
Driving
2Press the “-SET” switch
Pressing the switch changes the 
vehicle-to-vehicle distance as 
follows:
1 Long
2 Medium
3 Short
If a vehicle is running ahead of you, 
the preceding vehicle mark   will 
also be displayed.
Select a distance from the table 
below. Note that the distances 
shown correspond to a vehicle 
speed of 50 mph (80 km/h). 
Vehicle-to-vehicle distance 
increases/decreases in accor-
dance with vehicle speed. When 
the vehicle is stopped by system 
control, the vehicle stops at a  certain vehicle-to-vehicle dis-
tance depending on the situa-
tion.
After the vehicle ahead of you 
starts off, press the “+RES” 
switch.
Your vehicle will also resume 
follow-up cruising if the acceler-
ator pedal is depressed after the 
vehicle ahead of you starts off.
Changing the vehi-
cle-to-vehicle distance 
(vehicle-to-vehicle dis-
tance control mode)
Vehicle-to-vehicle dis-
tance settings (vehi-
cle-to-vehicle distance 
control mode)
Distance 
optionsVehicle-to-vehicle dis- tance
LongApproximately 160 ft. (50 m)
MediumApproximately 130 ft. (40 m)
ShortApproximately 100 ft. (30 m)
Resuming follow-up 
cruising when the vehicle 
has been stopped by sys-
tem control (vehi-
cle-to-vehicle distance 
control mode) 

2814-5. Using the driving support systems
4
Driving
●The parking brake is operated.
●The vehicle is stopped by system 
control on a steep incline.
●The following are detected when 
the vehicle has been stopped by 
system control:
• The driver is not wearing a seat 
belt.
• The driver’s door is opened.
• The vehicle has been stopped for  about 3 minutes
If vehicle-to-vehicle distance control 
mode is automatically canceled for 
any reasons other than the above, 
there may be a malfunction in the 
system. Contact your Toyota dealer.
■Automatic cancelation of con-
stant speed control mode
Constant speed control mode is 
automatically cance led in the follow-
ing situations:
●Actual vehicle speed is more than 
approximately 10  mph (16 km/h) 
below the set vehicle speed.
●Actual vehicle speed falls below 
approximately 20  mph (30 km/h).
●VSC is activated.
●TRAC is activated for a period of 
time.
●When the VSC or TRAC system is 
turned off.
●When the brake control or output 
restriction control of a driving sup-
port system operates.
(For example: Pre-Collision Sys-
tem, Drive-Start Control)
●Pre-collision braking is activated.
●The parking brake is operated.
If constant speed control mode is 
automatically canceled for any rea-
sons other than the above, there 
may be a malfunction in the system. 
Contact your Toyota dealer.
■Situations in which the curve 
speed reduction function may 
not operate
In situations such as the following,  the curve speed reduction function 
may not operate:
●When the vehicle is being driven 
around a gentle curve
●When the accele
rator pedal is 
being depressed
●When the vehicle is being driven 
around an extremely short curve
■Brake operation
A brake operation sound may be 
heard and the brake pedal response 
may change, but these are not mal-
functions.
■Warning messages and buzzers 
for dynamic radar cruise con-
trol with full-speed range
Warning messages and buzzers are 
used to indicate a system malfunc-
tion or to inform the driver of the 
need for caution while driving. If a 
warning message is shown on the 
multi-information  display, read the 
message and follow the instructions. 
(  P.247, 474)
■When the sensor may not be 
correctly detecting the vehicle 
ahead
In the case of the following and 
depending on the conditions, oper-
ate the brake pedal when decelera-
tion of the system is insufficient or 
operate the accelerator pedal when 
acceleration is required.
As the sensor may  not be able to 
correctly detect th ese types of vehi-
cles, the approach warning 
(  P.278) 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.)