
2574-5. Using the driving support systems
4
Driving
HIGHLANDER HV_U(road sign, billboard, etc.)
• When approaching an electric toll  gate barrier, parking area barrier, 
or other barrier that opens and 
closes
• When using an automatic car  wash
• When driving through or under 
objects that may contact your 
vehicle, such as thick grass, tree 
branches, or a banner
• When driving through steam or  smoke
• When driving near an object that  reflects radio waves, such as a 
large truck or guardrail
• When driving near a TV tower,  broadcasting station, electric 
power plant, radar equipped vehi-
cles, etc., or other location where 
strong radio waves or electrical 
noise may be present
• 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.)
• While making a right/left turn,  when an oncoming vehicle or a 
crossing pedestrian has already 
exited the path of your vehicle
• While making a right/left turn,  closely in front of an oncoming 
vehicle or a crossing pedestrian. • While making a 
right/left turn, 
when an oncoming vehicle or a 
crossing pedestrian stops before 
entering the path  of your vehicle
• While making a  right/left turn, 
when an oncoming vehicle turns 
right/left in fron t of your vehicle
• While steering into the direction of  oncoming traffic
■Situations in which the system 
may not operate properly
●In some situations such as the fol-
lowing, an object may not be 
detected by the radar sensor and 
front camera, pre venting the sys-
tem from opera ting 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 
swerving, acceleration or deceler-
ation)
• When your vehicle approaches a  detectable object rapidly
• When a detectable  object is not 
directly in front of your vehicle
• When a detectable  object is near 
a wall, fence, gua rdrail, manhole 
cover, vehicle, steel plate on the 
road, etc.
• When a detectable object is under  a structure 

2614-5. Using the driving support systems
4
Driving
HIGHLANDER HV_U
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. 

3164-5. Using the driving support systems
HIGHLANDER HV_Umaterials that are poor reflectors 
of ultrasonic waves
●Objects which are not perpendicu-
lar to the ground, are not perpen-
dicular to the traveling direction of 
the vehicle, are uneven or are 
waving
●Low objects
●Thin objects such as wires, 
fences, ropes and signposts
●Objects that are e
xtremely close 
to the bumper
●Sharply-angled objects
●Tall objects with upper sections 
projecting outwards in the direc-
tion of your vehicle
■Situation in which the Parking 
Support Brake function (static 
objects) may not operate
When driving with th e shift lever in 
N.
■Intuitive parking assist buzzer
Regardless of whether the intuitive 
parking assist syste m is enabled or 
not ( P.293), if the Parking Support 
Brake function (static objects) is 
enabled ( P.306), the fr ont or rear 
sensors detect an object and brake 
control is perform ed, the intuitive 
parking assist buzze r will sound to 
notify the driver of the approximate 
distance to the object.
■Situations in which the Parking 
Support Brake function (static 
objects) may op erate even if 
there is no possibility of a colli-
sion
In some situations, such as the fol-
lowing, the Parking Support Brake 
function (static objects) may operate 
even though there is no possibility of 
a collision.
●Vehicle surroundings
• When driving on a narrow road • When driving on a gravel road or 
in an area with tall grass
• When driving toward a banner,  flag, low-hanging branch or boom 
barrier (such as those used at rail-
road crossings, toll gates and 
parking lots)
• When driving on a narrow path 
surrounded by a structure, such 
as in a tunnel or on an iron bridge
• When parallel parking
• When there is a rut or hole in the 
surface of the road
• When driving on a metal cover 
(grating), such as those used for 
drainage ditches
• When driving on a steep slope
• If a sensor is hit by a large amount 
of water, such as when driving on 
a flooded road
●Weather
• If a sensor is covered with ice, 
snow, dirt, etc. (when cleared, the 
system will return to normal)
• If heavy rain or water strikes a 
sensor
• When driving in inclement weather  such as fog, snow or a sandstorm
• When strong winds are blowing
●Other ultrasonic wave sources
• When vehicle horns, vehicle 
detectors, motorcycle engines, air 
brakes of large vehicles, the clear-
ance sonar of ot her vehicles or