sensor TOYOTA HIGHLANDER 2023 Repair Manual

3084-5. Using the driving support systems
wheel
■Dynamic Torque Control
AWD system (AWD models)
Automatically controls the drive
system such as to front-wheel
drive or AWD (all wheel drive)
according to various running
conditions including normal driv-
ing, during cornering, on a
uphill, when starting off, during
acceleration, on a slippery roads
due to snow or rain, thus con-
tributing to stable operability and
driving stability.
■Dynamic Torque Vectoring
AWD system (AWD models)
Automatically controls the drive
system such as to front-wheel
drive or AWD (all wheel drive)
according to various running
conditions including normal driv-
ing, during cornering, on a
uphill, when starting off, during
acceleration, on a slippery roads
due to snow or rain, thus con-
tributing to stable operability and
driving stability.
Also, drive torque distribution is
precisely controlled during cor-
nering, contributing to improve-
ments in operability and stability.
■The Secondary Collision
Brake
When the SRS airbag sensor
detects a collision and the sys-
tem operates, the brakes and
brake lights are automatically
controlled to reduce the vehicle speed and help reduce the pos-
sibility of further damage due to
a secondary collision.
■When the TRAC/VSC/Trailer
Sway Control systems are oper-
ating
The slip indicator light will flash
while the TRAC/VSC/Trailer Sway
Control systems are operating.
■Disabling the TRAC system
If the vehicle gets stuck in mud, dirt
or snow, the TRAC system may
reduce power from the engine to the
wheels. Pressing the switch to
turn the system off may make it eas-
ier for you to rock the vehicle in
order to free it.
To turn the TRAC system off, quickly
press and release the switch.
The “Traction Cont rol Turned OFF”
will be shown on the multi-informa-
tion display.
Press the switch again to turn
the system back on.

3104-5. Using the driving support systems
■AWD system operation sounds
and vibrations when switching
between AWD and front wheel
drive (if equipped)
When the vehicle switches from
AWD to front wheel drive and vice
versa, operation sounds and vibra-
tions may be generated, but this is
not a malfunction.
■Reduced effectiveness of the
EPS system
The effectiveness of the EPS sys-
tem is reduced to prevent the sys-
tem from overheating when there is
frequent steering input over an
extended period of time. The steer-
ing wheel may feel heavy as a
result. Should this occur, refrain
from excessive steering input or
stop the vehicle and turn the engine
off. The EPS syst em should return
to normal within 10 minutes.
■Automatic reactivation of
TRAC, Trailer Sway Control and
VSC systems
After turning the TRAC, Trailer
Sway Control and VSC systems off,
the systems will be automatically
re-enabled in the following situa-
tions:
●When the engine switch is turned
OFF
●If only the TRAC system is turned
off, the TRAC will turn on when
vehicle speed increases
If both the TRAC and VSC sys-
tems are turned off, automatic
re-enabling will not occur when
vehicle speed increases.
■Operating conditions of Active
Cornering Assist
The system operates when the fol-
lowing occurs.
●TRAC/VSC can operate
●The driver is at tempting to accel-
erate while turning
●The system detects that the vehi-
cle is drifting to the outer side
●The brake pedal is released
■If a message about AWD is
shown on the multi-information
display (AWD models)
Perform the following actions.
●“AWD System Over-heated
Switching to 2WD Mode.” AWD
system is overheated. Stop the
vehicle in a safe place with the
engine running.
*
If the message disappears after a
while, there is no problem. If the
message remains, have the vehi-
cle inspected by your Toyota
dealer immediately.
●“AWD System Over-heated 2WD
Mode Engaged.” AWD system
has been temporarily released
and switched to front-wheel drive
due to overheating. Stop the vehi-
cle in a safe place with the engine
running.
*
If the message disappears after a
while, AWD system will automati-
cally recover. If the message
remains, have the vehicle
inspected by your Toyota dealer
immediately.
●“AWD system Malfunction 2WD
Mode Engaged Visit Your Dealer.”
A malfunction occurs in the AWD
system. Have the vehicle
inspected by your Toyota dealer
immediately.
*: When stopping the vehicle, do not stop the engine until the display
message has turned off.
■Secondary Collision Brake
operating conditions
The system operates when the SRS
airbag sensor de tects a collision
while the vehicle is in motion.
However, the system does not oper-
ate when the components are dam-
aged.

3716-1. Maintenance and care
6
Maintenance and care
parts.
■Bumpers
Do not scrub with abrasive cleaners.
■Plated portions
If dirt cannot be removed, clean the
parts as follows:
●Use a soft cloth dampened with an
approximately 5% solution of neu-
tral detergent and water to clean
the dirt off.
●Wipe the surface with a dry, soft
cloth to remove any remaining
moisture.
●To remove oily deposits, use alco-
hol wet wipes or a similar product.
WARNING
■When washing the vehicle
Do not apply water to the inside of
the engine compartment. Doing
so may cause the electrical com-
ponents, etc. to catch fire.
■When cleaning the windshield
(vehicles with rain-sensing
windshield wipers)
Set the wiper switch to off.
If the switch is in “AUTO”, the wip-
ers may operate unexpectedly in
the following situations, and may
result in hands being caught or
other serious injuries and cause
damage to the wiper blades.
Off
AUTO
●When the upper part of the
windshield where the raindrop
sensor is located is touched by
hand
●When a wet rag or similar is
held close to the raindrop sen-
sor
●If something bumps against the
windshield
●If you directly touch the raindrop
sensor body or if something
bumps into the ra indrop sensor
■Precautions regarding the
exhaust pipe
Exhaust gasses cause the
exhaust pipe to become quite hot.
When washing the vehicle, be
careful not to touch the pipe until it
has cooled sufficiently, as touch-
ing a hot exhaust pipe can cause
burns.
■Precaution regarding the rear
bumper with Blind Spot Moni-
tor (if equipped)
If the paint of th e rear bumper is
chipped or scratched, the system
may malfunction. If this occurs,
consult your Toyota dealer.
NOTICE
■To prevent paint deteriora-
tion and corrosion on the
body and components (alumi-
num wheels, etc.)
●Wash the vehicle immediately in
the following cases:
• After driving nea r the sea coast
• After driving on salted roads
• If coal tar or tree sap is present on the paint surface
• If dead insects, insect droppings or bird droppings are present on
the paint surface

4367-2. Steps to take in an emergency
■LTA indicator (warning buzzer)
■Stop & Start cancel indicator
■Intuitive parking assist OFF indicator (warning buzzer)
■“RCTA OFF” indicator (warning buzzer)
Warning lightDetails/Actions
(orange)
Indicates a malfunction in the LTA (Lane Tracing Assist)
Follow the instructions di splayed on the multi-infor-
mation display. ( P.249)
Warning lightDetails/Actions
(flashes)
(if equipped)
Indicates a malfunction in the Stop & Start system
(The Stop & Start cancel ind icator will come on when the
system is canceled: P.265)
 Have the vehicle inspected by your Toyota dealer
immediately.
Warning lightDetails/Actions
(flashes)
(if equipped)
Indicates a malfunction in the intuitive parking assist func-
tion
 Have the vehicle inspected by your Toyota dealer
immediately.
Indicates that the system is te mporarily unavailable, possi-
bly due to a sensor being dirty or covered with ice, etc.
 Follow the instructions di splayed on the multi-infor-
mation display. ( P.277)
Warning lightDetails/Actions
(if equipped)
Indicates a malfunction in the RCTA (Rear Cross Traffic
Alert) function
Have the vehicle inspected by your Toyota dealer immedi-
ately.
Indicates that the re ar bumper around the radar sensor is
covered with dirt, etc. ( P.271)
 Follow the instructio ns displayed on the multi-information
display. ( P.284)

4377-2. Steps to take in an emergency
7
When trouble arises
■PKSB OFF indicator (warning buzzer)
■PCS warning light
Warning lightDetails/Actions
(flashes)
(if equipped)
When a buzzer sounds:
Indicates a malfunction in the PKSB (Parking Support
Brake) system
 Have the vehicle inspected by your Toyota dealer
immediately.
When a buzzer does not sound:
Indicates that the system is te mporarily unavailable, possi-
bly due to a sensor being dirty or covered with ice, etc.
 Follow the instructions di splayed on the multi-infor-
mation display. ( P.295, 442)
Warning lightDetails/Actions
(flashes or illu-
minates)
When a buzzer sounds simultaneously:
Indicates a malfunction has occurred in the PCS (Pre-Colli-
sion System).
Have the vehicle inspected by your Toyota dealer
immediately.
When a buzzer does not sound:
The PCS (Pre-Collision System) has become temporarily
unavailable, corrective action may be necessary.
 Follow the instructions di splayed on the multi-infor-
mation display. ( P.226, 442)
If the PCS (Pre-Collision Syst em) or VSC (Vehicle Stability
Control) system is disabled, the PCS warning light will illu-
minate.
 P. 2 3 8

4397-2. Steps to take in an emergency
7
When trouble arises
ger detection sensor may cause
the warning light to flash and the
warning buzzer to sound even if a
passenger is not sitting in the
seat.
●If a cushion is placed on the seat,
the sensor may not detect a pas-
senger, and the warning light may
not operate properly.
■SRS warning light
This warning light system monitors
the airbag sensor assembly, front
impact sensors, side impact sensors
(front), side impact sensors (front
door), side impact sensors (rear),
driver’s seat position sensor,
driver’s seat belt buckle switch, front
passenger occupant classification
system (ECU and sensors), “PASS
AIR BAG ON” indicator light, “PASS
AIR BAG OFF” indicator light, front
passenger’s seat belt buckle switch,
driver’s seat belt pretensioner, front
passenger’s seat be lt pretensioner
and force limiter, airbags, intercon-
necting wiring and power sources.
(  P.34)
■If the malfunction indicator
lamp comes on while driving
First check the following:
●Is the fuel t ank empty?
If it is, fill the f uel tank immediately.
●Is the fuel tank cap loose?
If it is, tighten it securely.
The light will go o ff after several
driving trips.
If the light does not go off even after
several trips, contact your Toyota
dealer as soon as possible.
■Electric power steering system
warning light (warning buzzer)
When the battery charge becomes
insufficient or the voltage temporar-
ily drops, the electric power steering
system warning light may come on
and the warning buzzer may sound.
■When the tire pressure warning
light comes on
Inspect the tires to check if a tire is
punctured.
If a tire is punctured: P. 4 4 6
If none of the tires are punctured:
Turn the engine switch off then turn
it to ON. Check if the tire pressure
warning light com es on or blinks.
If the tire pressure warning light
blinks for 1 minute then stays on
There may be a malfunction in the
tire pressure warning system. Have
the vehicle inspected by your Toyota
dealer immediately.
If the tire pressur e warning light
comes on
1 After the temperature of the tires
has lowered sufficiently, check
the inflation pressure of each tire
and adjust them to the specified
level.
2 If the warning light does not turn
off even after several minutes
have elapsed, check that the
inflation pressure of each tire is
at the specified level and perform
initialization. ( P.399)
If the warning light d oes not turn off
several minutes af ter the initializa-
tion has been performed, have the
vehicle inspected by your Toyota
dealer immediately.
■The tire pressure warning light
may come on due to natural
causes
The tire pressure warning light may
come on due to natural causes such
as natural air leaks and tire inflation
pressure changes caused by tem-
perature. In this ca se, adjusting the
tire inflation pressure will turn off the
warning ligh t (after a few minutes).
■When a tire is replaced with a
spare tire
Vehicles with a co mpact spare tire:
The compact spare tire is not
equipped with a tire pressure warn-
ing valve and tran smitter. If a tire

4447-2. Steps to take in an emergency
■If “Engine Stopped Steering
Power Low” is displayed
This message is displayed if the
engine is stopped while driving.
When steering wheel operations are
heavier than usual, grip the steering
wheel firmly and operate it using
more force th an usual.
■If “Power reduced to lower
engine temp” is displayed
This message may be displayed
when the engine coolant tempera-
ture is high.
At that time, the engine power out-
put is reduced until the temperature
decreases to the specified level. It is
still possible to con tinue driving nor-
mally, meanwhile the acceleration
performance or vehicle speed may
be lowered. After driving for a while
and the engine coolant temperature
is dropped, this m essage will disap-
pear and engine po wer output will
resume once the engine coolant
temperature has decreased to nor-
mal.
If after driving fo r a while the mes-
sage does not disappear or it comes
on and off frequently, contact your
Toyota dealer.
■If “Shift to P when Parked” is
displayed
This message is displayed when the
driver’s door is opened without turn-
ing the engine switch off with the
shift lever in any position other than
P. Change the shift lever to P.
■If “Auto Power OFF to Conserve
Battery” is displayed
Power was cut off due to the auto-
matic power off function. Next time
when starting the engine, increase
the engine speed slightly and main-
tain that level for approximately 5
minutes to recha rge the battery.
■If “Headlight System Malfunc-
tion Visit Your Dealer” is dis-
played
The following systems may be mal- functioning. Hav
e the vehicle
inspected by your Toyota dealer
immediately.
●The LED headlight system (if AFS
[Adaptive Front-lighting System]
equipped)
●AFS (Adaptive Front-lighting Sys-
tem) (if equipped)
●The automatic headlight leveling
system (if equipped)
●Automatic High Beam
■If “Radar Cruise Control
Unavailable See Owner's Man-
ual” is shown
The dynamic radar cruise control
with full-speed range system is sus-
pended temporarily or until the prob-
lem shown in the message is
resolved. (causes and coping meth-
ods: P.226)
■If “Radar Cruise Control
Unavailable” is shown
The dynamic radar cruise control
with full-speed range system cannot
be used temporarily. Use the system
when it becomes available again.
■If a message that indicates the
malfunction of front camera is
displayed
The following systems may be sus-
pended until the problem shown in
the message is resolved. (P.226,
437)
●PCS (Pre-Collision system)
●LTA (Lane Tracing Assist)
●Automatic High Beam
●RSA (Road Sign Assist) (if
equipped)
●Dynamic radar cruise control with
full-speed range
■If a message that indicates the
malfunction of radar sensor is
displayed
The following systems may be sus-
pended until the problem shown in
the message is resolved. (P.226,
437)

4998-2. Customization
8
Vehicle specifications
*: This setting can be changed when the smart door unlocking setting is set
to driver’s door.
■Wireless remote control ( P.113, 115, 119)
■Power back door*1 ( P.119)
Number of consecutive
door lock operations2 timesAs many as
desired——O
Time elapsed before
unlocking all the door
when gripping and hold-
ing the driver’s door
handle
*
2 seconds
Off
——O1.5 seconds
2.5 seconds
FunctionDefault settingCustomized setting
Wireless remote controlOnOff——O
Unlocking operation
Driver’s door unlocked in
one step, all doors
unlocked in two step
All doors unlocked in one stepO—O
Theft deterrent panic
modeOnOff——O
Locking operation when
door openedOnOffO—O
FunctionDefault settingCustomized setting
Power back doorOnOff—O—
Kick sensor*1OnOff—O—
Power back door open-
ing position5
1 to 4
—O—
User setting*2
Buzzer volumeLevel 3Level 1—O—Level 2
FunctionDefault settingCustomized setting

5018-2. Customization
8
Vehicle specifications
■Power windows and moon roof* ( P.162, 165)
*: If equipped
■Moon roof* ( P.165)
*: If equipped
■Automatic light control system ( P.210)
FunctionDefault settingCustomized setting
Mechanical key linked
operationOffOn——O
Wireless remote control
linked operationOffOn (open only)——O
Wireless remote control
linked operation signal
(buzzer)
OnOff——O
FunctionDefault settingCustomized setting
Linked operation of com-
ponents when mechani-
cal key is u sed (open
only)
Slide onlyTilt only——O
Linked operation of com-
ponents when wireless
remote control is used
Slide onlyTilt only——O
FunctionDefault settingCustomized setting
Light sensor sensitivityStandard-2 to 2O—O
Time elapsed before
headlights automatically
turn off after doors are
closed
30 seconds
Off
O—O60 seconds
90 seconds
Windshield wiper linked
headlight illuminationOnOff——O

523What to do if... (Troubleshooting)
Is the engine switch in ON?
If you cannot release the shift lever
by depressing the brake pedal with
the engine switch in ON ( P.202)
 Is the window lock switch
pressed?
The power window except for the
one at the driver’s seat cannot be
operated if the win dow lock switch
is pressed. ( P.164)
 The auto power off function
will be operated if the vehicle
is left in ACC or ON (the
engine is not running) for a
period of time. ( P.200)
 The seat belt reminder light is
flashing
Are the driver and the passengers
wearing the seat belts? ( P.434)
 The parking brake indicator is
on
Is the parking brake released?
( P.205)
Depending on the situation,
other types of warning buzzer
may also sound. ( P.431, 442)
 Did anyone inside the vehicle
open a door during setting the
alarm?
The sensor detects it and the alarm
sounds. ( P. 7 0 )
Do one of the following to stop
the alarms:
 Unlock the doors.
 Turn the engine switch to
ACC or ON, or start the
engine.
 Is the message displayed on
the multi-information display?
Check the message on the
multi-informat ion display. (P.442)
 When a warning light turns on
or a warning message is dis-
played, refer to P.431, 442.
The shift lever cannot be
shifted from P even if you
depress the brake pedal
The windows do not open
or close by operating the
power window switches
The engine switch is
turned off automatically
A warning buzzer sounds
during driving
An alarm is activated and
the horn sounds (vehicles
with an alarm)
A warning buzzer sounds
when leaving the vehicle
A warning light turns on
or a warning message is
displayed