2022 TOYOTA HIGHLANDER key battery

2024-2. Driving procedures
4-2.Driving procedures
1Check that the parking brake
is set.
2 Check that the shift lever is in
P.
3 Firmly depress the brake
pedal.
and a message will be dis-
played on the multi-information dis-
play.
If it is not displayed, the engine
cannot be started.
4 Press the engine switch
shortly and firmly.
When operating the engine switch,
one short, firm press is enough. It is
not necessary to press and hold the
switch.
The engine will crank until it starts
or for up to 30 seco nds, whichever
is less.
Continue depressing the brake
pedal until the engine is completely
started.
The engine can be started from any engine switch mode.
■If the engine does not start
●The engine immobilizer system
may not have been deactivated.
(
 P. 7 1 )
Contact your Toyota dealer.
●If a message related to start-up is
shown on the multi-information
display, read the message and fol-
low the instructions.
■If the battery is discharged
The engine cannot be started using
the smart key system. Refer to
P.490to restart the engine.
■Electronic key battery depletion
 P. 1 1 4
■Conditions affecting operation
 P.135
■Note for the entry function
 P.135
■Electronic key battery
 P.434
■Operation of the engine switch
●If the switch is not pressed shortly
and firmly, the engine switch
mode may not change or the
engine may not start.
●If attempting to res tart the engine
immediately after turning the
engine switch off, the engine may
not start in some cases. After turn-
ing the engine switch off, please
wait a few seconds before restart-
ing the engine.
Engine (ignition)
switch
Performing the following
operations when carrying
the electronic key on your
person starts the engine or
changes engine switch
modes.
Starting the engine

2174-3. Operating the lights and wipers
4
Driving
■Headlight control sensor
The sensor may not function prop-
erly if an object is placed on the sen-
sor, or anything that blocks the
sensor is affixed to the windshield.
Doing so interfere s with the sensor
detecting the level of ambient light
and may cause the automatic head-
light system to malfunction.
■Automatic light off system
●When the headlights are on: The
headlights and tail lights turn off
30 seconds after a door is opened
and closed if the engine switch is
turned to ACC or OFF. (The lights
turn off immediately if on the
key is pressed afte r all the doors
are closed.)
●When only the tail lights are on:
The tail lights tu rn off automati-
cally if the engine switch is turned
to ACC or OFF an d the driver’s
door is opened.
Except for Canada: To turn the lights
on again, turn the engine switch to
ON, or turn the light switch off once
and then back to or .
For Canada: To tu rn the lights on
again, turn the engine switch to ON,
or turn the light s witch to once
and then back to or .
■Automatic headlight leveling
system (if equipped)
The level of the headlights is auto-
matically adjusted according to the
number of passengers and the load-
ing condition of the vehicle to
ensure that the headlights do not interfere with o
ther road users.
■Light reminder buzzer
A buzzer sounds when the engine
switch is turned off or turned to ACC
and the driver’s door is opened
while the lights are turned on.
■Welcome lighting
The parking lights and tail lights
automatically turn on at night when
the doors are un locked using the
entry function or wireless remote
control if the light switch is in the
position.
■Windshield wiper linked head-
light illumination
When driving during daytime with
the headlight switch turned to , if
the windshield wipers are used, the
headlights will turn o n automatically
after several se conds to help
enhance the visibility of your vehi-
cle.
■Battery-saving function
In order to prevent the battery of the
vehicle from discharging, if the
headlights and/or tail lights are on
when the engine switch is turned off
the battery saving function will oper-
ate and automatically turn off all the
lights after approximately 20 min-
utes. When the engine switch is
turned to ON, the battery-saving
function will be disabled.
When any of the following are per-
formed, the battery-saving function
is canceled once and then reacti-
vated. All the lights will turn off auto-
matically 20 minutes after the
battery-saving function has been
reactivated:
●When the headlight switch is oper-
ated
●When a door is opened or closed
■Customization
Some functions can be customized.
(  P.521)

393
6
6
Maintenance and care
Maintenance and care
.6-1. Maintenance and careCleaning and protecting the vehicle exterior .......... 394
Cleaning and protecting the vehicle interior ........... 397
6-2. Maintenance Maintenance requirements.................................. 400
General maintenance.. 402
Emission inspection and maintenance (I/M) pro-
grams ........................ 404
6-3. Do-it-yourself mainte- nance
Do-it-yourself service pre- cautions ..................... 406
Hood ........................... 408
Positioning a floor jack .................................. 409
Engine compartment ... 410
Tires ............................ 417
Tire inflation pressure.. 429
Wheels ......... ...............431
Air conditioning filter .... 432
Electronic key battery.. 434
Checking and replacing fuses.......................... 436
Headlight aim .............. 438
Light bulbs................... 439

4156-3. Do-it-yourself maintenance
6
Maintenance and care
Terminals
Hold-down clamp
■Before recharging
When recharging, t he battery pro-
duces hydrogen ga s which is flam-
mable and explosive. Therefore,
observe the following precautions
before recharging:
●If recharging wi th the battery
installed on the vehicle, be sure to
disconnect the ground cable.
●Make sure the power switch on
the charger is off when connecting
and disconnecting the charger
cables to the battery.
■After recharging/reconnecting
the battery
The engine may not start. Follow the
procedure below to initialize the sys-
tem.
1 Shift the shift lever to P.
2 Open and close any of the doors.
3 Restart the engine.
●Unlocking the doors using the
smart key system may not be pos-
sible immediately after reconnect-
ing the battery. If this happens,
use the wireless remote control or
the mechanical key to lock/unlock
the doors.
●Start the engine with the engine
switch in ACC. The engine may
not start with the engine switch
turned off. However, the engine
will operate normally from the sec-
ond attempt.
●The engine switch mode is
recorded by the vehicle. If the bat-
tery is disconnected and recon-
nected, the vehicle will return the
engine switch mode to the status it
was in before the battery was dis-
connected. Make sure to turn off
the engine before disconnecting
the battery. Take extra care when
connecting the battery if the
engine switch mode prior to the
battery being disconnected is
unknown.
If the system will not start even after
multiple attempts, contact your Toy-
ota dealer.
WARNING
■Chemicals in the battery
Batteries contain poisonous and
corrosive sulfur ic acid and may
produce hydrogen gas which is
flammable and explosive. To
reduce the risk of death or serious
injury, take the following precau-
tions while working on or near the
battery:
●Do not cause sparks by touch-
ing the battery terminals with
tools.
●Do not smoke or light a match
near the battery.
●Avoid contact with eyes, skin
and clothes.
●Never inhale or swallow electro-
lyte.
●Wear protective safety glasses
when working near the battery.
●Keep children away from the
battery.

4346-3. Do-it-yourself maintenance
■If the electronic key battery is
depleted
The following symptoms may occur:
●The smart key system and wire-
less remote contr ol will not func-
tion properly.
●The operational range will be
reduced.
 Flathead screwdriver
 Small flathead screwdriver
 Lithium battery CR2032
■Use a CR2032 lithium battery
●Batteries can be purchased at
your Toyota dealer, local electrical
appliance shops or camera stores.
●Replace only with the same or
equivalent type recommended by
the manufacturer.
●Dispose of used ba tteries accord-
ing to the local laws.
1 Release the lock and remove
the mechanical key.
2 Remove the key cover.
To prevent damage to the key,
cover the tip of the flathead screw-
driver with a rag.
3Remove the depleted battery.
When removing the cover, the elec-
tronic key module may stick to the
cover and the batt ery may not be
visible. In this case, remove the
electronic key module in order to
remove the battery.
When removing the battery, use a
screwdriver of an appropriate size.
Insert a new battery with the “+” ter-
Electronic key batter y
Replace the battery with a
new one if it is depleted.
You will need the follow-
ing items:
Replacing the battery

4356-3. Do-it-yourself maintenance
6
Maintenance and care
minal facing up.
WARNING
■Battery precautions
Observe the following precau-
tions. Failure to do so may result
in death or serious injury.
●Do not swallow the battery.
Doing so may cause chemical
burns.
●A coin battery o r button battery
is used in the electronic key. If a
battery is swallowed, it may
cause severe chemical burns in
as little as 2 hours and may
result in death or serious injury.
●Keep away new and removed
batteries from children.
●If the cover cannot be firmly
closed, stop using the electronic
key and stow the key in the
place where children cannot
reach, and then contact your
Toyota dealer.
●If you accidentally swallow a
battery or put a b attery into a
part of your body, get emer-
gency medical attention imme-
diately.
■To prevent battery explosion
or leakage of flammable liq-
uid or gas
●Replace the battery with a new
battery of the same type. If a
wrong type of battery is used, it
may explode.
●Do not expose batteries to
extremely low pr essure due to
high altitude or extremely high
temperatures.
●Do not burn, bre ak or cut a bat-
tery.
NOTICE
■For normal operation after
replacing the battery
Observe the following precautions
to prevent accidents:
●Always work with dry hands.
Moisture may cause the battery
to rust.
●Do not touch or move any other
component inside the remote
control.
●Do not bend either of the battery
terminals.

447
7
7
When trouble arises
When trouble arises
.7-1. Essential informationEmergency flashers .... 448
If your vehicle has to be stopped in an emergency.................................. 448
If the vehicle is submerged or water on the road is ris-
ing ............................. 449
7-2. Steps to take in an emer- gency
If your vehicle needs to be towed......................... 451
If you think something is wrong ........................ 454
Fuel pump shut off system .................................. 455
If a warning light turns on or a warning buzzer sounds.................................. 456
If a warning message is dis- played........................ 467
If you have a flat tire.... 471
If the engine will not start .................................. 485
If you lose your keys ... 486
If the fuel filler door cannot be opened ................. 487
If the electronic key does not operate properly .. 488
If the vehicle battery is dis- charged ..................... 490
If your vehicle overheats .................................. 494If the vehicle becomes stuck
.................................. 496

4847-2. Steps to take in an emergency
One of the following may be the
cause of the problem:
There may not be sufficient
fuel in the vehicle’s tank.
Refuel the vehicle.
 The engine may be flooded.
Try to restart the engine again
following correct starting pro-
cedures. ( P.202)
 There may be a malfunction
in the engine immobilizer sys-
tem. ( P. 7 1 )
One of the following may be the
cause of the problem:
 The battery may be dis-
charged. ( P.490) 
The battery terminal connec-
tions may be loose or cor-
roded. ( P.414)
The engine starting system may
be malfunctioning due to an
electrical problem such as elec-
tronic key battery depletion or a
blown fuse. However, an interim
measure is available to start the
engine. ( P.485)
One of the following may be the
cause of the problem:
 One or both of the battery ter-
minals may be disconnected.
( P.414)
 The battery may be dis-
charged. ( P.490)
Contact your Toyota dealer if the
problem cannot be repaired, or if
repair procedures are unknown.
When the engine does not start,
the following steps can be used
as an interim measure to start
the engine if the engine switch is
If the engine will not
start
If the engine will not start
even though correct starting
procedures are being fol-
lowed ( P.202), consider
each of the following points:
The engine wil l not start
even though the starter
motor operates normally.
The starter motor turns
over slowly, the interior
lights and headlights are
dim, or the horn does not
sound or sounds at a low
volume.
The starter motor does
not turn over
The starter motor does
not turn over, the interior
lights and headlights do
not turn on, or the horn
does not sound.
Starting the engine in an
emergency