2021 TOYOTA HIGHLANDER HYBRID key

4446-3. Do-it-yourself maintenance
HIGHLANDER HV_U
■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

4456-3. Do-it-yourself maintenance
6
Maintenance and care
HIGHLANDER HV_Uminal 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.

457
7
7
When trouble arises
HIGHLANDER HV_U
When trouble arises
.7-1. Essential informationEmergency flashers .... 458
If your vehicle has to be stopped in an emergency.................................. 458
If the vehicle is trapped in rising water ................ 459
7-2. Steps to take in an emer- gency
If your vehicle needs to be towed......................... 461
If you think something is wrong ........................ 464
If a warning light turns on or a warning buzzer sounds.................................. 466
If a warning message is dis- played........................ 476
If you have a flat tire.... 481
If the hybrid system will not start ........................... 493
If you lose your keys ... 495
If the fuel filler door cannot be opened ................. 495
If the electronic key does not operate properly .. 496
If the 12-volt battery is dis- charged ..................... 498
If your vehicle overheats .................................. 504
If the vehicle becomes stuck .................................. 507

4807-2. Steps to take in an emergency
HIGHLANDER HV_Uare shown on the multi-informa-
tion display, it may indicate a mal-
function. Immediat
ely stop the
vehicle and contact your Toyota
dealer.
• “Braking Power Low Stop in a
Safe Place See Owner's Manual”
• “Oil Pressure Low Stop in a Safe Place See Owner's Manual”
• “Charging System Malfunction Stop in a Safe Place See Owner's
Manual”
• “Stop in a Safe Place See Owner's Manual”
• “Shift to P See Owner's Manual”
●If any of the following messages
are shown on the multi-informa-
tion display, the vehicle may have
run out of fuel. Stop the vehicle in
a safe place and, if the fuel level is
low, refuel the vehicle.
• “Hybrid System Stopped”
• “Engine Stopped”
●If any of the following messages
are shown on the multi-informa-
tion display, it may indicate a mal-
function. Have the vehicle
inspected by you r Toyota dealer
immediately.
• “Hybrid System Malfunction”
• “Check Engine”
• “Hybrid Battery System Malfunc- tion”
• “Accelerator System Malfunction”
• “Smart Key System Malfunction
See Owner's Manual”
●If any of the following messages
are shown on the multi-informa-
tion display, follow the instruc-
tions.
• “Engine Coolant Temp High Stop in a Safe Place See Owner's Man-
ual” ( P.504)
• “Maintenance Required for Trac- tion Battery Cooling Parts See
Owner's Manual” ( P.441)
NOTICE
■If “High Power Consumption
Partial Limit on AC/Heater
Operation” is displayed fre-
quently
There is a possible malfunction
relating to the charging system or
the 12-volt battery may be deteri-
orating. Have the vehicle
inspected by you r Toyota dealer.

4827-2. Steps to take in an emergency
HIGHLANDER HV_U
Jack handle
Wheel nut wrench
Adapter socket
Jack
Spare tire
Wheel lock key (if equipped)
Location of the spare tire, jack and tools
WARNING
■Using the tire jack
Observe the following precau-
tions.
Improper use of the tire jack may
cause the vehicle to suddenly fall
off the jack, leading to death or
serious injury.
●Do not use the tire jack for any
purpose other than replacing
tires or installing and removing
tire chains.
●Only use the tire jack that
comes with this vehicle for
replacing a flat tire.
Do not use it on other vehicles,
and do not use other tire jacks
for replacing tires on this vehi-
cle.

4837-2. Steps to take in an emergency
7
When trouble arises
HIGHLANDER HV_U
When replacing tires on a vehi-
cle with wheel lock nuts, use the
following procedures to remove
and install the wheel lock nuts.
The wheel lock key is stored in
the tray inside the luggage com- partment. Always return the
wheel lock key to its original
position after use, so that it does
not get lost. (
P.482)
■Removal
For ease of removal, the wheel
lock nut should always be the
first one loosened.
1 Place the wheel lock key on
top of the wheel lock nut,
turning until the wheel lock
key and wheel lock nut pat-
terns engage.
2 Place the wheel nut wrench
on the wheel lock key, and
while applying pressure on
the wheel lock key, loosen
the wheel lock nut.
■Installation
For ease of installation, the
wheel lock nut should always be
the last one tightened.
1 By hand, install a wheel lock
nut on each wheel.
2 Place the wheel lock key on
top of the wheel lock nut,
turning until the wheel lock
key and wheel lock nut pat-
terns engage.
3 Place the wheel nut wrench
on the wheel lock key, and
while applying pressure on
the wheel lock key, tighten
the wheel lock nut to the rec-
ommended torque.
WARNING
●Put the jack prope rly in its jack
point.
●Do not put any part of your body
under the vehicle while it is sup-
ported by the jack.
●Do not start the hybrid system
or drive the vehicle while the
vehicle is suppor ted by the jack.
●Do not raise the vehicle while
someone is inside.
●When raising the vehicle, do not
put an object on or under the
jack.
●Do not raise the vehicle to a
height greater than that required
to replace the tire.
●Use a jack stand if it is neces-
sary to get under the vehicle.
●When lowering the vehicle,
make sure that there is no-one
near the vehicle. If there are
people nearby, warn them
vocally before lowering.
Wheel lock nut (if
equipped)

4847-2. Steps to take in an emergency
HIGHLANDER HV_U
1Pull the strap upwards and
open the center deck board.
2 Remove the center deck
board. 3
Remove the jack cover.
4 Remove the jack after remov-
ing the hook.
1 Pull the strap upwards and
open the center deck board.
NOTICE
■When using a wheel lock key
(if equipped)
Do not use an impact wrench.
Using an impact wrench may
cause permanent damage to
wheel lock nut and wheel lock
key. If in doubt about wheel lock
application, contact your Toyota
dealer.
Taking out the jack
Taking out the spare tire

4857-2. Steps to take in an emergency
7
When trouble arises
HIGHLANDER HV_U
2Remove the center deck
board.
3 Remove the cover.
If it is difficult to remove the cover,
you can use your key.
4Attach the adapter socket to
the spare tire clamp bolt.
5 Connect the jack handle
extension to the jack handle.
Check that the extension is locked in place by the button.
6
Connect the jack handle to
the adapter socket. Turn the
jack handle counterclock-
wise.
The tire will be low ered completely
to the ground.
Turn the jack handle slowly to lower
the spare tire. If the handle is
turned quickly, the wire cable may
slip off of the shaf t inside the unit
and the tire may not be lowered.
If the spare tire cannot be lowered:
 P.487
7 Pull out the spare tire and
stand it against the bumper.