TOYOTA HIGHLANDER 2023 Owners Manual

4116-3. 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.

4126-3. Do-it-yourself maintenance
1Turn the engine switch off.
2 Open the fuse box cover.
Engine compartment: type A
fuse box (if equipped)
Push the tab in and lift the lid off.
Engine compartment: type B
fuse box
Push the tab in and lift the lid off.
Under the driver’s side instru-
ment panel
Remove the lid.
Make sure to push the claw when
removing/installing the lid.
3Remove the fuse.
Only type A fuse can be removed
using the pullout tool.
4Check if the fuse is blown.
Replace the blown fuse with a new
fuse of an appropriate amperage
rating. The amperage rating can be
found on the fuse box lid.
Type A
Checking and replac-
ing fuses
If any of the electrical com-
ponents do not operate, a
fuse may have blown. If this
happens, check and replace
the fuses as necessary.
Checking and replacing
fuses

4136-3. Do-it-yourself maintenance
6
Maintenance and care
Normal fuse
Blown fuse
Type BNormal fuse
Blown fuse
Type CNormal fuse
Blown fuse
■After a fuse is replaced
●If the lights do n ot turn on even
after the fuse has been replaced,
a bulb may need replacement.
(  P.415)
●If the replaced fuse blows again,
have the vehicle inspected by
your Toyota dealer.
■If there is an overload in a cir-
cuit
The fuses are designed to blow, pro-
tecting the wiring harness from
damage.
■When replacing light bulbs
Toyota recommends that you use
genuine Toyota pr oducts designed
for this vehicle. Because certain
bulbs are connected to circuits
designed to prevent overload,
non-genuine parts or parts not
designed for this vehicle may be
unusable.
WARNING
■To prevent system break-
downs and vehicle fire
Observe the following precau-
tions.
Failure to do so may cause dam-
age to the vehicle, and possibly a
fire or injury.
●Never use a fuse of a higher
amperage rating than that indi-
cated, or use any other object in
place of a fuse.
●Always use a genuine Toyota
fuse or equivalent.
Never replace a fuse with a
wire, even as a temporary fix.
●Do not modify the fuses or fuse
boxes.
NOTICE
■Before replacing fuses
Have the cause of electrical over-
load determined and repaired by
your Toyota dealer as soon as
possible.

4146-3. Do-it-yourself maintenance
Adjustment bolt A
Adjustment bolt B
 Make sure the vehicle has a
full tank of gasoline and the
area around the headlight is
not deformed.
 Park the vehicle on level
ground.
 Make sure the tire inflation
pressure is at the specified
level.
 Have someone sit in the
driver’s seat.
 Bounce the vehicle several
times. 1
Using a Phillips-head screw-
driver, turn bolt A in either
direction.
Remember the turning direction
and the number of turns.
2Turn bolt B the same number
of turns and in the same
direction as step 1.
If the headlight cannot be adjusted
using this procedu re, take the vehi-
cle to your Toyota dealer to adjust
the headlight aim.
Headlight aim
Vertical movement adjust-
ing bolts
Before checking the head-
light aim
Adjusting the headlight
aim

4156-3. Do-it-yourself maintenance
6
Maintenance and care
Check the wattage of the light
bulb to be replaced. (P.481)
 P. 4 9 9
Front (type A)
Front turn signal lights/park- ing lights
Front side marker lights
Front (type B)
Front turn signal lights
Front side marker lights
Front (type C)
Front turn signal lights/park-
ing lights
Front side marker lights
RearRear turn signal lights
Light bulbs
You may replace the follow-
ing bulbs by yourself. The
difficulty level of replace-
ment varies depending on
the bulb. If necessary bulb
replacement seems difficult
to perform, contact your
Toyota dealer.
For more information about
replacing other light bulbs,
contact your Toyota dealer.
Preparing for light bulb
replacement
Turning off the power
back door main switch (if
equipped)
Bulb locations

4166-3. Do-it-yourself maintenance
Back-up lights
License plate lights
■Lights that need to be
replaced by your Toyota
dealer
 Headlight low beams
 Headlight high beams
 Daytime running lights (types
A and C)
 Daytime running lights/park-
ing lights (type B)
 Front fog lights (if equipped)
 Side turn signal lights
 Tail lights/stop lights
 Rear side marker lights
 Tail lights
 High mounted stoplight
 Outer foot lights (if equipped)
■LED lights
The lights other than the following
lights each consist of a number of
LEDs. If any of the LEDs burn out,
take your vehicle to your Toyota
dealer to have the light replaced.
●Front turn signal lights/parking
lights (types A and C)
●Front turn signal lights (type B)
●Front side marker lights
●Rear turn signal lights
●Back-up lights
●License plate lights
■Condensation build-up on the
inside of the lens
Temporary condensation build-up
on the inside of the light lens does
not indicate a malfunction. Contact
your Toyota dealer for more informa- tion in the following situations:
●Large drops of water have built up
on the inside of the lens.
●Water has built up
inside the light.
■When replacing light bulbs
 P.413
■Front turn signal
lights/parking lights (types
A and C) and front turn sig-
nal lights (type B)
1 Turn the bulb base counter-
clockwise and remove it.
2 Remove the light bulb.
3 Install a new light bulb, and
then install the bulb base to
the light unit by inserting it
and turning the bulb base
clockwise.
After installing the bulb base, wig-
gle it lightly to make sure it is
Replacing light bulbs

4176-3. Do-it-yourself maintenance
6
Maintenance and care
securely installed and turn the lights
and turn signal lights on to visually
check that there is no light leaking
from between the bulb base and
light unit.
■Front side marker lights
1 Turn the bulb base counter-
clockwise and remove it.
2 Remove the light bulb.
3 Install a new light bulb, and
then install the bulb base to
the light unit by inserting it
and turning the bulb base
clockwise.
After installing th e bulb base, wig- gle it lightly to make sure it is
securely installed a
nd turn the lights
on to visually check that there is no
light leaking from between the bulb
base and light unit.
■Rear turn signal lights
1 Open the back door and
using a flathead screwdriver,
remove the cover.
To prevent damage to the vehicle,
wrap the tip of th e flathead screw-
driver with tape, etc.
2 Remove the securing 2
screws and light unit.
Remove the light u nit by pulling it
straight back from the rear of the

4186-3. Do-it-yourself maintenance
vehicle.
3Disconnect the wire harness.
4 Turn the bulb base counter-
clockwise and remove it.
5 Remove the light bulb. 6
Install a new light bulb, and
then install the bulb base to
the light unit by inserting it
and turning it clockwise.
After installing the bulb base, wig-
gle it lightly to make sure it is
securely installed and turn on the
turn signal lights to visually check
that there is no light leaking from
between the bulb base and light
unit.
7Install the light unit.
Align the 2 guides and push the
light unit toward the front of the
vehicle to install it.

4196-3. Do-it-yourself maintenance
6
Maintenance and care
8Install the 2 screws.
9 Install the cover.
■Back-up lights
1 Open the back door and
remove the cover.
Using a flathead screwdriver,
remove the cover.
To prevent damage to the vehicle,
wrap the tip of the flathead screw-
driver with tape, etc.
2Turn the bulb base counter-
clockwise and remove it.
3 Remove the light bulb.
4 Install a new light bulb, and
then install the bulb base to
the light unit by inserting it
and turning it clockwise.
After installing the bulb base, wig-
gle it lightly to make sure it is
securely installed and turn on the
back-up lights to visually check that
there is no light leaking from
between the bulb base and light
unit.
5Install the cover.

4206-3. Do-it-yourself maintenance
Align the tabs of the cover with the
grooves and install the cover.
■License plate lights
1 Remove the cover.
Using a flathead screwdriver,
remove the cover.
To prevent damage to the vehicle,
wrap the tip of the flathead screw-
driver with tape, etc.
2Remove the lens.
Lens
Hook
1 Insert a small flathead screw-
driver, etc. into either the
right or left hole of the lens.
2 Push the screwdriver side-
ways in the direction of the
arrow shown in the illustra-
tion, disengage the hook, and
then remove the lens.
To prevent damage to the vehicle,
wrap the tip of th e screwdriver with
tape, etc.