2023 TOYOTA HIGHLANDER HYBRID Owners Manual

4256-3. Do-it-yourself maintenance
6
Maintenance and care
1Turn the power 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.
Right side luggage compart-
ment
Folding down the third seats.
(  P.152)
Disengage the claw and open the
cover.
3 Remove the fuse.
Only type A fuse can be removed
using the pullout tool.
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

4266-3. Do-it-yourself maintenance
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.
Ty p e A
Normal fuse
Blown fuse
Type B
Normal fuse
Blown fuse
Type C Normal fuse
Blown fuse
■After a fuse is replaced
●If the lights do not turn on even
after the fuse has been replaced,
a bulb may need replacement.
(
 P.428)
●If the replaced fuse blows again,
have the vehicle inspected by
your Toyota dealer.
■If there is an ove rload 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.

4276-3. Do-it-yourself maintenance
6
Maintenance and care
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.
WARNING
■Fuse box near the power con-
trol unit
Never check or replace the fuses
as there are high voltage parts
and wiring near the fuse box.
Doing so may cause electric
shock, resulting in death or seri-
ous injury.
NOTICE
■Before replacing fuses
Have the cause of electrical over-
load determined and repaired by
your Toyota dealer as soon as
possible.
Headlight aim
Vertical movement adjust-
ing bolts
Before checking the head-
light aim

4286-3. Do-it-yourself maintenance
1Using 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 procedure, take the vehi-
cle to your Toyota dealer to adjust
the headlight aim.
Check the wattage of the light
bulb to be replaced. ( P.496)
 P.516
Front (type A)
Front turn signal lights/park-
ing lights
Adjusting the headlight
aimLight 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
Bulb locations

4296-3. Do-it-yourself maintenance
6
Maintenance and care
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
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
 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 t he LEDs burn out,
take your vehicle to your Toyota
dealer to have the light replaced.
●Front turn signa l 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 mal function. Contact
your Toyota dealer for more informa-
tion in the following situations:
●Large drops of water have built up

4306-3. Do-it-yourself maintenance
on the inside of the lens.
●Water has built up inside the light.
■When replacing light bulbs
 P. 4 2 6
■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 th e bulb base, wig-
gle it lightly to make sure it is
securely installed and turn the lights
and turn signal li ghts 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 the bulb base, wig-
gle it lightly to make sure it is
securely installed a nd turn the lights
Replacing light bulbs

4316-3. Do-it-yourself maintenance
6
Maintenance and care
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 the flathead screw-
driver with tape, etc.
2Remove the securing 2
screws and light unit.
Remove the light u nit by pulling it
straight back from the rear of the
vehicle.
3 Disconnect 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

4326-3. Do-it-yourself maintenance
unit.
7Install the light unit.
Align the 2 guides and push the
light unit toward the front of the
vehicle to install it.
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 th e flathead screw-
driver with tape, etc.
2 Turn the bulb base counter-
clockwise and remove it.