2023 TOYOTA PRIUS PRIME Owners Manual

5377-3. Do-it-yourself maintenance
7
Maintenance and care
tioning filter according to the mainte-
nance schedule. In dusty areas or
areas with heavy traffic flow, early
replacement may be required. (For
scheduled maintenance information,
please refer to the “Owner’s Manual
Supplement” or “Scheduled Mainte-
nance”.)
■If air flow from the vents
decreases dramatically
The filter may be clogged. Check
the filter and replace if necessary.
WARNING
■When replacing the air condi-
tioning filter
Check that the charging connec-
tor is not connected. Failure to do
so may result in the air condition-
ing system operating during the
procedure due to the “Battery
Cooler”, possibly resulting in
injury.
NOTICE
■When using the air condition-
ing system
Make sure that a filter is always
installed. Using the air condition-
ing system without a filter may
cause damage to the system.
■When removing the glove box
Always follow the specified proce-
dure to remove the glove box
(  P.535). If the glove box is
removed without following the
specified procedure, the hinge of
the glove box may become dam-
aged.
■To prevent damage to the fil-
ter cover
When moving the filter cover in
the direction of arrow to release
the fitting, pay attention not to
apply excessive force to the
claws. Otherwise, the claws may
be damaged.

5387-3. Do-it-yourself maintenance
■If the electronic key battery is
depleted
The following symptoms may occur:
●The smart key system and wire-
less remote control will not func-
tion properly.
●The operational range will be
reduced.
Prepare the following before
replacing the battery:
 Flathead screwdriver
 Small flathead screwdriver
 Lithium battery CR2450
■Use a CR2450 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 batteries 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
using a small flathead screw-
driver.
When removing the cover, the elec-
tronic key module may stick to the
cover and the battery 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 battery
Replace the battery with a
new one if it is depleted.
Items to prepare
Replacing the battery

5397-3. Do-it-yourself maintenance
7
Maintenance and care
minal facing up.
4When installing, reverse the
steps listed.
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 or 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 battery 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 pressure due to
high altitude or extremely high
temperatures.
●Do not burn, break or cut a bat-
tery.
NOTICE
■When replacing the battery
Use a flathead screwdriver of
appropriate size. Applying exces-
sive force may deform or damage
the cover.
■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.

5407-3. Do-it-yourself maintenance
1Turn the power switch off.
Confirm that the charging connec-
tor is not connected.
2Open the fuse box cover.
Engine compartment:
Push claw and to com-
pletely release the lock, and then lift
up the cover.
Left side instrument panel
Remove the lid.
Right side luggage compart-
ment
Open the deck board. ( P.454)
Hold the handle and pull it toward
you, and then the 3 clips will be dis-
engaged
3 Remove the fuse.
Only type A fuse can be removed
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
AB

5417-3. Do-it-yourself maintenance
7
Maintenance and care
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
Normal fuse
Blown fuse
Type BNormal fuse
Blown fuse
Type CNormal fuse
Blown fuse
■After a fuse is replaced
●When installing the lid, make sure
that the tab is in stalled securely.
●If the lights do not turn on even
after the fuse has been replaced,
a lights may need replacement.
( P.543)
●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,
protecting the wiring harness from
damage.
■When replacing an electronic
component, such as a lights,
etc.
Toyota recommends that you use
genuine Toyota products designed
for this vehicle.
Because certain electronic compo-
nents are connected to circuits
designed to prevent overload, non-
genuine parts not designed for this
vehicle may be unusable.
A
B
A
B
A
B

5427-3. 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.
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.
■To prevent damage to the
engine compartment fuse box
cover
When opening the fuse box, com-
pletely release the claw locks
before lifting up the cover. Other-
wise, the claws may be damaged.
Headlight aim
Vertical movement adjust-
ing bolts
Before checking the head-
light aim
A
B

5437-3. Do-it-yourself maintenance
7
Maintenance and care
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.
■LED lights
The lights 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.
■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 infor-
mation 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 an electronic
component, such as a lights,
etc.
 P.541
Adjusting the headlight
aimExterior lights
If any exterior light does not
turn on, have it replaced by
your Toyota dealer.

5447-3. Do-it-yourself maintenance