open TOYOTA BZ4X 2023 Owners Manual

4617-3. Do-it-yourself maintenance
Owners Manual_USA_M42C01_en
7
Maintenance and care
Heater cool-
ant level
(  P.465)
• “Toyota Super
Long Life Cool-
ant” or a similar
high quality eth-
ylene glycol-based
non-silicate, non-
amine, non-nitrite
and non-borate
coolant with long-
life hybrid organic
acid technology
“Toyota Super
Long Life Cool-
ant” is pre-mixed
with 50% coolant
and 50% deion-
ized water.
• Funnel (used only for adding coolant)
Fuses
( P.499)• Fuse with same
amperage rating
as original
Headlight aim
( P.501)Phillips-head
screwdriver
Radiator and
condenser
( P.466)

Tire inflation
pressure
( P.491)• Tire pressure
gauge
• Compressed air source
Washer fluid
( P.471)
• Water or washer
fluid containing
antifreeze (for win-
ter use)
• Funnel (used only for adding water or
washer fluid)
ItemsParts and toolsWARNING
The motor compartment contains
many mechanisms and fluids that
may move suddenly, become hot,
or become electrically energized.
To avoid death or serious injury,
observe the following precautions.
■When working on the motor
compartment
●Make sure that “POWER ON”
on the multi-information display
and the “READY” indicator are
both off.
●Keep hands, clothing and tools
away from the moving fan.
●Be careful not to touch the
motor, power control unit, radia-
tor, etc., right after driving as
they may be hot. Coolant and
other fluids may also be hot.
●Do not leave anything that may
burn easily, such as paper and
rags, in the motor compartment.
●Do not smoke, cause sparks or
expose an open flame to the 12-
volt battery. 12-volt battery
fumes are flammable.
●Be extremely cautious when
working on the 12-volt battery. It
contains poisonous and corro-
sive sulfuric acid.
●Never touch, disassemble,
remove or replace the high volt-
age parts, cables and their con-
nectors. It can cause severe
burns or electric shock that may
result in death or serious injury.

4627-3. Do-it-yourself maintenance
Owners Manual_USA_M42C01_en
1Pull the hood lock release
lever.
The hood will pop up slightly.
2Push the auxiliary catch lever
to the left and lift the hood.
WARNING
■When working near the elec-
tric cooling fan or radiator
grille
Be sure the power switch is OFF.
With the power switch in ON, the
electric cooling fan may automati-
cally start to run if the air condi-
tioning is on and/or the coolant
temperature is high. ( P.466)
■Safety glasses
Wear safety glasses to prevent
flying or falling material, fluid
spray, etc., from getting in your
eyes.
Hood
Opening the hood

4637-3. Do-it-yourself maintenance
Owners Manual_USA_M42C01_en
7
Maintenance and care
3 Hold the hood open by insert-
ing the supporting rod into
the slot.
WARNING
■Pre-driving check
Check that the hood is fully closed
and locked.
If the hood is not locked properly,
it may open while the vehicle is in
motion and cause an accident,
which may result in death or seri-
ous injury.
■After installing the support
rod into the slot
Make sure the rod is properly
inserted into the slot to prevent
the hood from shutting on your
head or body.
NOTICE
■When closing the hood
Be sure to return the support rod
to its clip before closing the hood.
Closing the hood without return-
ing the support rod properly could
cause the hood to bend.

4687-3. Do-it-yourself maintenance
Owners Manual_USA_M42C01_en
■Checking fluid level
The brake fluid level should be
between the “MAX” and “MIN”
lines on the tank.
Reservoir cap
“MAX” line
“MIN” line
■Adding fluid
Make sure to check the fluid
type and prepare the necessary
item.
 Fluid type
FMVSS No.116 DOT 3 or SAE J1703 brake fluid
FMVSS No.116 DOT 4 or SAE
J1704 brake fluid

Item
Clean funnel
■Brake fluid can absorb moisture
from the air
Excess moisture in the brake fluid
can cause a dangerous loss of brak-
ing efficiency. Use only newly
opened brake fluid.
Check the 12-volt battery as fol-
lows.
■12-volt battery exterior
Make sure that the 12-volt bat-
tery terminals are not corroded
NOTICE
■When adding coolant
Coolant is neither plain water nor
straight antifreeze. The correct
mixture of water and antifreeze
must be used to provide proper
lubrication, corrosion protection
and cooling. Be sure to read the
antifreeze or coolant label.
■If you spill coolant
Be sure to wash it off with water to
prevent it from d amaging parts or
paint.
Checking and adding the
brake fluidWARNING
■When filling the reservoir
Take care as brake fluid can harm
your hands and eyes and damage
painted surfaces.
If fluid gets on your hands or in
your eyes, flush the affected area
with clean water immediately. If
you still experience discomfort,
see a doctor.
NOTICE
■If the fluid level is low or high
It is normal for the brake fluid level
to go down slight ly as the brake
pads wear out or when the fluid
level in the accumulator is high.
If the reservoir needs frequent
refilling, there m ay be a serious
problem.
Checking the 12-volt bat-
tery

4697-3. Do-it-yourself maintenance
Owners Manual_USA_M42C01_en
7
Maintenance and care
and that there are no loose con-
nections, cracks, or loose
clamps. Terminals
Hold-down clamp
■Checking 12-volt battery
fluid
Check that the level is between
the “UPPER LEVEL” and
“LOWER LEVEL” lines.
“UPPER LEVEL” line
“LOWER LEVEL” line
If the fluid level is at or below the
“LOWER LEVEL” line, add distilled
water.
■Adding distilled water
1 Remove the vent plug.
2 Add distilled water.
If the “UPPER LEVEL” cannot be
seen, check the fluid level by look- ing directly at the cell.
3
Put the vent plug back on
and close it securely.
■Before recharging
When recharging, the 12-volt bat-
tery produces hydrogen gas which
is flammable and explosive. There-
fore, observe the following precau-
tions before recharging:
●If recharging with the 12-volt bat-
tery 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 12-volt battery.
■After recharging/reconnecting
the 12-volt battery
●The EV system may not start. Fol-
low the procedure below to initial-
ize the system.
1 Shift the shift position to P.
2 Open and close any of the doors.
3 Restart the EV system.
●Unlocking the doors using the
Smart key system may not be
possible immediately after recon-
necting the 12-volt battery. If this
happens, use the wireless remote
control or the mechanical key to
lock/unlock the doors.
●Start the EV system with the
power switch in ACC. The EV sys-
tem may not start with the power
switch turned off. However, the EV
system will operate normally from

4707-3. Do-it-yourself maintenance
Owners Manual_USA_M42C01_enthe second attempt.
●The power switch mode is
recorded by the vehicle. If the 12-
volt battery is
disconnected and
reconnected, the vehicle will
return the power switch mode to
the status it was in before the 12-
volt battery was disconnected.
Make sure to turn off the power
switch before disconnecting the
12-volt battery. Take extra care
when connecting the 12-volt bat-
tery if the power switch mode prior
to the 12-volt battery being dis-
connected is unknown.
If the EV system will not start even
after multiple att empts at all the
methods above, contact your Toyota
dealer.
WARNING
■Chemicals in the 12-volt bat-
tery
Batteries contai n poisonous and
corrosive sulfuric 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
12-volt battery:
●Do not cause sparks by touch-
ing the 12-volt battery terminals
with tools.
●Do not smoke or light a match
near the 12-volt battery.
●Avoid contact with eyes, skin
and clothes.
●Never inhale or swallow electro-
lyte.
●Wear protective safety glasses
when working near the 12-volt
battery.
●Keep children away from the
12-volt battery.
■Where to safely charge the
12-volt battery
Always charge the 12-volt battery
in an open area. Do not charge
the 12-volt battery in a garage or
closed room where there is insuf-
ficient ventilation.
■Emergency measures regard-
ing electrolyte
●If electrolyte gets in your eyes
Flush your eyes with clean
water for at least 15 minutes
and get immediate medical
attention. If possible, continue
to apply water with a sponge or
cloth while traveling to the near-
est medical facility.
●If electrolyte gets on your skin
Wash the affected area thor-
oughly. If you feel pain or burn-
ing, get medical attention
immediately.
●If electrolyte gets on your
clothes
It can soak through clothing on
to your skin. Imm ediately take
off the clothing and follow the
procedure above if necessary.
●If you accidentally swallow elec-
trolyte
Drink a large quantity of water
or milk. Get emergency medical
attention immediately.
■When there is insufficient 12-
volt battery fluid
Do not use if there is insufficient
fluid in the 12-volt battery. There
is a possible danger that the 12-
volt battery may explode.

4947-3. Do-it-yourself maintenance
Owners Manual_USA_M42C01_en
Use only Toyota wheel bolts
and wrenches designed for
use with your aluminum
wheels.
 When rotating, repairing or
changing your tires, check
that the wheel bolts are still
tight after driving 1000 miles
(1600 km).
 Be careful not to damage the
aluminum wheels when using
tire chains.
 Use only Toyota genuine bal-
ance weights or equivalent
and a plastic or rubber ham-
mer when balancing your
wheels. 1
Turn the power switch off.
Confirm that the charging connec-
tor is not connected. Also, do not
use the Remote Air Conditioning
System during the procedure.
2Open the front passenger’s
door.
By keeping the door open, unex-
pected operation of the Remote Air
Conditioning System can be pre-
vent. ( P.409)
3 While pressing the claw, hold
handle and remove the
panel.
NOTICE
■Replacing tire pressure warn-
ing valves and transmitters
●Because tire repair or replace-
ment may affect the tire pres-
sure warning valves and
transmitters, make sure to have
tires serviced by your Toyota
dealer or other qualified service
shop. In addition, make sure to
purchase your tire pressure
warning valves and transmit-
ters at your Toyota dealer.
●Ensure that only genuine Toyota
wheels are used on your vehi-
cle.
Tire pressure warning valves
and transmitters may not work
properly with non-genuine
wheels.
Aluminum wheel precau-
tions
Air conditioning filter
The air conditioning filter
must be changed regularly
to maintain air conditioning
efficiency.
Removal method

4997-3. Do-it-yourself maintenance
Owners Manual_USA_M42C01_en
7
Maintenance and care
1 Turn the power switch off.
Confirm that the charging connec-
tor is not connect ed. Also, do not
use the Remote Air Conditioning
System during the procedure.
2 Open the fuse box cover.
Motor compartment
Push the tab in and lift the lid off.
Left side instrument panel
Remove 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
Normal fuse
Blown fuse
Type B
Normal fuse
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

5068-1. Essential information
Owners Manual_USA_M42C01_en
If the door can be opened,
open the door and exit the
vehicle.
 If the door can not be opened,
open the window using the
power window switch and
ensure an escape route.
 If the window can be opened,
exit the vehicle through the
window.
 If the door and window cannot
be opened due to the rising
water, remain calm, wait until
the water level inside the
vehicle rises to the point that
the water pressure inside of
the vehicle equals the water
pressure outside of the vehi-
cle and then open the door
after waiting for the rising
water to enter the vehicle, and
exit the vehicle. When the outside water level exceeds
half the height of the door, the
door cannot be opened from
the inside due to water pres-
sure.
■Water level exceeds the floor
When the water level exceeds the
floor and time has passed, the elec-
trical equipment will get damaged,
the power windows will not operate,
the motor stop, and the vehicle may
not be able to get moving.
■Using an emergency escape
hammer*
Laminated glass is used in the wind-
shield on this vehicle.
Laminated glass cannot be shat-
tered with an emergency hammer
*.
Tempered glass is used in the win-
dows on this vehicle.
*: Contact your Toyota dealer or
aftermarket accessory manufac-
turer for further information about
an emergency hammer.
If the vehicle is sub-
merged or water on
the road is rising
This vehicle is not designed
to be able to drive on roads
that are deeply flooded with
water. Do not drive on roads
where the roads may be
submerged or the water
may be rising. It is danger-
ous to remain in the vehicle,
if it anticipated that the
vehicle will be flooded or
set a drift. Remain calm and
follow the following.
WARNING
■Caution while driving
Do not drive on roads where the
roads may be submerged or the
water may be rising. Otherwise
the vehicle may be damaged and
cannot move, as well as become
flooded and set a drift, which may
lead to death.

5118-2. Steps to take in an emergency
Owners Manual_USA_M42C01_en
8
When trouble arises
 Fluid leaks under the vehicle
(Water dripping from the air
conditioning after use is nor-
mal.)
 Flat-looking tires or uneven
tire wear
 Excessive tire squeal when
cornering
 Strange noises related to the
suspension system
 Other noises related to the EV
system
 Stumbling or running roughly
 Appreciable loss of power
 Vehicle pulls heavily to one
side when braking
 Vehicle pulls heavily to one
side when driving on a level
road
 Loss of brake effectiveness,
WARNING
■While towing
●When towing using cables or
chains, avoid sudden starts,
etc., which place excessive
stress on the towing eyelets,
cables or chains. The towing
eyelets, cables or chains may
become damaged, broken
debris may hit people, and
cause serious damage.
●Do not perform any of the fol-
lowing as doing so may cause
the parking lock mechanism to
engage, locking the front
wheels and possibly leading to
an accident resulting in death or
serious injury:
• Unfasten the driver’s seat belt and open the driver’s door.
• Turn the power switch off.
■Installing towi ng eyelets to
the vehicle
Make sure that towing eyelets are
installed securely. If not securely
installed, towing eyelets may
come loose during towing.
NOTICE
■To prevent damage to the
vehicle during emergency
towing
Do not secure cables or chains to
the suspension components.
If you think something
is wrong
If you notice any of the fol-
lowing symptoms, your
vehicle probably needs
adjustment or repair. Con-
tact your Toyota dealer as
soon as possible.
Visible symptoms
Audible symptoms
Operational symptoms