2023 TOYOTA BZ4X Owners Manual

5378-2. Steps to take in an emergency
Owners Manual_USA_M42C01_en
8
When trouble arises
One of the following may be the
cause of the problem:
 The charging cable may be
connected to the vehicle.
( P.102)
 The electronic key may not be
functioning properly.
*
( P.539)
 The traction battery may be
completely discharged.
Charge the traction battery.
( P.98)
 There may be a malfunction
in the immobilizer system.
*
( P.68)
 There may be a malfunction
in the shift control system.
*
( P.233, 525)
 The EV system may be mal-
functioning due to an electri-
cal problem such as
electronic key battery deple-
tion or a blown fuse. However,
NOTICE
●Do not put the repair kit directly
onto dusty ground such as sand
at the side of the road. If the
repair kit vacuums up dust, etc.,
a malfunction may occur.
●Make sure the sealant bottle of
the repair kit is in a vertical posi-
tion. The repair kit does not
operate properly when it is laid.
■Precautions for the emer-
gency tire puncture repair kit
●The repair kit power source
should be 12 V DC suitable for
vehicle use. Do not connect the
repair kit to any other source.
●Place the repair kit in a storage
to prevent it from being exposed
to dirt or water.
●Store the repair kit in the lug-
gage compartment out of reach
of children.
●Do not disassemble or modify
the repair kit. Do not subject
parts such as the air pressure
indicator to impacts. This may
cause a malfunction.
■To avoid damage to the tire
pressure warning valves and
transmitters
When a tire is repaired with liquid
sealants, the tire pressure warn-
ing valve and transmitter may not
operate properly. If a liquid seal-
ant is used, contact your Toyota
dealer or other qualified service
shop as soon as possible. After
use of liquid sealant, make sure to
replace the tire pressure warning
valve and transmitter when repair-
ing or replacing the tire. ( P.476)
If the EV system will
not star t
Reasons for the EV system
not starting vary depending
on the situation. Check the
following and perform the
appropriate procedure:
The EV system will not
start even though the cor-
rect starting procedure is
being followed ( P.231)

5388-2. Steps to take in an emergency
Owners Manual_USA_M42C01_en
depending on the type of mal-
function, an interim measure
is available to start the EV
system. (P.538)
 There is a possibility that the
temperature of the traction
battery is extremely low
(approximately below -22°F [-
30°C]). ( P.77, 232)
*: It may not be possible to shift the
shift position from P
One of the following may be the
cause of the problem:
 The 12-volt battery may be
discharged. ( P.541)
 The 12-volt battery terminal
connections may be loose or
corroded. ( P.468)
One of the following may be the
cause of the problem:
 The 12-volt battery may be
discharged. ( P.541)
 One or both of the 12-volt bat-
tery terminals may be discon-
nected. ( P.468)
Contact your Toyota dealer if the problem cannot be repaired, or if
repair procedures are unknown.
When the EV system does not
start, the following steps can be
used as an interim measure to
start the EV system if the power
switch is functioning normally.
Do not use this starting proce-
dure except in cases of emer-
gency.
1
Set the parking brake.
2 Turn the power switch to
ACC.
*
3Press and hold the power
switch for about 15 seconds
while depressing the brake
pedal firmly.
After pressing the power switch for
a while, a message regarding 12-
volt battery control will be dis-
played, however continuing press-
ing the switch.
Even if the EV system can be
started using the above steps,
the system may be malfunction-
ing. Have the vehicle inspected
by your Toyota dealer.
*: Setting can be customized.
( P.571)
The interior lights and
headlights are dim, or the
horn does not sound or
sounds at a low volume
The interior lights and
headlights do not turn on,
or the horn does not
sound
Starting the EV system in
an emergency

5398-2. Steps to take in an emergency
Owners Manual_USA_M42C01_en
8
When trouble arises
■When the electronic key does
not work properly
●Make sure that the smart key sys-
tem has not been deactivated in
the customization setting. If it is
off, turn the function on.
(Customizable features: P.569)
●Check if battery-saving mode is
set. If it is set, cancel the function.
( P.188)
Use the mechanical key
( P.164) in order to perform the
following operations.
If you lose your keys
New genuine keys can be
made by your Toyota dealer
using the other key and the
key number stamped on
your key number plate.
Keep the plate in a safe
place such as your wallet,
not in the vehicle.
NOTICE
■When an electronic key is lost
If the electronic key remains lost,
the risk of vehicle theft increases
significantly. Visit your Toyota
dealer immediately with all
remaining electronic keys that
were provided wit h your vehicle.
If the electronic key
does not operate prop-
erly
If communication between
the electronic key and vehi-
cle is interrupted ( P.188)
or the electronic key cannot
be used because the battery
is depleted, the smart key
system and wireless remote
control cannot be used. In
such cases, the doors can
be opened and the EV sys-
tem can be started by fol-
lowing the procedure below.
NOTICE
■In case of a smart key system
malfunction, o r other key
related problems
Take your vehicle with all the elec-
tronic keys provided with your
vehicle to your Toyota dealer.
Locking and unlocking
the doors

5408-2. Steps to take in an emergency
Owners Manual_USA_M42C01_en
1Locks all the doors
2 Unlocks the door
Turning the key rearward unlocks
the driver’s door. Turning the key
once again within 5 seconds
unlocks the other doors.
■Key linked functions
1 Closes the windo ws (turn and
hold)
*
2 Opens the windows (turn and
hold)
*
*
: These settings must be custom- ized at your Toyota dealer.
1 Depress the brake pedal.
2 Touch the electronic key to
the power switch.
When the electronic key is
detected, a buzzer sounds and the
power switch will turn to ON.
When the smart key system is
deactivated in customization set-
ting, the power switch will turn to
ACC.
3Firmly depress the brake
pedal and check that is
displayed on the multi-infor-
mation display.
4 Press the power switch
shortly and firmly.
In the event that the EV system still
WARNING
■When using the mechanical
key and operating the power
windows
Operate the power window after
checking to make sure that there
is no possibility of any passenger
having any of their body parts
caught in the window. Also, do not
allow children to operate the
mechanical key. It is possible for
children and other passengers to
get caught in the power window.
Starting the EV system

5418-2. Steps to take in an emergency
Owners Manual_USA_M42C01_en
8
When trouble arises
cannot be started, contact your Toy-
ota dealer.
■Stopping the EV system
Shift the shift position to P, set the
parking brake and press the power
switch as you no rmally do when
stopping the EV system.
■Replacing the key battery
As the above proc edure is a tempo-
rary measure, it is recommended
that the electronic key battery be
replaced immediate ly when the bat-
tery is depleted. ( P.497)
■Alarm
If a door is unlocked using the
mechanical key when the alarm sys-
tem is set, the alarm may be trig-
gered. ( P. 6 9 )
■Changing power switch modes
Release the brake pedal and press
the power switch in step 3 above.
The EV system does not start and
modes will be cha nged each time
the switch is pressed. ( P.234)
If you have a set of jumper (or
booster) cables and a second
vehicle with a 12-volt battery,
you can jump start your vehicle
by following the steps below.
1Confirm that the electronic
key is being carried.
When connecting the jumper (or
booster) cables, depending on the
situation, the alarm may activate
and the doors locked. ( P. 7 0 )
2 Open the hood ( P.462).
3 Open the positive (+) battery
terminal cover.
While pressing on the claw, open
the cover as shown in the illustra-
If the 12-volt batter y is
discharged
The following procedures
may be used to start the EV
system if the vehicle’s 12-
volt battery is discharged.
You can also call your Toy-
ota dealer or a qualified
repair shop.
Restarting the EV system

5428-2. Steps to take in an emergency
Owners Manual_USA_M42C01_ention.
4
Connect a positive jumper cabl e clamp to on your vehicle and
connect the clamp on the other end of the positive cable to on
the second vehicle. Then, connect a negative cable clamp to
on the second vehicle and connect the clamp at the other end of
the negative cable to .
Positive (+) battery terminal (your vehicle)
Positive (+) battery terminal (second vehicle)
Negative (-) battery term inal (second vehicle)
Solid, stationary, unpainted metallic point away from the batte ry
and any moving parts as shown in the illustration
5 Start the engine of the sec-
ond vehicle. Increase the
engine speed slightly and
maintain at that level for approximately 5 minutes to
recharge the 12-volt battery
of your vehicle.

5438-2. Steps to take in an emergency
Owners Manual_USA_M42C01_en
8
When trouble arises
6 Open and close any of the
doors of your vehicle with the
power switch OFF.
7 Maintain the engine speed of
the second vehicle and start
the EV system of your vehi-
cle by turning the power
switch to ON.
8 Make sure the “READY” indi-
cator comes on. If the indica-
tor light does not come on,
contact your Toyota dealer.
9 Once the EV system has
started, remove the jumper
cables in the exact reverse
order from which they were
connected.
10 Close the positive (+) battery
terminal cover.
Once the EV system starts,
have the vehicle inspected at
your Toyota dealer as soon as
possible.
■Starting the EV system when
the 12-volt battery is dis-
charged
The EV system cannot be started by
push-starting.
■To prevent 12-volt battery dis-
charge
●Turn off the headlights, the air
conditioning system, the audio
system, etc. while the EV system
is off.
●Turn off any unnecessary electri-
cal components when the vehicle
is running at a low speed for an
extended period, such as in heavy
traffic.
■Charging the 12-volt battery
The electricity stored in the 12-volt
battery will discha rge gradually even
when the vehicle i s not in use, due
to natural dischar ge and the drain-
ing effects of certain electrical appli-
ances. If the vehicle is left for a long
time, the 12-volt battery may dis-
charge, and the EV system may be
unable to start. (The 12-volt battery
recharges automatically while the
EV system is operating.)
■When the 12-volt battery is
removed or discharged
●Information stored in the ECU is
cleared. When the 12-volt battery
is depleted, have the vehicle
inspected at your Toyota dealer.
●In some cases, it may not be pos-
sible to unlock the doors using the
smart key system when the 12-
volt battery is discharged. Use the
wireless remote c ontrol or the
mechanical key to lock or unlock
the doors.
●The EV system may not start on
the first attempt a fter the 12-volt
battery has recharged but will start
normally after the second attempt.
This is not a malfunction.
●The power switch mode is memo-
rized by the vehicle. When the 12-
volt battery is reconnected, the
system will return to the mode it
was in before the 12-volt battery
was discharged. Before discon-
necting the 12-volt battery, turn
the power switch off.
If you are unsure what mode the
power switch was in before the
12-volt battery discharged, be
especially careful when recon-
necting the 12-volt battery.
●If the 12-volt battery discharges, it
may not be possible to shift the
shift position to o ther positions. In
this case, the vehicle cannot be
towed without lifting both front
wheels because the front wheels
will be locked.
●The power back door (if equipped)

5448-2. Steps to take in an emergency
Owners Manual_USA_M42C01_enmust be initialized. (
P.181)
■When replacing the 12-volt bat-
tery
●Use a 12-volt battery that con-
forms to European regulations.
●Use a 12-volt battery that the case
size is same as the previous one
(LN1), 20 hour rate capacity
(20HR) is equiva lent (45Ah) or
greater, and performance rating
(CCA) is equivalent (286A) or
greater.
• If the sizes differ, the 12-volt bat- tery cannot be properly secured.
• If an improper 12- volt battery is
used, battery performance may
decrease and the EV system may
not be able to restart.
• If the 20 hour rate capacity is low,
even if the time period where the
vehicle is not used is a short time,
the 12-volt battery may discharge
and EV system may not be able to
start.
For details, consult your Toyota
dealer.
WARNING
■When removing the 12-volt
battery terminals
Always remove the negative (-)
terminal first. If the positive (+) ter-
minal contacts any metal in the
surrounding area when the posi-
tive (+) terminal is removed, a
spark may occur, l eading to a fire
in addition to electrical shocks
and death or serious injury.
■Avoiding 12-volt battery fires
or explosions
Observe the following precautions
to prevent accidentally igniting the
flammable gas that may be emit-
ted from the 12-volt battery:
●Make sure each jumper cable is
connected to the correct termi-
nal and that it is not unintention-
ally in contact with any other
than the intended terminal.
●Do not allow the other end of
the jumper cable connected to
the “+” terminal to come into
contact with any other parts or
metal surfaces in the area, such
as brackets or unpainted metal.
●Do not allow the + and - clamps
of the jumper cables to come
into contact with each other.
●Do not smoke, use matches,
cigarette lighter s or allow open
flame near the 1 2-volt battery.
■12-volt battery precautions
The 12-volt battery contains poi-
sonous and corrosive acidic elec-
trolyte, while related parts contain
lead and lead compounds.
Observe the following precautions
when handling the 12-volt battery:
●When working with the 12-volt
battery, always wear safety
glasses and take care not to
allow any battery fluids (acid) to
come into contact with skin,
clothing or the vehicle body.
●Do not lean over the 12-volt bat-
tery.
●In the event that battery fluid
(acid) comes into contact with
the skin or eyes, immediately
wash the affected area with
water and seek medical atten-
tion.
Place a wet sponge or cloth
over the affected area until
medical attention can be
received.
●Always wash your hands after
handling the 12-volt battery and
other battery-related parts.
●Do not allow children near the
12-volt battery.