2022 TOYOTA BZ4X BATTERY

547
8
Owners Manual_Europe_M42D76_en
8-2. Steps to take in an emergency
When trouble arises
order from which they were con-
nected.
10 Close the positive (+) battery
terminal cover.
Once the EV system starts, have
the vehicle inspected at any autho-
rized Toyota retailer or Toyota
authorized repairer, or any reliable
repairer as soon as possible.
■Starting the EV system when the 12-volt battery is discharged
The EV system cannot be started by push-starting.
■To prevent 12-volt battery dis-charge
●Turn off the headlights, the air condi-tioning system, the audio system, etc.
while the EV system is off.
●Turn off any unnecessary electrical
components when the vehicle is run- ning 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 bat- tery will discharge gradually even when the vehicle is not in use, due to natural
discharge and the draining effects of certain electrical appliances. If the vehi-cle is left for a long time, the 12-volt bat-
tery may discharge, and the EV system may be unable to start. (The 12-volt bat-tery 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 any authorized Toyota retailer or Toyota authorized repairer, or any reli-able repairer.
●In some cases, it may not be possible to unlock the doors using the smart
entry & start system when the 12-volt
battery is discharged. Use the wire-
less remote control or the mechanical key to lock or unlock the doors.
●The EV system may not start on the first attempt after the 12-volt battery has recharged but will start normally
after the second attempt. This is not a malfunction.
●The power switch mode is memorized by the vehicle. When the 12-volt bat-tery is reconnected, the system will
return to the mode it was in before the 12-volt battery was discharged. Before disconnecting the 12-volt bat-
tery, 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 reconnecting the 12-volt battery.
●If the 12-volt battery discharges, it may not be possible to shift the shift
position to other 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) must be initialized. ( P.198)
■When replacing the 12-volt battery
●Use a 12-volt battery that conforms 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
equivalent (45Ah) or greater, and per- formance rating (CCA) is equivalent (286A) or greater.
• If the sizes differ, the 12-volt battery 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 vehi-cle is not used is a short time, the 12-
volt battery may discharge and EV system may not be able to start.

548
Owners Manual_Europe_M42D76_en
8-2. Steps to take in an emergency
For details, consult with at any autho-
rized Toyota retailer or Toyota autho- rized repairer, or any reliable repairer as soon as possible.
WARNING
■When removing the 12-volt bat-tery terminals
Always remove the negative (-) termi-
nal first. If the positive (+) terminal contacts any metal in the surrounding area when the positive (+) terminal is
removed, a spark may occur, leading 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 flam-mable gas that may be emitted from
the 12-volt battery:
●Make sure each jumper cable is connected to the correct terminal
and that it is not unintentionally 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 con- tact with each other.
●Do not smoke, use matches, ciga-rette lighters or allow open flame near the 12-volt battery.
■12-volt battery precautions
The 12-volt battery contains poison- ous and corrosive acidic electrolyte,
while related parts contain lead and lead compounds. Observe the follow-ing precautions when handling the
12-volt battery:
●When working with the 12-volt bat- tery, always wear safety glasses
and take care not to allow any bat- tery fluids (acid) to come into con-tact with skin, clothing or the vehicle
body.
●Do not lean over the 12-volt battery.
●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 attention.
Place a wet sponge or cloth over the affected area until medical attention can be received.
●Always wash your hands after han-dling the 12-volt battery and other
battery-related parts.
●Do not allow children near the 12-
volt battery.
■When replacing the 12-volt bat-
tery
●When the vent plug is close to the hold down clamp, the battery fluid
(acid) may leak.
●For information regarding battery
replacement, contact any autho- rized Toyota retailer or Toyota authorized repairer, or any reliable
repairer.
NOTICE
■When handling jumper cables
When connecting the jumper cables,
ensure that they do not become entangled in the cooling fan.

549
8
Owners Manual_Europe_M42D76_en
8-2. Steps to take in an emergency
When trouble arises
1Stop the vehicle in a safe place
and turn off the air conditioning
system.
2 Leave the EV system operating
and carefully lift the hood.
3 Check if the cooling fan is oper-
ating.
If the fan is operating:
Wait until the “EV System over-
heated Output power reduced”
message disappears and then
stop the EV system. If the mes-
sage does not disappear, call
any authorized Toyota retailer or
Toyota authorized repairer, or
any reliable repairer.
If the fan is not operating:
Stop the EV system immediately
and call any authorized Toyota
retailer or Toyota authorized
repairer, or any reliable repairer.
4 After the EV system has cooled
down, inspect the hoses and
radiator core (radiator) for any
leaks.
Radiator
Cooling fan
If a large amount of coolant leaks,
immediately contact any authorized
Toyota retailer or Toyota authorized
repairer, or any reliable repairer.
If your vehicle overheats
When “EV System overheated
Output power reduced” is
shown on the multi-informa-
tion display, your vehicle may
be overheating.
NOTICE
■Cooling system coolant
The radiator coolant is exclusive for radiator usage. Damage may occur when water or any other type of cool-
ant is used, so never use any other fluid. When there is no “Toyota Genu-ine Traction Battery Coolant”, immedi-
ately contact any authorized Toyota retailer or Toyota authorized repairer, or any reliable repairer.
Correction procedures

550
Owners Manual_Europe_M42D76_en
8-2. Steps to take in an emergency
5The coolant level is satisfactory
if it is between the “MAX” and
“MIN” lines on the reservoir.
Reservoir
“MAX” line
“MIN” line
6 If the coolant is insufficient,
replenish with “Toyota Genuine
Traction Battery Coolant”.
If you don’t have “Toyota Genuine Trac-
tion Battery Coolant”, contact any authorized Toyota retailer or Toyota authorized repairer, or any reliable
repairer.
1 Remove the bolt.
2 Open the reservoir cap.
Have the vehicle inspected at the
nearest authorized Toyota retailer
or Toyota authorized repairer, or
any reliable repairer as soon as
possible.
WARNING
■To prevent an accident or injury when inspecting under the hood of your vehicle
Observe the following precautions.
Failure to do so may result in serious injury such as burns.
●If steam is seen coming from under the hood, do not open the hood
until the steam has subsided. The motor compartment may be very hot.
●Keep hands and clothing (espe-cially a tie, a scarf or a muffler)
away from the fan. Failure to do so may cause the hands or clothing to be caught, resulting in serious
injury.
●Do not loosen the coolant reservoir
cap while the EV system and radia- tor are hot. High temperature steam or coolant could spray out.
NOTICE
■When adding coolant
Add coolant slowly after the EV sys-
tem has cooled down sufficiently. Adding cool coolant to a hot EV sys-tem too quickly can cause damage to
the EV system.
■To prevent damage to the cooling
system
Observe the following precautions:
●Avoid contaminating the coolant
with foreign matter (such as sand or dust, etc.).
●Do not use water or any other cool-ant when refilling coolant. Also, do not use any additive agents for the
coolant.

556
Owners Manual_Europe_M42D76_en
9-1. Specifications
*1: The coolant capacity is the quantity of reference.
If replacement is necessary, contact any authorized Toyota reta iler or Toyota
authorized repairer, or any reliable repairer.
*2: 2WD models
*3: AWD models
Rear electric motor (traction motor) (AWD models)
Model1YM
Typ ePermanent magnet synchronous motor
Maximum output80 kW
Maximum torque168.5 N•m (17.2 kgf•m, 124.3 ft•lbf)
Traction battery
Typ eLithium-ion battery
Vo lt a ge3.7 V/cell
Capacity201 Ah
Quantity96 cells
Nominal voltage355.2 V
Cooling system
Capacity*15.9 L (6.2 qt., 5.2 Imp.qt.)*2
7.4 L (7.8 qt., 6.5 Imp.qt.)*3
Coolant type
Use either of the following:
• “Toyota Genuine Traction Battery Coolant”
• Similar high-quality ethylene glycol-based,
low electric conductivity coolant, non-amine
and non-borate coolant with azole additives.
Do not use plain water alone.

557
9
Owners Manual_Europe_M42D76_en
9-1. Specifications
Vehicle specifications■12-volt battery
NOTICE
■Cooling system coolant
In order to ensure maximum performance of the traction battery cooling system
and limit risks of battery short-circuit and other damage to yo ur vehicle, Toyota recommends using “Toyota Genuine Traction Battery Coolant” or s imilar high- quality ethylene glycol-based, low electric conductivity coolan t, non-amine and
non-borate coolant with azole additives.
Toyota cannot guarantee that the use of a product other than “T oyota Genuine Traction Battery Coolant” will prevent risks of battery short-c ircuit or other dam-
age.
Never use water as it will cause damage.
Do not reuse coolant that has been removed from the radiator.
Heater system
Capacity4.0 L (4.2 qt., 3.5 Imp.qt.)
Coolant type
Use either of the following:
• “Toyota Super Long Life Coolant”
• Similar high-quality ethylene glycol-based
non-silicate, non-amine, non-nitrite, and non-
borate coolant with long-life hybrid organic
acid technology
Do not use plain water alone.
Electrical system
Specific gravity reading at 20°C
(68°F):
1.250 or higher
If the specific gravity is lower than the standard
value, charge the 12-volt battery.

561
9
Owners Manual_Europe_M42D76_en
9-2. Customization
Vehicle specifications
9-2.Customiz ation
■Changing using the multi-
information display
1 Press or of the meter
control switches and select .
2 Press or of the meter
control switches, select the item.
3 To switch the function on and
off, press icon to switch to
the desired setting.
4 To perform detailed setting of
the function, press and hold
and display the setting screen.
The method of detailed setting differs
for each screen. Please refer to the advice sentence displayed on the screen.
To go back to the previous screen or
exit the customize mode, press .
■Changing by using the multi-
media system
1 Select on the main menu
2 Select “Vehicle customize”.
3 According to the display, select
the desired setting.
Various setting can be changed.
Refer to the list of settings that can be
changed for details.
■When customizing using the multi-
media system or multi-information display
Stop the vehicle in a safe place, apply
the parking brake, and shift the shift position to P. Also, to prevent 12-volt battery discharge, leave the EV system
operating while customizing the fea- tures.
Some function settings are changed simultaneously with other fu nctions
being customized. Contact any authorized Toyota retailer or Toy ota autho-
rized repairer, or any reliable repairer for further details.
Customizable features
Your vehicle includes a variety
of electronic features that can
be personalized to your prefer-
ences. The settings of these
features can be changed by
using the multi-information
display, multimedia system, at
any authorized Toyota retailer
or Toyota authorized repairer,
or any reliable repairer.
Customizing vehicle fea-
tures
NOTICE
■During customization
To prevent 12-volt battery discharge, ensure that the EV system is operat-
ing while customizing features.
Customizable features

562
Owners Manual_Europe_M42D76_en
9-2. Customization
Settings that can be changed using the multimedia system
Settings that can be changed using the multi-information displ ay
Settings that can be changed by any authorized Toyota retailer or Toy ota
authorized repairer, or any reliable repairer
Definition of symbols: O = Available,  = Not available
■Alarm (P.77)
■Charging system (P.121, 129)
■Gauges, meters and multi-information display (P.172, 175)
FunctionDefault settingCustomized set-
ting
Deactivates the alarm when the
doors are unlocked using the
mechanical key
OffOn——O
FunctionDefault settingCustomized set-
ting
Charging currentMAX8AOO–16A
Charging limitFull
90%
OO–
80%
70%
60%
50%
DC charging powerMAX
125 kW
OO–100 kW
75 kW
50 kW
Battery coolerOnOffOO–
Function*1Default settingCustomized set-
ting
Language*2EnglishExcept English*3O