2022 TOYOTA BZ4X BATTERY

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7-3. Do-it-yourself maintenance
1Remove the lock and take out
the mechanical key.
2 Remove the cover.
Use a screwdriver of an appropriate size. Forcedly prying may cause the cover damaged.
To prevent damage to the key, cover the tip of the flathead screwdriver with a rag.
3 Remove 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 visi-
ble.
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 “+” termi-
nal facing up.
4 When installing the key cover
and mechanical key, install by
conducting step 2 and step 1
with the directions reversed.
Replacing the battery
WARNING
■Battery precautions
Observe the following precautions.
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 bat- tery 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 bat-teries 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 any authorized Toyota retailer or Toyota authorized
repairer, or any reliable repairer.
●If you accidentally swallow a battery
or put a battery into a part of your body, get emergency medical atten-tion immediately.

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7-3. Do-it-yourself maintenance
Maintenance and care
1Turn the power switch off.
Confirm that the charging connector is not connected. 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 (left-
hand drive vehicles)
Remove the lid.
WARNING
■To prevent battery explosion or leakage of flammable liquid or
gas
●Replace the battery with a new bat- tery 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 tempera-
tures.
●Do not burn, break or cut a battery.
■Certification for the electronic key battery
CAUTION RISK OF EXPLOSION IF BATTERY IS REPLACED BY AN INCORRECT
TYPE. DISPOSE OF USED BATTERIES ACCORDING TO THE
INSTRUCTIONS.
NOTICE
■When replacing the battery
Use a screwdriver of appropriate size. Applying excessive 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 con-trol.
●Do not bend either of the battery terminals.
Checking and replacing
fuses
If any of the electrical compo-
nents do not operate, a fuse
may have blown. If this hap-
pens, check and replace the
fuses as necessary.
Checking and replacing
fuses

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8
When trouble arises
When trouble arises
8-1. Essential information
Emergency flashers .......... 506
If your vehicle has to be
stopped in an emergency 506
If the vehicle is submerged or
water on the road is rising
....................................... 507
8-2. Steps to take in an emer-
gency
If your vehicle needs to be
towed .............................. 509
If you think something is wrong
....................................... 513
If a warning light turns on or a
warning buzzer sounds... 515
If a warning message is dis-
played ............................. 523
If you have a flat tire ......... 528
If the EV system will not start
....................................... 539
If you lose your keys ......... 541
If the charging port lids cannot
be opened ...................... 541
If the electronic key does not
operate properly ............. 542
If the 12-volt battery is dis-
charged .......................... 544
If your vehicle overheats... 549
If the vehicle becomes stuck
....................................... 551

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8-2. Steps to take in an emergency
When trouble arises
8-2.Ste ps to take in an emerg ency
In the following situations, it is not
possible to be towed by another
vehicle using cables or chains, as
the front wheels may be locked due
to the parking lock. Contact any
authorized Toyota retailer or Toyota
authorized repairer, or any reliable
repairer or commercial towing ser-
vice.
 There is a malfunction in the shift
control system. ( P.245, 527)
 There is a malfunction in the
immobilizer system. ( P. 7 5 )
 There is a malfunction in the
smart entry & start system.
( P.542)
 The 12-volt battery is dis-
charged. ( P.544)
The following may indicate a prob-
lem with your transmission. Contact
any authorized Toyota retailer or
Toyota authorized repairer, or any
reliable repairer or commercial tow-
ing service before towing.
 The EV system warning mes-
sage is shown on the multi-infor-
mation display and the vehicle
does not move.
 The vehicle makes an abnormal
sound.
From the front (2WD models)
Release the parking brake.
Turn automatic mode off. ( P.255)
If your vehicle needs to
be towed
If towing is necessary, we rec-
ommend having your vehicle
towed by any authorized
Toyota retailer or Toyota
authorized repairer, or any reli-
able repairer or commercial
towing service, using a wheel-
lift type truck or flatbed truck.
Use a safety chain system for
all towing, and abide by all
state/provincial and local laws.
Situations when it is not
possible to be towed by
another vehicle
Situations when it is neces-
sary to contact dealers
before towing
Towing with a wheel-lift type
truck

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8-2. Steps to take in an emergency
When trouble arises
■Electric power steering system warning light (warning buzzer)
■Traction battery charge warning light
■Driver’s and front passenger’s seat belt reminder light (warning
buzzer*)
*: Driver’s and front passenger’s seat belt warning buzzer:
The driver’s and front passenger’s seat belt warning buzzer sou nds to alert the
driver and front passenger that his or her seat belt is not fas tened. If the seat belt is
unfastened, the buzzer sounds intermittently for a certain peri od of time after the
vehicle reaches a certain speed.
■Rear passengers’ seat belt reminder lights (warning buzzer*)
*: Rear passengers’ seat belt warning buzzer:
Warning lightDetails/Actions
(Red)
or
(Yellow)
Indicates a malfunction in the EPS (Electric Power Steering) sy s-
tem
 Have the vehicle inspected by any authorized Toyota
retailer or Toyota authorized repairer, or any reliable
repairer immediately.
Warning lightDetails/Actions
Indicates that the remaining charge of the traction battery is low
and charging is required
When the outside temperature is low, this light may turn on ear lier
than usual to urge the driver to charge the traction battery ea rly.
 Charge the traction battery. (P. 1 1 4 )
Warning lightDetails/Actions
Warns the driver and/or front passenger to fasten their seat belts
 Fasten the seat belt.
If the front passenger’s seat is occupied, the front passen-
ger’s seat belt also needs to be fastened to make the warn-
ing light (warning buzzer) turn off.
Warning lightDetails/Actions
Warns the rear passengers to fasten their seat belts
 Fasten the seat belt.

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8-2. Steps to take in an emergency
When trouble arises
■Parking brake indicator
■Brake hold operated indicator
■Warning buzzer
In some cases, the buzzer may not be heard due to being in a noisy location or audio sound.
■Front passenger detection sensor,
seat belt reminder and warning buzzer
●If luggage is placed on the front pas-senger seat, the front passenger detection sensor may cause the warn-
ing light to flash and the warning buzzer to sound even if a passenger
is not sitting in the seat.
●If a cushion is placed on the seat, the
sensor may not detect a passenger, and the warning light may not operate properly.
■Electric power steering system
warning light (warning buzzer)
When the 12-volt battery charge becomes insufficient or the voltage tem-
porarily drops, the electric power steer- ing system warning light may come on and the warning buzzer may sound.
■When the tire pressure warning
light comes on
Inspect the tires to check if a tire is
punctured.
If a tire is punctured: P.528
If none of the tires are punctured:
Turn the power switch off then turn it to ON. Check if the tire pressure warning light comes on or blinks.
If the tire pressure warning light blinks for approximately 1 minute then stays on
There may be a malfunction in the tire pressure warning system. Have the vehicle inspected by any authorized
Toyota retailer or Toyota authorized repairer, or any reliable repairer immedi-ately.
If the tire pressure warning light comes on
1 After the temperature of the tires has lowered sufficiently, check the infla-
tion pressure of each tire and adjust them to the specified level.
2 If the warning light does not turn off even after several minutes have
elapsed, check that the inflation pressure of each tire is at the speci-fied level and perform the tire infla-
tion pressure setting procedure. ( P.480)
If the warning light does not turn off
Warning lightDetails/Actions
(Flashes)
It is possible that the parking brake is not fully engaged or
released
 Operate the parking brake switch once again.
This light comes on when the parking brake is not released. If the
light turns off after the parking brake is fully released, the system is
operating normally.
Warning lightDetails/Actions
(Flashes)
Indicates a malfunction in the brake hold system
 Have the vehicle inspected by any authorized Toyota
retailer or Toyota authorized repairer, or any reliable
repairer immediately.

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8-2. Steps to take in an emergency
When trouble arises
■Warning messages
The warning messages explained below
may differ from the actual messages according to operation conditions and vehicle specifications.
■Warning buzzer
In some cases, the buzzer may not be heard due to being in a noisy location or audio sound.
■If “EV system stopped Steering
power low” is displayed
This message is displayed if the EV sys- tem is stopped while driving.
When steering wheel operations are
heavier than usual, grip the steering
wheel firmly and operate it using more force than usual.
■If “EV system overheated Output power reduced” is displayed
This message may be displayed when driving under severe operating condi-tions. (For example, when driving up a
long steep hill.) Handling method: P. 5 4 9
■If “Shift System Malfunction Shift- ing Unavailable Drive to a Safe
Place and Stop” or “Shift System Malfunction Driving Unavailable” is displayed
There is a malfunction in the shift control system. Have the vehicle inspected by any authorized Toyota retailer or Toyota
authorized repairer, or any reliable repairer immediately.
■If “Shift is in N Release accelerator Before Shifting” is displayed
The accelerator pedal has been depressed when the shift position is in N.
Release the accelerator pedal and shift the shift position to D or R.
■If “Press brake when vehicle is stopped EV system may overheat”
is displayed
The message may be displayed when the accelerator pedal is depressed to
hold the vehicle while the vehicle is stopped on an incline, etc. The EV sys-tem may overheat. Release the acceler-
ator pedal and depress the brake pedal.
■If “Auto Power Off To Conserve Battery” is displayed
Power was turned off due to the auto-
matic power off function. Next time when starting the EV system, operate the EV system for approximately 5 min-
utes to recharge the 12-volt battery.
■If “Regenerative Braking Limited Press Brake to Decelerate” is dis-played
Regenerative braking may be restricted in the following situations. Firmly
If a warning message is
displayed
The multi-information display
shows warnings of system
malfunctions, incorrectly per-
formed operations, and mes-
sages that indicate a need for
maintenance. When a message
is shown, perform the correc-
tion procedure appropriate to
the message.
If a warning message is dis-
played again after the appro-
priate actions have been
performed, contact any autho-
rized Toyota retailer or Toyota
authorized repairer, or any reli-
able repairer.
Additionally, if a warning light
comes on or flashes at the
same time that a warning mes-
sage is displayed, take the
appropriate corrective action
for the warning light. ( P.515)

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8-2. Steps to take in an emergency
depress the brake pedal to decelerate
the vehicle.
●When electrical energy cannot be
regenerated any more as the traction battery is fully charged
●When the temperature of the traction battery is extremely high or extremely low
●When the temperature of the electric motor or power control unit, etc., is
extremely high
■If “High Power Consumption Power to Climate Temporarily Limited” is displayed
Turn off unnecessary electronic equip- ment to reduce power consumption.
Please wait until the power supply
returns to normal.
■If “Headlight System Malfunction Visit Your Dealer” is displayed
The following systems may be malfunc-
tioning. Have the vehicle inspected by any authorized Toyota retailer or Toyota authorized repairer, or any reliable
repairer immediately.
●The LED headlight system
●AHS (Adaptive High-beam System) (if equipped)
●Automatic High Beam (if equipped)
■If “System Malfunction Visit Your Dealer” is displayed
Indicates one of the following systems is disabled.
●PCS (Pre-Collision System)
●LDA (Lane Departure Alert)
●LTA (Lane Tracing Assist)
●AHB (Automatic High Beam) (if equipped)
●AHS (Adaptive High-beam System) (if equipped)
●Dynamic radar cruise control
●Speed limiter (if equipped)
●RSA (Road Sign Assist)
●BSM (Blind Spot Monitor) (if
equipped)
●RCTA (Rear Crossing Traffic Alert) (if equipped)
●FHL (Automatic Rear Flashing Hazard Lights)
●SEA (Safe Exit Assist) (if equipped)
●Toyota parking assist-sensor (if equipped)
●PKSB (Parking Support Brake) (if equipped)
●RCD (Rear Camera Detection) (if equipped)
Have the vehicle inspected by any
authorized Toyota retailer or Toyota
authorized repairer, or any reliable
repairer immediately.
■If “System Stopped See Owner’s
Manual” is displayed
Indicates one of the following systems is disabled.
●PCS (Pre-Collision System)
●LDA (Lane Departure Alert)
●LTA (Lane Tracing Assist)
●AHB (Automatic High Beam) (if equipped)
●AHS (Adaptive High-beam System) (if equipped)
●Dynamic radar cruise control
●Speed limiter (if equipped)
●RSA (Road Sign Assist)
●BSM (Blind Spot Monitor) (if equipped)
●RCTA (Rear Crossing Traffic Alert) (if equipped)
●FHL (Automatic Rear Flashing Hazard Lights)
●SEA (Safe Exit Assist) (if equipped)
●Toyota parking assist-sensor (if equipped)
●PKSB (Parking Support Brake) (if equipped)
●RCD (Rear Camera Detection) (if