2022 TOYOTA BZ4X heater

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Owners Manual_Europe_M42D76_en
7-3. Do-it-yourself maintenance
Heater coolant reservoir (P.470)
Washer fluid tank ( P.475)
Power control unit coolant reservoir ( P.472)
12-volt battery ( P.473)
Fuse box ( P.501)
Radiator ( P.471)
Condenser ( P.471)
Electric cooling fan
The coolant level is satisfactory if it
is between the “MAX” and “MIN”
lines on the reservoir when the EV
system is cold.
Motor compartment
Components
Checking the heater coolant

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7-3. Do-it-yourself maintenance
The coolant level is satisfactory if it
is between the “MAX” and “MIN”
lines on the reservoir when the EV
system is cold.
Reservoir cap
“MAX” line
“MIN” line
If the level is on or below the “MIN” line,
add coolant up to the “MAX” line.
■Coolant selection
In order to ensure maximum perfor-
mance of the traction battery cooling system and limit risks of battery short-circuit and other damage to your vehi-
cle, Toyota recommends using “Toyota Genuine Traction Battery Coolant” or
similar high-quality ethylene glycol-
based, low electric conductivity coolant, non-amine and non-borate coolant with azole additives.
Toyota cannot guarantee that the use of a product other than “Toyota Genuine Traction Battery Coolant” will prevent
risks of battery short-circuit or other damage.
Never use water as it will cause dam-
age.
Do not reuse coolant that has been removed from the radiator.
For more details about coolant, contact any authorized Toyota retailer or Toyota authorized repairer, or any reliable
repairer.
■If the coolant level drops within a short time of replenishing
Visually check the hoses, heater coolant
reservoir caps, drain cock and water pump.
If you cannot find a leak, have any
authorized Toyota retailer or Toyota authorized repairer, or any reliable repairer, test the cap and check for leaks
in the cooling system.
WARNING
■When the electric cooling fan is operating
Do not touch the motor compartment.
With the power switch in ON, the electric cooling fan may automatically
start to run if the air conditioning is on and/or the coolant temperature is high. Be sure the power switch is OFF
when working near the electric cool- ing fan or radiator grille.
Checking the power control
unit coolant
WARNING
■When the heater system is hot
Do not remove the heater coolant res-
ervoir caps.
The heater system may be under pressure and may spray hot coolant if
the cap is removed, causing serious injuries, such as burns.

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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.

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Alphabetical Index
Air conditioning filter................... 496
Front seat concentrated airflow
mode (S-FLOW) ...................... 425
Heated Windshield Defroster ..... 426
Remote Air Conditioning System427
“SYNC” mode............................. 423
Automatic door locking and unlock-
ing systems ................................ 188
Automatic headlight leveling system
..................................................... 260
Automatic light control system ... 259
Auxiliary box lights ...................... 431
Auxiliary boxes ............................. 436
Average power consumption ...... 176
Average vehicle speed ................. 178
B
Back door ...................................... 189
Back door opener switch............ 191
Hands Free Power Back Door ... 194
Luggage compartment light 191, 195
Power back door ........................ 192
Power back door opener and closer
switch ....................................... 193
Power back door switch ............. 193
Wireless remote control ..... 183, 192
Back-up lights
Replacing light bulbs .................. 504
Battery (12-volt battery)
If the 12-volt battery is discharged
................................................. 544
Preparing and checking before win-
ter ............................................ 411
Replacing ................................... 547
Warning light .............................. 515
Battery (traction battery)................ 82
Charging ............................ 121, 129
Location ....................................... 82
Specification............................... 556
Traction battery cooler ............... 115
Traction battery heater ............... 114
Warning messages..................... 160
Battery Electric Vehicle driving tips
....................................................... 91
Blind Spot Monitor (BSM) ............324
Enabling/disabling the system.... 325
Bottle holders................................ 436
Brake
Brake Hold ................................. 257
Fluid ........................................... 558
Parking brake .............................254
Regenerative braking ................... 83
Warning light .............................. 515
Brake assist...................................406
Brake Hold ................................. 257
Brake Override System ................ 230
Break-in tips .................................. 230
Brightness control
Instrument panel light control ..... 175
BSM (Blind Spot Monitor) ............324
Enabling/disabling the system.... 325
C
Camera
Driver monitor.....................276, 282
Front camera .............................. 276
Toyota Teammate Advanced Park
................................................. 372
Card holders.................................. 436
Care
Aluminum wheels .......................457
Brake calipers ............................ 457
Exterior ....................................... 456
Interior ........................................459
Seat belts ...................................459
Cargo and luggage .......................235
Cargo hooks .................................. 437
CCID (Charging Circuit Interrupting
Device)......................................... 100
Indicator ..................................... 102
Operation ...................................102
Center console light ..................... 431

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Alphabetical Index
Chains ........................................... 412
Charging ................................ 121, 129
AC charging ............................... 121
AC charging cable........................ 98
Charging components .................. 95
Charging indicator ...................... 102
Charging methods...................... 114
Charging procedure ........... 121, 129
Charging schedule function ....... 134
Charging time may increase ...... 120
Charging tips .............................. 116
DC charging ............................... 129
Display ....... 117, 136, 145, 146, 160
Information related to charging dis-
play .......... 117, 136, 145, 146, 160
Locking and unlocking the AC
charging connector .................. 110
My Room Mode.......................... 145
Opening and closing the charging
port lids ...................................... 96
Power sources precautions........ 113
Power sources that can be used 112
Safety functions ................. 101, 118
Solar charging system ............... 148
Things to know before charging . 118
Warning messages .................... 160
When AC charging cannot be per-
formed ..................................... 152
When charging schedule function
cannot be performed ............... 158
When DC charging cannot be per-
formed ..................................... 155
Charging equipment....................... 95
Charging methods ........................ 114
AC charging ............................... 121
DC charging ............................... 129
Charging ports
Charging port lid........................... 95
Locking and unlocking the AC
charging connector .................. 110
Opening and closing .................... 96
Charging schedule function ........ 134
Setting ........................................136
Charging tips................................. 116
Charging-linked functions
My Room Mode .......................... 114
Traction battery cooler................ 115
Traction battery heater ............... 114
Traction battery warming control 114
Child restraint system ....................49
Child seats definition ....................49
Child seats installation ................. 53
Installing a CRS to a front passenger
seat ............................................ 50
Installing CRS with an ISOFIX lower
anchorage .................................. 62
Installing CRS with seat belts....... 60
Points to remember ...................... 49
Riding with children ...................... 48
Types of child restraint system instal-
lation method ............................. 59
Using a top tether anchorage ....... 63
Child safety .....................................48
12-volt battery precautions ......... 548
Airbag manual on-off system ....... 48
Airbag precautions ....................... 44
Back door precautions ............... 189
Child restraint system................... 49
Electronic sunshade ................... 443
How your child should wear the seat
belt ............................................. 36
Installing child restraints ............... 49
Power window lock switch.......... 221
Power window precautions ........ 220
Rear door child-protectors.......... 188
Riding with children ...................... 48
Seat belt precautions ................... 48
Child-protectors ............................ 188
Cleaning................................. 456, 459
Aluminum wheels .......................457
Brake calipers ............................ 457
Exterior ....................................... 456

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Alphabetical Index
Overheating ............................... 549
Power meter............................... 172
Power switch .............................. 243
Regenerative braking ................... 83
Starting the EV system .............. 243
Extended Headlight Lighting system
..................................................... 260
F
Flat tire .......................................... 528
Tire pressure warning system .... 477
Floor mats ....................................... 32
Fluid
Brake.......................................... 558
Front eAxle................................. 558
Rear eAxle ................................. 558
Washer ....................................... 475
Fog light
Replacing light bulbs .................. 504
Fog lights
Switch ........................................ 268
Footwell lights .............................. 431
Front eAxle
Fluid ........................................... 558
Front electric motor (traction motor)
Specification............................... 555
Front interior lights ...................... 432
Front position lights
Switch ........................................ 259
Front seat center airbag................. 39
Front seat concentrated airflow
mode (S-FLOW) .......................... 425
Front seats .................................... 208
Adjustment ................................. 208
Cleaning ..................................... 459
Correct driving posture................. 33
Driving position memory ............ 222
Head restraints........................... 211
Memory recall function ............... 224
Power easy access system........ 222
Seat heaters............................... 429
Seat position memory ................ 222
Seat ventilators .......................... 429
Front turn signal lights
Replacing light bulbs ..................504
Turn signal lever ......................... 253
Fuses ............................................. 501
G
Gauges........................................... 172
Grip Control...................................404
H
Hands Free Power Back Door ..... 194
Head restraints.............................. 211
Headlight cleaners ........................ 269
Headlights ..................................... 259
AHB (Automatic High Beam)...... 265
AHS (Adaptive High-beam System)
................................................. 262
Extended Headlight Lighting system
................................................. 260
Light switch ................................ 259
Replacing light bulbs ..................504
Heated steering wheel ..................429
ALL AUTO (“ECO”) control ......... 418
Heater system
Capacity ..................................... 557
Heaters
Automatic air conditioning system
................................................. 420
Heated steering wheel ............... 429
Outside rear view mirrors ........... 422
Seat heaters ............................... 429
Traction battery heater ............... 114
Hill-start assist control ................. 406
Hood............................................... 467
Warning message ...................... 188
Hooks
Cargo hooks ............................... 437
Coat hooks ................................. 453

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Owners Manual_Europe_M42D76_en
Alphabetical Index
Power windows
Door lock linked window operation
................................................. 220
Jam protection function .............. 219
Operation ................................... 219
Window lock switch .................... 221
Pre-Collision System (PCS) ......... 283
Enabling/disabling the system ... 293
Function ..................................... 283
Warning light .............................. 520
R
Radar cruise control .................... 316
Radar cruise control (dynamic radar
cruise control) ............................ 307
RCD (Rear Camera Detection) ..... 348
Enabling/disabling the system ... 349
RCTA (Rear Crossing Traffic Alert)
..................................................... 343
Enabling/disabling the system ... 344
Rear Camera Detection (RCD) ..... 348
Enabling/disabling the system ... 349
Rear Crossing Traffic Alert (RCTA)
..................................................... 343
Enabling/disabling the system ... 344
Rear eAxle
Fluid ........................................... 558
Rear electric motor (traction motor)
Specification............................... 556
Rear fog light
Replacing light bulbs .................. 504
Switch ........................................ 268
Rear interior lights ....................... 432
Rear seat
Folding down the rear seatbacks210
Rear seats ..................................... 209
Adjustment ................................. 209
Head restraints........................... 211
Rear turn signal lights
Replacing light bulbs .................. 504
Turn signal lever ........................ 253
Rear view mirror
Inside rear view mirror................ 216
Outside rear view mirrors ........... 217
Rear window defogger ................. 422
Regenerative braking ..................... 83
Warning lights.............................515
Remote Air Conditioning System 427
Replacing
Electronic key battery ................. 499
Fuses ......................................... 501
Light bulbs .................................. 504
Tires ........................................... 488
Replacing the tire.......................... 488
Road Sign Assist (RSA) ............... 304
Roof luggage carrier..................... 235
RSA (Road Sign Assist) ............... 304
S
Safe Exit Assist (SEA)
Enabling/disabling the system.... 330
SEA (Safe Exit Assist) ..................328
Enabling/disabling the system.... 330
Seat belt reminder light ................ 517
Seat belt shoulder anchor height
Adjustment ................................... 37
Seat belts ......................................... 35
Adjusting the seat belt shoulder
anchor height ............................. 37
Child restraint system installation. 49
Cleaning and maintaining the seat
belt ........................................... 459
Emergency Locking Retractor ...... 37
How to wear your seat belt..... 34, 36
How your child should wear the seat
belt ............................................. 36
Pregnant women, proper seat belt
use ............................................. 35
Reminder light and buzzer ......... 517
Seat belt pretensioners ................ 37
SRS warning light.......................516
Seat heaters .................................. 429

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Owners Manual_Europe_M42D76_en
Alphabetical Index
ALL AUTO (“ECO”) control......... 418
Seat position memory .................. 222
Seat ventilators ............................. 429
ALL AUTO (“ECO”) control......... 418
Seats ...................................... 208, 209
Adjustment ......................... 208, 209
Adjustment precautions ............. 209
Child seats/child restraint system
installation .................................. 49
Cleaning ..................................... 459
Driving position memory ............ 222
Folding down the rear seatbacks210
Head restraints........................... 211
Power easy access system........ 222
Properly sitting in the seat............ 33
Seat heaters............................... 429
Seat position memory ................ 222
Seat ventilators .......................... 429
Secondary Collision Brake .......... 406
Sensor
Automatic headlight system ....... 259
BSM (Blind Spot Monitor) .. 325, 329
Dynamic radar cruise control ..... 276
Inside rear view mirror ............... 216
Intrusion sensor ........................... 78
Intrusion sensor and tilt sensor .... 78
LDA (Lane Departure Alert)........ 299
LTA (Lane Tracing Assist) .......... 294
Moving Vehicle Rear of the Vehicle
......................................... 325, 329
PCS (Pre-Collision System) ....... 276
Radar sensor ............................. 276
Rain-sensing windshield wipers . 271
RCTA (Rear Crossing Traffic Alert)
......................................... 325, 329
SEA (Safe Exit Assist) ........ 325, 329
Static Objects Front and Rear of the
Vehicle ..................................... 333
Tilt sensor .................................... 78
Toyota parking assist-sensor ..... 333
Toyota Teammate Advanced Park
................................................. 333
Service plug .................................... 86
Shift lights ..................................... 431
Side airbags .................................... 39
Side doors ..................................... 185
Side mirrors...................................217
Adjustment ................................. 217
BSM (Blind Spot Monitor)........... 324
Folding and extending ................ 218
Heaters....................................... 422
Linked mirror function when revers-
ing ............................................ 218
Mirror position memory .............. 222
Outside rear view mirror defoggers
................................................. 422
RCTA (Rear Crossing Traffic Alert)
................................................. 343
SEA (Safe Exit Assist) ................ 328
Side turn signal lights
Replacing light bulbs ..................504
Turn signal lever ......................... 253
Smart entry & start system .......... 203
Antenna location ........................ 203
Entry functions ................... 185, 191
Starting the EV system............... 243
Snow mode.................................... 401
Snow tires...................................... 411
SOC (State of Charge) gauge ...... 172
Software update ............................ 273
Solar charging system ................. 148
Specifications ............................... 554
Speed Limiter
Warning lights.............................520
Speed limiter ................................. 318
Road Sign Assist (RSA) ............. 320
Speedometer ................................. 172
Steering lock
Column lock release................... 244
Steering lock system warning mes-
sage ......................................... 244
Steering wheel .............................. 215