2022 TOYOTA BZ4X overheating

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2-2. Charging
Electric Vehicle system
The “Charging Settings” screen will be
displayed.
4 Press or of the meter control
switches to select “Charging Limit”,
and then press .
The “Charging Limit” screen will be dis- played.
5 Select “Full”, “90%”, “80%”, “70%”,
“60%” or “50%” and then press .
●Setting operations on multimedia
1 Select .
2 Select “Vehicle customize”.
3 Select “Charging”.
4 Select “Charging limit”.
5 Select “Full”, “90%”, “80%”, “70%”, “60%” or “50%”.
If the setting is changed during DC charging, charging may stop due to the operation of the DC charger timer and
the traction battery cannot be fully charged.
■Protection function of AC charging inlet overheating
By installing a temperature sensor to the AC charging inlet, prevents parts from melting when the temperature rises due
to foreign matter entering the charging connector.
When a certain temperature increase is
detected, charging is stopped immedi- ately.
After this, when the power switch is off,
a message will be displayed on the multi-information display ( P.160)
WARNING
■When charging
Observe the following precautions.
Failure to do so may cause an unex- pected accident, resulting in death or serious injury.
●Connect to a power source suitable for charging. ( P.112)
●Check that the AC charging cable, plug and socket are free of foreign matter.
●Before charging, check that the AC charging inlet is not deformed,
damaged or corroded, and check that the inlet is free of foreign mat-ter such as dirt, snow and ice.
If there is dirt or dust in these areas, remove completely before inserting the charging connector.
●Before inserting the charging plug into the charger, make sure there is
no dirt or dust on the terminal areas. If there is dirt or dust in these areas, remove completely before
inserting the charging plug.
●Do not get the terminals of the AC
charging inlet wet.
●Only use sockets where the plug
can be securely inserted.
●Do not bundle or wind the AC
charging cable while charging, as doing so may result in overheating.
●Do not touch the terminals of the charging connector and AC charging inlet with a sharp metal
objects (needles, etc.,) or hands, or short them with foreign objects.

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5-1. Before driving
Driving
is especially true when driving on
wet or slippery road surfaces.
■Sudden acceleration/steering
input/cornering
Executing sharp turns when towing
may result in the trailer colliding
with your vehicle. Decelerate well in
advance when approaching turns
and take them slowly and carefully
to avoid sudden braking.
■Important points regarding
turning
The wheels of the trailer will travel
closer to the inside of the curve
than the wheels of the vehicle. To
make allowance for this, take the
turns wider than you would nor-
mally do.
■Important points regarding
stability
Vehicle movement resulting from
uneven road surfaces and strong
crosswinds will affect handling. The
vehicle may also be rocked by
passing buses or large trucks. Fre-
quently check behind when moving
alongside such vehicles. As soon
as such vehicle movement occurs,
immediately start to decelerate
smoothly by slowly applying the
brakes. Always steer the vehicle
straight ahead while braking.
■Passing other vehicles
Consider the total combined length
of your vehicle and trailer and
ensure that the vehicle-to-vehicle
distance is sufficient before execut-
ing lane changes.
■If the EV system overheats
Towing a loaded trailer up a long,
steep incline in temperatures
exceeding 30°C (85°F) may result
in the EV system overheating. If the
EV system coolant temperature
gauge indicates that the EV system
is overheating, turn the air condi-
tioning off immediately, leave the
road and stop the vehicle in a safe
place. ( P.549)
■When parking the vehicle
Always place wheel chocks under
the wheels of both the vehicle and
trailer. Firmly set the parking brake
and shift the shift position to P.
WARNING
F o l l o w a l l t h e i n s t r u c t i o n s d e s c r i b e d i n this section. Failure to do so could cause an accident resulting in death
or serious injury.
■Trailer towing precautions
When towing, make sure that none of the weight limits are exceeded. ( P.554)
■Vehicle speed in towing
Observe the legal maximum speeds
for trailer towing.
■Before descending hills or long
declines
Reduce speed and downshift. How- ever, never downshift suddenly while
descending steep or long downhill grades.

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5-1. Before driving
WARNING
■Operation of the brake pedal
Do not hold the brake pedal
depressed often or for long periods of time. Doing so may result in the brake overheating or reduce braking effects.
■To avoid accident or injury
●Do not tow a trailer when the tire
installed is repaired with the emer- gency tire puncture repair kit.
●Do not use the following systems when trailer towing.
• PCS (Pre-Collision System)
• LTA (Lane Tracing Assist)
• LDA (Lane Departure Alert)
• Dynamic radar cruise control
• Cruise control
• BSM (Blind Spot Monitor)

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5-2. Driving procedures
mechanical key, the EV system can-
not be started using the smart entry & start system. However, if the elec-tronic key is carried inside the vehicle
and the doors are locked ( P.188), the EV system can be started.
■When the ambient temperature is low, such as during winter driving
conditions
●When starting the EV system, the
flashing time of the “READY” indicator may be long. Leave the vehicle as it is until the “READY” indicator is steady
on, as steady means the vehicle is able to move.
●When the traction battery is extremely cold (below approximately -30°C [-22°F]) under the influence of the out-
side temperature, it may not be possi- ble to start the EV system. In this case, try to start the EV system again
after the temperature of the traction battery increases due to the outside temperature increase, etc.
■Sounds and vibrations specific to
an battery electric vehicle
 P. 8 4
■If the 12-volt battery is discharged
The EV system cannot be started using
the smart entry & start system. Refer to P.544 to restart the EV system.
■Electronic key battery depletion
 P. 1 8 2
■Conditions affecting operation
 P. 2 0 4
■Note for the entry function
 P. 2 0 5
■Steering lock function (if equipped)
●After turning the power switch off and opening and closing the doors, the steering wheel will be locked due to
the steering lock function. Operating the power switch again automatically cancels the steering lock.
●When the steering lock cannot be released, “Push Power Switch while
Turning the Steering Wheel in Either
Direction” will be displayed on the multi-information display.Check that the shift position is in P.
Press the power switch shortly and firmly while turning the steering wheel left and right.
●To prevent the steering lock motor from overheating, operation of the
motor may be suspended if the EV system is turned on and off repeatedly in a short period of time. In this case,
refrain from operating the EV system. After about 10 seconds, the steering lock motor will resume functioning.
■If the “READY” indicator does not
come on
In the event that the “READY” indicator does not come on even after performing
the proper procedures for starting the vehicle, contact any authorized Toyota retailer or Toyota authorized repairer, or
any reliable repairer immediately.
■If the EV system is malfunctioning
 P. 9 0
■Electronic key battery
 P. 4 9 9
■Operation of the power switch
●If the switch is not pressed shortly and firmly, the power switch mode may not
change or the EV system may not start.
●If attempting to restart the EV system immediately after turning the power switch off, the EV system may not
start in some cases. After turning the power switch off, please wait a few seconds before restarting the EV sys-
tem.

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5-2. Driving procedures
Driving
ing brake manually. (P.254)
■Turning the automatic mode
off
While the vehicle is stopped and
depressing the brake pedal, press
and hold the parking brake switch
until a buzzer sounds and message
is shown on the multi-information
display.
■Parking brake operation
●When the power switch is not in ON, the parking brake cannot be released using the parking brake switch.
●When the power switch is not in ON, automatic mode (automatic brake set-
ting and releasing) is not available.
■Parking brake automatic release function
When all of the following conditions are
met in manual mode, the parking brake can be released by depressing the accelerator pedal.
●The driver’s door is closed
●The driver is wearing the seat belt
●The shift position is in a forward driv-
ing position or reverse driving position
●The malfunction indicator lamp or brake system warning light is not illu-minated.
When depressing the accelerator pedal, depress it slowly.
If the parking brake is not released when
the accelerator pedal is depressed, release the parking brake manually.
■Parking brake automatic lock func-tion
The parking brake will be set automati- cally under the following conditions:
●The brake pedal is not depressed
●The driver’s door is open
●The driver’s seat belt is not fastened
●The shift position is in a position other
than P or N (The shift position is in P during advanced park operation.) (If
equipped)
●The malfunction indicator lamp or
brake system warning light are not illuminated
■If “Parking Brake Temporarily Unavailable” is displayed on the
multi-information display
If the parking brake is operated repeat- edly over a short period of time, the sys-
tem may restrict operation to prevent overheating. If this happens, refrain from operating the parking brake. Normal
operation will return after about 1 min- ute.
■If “Parking Brake Unavailable” is displayed on the multi-information
display
Operate the parking brake switch. If the message does not disappear after oper-
ating the switch several times, the sys- tem may be malfunctioning. Have the vehicle inspected by any authorized
Toyota retailer or Toyota authorized repairer, or any reliable repairer.
■Parking brake operation sound
When the parking brake operates, a
motor sound (whirring sound) may be heard.
This does not indicate a malfunction.
■Parking brake indicator light
●Depending on the power switch mode, the parking brake indicator light will
turn on and stay on as described below:ON: Comes on until the parking brake
is released. Not in ON: Stays on for approximately 15 seconds.
●When the power switch is turned off with the parking brake set, the parking
brake indicator light will stay on for about 15 seconds.This does not indicate a malfunction.

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5-2. Driving procedures
■When the parking brake switch
malfunctions
Automatic mode (automatic brake set- ting and releasing) will be turned on
automatically.
■Parking the vehicle
 P. 2 5 4
■Parking brake engaged warning buzzer
A buzzer will sound if the vehicle is driven with the parking brake engaged. “Parking Brake ON” is displayed on the
multi-information display. (with the vehi- cle reached a speed of 5 km/h [3 mph])
■If the brake system warning light comes on
 P. 5 1 5
■Usage in winter time
 P. 2 4 1
WARNING
■When parking the vehicle
Do not leave a child in the vehicle alone. The parking brake may be released unintentionally and there is
the danger of the vehicle moving that may lead to an accident resulting in death or serious injury.
■Parking brake switch
Do not set any objects near the park-
ing brake switch. Objects may interfere with the switch and may lead the parking brake to
unexpectedly operate.
■Parking brake automatic lock function
Never use the automatic parking
brake engagement function in place of normal parking brake operation. This function is designed to reduce
the risk of a collision due to the driver forgetting to engage the parking brake. Over-reliance on this function
to park the vehicle safely may lead to an accident resulting in death or seri-ous injury. ( P.229)
NOTICE
■When parking the vehicle
Before you leave the vehicle, shift the shift position to P, set the parking
brake and make sure that the vehicle does not move.
■When the system malfunctions
Stop the vehicle in a safe place and check the warning messages.
■When the vehicle 12-volt battery is discharged
The parking brake system cannot be activated. ( P.544)
■When the parking brake cannot be released due to a malfunction
Driving the vehicle with the parking
brake set will lead to brake compo- nents overheating, which may affect braking performance and increase
brake wear.
Have the vehicle inspected by any authorized Toyota retailer or Toyota
authorized repairer, or any reliable repairer immediately if this occurs.

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5-4. Using the driving support systems
●The accelerator pedal is depressed
●The parking brake is engaged
●2 seconds at maximum elapsed after the brake pedal is released
●Power switch is turned to OFF
■Sounds and vibrations caused by the ABS, brake assist, VSC, Trailer Sway Control, TRC and hill-start
assist control systems
●A sound may be heard from the motor
compartment when the brake pedal is depressed repeatedly, when the EV system is started or just after the vehi-
cle begins to move. This sound does not indicate that a malfunction has occurred in any of these systems.
●Any of the following conditions may occur when the above systems are
operating. None of these indicates that a malfunction has occurred.• Vibrations may be felt through the
vehicle body and steering. • A motor sound may be heard also after the vehicle comes to a stop.
■ECB operating sound
ECB operating sound may be heard in the following cases, but it does not indi-cate that a malfunction has occurred.
●Operating sound heard from the motor compartment when the brake pedal is
operated.
●Operating sound heard from the motor
compartment when one or two min- utes passed after the stop of the EV system.
■Active Cornering Assist operation
sounds and vibrations
When Active Cornering Assist is oper- ated, operation sounds and vibrations
may be generated from the brake sys- tem, but this is not a malfunction.
■EPS operation sound
When the steering wheel is operated, a
motor sound (whirring sound) may be heard. This does not indicate a malfunc-tion.
■Automatic reactivation of TRC,
Trailer Sway Control and VSC sys- tems
After turning the TRC, Trailer Sway Con-
trol and VSC systems off, the systems will be automatically re-enabled in the following situations:
●When the power switch is turned off
●If only the TRC system is turned off, the TRC will turn on when vehicle speed increases. If both the TRC and
VSC systems are turned off, auto- matic re-enabling will not occur when vehicle speed increases.
■Operating conditions of Active Cor-
nering Assist
The system operates when the following occurs.
●TRC/VSC can operate
●The driver is attempting to accelerate while turning
●The system detects that the vehicle is drifting to the outer side
●The brake pedal is released
■Reduced effectiveness of the EPS system
The effectiveness of the EPS system is
reduced to prevent the system from overheating when there is frequent steering input over an extended period
of time. The steering wheel may feel heavy as a result. Should this occur, refrain from excessive steering input or
stop the vehicle and turn the EV system off. The EPS system should return to normal within 10 minutes.
■Operating conditions of emergency
brake signal
When the following conditions are met, the emergency brake signal will operate:
●The emergency flashers are off.
●Actual vehicle speed is over 55 km/h (35 mph).
●The system judges from the vehicle deceleration that it is a sudden brak-ing operation.

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6-1. Using the air conditioning system and defogger
The AUTO indicator and/or level
indicator illuminates during opera-
tion.
■Rear (outboard rear seats)
Each time the switch is pressed,
the operation condition changes as
follows.
Hi (3 segments lit)  Mid (2 seg-
ments lit)  Lo (1 segment lit) 
Off
When not in use, put the switch in
the neutral position. The indicator
will turn off.
■The seat heaters can be used when
The power switch is in ON.
Turns the seat ventilators on/off
Each time the switch is pressed, the
operation condition changes as follows.
AUTO (lit)  Hi (3 segments lit)  Mid
(2 segments lit)  Lo (1 segment lit) 
Off
The AUTO indicator and/or level
indicator illuminates during opera-
tion.
■The seat ventilators can be used when
The power switch is in ON.
■Air conditioning system-linked control mode
When the seat ventilator fan speed level
is Hi, the seat ventilator fan speed becomes higher according to the fan speed of the air conditioning system.
WARNING
■To prevent causes of overheating and minor burn injuries
Observe the following precautions when using a seat heater
●Do not cover the seat with a blanket
or cushion when using the seat heater.
●Do not use seat heater more than necessary.
Seat ventilators (front seats)