2022 TOYOTA BZ4X air conditioning

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7
Maintenance and care
Maintenance and care
7-1. Maintenance and care
Cleaning and protecting the
vehicle exterior ............... 456
Cleaning and protecting the
vehicle interior ................ 459
7-2. Maintenance
Maintenance requirements 463
7-3. Do-it-yourself maintenance
Do-it-yourself service precau-
tions ................................ 465
Hood ................................. 467
Positioning a floor jack...... 468
Motor compartment .......... 470
Tires .................................. 476
Replacing the tire.............. 488
Tire inflation pressure ....... 494
Wheels.............................. 495
Air conditioning filter ......... 496
Electronic key battery ....... 499
Checking and replacing fuses
....................................... 501
Light bulbs ........................ 504

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7-1. Maintenance and care
Maintenance and care
Remove dirt and dust using a
vacuum cleaner. Wipe dirty sur-
faces with a cloth dampened with
lukewarm water.
 If dirt cannot be removed, wipe it
off with a soft cloth dampened
with neutral detergent diluted to
approximately 1%.
Wring out any excess water from
the cloth and thoroughly wipe off
remaining traces of detergent
and water.
■Shampooing the carpets
There are several commercial foaming-
type cleaners available. Use a sponge or brush to apply the foam. Rub in over-lapping circles. Do not use water. Wipe
dirty surfaces and let them dry. Excellent results are obtained by keeping the car-pet as dry as possible.
■Handling the seat belts
Clean with mild soap and lukewarm water using a cloth or sponge. Also check the belts periodically for exces-
sive wear, fraying or cuts.
■Front side windows with IR protec- tive coating (vehicles with IR pro-tective coating)
The front side windows have IR protec- tive coating. To prevent any damage to the IR protective coating, observe the
NOTICE
●Keep the cleaning nozzle at least 30 cm (11.9 in.) away from the vehi-
cle body. Otherwise resin section, such as moldings and bumpers, may be deformed and damaged.
Also, do not continuously hold the nozzle in the same place.
●Do not spray the lower part of the windshield continuously. If water enters the air conditioning
system intake located near the lower part of the windshield, the air conditioning system may not oper-
ate correctly.
●Do not wash the underside of the
vehicle using a high pressure car washer. If water enters the traction battery, the EV system may mal-
function.
●Do not use the washer on the area
around the charging port lid. Water could get into the charging inlet and could damage the vehicle.
■Cleaning aluminum parts
When cleaning the hood, do not push
hard or put weight on it. The aluminum part may be dented.
Cleaning and protecting
the vehicle interior
Perform cleaning in a manner
appropriate to each compo-
nent and its material.
Protecting the vehicle inte-
rior

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7-3. Do-it-yourself maintenance
WARNING
The motor compartment contains many mechanisms and fluids that
may move suddenly, become hot, or become electrically energized. To avoid death or serious injury, observe
the following precautions.
■When working on the motor com-
partment
●Make sure that “POWER ON” on the multi-information display and
the “READY” indicator are both off.
●Keep hands, clothing and tools
away from the moving fan.
●Be careful not to touch the motor,
power control unit, radiator, etc., right after driving as they may be hot. Coolant and other fluids may
also be hot.
●Do not leave anything that may
burn easily, such as paper and rags, in the motor compartment.
●Do not smoke, cause sparks or expose an open flame to the 12-volt battery. 12-volt battery fumes are
flammable.
●Be extremely cautious when work-
ing on the 12-volt battery. It con- tains poisonous and corrosive sulfuric acid.
●Never touch, disassemble, remove or replace the high voltage parts,
cables and their connectors. It can cause severe burns or electric shock that may result in death or
serious injury.
●Take care because brake fluid can
harm your hands or eyes and dam- age painted surfaces. If fluid gets on your hands or in your eyes, flush
the affected area with clean water immediately. If you still experience discomfort, consult a doctor.
■When working near the electric cooling fan or radiator grille
Be sure the power switch is OFF.
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. ( P.471)
■Safety glasses
Wear safety glasses to prevent flying or falling material, fluid spray, etc.,
from getting in your eyes.
NOTICE
■If the fluid level is low or high
It is normal for the brake fluid level to
go down slightly as the brake pads wear or when the fluid level in the accumulator is high.
If the reservoir needs frequent refill- ing, it may indicate a serious problem.

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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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7-3. Do-it-yourself maintenance
Use only Toyota wheel bolts and
wrenches designed for use with
your aluminum wheels.
 When rotating, repairing or
changing your tires, check that
the wheel bolts are still tight after
driving 1600 km (1000 miles).
 Be careful not to damage the
aluminum wheels when using
tire chains.
 Use only Toyota genuine balance
weights or equivalent and a plas-
tic or rubber hammer when bal-
ancing your wheels.
1 Turn 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 front passenger’s
door.
By keeping the door open, unexpected operation of the Remote Air Condition-
ing System can be prevent. ( P.427)
3While pressing the claw, hold
handle and remove the
panel.
NOTICE
■Replacing tire pressure warning valves and transmitters
●Because tire repair or replacement may affect the tire pressure warning valves and transmitters, make sure
to have tires serviced by any autho- rized Toyota retailer or Toyota authorized repairer, or any reliable
repairer or other qualified service shop. In addition, make sure to pur-chase your tire pressure warning
valves and transmitters at any authorized Toyota retailer or Toyota authorized repairer, or any reliable
repairer.
●Ensure that only genuine Toyota
wheels are used on your vehicle. Tire pressure warning valves and transmitters may not work properly
with non-genuine wheels.
Aluminum wheel precau-
tions
Air conditioning filter
The air conditioning filter must
be changed regularly to main-
tain air conditioning efficiency.
Removing the air condition-
ing filter

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7-3. Do-it-yourself maintenance
Maintenance and care
4Vehicles with Footwell lights:
Unplug the connector.
5 Unlock the filter cover ( ), pull
the filter cover out of the claws
( ), and remove the filter
cover.
6 Hold the filter case and
remove the lower filter case.
7 Hold the filter case and pull
down the upper filter case.
8 Hold the filter case and
remove the upper filter case.
9 Remove the air conditioning fil-
ter from the upper and lower fil-

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7-3. Do-it-yourself maintenance
ter case and replace it with a
new one.
Install so that the arrow points to the rear of the vehicle.
10 When installing, reverse the
steps listed.
■When installing the filter cover
Slide the recessed part of the filter
cover on the upper surface of the upper
filter case as shown in the figure,
and attach it so that it is lifted toward the
insertion part of the cover attachment.
Left-hand drive vehicles
Right-hand drive vehicles
■Checking interval
Inspect and replace the air conditioning
filter according to the maintenance
schedule. In dusty areas or areas with heavy traffic flow, early replacement may be required. (For scheduled main-
tenance information, please refer to the “Toyota Service Booklet” or “Toyota War-ranty Booklet”.)
■If air flow from the vents decreases
dramatically
The filter may be clogged. Check the fil- ter and replace if necessary.
WARNING
■When replacing the air condition-ing filter
Observe the following precautions.
Failure to do so may result in the air conditioning system operating during the procedure, possibly resulting in
injury.
●Check that the charging connector is not connected
●Do not use the Remote Air Condi-tioning System
NOTICE
■When using the air conditioning
system
●Make sure that a filter is always installed.
Using the air conditioning system without a filter may cause damage to the system.
●The filter is replaceable. When cleaning the filter, do not clean with
water or an air gun.

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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