2022 TOYOTA 4RUNNER maintenance

4526-3. Do-it-yourself maintenance
4RUNNER (U)
■When replacing wheels
The wheels of your vehicle are equipped with tire pressure warning
valves and transmitters that allow the tire pressure warning sy stem to
provide advance warning in the event of a loss in tire inflatio n pressure.
Whenever wheels are replaced, tir e pressure warning valves and trans-
mitters must be installed. ( P. 438)
WARNING
■
When replacing wheels
●Do not use wheels that are a different size from those recommen ded in
the Owner’s Manual, as this may result in a loss of handling control.
●Never use an inner tube in a leaking wheel which is designed fo r a
tubeless tire. Doing so may result in an accident, causing deat h or seri-
ous injury.
■When installing the wheel nuts
Never use oil or grease on the wheel bolts or wheel nuts.
Oil and grease may cause the wheel nuts to be excessively tight ened, lead-
ing to bolt or disc wheel damage. In addition, the oil or greas e can cause the
wheel nuts to loosen and the wheel may fall off, causing an accident and
resulting in death or serious injury. Remove any oil or grease from the wheel
bolts or wheel nuts.
NOTICE
■Replacing tire pressure warning valves and transmitters
●Because tire repair or replacement may affect the tire pressure warn-
ing valves and transmitters, make sure to have tires serviced b y your
Toyota dealer or other qualified service sh op. In addition, make sure to
purchase your tire pressure warning valves and transmitters at your
Toyota dealer.
●Ensure that only genuine Toyota wheels are used on your vehicle .
Tire pressure warning valves and transmitters may not work prop erly
with non-genuine wheels.

4536-3. Do-it-yourself maintenance
6
Maintenance and care
4RUNNER (U)
Turn the engine switch off.
Open the glove box and
remove the cover.
Remove the filter cover.
Remove the air conditioning fil-
ter and replace it with a new
one.
The “UP” marks shown on the fil-
ter should be pointing up.
Air conditioning filter
The air conditioning filter must b e changed regularly to maintain
air conditioning efficiency.
Removal method
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4546-3. Do-it-yourself maintenance
4RUNNER (U)
■Checking interval
Inspect and replace the air conditioning filter according to the maintenance
schedule. In dusty areas or areas with heavy traffic flow, earl y replacement
may be required. (For scheduled maintenance information, please refer to the
“Schedule maintenance guide” or “Owner’s Manual Supplement”.)
■ If air flow from the vents decreases dramatically
The filter may be clogged. Check the filter and replace if nece ssary.
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 da mage to the
system.

4556-3. Do-it-yourself maintenance
6
Maintenance and care
4RUNNER (U)
●Flathead screwdriver
● Small flathead screwdriver
● Lithium battery CR2016 (vehicles without a smart key system), o r
CR2032 (vehicles with a smart key system)
Remove the cover.
To prevent damage to the key,
cover the tip of the screwdriver with
a rag.
Remove the module.
Open the case cover using a
coin protected with tape etc.
and remove the depleted bat-
tery.
Insert a new battery with the “+”
terminal facing up.
Wireless remote control/electronic key
batter y
Replace the battery with a n ew one if it is depleted.
You will need the following items:
Replacing the battery (vehicles without a smart key system)
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4566-3. Do-it-yourself maintenance
4RUNNER (U)
Release the lock and remove
the mechanical key.
Remove the key cover.
To prevent damage to the key,
cover the tip of the flathead screw-
driver with a rag.
Remove the depleted battery
using a small flathead screw-
driver.
When removing the cover, the
electronic key module may stick to
the cover and the battery may not
be visible. In this case, remove the
electronic key module in order to
remove the battery.
Insert a new battery with the “+” terminal facing up.
When installing the key cover and mechanical key, install by con-
ducting and with the directions reversed.
Operate the or switch and check that the doors can
be locked/unlocked.
Replacing the battery (vehic les with a smart key system)
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4576-3. Do-it-yourself maintenance
6
Maintenance and care
4RUNNER (U)
■When replacing the key battery
Be careful not to lose the battery or any other small parts.
■ Use a CR2016 (vehicles without a smart key system) or CR2032 (vehicles
with a smart key system) lithium battery
●Batteries can be purchased at your Toyota dealer, local electrical appliance
shops or camera stores.
● Replace only with the same or equivalent type recommended by the manu-
facturer.
● Dispose of used batteries according to local laws.
■ If the electronic key battery is depleted
The following symptoms may occur:
●The smart key system and wireless remote control will not funct ion properly.
● The operational range will be reduced.
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 wireless remote control/elec-
tronic key. If a battery is swallowed, it may cause severe chem ical burns in
as little as 2 hours and may result in death or serious injury.
● Keep away new and removed batteries from children.
● If the cover cannot be firmly closed, stop using the wireless r emote con-
trol/electronic key and stow the key in the place where childre n cannot
reach, and then contact your Toyota dealer.
● If you accidentally swallow a battery or put a battery into a part of your
body, get emergency medical attention immediately.
■ To prevent battery explosion or leakage of flammable liquid or gas
● Replace the battery with a new battery of the same type. If a w rong type of
battery is used, it may explode.
● Do not expose batteries to extremely low pressure due to high altitude or
extremely high temperatures.
● Do not burn, break or cut a battery.

4586-3. Do-it-yourself maintenance
4RUNNER (U)
NOTICE
■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 cont rol.
● Do not bend either of the battery terminals.

4596-3. Do-it-yourself maintenance
6
Maintenance and care
4RUNNER (U)
Turn the engine switch off.
Open the Fuse box cover.
Engine compartment
Push the tab in and lift the lid off.
Driver’s side instrument panel
Remove the lid.
Remove the fuse with the pull-
out tool.
Only type A fuse can be removed
using the pullout tool.
Checking and replacing fuses
If any of the electrical components do not operate, a fuse may
have blown. If this happens, che ck and replace the fuses as nec-
essary.
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