2023 TOYOTA 4RUNNER air filter

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4RUNNER (U)6-1. Maintenance and care
Cleaning and protecting the vehicle exterior .......... 396
Cleaning and protecting the vehicle interior ........... 400
6-2. Maintenance Maintenance requirements ................... 403
General maintenance ........ 405
Emission inspection and maintenance (I/M)
programs ......................... 408
6-3. Do-it-yourself maintenance
Do-it-yourself service precautions ..................... 409
Hood.................................. 412
Engine compartment ......... 413
Tires .................................. 427
Tire inflation pressure........ 440
Wheels .............................. 443
Air conditioning filter .......... 445
Electronic key battery ........ 447
Checking and replacing fuses ............................... 450
Light bulbs ......................... 453 7-1. Essential information
Emergency flashers ........... 466
If your vehicle has to be stopped in
an emergency.................. 467
If the vehicle is submerged or water
on the road is rising ......... 468
7-2. Steps to take in an emergency
If your vehicle needs to be towed ...................... 469
If you think something is wrong ........................... 475
Fuel pump shut off system ............................. 476
If a warning light turns on or a warning
buzzer sounds ................. 477
If a warning message is displayed...................... 488
If you have a flat tire .......... 493
If the engine will not start ................................. 509
If you cannot operate back door opener ............ 511
If the electronic key does not operate
properly ........................... 512
If the vehicle battery is discharged ................... 515
If your vehicle overheats......................... 519
If the vehicle becomes stuck ................................ 522
6Maintenance and care7When trouble arises

3555-1. Using the air conditioning system and defogger
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Interior features
4RUNNER (U)■
Ventilation and air conditioning odors
●To let fresh air in, set the air conditioning system to the out side air mode.
● During use, various odors from inside and outside the vehicle m ay enter into
and accumulate in the air conditioning system. This may then ca use odor to
be emitted from the vents.
● To reduce potential odors from occurring:
• It is recommended that the air conditioning system be set to o utside air
mode prior to turning the vehicle off.
• The start timing of the blower may be delayed for a short peri od of time
immediately after the air conditioning system is started in aut omatic
mode.
■ Air conditioning filter
P. 445
■ Air conditioning system refrigerant
●The meaning of each symbol on the label are as follows:
●
A label regarding the refrigerant of the
air conditioning system is attached to the
hood at the location shown in the follow-
ing illustration.
Caution
Air conditioning system
Air conditioning system lubricant type
Requires registered technician to service air conditioning
system
Flammable refrigerant

395
Maintenance and care6
4RUNNER (U)6-1. Maintenance and care
Cleaning and protecting the vehicle exterior .......... 396
Cleaning and protecting the vehicle interior ........... 400
6-2. Maintenance Maintenance requirements ................... 403
General maintenance........ 405
Emission inspection and maintenance (I/M)
programs......................... 408
6-3. Do-it-yourself maintenance
Do-it-yourself service precautions ..................... 409
Hood ................................. 412
Engine compartment ......... 413
Tires .................................. 427
Tire inflation pressure ....... 440
Wheels .............................. 443
Air conditioning filter.......... 445
Electronic key battery........ 447
Checking and replacing fuses ............................... 450
Light bulbs......................... 453

4116-3. Do-it-yourself maintenance
6
Maintenance and care
4RUNNER (U)
WARNING
The engine 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 engine compartment
● Keep hands, clothing and tools away from the moving fan and engine
drive belt.
● Be careful not to touch the engine, radiator, exhaust manifold, etc. right
after driving as they may be hot. Oil and other fluids may also be hot.
● Do not leave anything that may burn easily, such as paper and r ags, in the
engine compartment.
● Do not smoke, cause sparks or expose an open flame to fuel or t he bat-
tery. Fuel and battery fumes are flammable.
● Be extremely cautious when working on the battery. It contains poisonous
and corrosive sulfuric acid.
■ Safety glasses
Wear safety glasses to prevent flying or falling material, fluid spray, etc.
from getting in your eyes.
NOTICE
■If you remove the air cleaner filter
Driving with the air cleaner filter removed may cause excessive engine wear
due to dirt in the air.

4456-3. 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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4466-3. 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.

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4RUNNER (U)
Alphabetical index
Alphabetical index
A/C .................................... 342, 349Air conditioning filter ............. 445
ABS (Anti-lock Brake System)...... 322
Function ................................ 322
Warning light ......................... 478
Active head restraints ............. 130
Active traction control ............ 302
Air conditioning filter .............. 445
Air conditioning
system ............................ 342, 349 Air conditioning filter ............. 445
Airbags ....................................... 37
Airbag operating conditions .... 44
Airbag precautions for your child ......................... 39
Airbag warning light .............. 478
Correct driving posture ........... 30
Curtain shield airbag operating conditions ............. 44
Curtain shield airbag precautions ........................... 41
Front passenger occupant classification syst em............. 48
General airbag precautions .... 39
Locations of airbags................ 37
Modification and disposal of airbags.............................. 43
Side airbag operating
conditions ............................. 44
Side airbag precautions .......... 39
Side and curtain shield airbags operating conditions ............. 44
Side and curtain shield airbags precautions .............. 39
SRS airbags............................ 37 Alarm .......................................... 79
Alarm ...................................... 79
Warning buzzer .................... 477
Anchor brackets ........................ 59
Antennas (smart key system) ............... 113
Anti-lock Brake System (ABS) ...................................... 322
Function ................................ 322
Warning light......................... 478
Armrest..................................... 386
Assist grip ................................ 386
Audio system
*
AUTO LSD system................... 304
Automatic air conditioning
system.................................... 349
Automatic High Beam ............. 217
Automatic light control
system.................................... 212
Automatic running boards ..... 121
Automatic transmission ......... 205
If the shift lever cannot be shifted from P .... 208
S mode ................................. 206
AUX port
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Auxiliary boxes ........................ 367
A