air filter TOYOTA SEQUOIA HYBRID 2023 Owners Manual

4TABLE OF CONTENTS
Owners Manual_USA_M0C043_en
Downhill assist control sys-tem .............................. 380
Driving assist systems .. 382
Trailer brake controller .. 388
Trailer Backup Guide .... 391
4-6. Driving tips Hybrid Electric Vehicle driving tips............................... 396
Off-road precautions ..... 398
Winter driving tips ......... 401
5-1. Using the air conditioning
system and defogger
Automatic air conditioning system ......................... 406
Rear automatic air condition- ing system ................... 413
Heated steering wheel/seat heaters/seat ventilators 415
5-2. Using the interior lights Interior lights list ............ 418
5-3. Using the storage features List of storage features . 421
Luggage compartment fea- tures ............................ 425
5-4. Using the other interior fea- tures
Other interior features ... 428
Garage door opener...... 4416-1. Maintenance and care
Cleaning and protecting the vehicle exterior ............ 450
Cleaning and protecting the vehicle interior ............. 453
6-2. Maintenance Maintenance requirements.................................... 456
General maintenance .... 457
Emission inspection and maintenance (I/M) programs.................................... 460
6-3. Do-it-yourself maintenance Do-it-yourself service precau-tions ............................. 462
Hood .............................. 464
Engine compartment ..... 465
12-volt battery................ 471
Tires .............................. 474
Tire inflation pressure .... 484
Wheels .......................... 486
Air conditioning filter ...... 487
Cleaning the hybrid battery (traction battery) air intake
vent and filter ............... 489
Electronic key battery .... 493
Checking and replacing fuses .................................... 495
Light bulbs ..................... 498
5Interior features
6Maintenance and care

811-4. Hybrid system
Owners Manual_USA_M0C043_en
1
For safety and security
There are the air intake vents
both sides of the behind the sec-
ond seat for the purpose of cool-
ing the hybrid battery (traction
battery). If the vents becomes
blocked, the hybrid battery (trac-
tion battery) input and output
may be reduced. When a certain level of impact is
detected by the impact sensor,
the emergency shut off system
blocks the high voltage current
and stops the fuel pump to mini-
mize the risk of electrocution
and fuel leakage. If the emer-
gency shut off system activates,
your vehicle will not restart. To
restart the hybrid system, con-
tact your Toyota dealer.
A message is automatically dis-
played when a malfunction
occurs in the hybrid system or
an improper operation is
attempted.
If a warning message is shown
on the multi-information display,
NOTICE
■Hybrid battery (traction bat-
tery) air intake vents
Do not carry large amounts of
water such as water cooler bottles
in the vehicle. If water spills onto
the hybrid battery (traction bat-
tery), the batte ry may be dam-
aged. Have the vehicle inspected
by your Toyota dealer.
Hybrid battery (traction
battery) air intake vents
NOTICE
■Hybrid battery (traction bat-
tery) air intake vents
●Make sure that the air intake
vents are not blocked, such as
by a seat cover, plastic cover, or
luggage. If the vents are
blocked, the hybrid battery
(traction battery) input and out-
put may be restricted, possibly
leading to a malfunction.
●Clean the air intake vents regu-
larly to prevent the hybrid bat-
tery (traction b attery) from
overheating.
●Do not get water or foreign
materials in the air intake vents
as this may cause a short circuit
and damage the hybrid battery
(traction battery).
●A filter is installed to the air
intake vents. When the filter
remains noticeably dirty even
after cleaning the air intake
vents, filter cleaning or replace-
ment is recommended. Refer to
P.489 for details on how to
clean the filters.
Emergency shut off sys-
tem
Hybrid warning message

4095-1. Using the air conditioning system and defogger
Owners Manual_USA_M0C043_en
5
Interior features
culation throughout the vehicle,
helping to reduce odors that occur
when starting the vehicle.
■Air conditioning filter
 P. 4 8 7
■Air conditioning system refrig-
erant
●A label regarding the refrigerant of
the air conditioning system is
attached to the ho od at the loca-
tion shown in the f ollowing illustra-
tion.
●The meaning of each symbol on
the label are as follows:
■Customization
Some functions can be customized.
(Customizable features: P.579)
1 Operate the “AUTO” switch.
2 Adjust the temperature set-
ting.
3 To stop the operation, press
the “OFF” switch.
If the fan speed setting or air
Caution
Air conditioning sys-
tem
Air conditioning sys-
tem lubricant type
Requires registered
technician to service
air conditioning sys-
tem
Flammable refrigerant
WARNING
■To prevent the windshield
from fogging up
Do not use the windshield defog-
ger switch during cool air opera-
tion in extremely humid weather.
The difference between the tem-
perature of the outside air and
that of the windshield can cause
the outer surface of the wind-
shield to fog up, blocking your
vision.
■When the outside rear view
mirror defoggers are operat-
ing
Do not touch the rear view mirror
surfaces when the outside rear
view mirror def oggers are on.
NOTICE
■To prevent 12-volt battery dis-
charge
Do not leave the air conditioning
system on longer than necessary
when the hybrid system is off.
■When repairing/replacing
parts of the air conditioning
system
Have repair/replacement per-
formed by your Toyota dealer.
When a part of the air conditioning
system, such as the evaporator, is
to be replaced, it must be
replaced with a new one.
Using automatic mode

449
Owners Manual_USA_M0C043_en
6
6
Maintenance and care
Maintenance and care
6-1. Maintenance and careCleaning and protecting the vehicle exterior .......... 450
Cleaning and protecting the vehicle interior ........... 453
6-2. Maintenance Maintenance requirements.................................. 456
General maintenance.. 457
Emission inspection and maintenance (I/M) pro-
grams ........................ 460
6-3. Do-it-yourself mainte- nance
Do-it-yourself service pre- cautions ..................... 462
Hood ........................... 464
Engine compartment ... 465
12-volt battery ............. 471
Tires ............................ 474
Tire inflation pressure.. 484
Wheels ......... ...............486
Air conditioning filter .... 487
Cleaning the hybrid battery (traction battery) air intake
vent and filter............. 489
Electronic key battery.. 493
Checking and replacing fuses.......................... 495
Light bulbs................... 498

4636-3. Do-it-yourself maintenance
Owners Manual_USA_M0C043_en
6
Maintenance and care
Light bulbs
(  P.499)
• Bulb with same
number and
wattage rating as
original
• Phillips-head screwdriver
• Wrench
Radiator and
condenser
(  P.469)

Tire inflation
pressure
( P.484)• Tire pressure
gauge
• Compressed air source
Washer fluid
( P.470)
• Water or washer
fluid containing
antifreeze (for
winter use)
• Funnel (used only for adding
water or washer
fluid)
Hybrid battery
(traction bat-
tery) air intake
vent ( P.489)
Flathead screw
driver
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
●Make sure that the “ACCES-
SORY” or “IGNITION ON” on
the multi-inform ation display
and the “READY” indicator are
both off.
ItemsParts and tools●Keep hands, clothing and tools
away from the moving fan and
engine.
●Be careful not to touch the
engine, inverter, 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
rags, in the engine compart-
ment.
●Do not smoke, cause sparks or
expose an open flame to fuel.
■When working near the elec-
tric cooling fans or radiator
grille
Be sure the power switch is off.
With the power switch in ON, the
electric cooling fans may auto-
matically start to r un if the air con-
ditioning is on an d/or the coolant
temperature is high. ( P.469)
■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.

4876-3. Do-it-yourself maintenance
Owners Manual_USA_M0C043_en
6
Maintenance and care
 Use only Toyota wheel nuts
and wheel nut wrenches
designed for use with your
aluminum wheels.
 When rotating, repairing or
changing your tires, check
that the wheel nuts are still
tight after driving 1000 miles
(1600 km).
 Be careful not to damage the
aluminum wheels when using
tire chains.
 Use only Toyota genuine bal-
ance weights or equivalent
and a plastic or rubber ham-
mer when balancing your
wheels. 1
Turn the power switch off.
2 Open the glove box.
3 Remove the panel.
4 Unlock the filter cover ( ),
pull the filter cover out of the
NOTICE
■Replacing tire pressure warn-
ing valves and transmitters
●Because tire repair or replace-
ment may affect the tire pres-
sure warning valves and
transmitters, make sure to have
tires serviced by your Toyota
dealer or other qualified service
shop. In addition, make sure to
purchase your tire pressure
warning valves and transmit-
ters at your Toyota dealer.
●Ensure that only genuine Toyota
wheels are used on your vehi-
cle.
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 maintain air conditioning
efficiency.
Removing the air condi-
tioning filter

4886-3. Do-it-yourself maintenance
Owners Manual_USA_M0C043_en
claws ( ), and remove the
filter cover.
5 Remove the filter case.
6 Remove the air conditioning
filter from the filter case and
replace it with a new one.
The “ UP” marks shown on the
filter and the filter case should be
pointing up.
■Checking interval
Inspect and replace the air condi-
tioning filter according to the mainte-
nance schedule. In dusty areas or areas with heavy traffic flow, early
replacement may be required. (For
scheduled maintenance information,
please refer to the “Owner’s Manual
Supplement” or “Scheduled Mainte-
nance”.)
■If air flow from the vents
decreases dramatically
The filter may be clogged. Check
the filter and rep lace if necessary.
NOTICE
■When using the air condition-
ing system
Make sure that a filter is always
installed.
Using the air conditioning system
without a filter may cause damage
to the system.
■To prevent damage to the fil-
ter cover
When moving the filter cover in
the direction of arrow to release
the fitting, pay attention not to
apply excessive force to the
claws. Otherwise, the claws may
be damaged.

4896-3. Do-it-yourself maintenance
Owners Manual_USA_M0C043_en
6
Maintenance and care
Remove the dust from the air
intake vents with a vacuum
cleaner, etc.
Make sure to only use a vacuum to
suck out dust and clogs. Attempting
to blow out dust and clogs using an
airgun, etc. may push it into the air
intake vents. ( P.492)
If dust and clogs cannot be com-
pletely removed with the air
intake vent cover installed,
remove the cover and clean the
filter.
1Turn the power switch off.
2 Using a flathead screwdriver,
remove the air intake vent
cover.
3 Vehicles with third seat
(power type): Remove the
Cleaning the hybrid
batter y (traction bat-
ter y) air intake vent
and filter
To prevent the fuel economy
from being affected, visually
inspect the hybrid battery
(traction battery) air intake
vent periodically for dust
and clogs. If it is dusty or
clogged or if “Maintenance
Required for Traction Bat-
tery Cooling Parts See
Owner’s Manual” is dis-
played on the multi-informa-
tion display, clean the air
intake vent using the follow-
ing procedures:
Cleaning the air intake
vents
If dust and clogs cannot
be completely removed

4906-3. Do-it-yourself maintenance
Owners Manual_USA_M0C043_en
third seatback folding/return-
ing switch connector.
4 Remove the air intake vent
filter.
5 Remove the dust and clogs
from the filter using a vacuum
cleaner, etc.
Make sure to also remove the dust
and clogs from the inside of the air
intake vent cover.
6Reinstall the filter to the
cover.
Make sure that the filter is not
crooked or deformed when install-
ing it.
7Vehicles with third seat
(power type): Connect the
third seatback folding/return-
ing switch connector.

4916-3. Do-it-yourself maintenance
Owners Manual_USA_M0C043_en
6
Maintenance and care
8 Install the air intake vent
cover.
1 Insert the cover to engage
the 2 claws.
2 Install the cover as shown in
the illustration.
■Scheduled maintenance of the
air intake vents is necessary
when
In some situations such as when the
vehicle is used frequently or in
heavy traffic or dusty areas, the air
intake vents may need to be
cleaned more regularly. For details,
refer to the “Owner’ s Warranty Infor-
mation Booklet” or “Owner’s Manual
Supplement”.
■Cleaning the air intake vent
●Dust in the air intake vent may
interfere with the cooling of the
hybrid battery (traction battery). If
charging/discharging of the hybrid
battery (traction battery) becomes
limited, the distance that the vehi-
cle can be driven using the electric
motor (traction motor) may be
reduced and the fuel economy
may be reduced.
Inspect and clean the air intake
vent periodically.
●Improper handling of the air intake
vent cover and filt er may result in
damage to them. If you have any
concerns about cleaning the filter,
contact your Toyota dealer.
■If “Maintenance Required for
Traction Battery Cooling Parts
See Owner’s Manual” is dis-
played on the multi-information
display
●If this warning message is dis-
played on the multi-information
display, remove the air intake vent
cover and clean the filter.
(  P.489)
●After cleaning the air intake vent,
start the hybrid system and check
that the warning message is no
longer shown.
It may take approximately 20 min-
utes after the hybrid system is
started until the warning message
disappears. If the warning mes-
sage does not disappear, have the
vehicle inspected by your Toyota
dealer.
WARNING
■When cleaning the air intake
vent
●Do not use water or other liq-
uids to clean the air intake vent.
If water is applied to the hybrid
battery (traction battery) or
other components, a malfunc-
tion or fire may occur.
●Before cleaning the air intake
vent, make sure to turn the
power switch off to stop the
hybrid system.