2023 TOYOTA TUNDRA HYBRID battery

4325-4. Using the other interior features
Owners Manual_USA_M0C052_en
■To prevent 12-volt battery dis-
charge
If the vanity light s remain on when
the power switch is turned off, the
lights will go off automatically after
20 minutes.
Pull up the tab of the sunshade
and hook the shade on using
the anchors.
To retract the sunshade, unhook
the sunshade and re tract it slowly.
NOTICE
■To prevent the 12-volt battery
from being discharged
Do not leave the vanity lights on
for extended periods while the
hybrid system is off.
Rear door sunshades (if
equipped)
NOTICE
■To ensure normal operation
of the sunshades
Observe the following precau-
tions:
●Do not place anything where it
may hinder the opening/closing
of the rear door sunshades.
●Do not attach ite ms to the rear
door sunshades.
●Do not apply excessive load to
the rear door sunshades while
they are hanging from the
hooks.
●Do not operate t he rear door
sunshade while the rear door is
opening/closing.
●Do not store the rear door sun-
shade in a tilted position. If
stored in a tilted position, the
rear door sunshade screen may
become creased.
■To prevent damage to the rear
door sunshade
Observe the following precau-
tions:
●Do not use the rear door sun-
shade when either hook is
detached. When the rear door is
opened/closed, the rear door
sunshade may be damaged.
●Do not pull on t he screen while
the hooks are attached. The
screen may be damaged.

4345-4. Using the other interior features
Owners Manual_USA_M0C052_enAppears while HomeLink
® is oper-
ating. When the menu button
(  P.146) is pressed, the logo dis-
appears even while the HomeLink
®
is operating.
Setting icon
Press the menu button to change
the setting.
Menu buttons
HomeLink
® buttons
■Codes stored in the Home-
Link® memory
●The registered codes are not
erased even if the 12-volt battery
cable is disconnected.
●If learning failed when registering
a different code to a HomeLink®
button that already has a code
registered to it, the already regis-
tered code will not be erased.
■Certification
 P. 6 1 7
■Before programming Home-
Link
®
 During programming, it is pos-
sible that garage doors,
gates, or other devices may
operate. For this reason,
make sure that people and
objects are clear of the
garage door or other devices
to prevent injury or other
potential harm.
 It is recommended that a new
battery be placed in the
remote control transmitter for
more accurate programming.
 Garage door opener motors
manufactured after 1995 may
be equipped with rolling code
protection. If this is the case,
WARNING
■When programming a garage
door or other remote control
device
The garage door o r other device
may operate, so ensure people
and objects are out of danger to
prevent potential harm.
■Conforming to federal safety
standards
Do not use the HomeLink
® com-
patible transce iver with any
garage door opener or device that
lacks safety stop and reverse fea-
tures as required by federal safety
standards.
This includes any garage door
that cannot detect an interfering
object. A door or device without
these features increases the risk
of death or serious injury.
■When operating or program-
ming HomeLink®
Never allow a child to operate or
play with the HomeLink® buttons.
Programming the Home-
Link
®

4385-4. Using the other interior features
Owners Manual_USA_M0C052_en
Link® indicator to start flash-
ing).
■Before programming
●Install a new battery in the trans-
mitter.
●The battery side of the transmitter
must be pointed away from the
HomeLink
® buttons.
Press the appropriate Home-
Link
® button. The HomeLink®
indicator light should turn on.
The status of the opening and
closing of a garage door is
shown by the garage door
opener indicators.
Vehicles with auto anti-glare
inside rear view mirror
Opening
Closing
Vehicles with Digital Rear-
view MirrorOpening
Closing
This function is only available if the
garage door opener motor used is a
compatible device. (To check
device compatibility, refer to
www.homelink.com.)
The indicators can operate
within approximately 820 ft. (250
m) of the garage door. However,
if there are obstructions
between the garage door and
the vehicle, such as houses and
trees, feedback signals from the
garage door may not be
received.
To recall the previous door oper-
ation status, press and release
Operating HomeLink®
ColorStatus
Orange (flash- ing)Currently open-ing/closing
GreenOpening/closing has completed
Red (flashing)
Feedback sig-
nals cannot be received

441
Owners Manual_USA_M0C052_en
6
6
Maintenance and care
Maintenance and care
6-1. Maintenance and careCleaning and protecting the vehicle exterior .......... 442
Cleaning and protecting the vehicle interior ........... 445
6-2. Maintenance Maintenance requirements.................................. 448
General maintenance.. 449
Emission inspection and maintenance (I/M) pro-
grams ........................ 452
6-3. Do-it-yourself mainte- nance
Do-it-yourself service pre- cautions ..................... 454
Hood ........................... 456
Engine compartment ... 457
12-volt battery ............. 463
Tires ............................ 466
Tire inflation pressure.. 476
Wheels ......... ...............478
Air conditioning filter .... 479
Cleaning the hybrid battery (traction battery) air intake
vents.......................... 481
Electronic key battery.. 484
Checking and replacing fuses.......................... 486
Light bulbs................... 489

4426-1. Maintenance and care
Owners Manual_USA_M0C052_en
6-1.Maintenance and care
Working from top to bottom,
liberally apply water to the
vehicle body, wheel wells and
underside of the vehicle to
remove any dirt and dust.
 Wash the vehicle body using
a sponge or soft cloth, such
as a chamois.
 For hard-to-remove marks,
use car wash soap and rinse
thoroughly with water.
 Wipe away any water.
 Wax the vehicle when the
waterproof coating deterio-
rates.
If water does not bead on a clean
surface, apply wax when the vehi-
cle body is cool.
■Automatic car washes
●Fold the mirrors before washing
the vehicle.
Start washing from the front of the
vehicle. Extend the mirrors before
driving.
●Brushes used in automatic car
washes may scratch the vehicle
surface, parts (wheel, etc.) and
harm your vehicle’s paint.
■High pressure car washes
As water may enter the cabin, do
not bring the nozzle tip near the
gaps around the doors or perimeter
of the windows, or spray these
areas continuously.
■When using a car wash
If the door handle becomes wet
while the electronic key is within the
effective range, the door may lock
and unlock repeatedly. In that case,
follow the following correction pro-
cedures to wash the vehicle:
●Place the key in a position 6 ft. (2
m) or more separate from the
vehicle while the vehicle is being
washed. (Take care to ensure that
the key is not stolen.)
●Set the electronic key to battery-
saving mode to disable the Smart
key system. ( P.129)
■Wheels and wheel ornaments
●Remove any dirt immediately by
using a neutral detergent.
●Wash detergent off with water
immediately after use.
●To protect the paint from damage,
make sure to obs erve the follow-
ing precautions.
• Do not use acidic, alkaline or abrasive detergent
• Do not use hard brushes
• Do not use detergent on the wheels when they are hot, such
as after driving or parking in hot
weather
■Brake pads and calipers
Rust may form if the vehicle is
parked with wet brake pads or disc
rotors, causing them to stick. Before
parking the vehicle after it is
washed, drive slo wly and apply the
brakes several times to dry the
parts.
■Bumpers and wheel arch mold-
ings
Do not scrub with abrasive cleaners.
Cleaning and protect-
ing the vehicle exte-
rior
Perform cleaning in a man-
ner appropriate to each
component and its material.
Cleaning instructions

4486-2. Maintenance
Owners Manual_USA_M0C052_en
6-2.Maintenance
■Repair and replacement
It is recommended that genuine
Toyota parts be used for repairs to
ensure performanc e of each sys-
tem. If non-Toyota parts are used in
replacement or if a repair shop other
than a Toyota dealer performs
repairs, confirm the warranty cover-
age.
■Allow inspection and repairs to
be performed by a Toyota
dealer
●Toyota technicians are well-
trained specialists and are kept up
to date with the latest service
information. They are well
informed about the operation of all
systems on your vehicle.
●Keep a copy of the repair order. It
proves that the maintenance that
has been performed is under war-
ranty coverage. If any problem
should arise while your vehicle is
under warranty, your Toyota
dealer will promptly take care of it.
General maintenance should be
performed on a daily basis. This
can be done by yourself or by a
Toyota dealer.
Scheduled maintenance should
be performed at specified inter-
vals according to the mainte-
nance schedule.
For details about maintenance
items and schedules, refer to the
“Scheduled Maintenance Guide” or
“Owner’s Manual Supplement”.
Maintenance require-
ments
To ensure safe and econom-
ical driving, day-to-day care
and regular maintenance
are essential. It is the
owner’s responsibility to
perform regular checks.
Toyota recommends the
maintenance below.
WARNING
■If your vehicle is not properly
maintained
Improper maintenance could
result in serious damage to the
vehicle and possible death or seri-
ous injury.
■Handling of the 12-volt bat-
tery
●Engine exhaust, some of its
constituents, and a wide variety
of automobile components con-
tain or emit chemicals known to
the State of California to cause
cancer and birth defects and
other reproductive harm. Work
in a well ventilated area.
●Oils, fuels and fluids contained
in vehicles as well as waste pro-
duced by component wear con-
tain or emit chemicals known to
the State of California to cause
cancer and birth defects or
other reproductive harm. Avoid
exposure and wash any
affected area immediately.
●12-volt battery posts, terminals
and related accessories con-
tain lead and lead compounds
which are known to cause brain
damage. Wash your hands after
handling. ( P.463)
General maintenance
Scheduled maintenance

4506-2. Maintenance
Owners Manual_USA_M0C052_en
Exhaust sys-
temThere should not
be any fumes or
strange sounds.
Radiator/con-
denser/inter-
cooler
The radiator, con-
denser and inter-
cooler should be
free from foreign
objects. (P.461)
Washer fluid
Is there sufficient
washer fluid?
( P.462)
Vehicle interior
ItemsCheck points
12-volt batteryCheck the connec-
tions. ( P.463)
Accelerator
pedal
• The accelerator
pedal should
move smoothly
(without uneven
pedal effort or
catching).
Automatic
transmission
“Park” mecha-
nism
• When parked on a slope and the
shift lever is in P,
is the vehicle
securely
stopped?
ItemsCheck points
Brake pedal
• Does the brake pedal move
smoothly?
• Does the brake pedal have
appropriate
clearance from
the floor?
• Does the brake pedal have the
correct amount
of free play?
Brakes
• The vehicle should not pull to
one side when
the brakes are
applied.
• The brakes should work
effectively.
• The brake pedal should not feel
spongy.
• The brake pedal should not get
too close to the
floor when the
brakes are
applied.
Head
restraints
• Do the head restraints move
smoothly and
lock securely?
Indica-
tors/buzzers
• Do the indica-tors and buzzers
function prop-
erly?
ItemsCheck points

4526-2. Maintenance
Owners Manual_USA_M0C052_en
The OBD system determines
that a problem exists some-
where in the emission control
system. Your vehicle may not
pass the I/M test and may need
to be repaired. Contact your
Toyota dealer to service the
vehicle.
When the 12-volt battery is
disconnected or discharged
Readiness codes that are set
during ordinary driving are
erased.
Also, depending on your driv-
ing habits, the readiness
codes may not be completely
set.
 When the fuel tank cap is
Tires
• Is the tire infla-
tion pressure
correct?
• The tires should not be damaged
or excessively
worn.
• Have the tires been rotated
according to the
maintenance
schedule?
• The wheel nuts should not be
loose.
Windshield
wipers
• The wiper blades should not show
any signs of
cracking, split-
ting, wear, con-
tamination or
deformation.
• The wiper blades should clear the
windshield with-
out streaking or
skipping.
ItemsCheck pointsEmission inspection
and maintenance (I/M)
programs
Some states have vehicle
emission inspection pro-
grams which include OBD
(On Board Diagnostics)
checks. The OBD system
monitors the operation of
the emission control sys-
tem.
If the malfunction indica-
tor lamp comes on
Your vehicle may not pass
the I/M test in the follow-
ing situations: