2021 TOYOTA TUNDRA battery

3535-1. Using the air conditioning system
5
Interior features
■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. 448
WARNING
■To prevent the windshield from fogging up
● Do not use
during cool air operation in extremely humid weather.
The difference between the temperature of the outside air and t hat of the
windshield can cause the outer surface of the windshield to fog up, block-
ing your vision.
■ To prevent burns (vehicles with rear view mirror defoggers and wind-
shield wiper de-icer)
● Do not touch the rear view mirror surfaces when the outside rear view mir-
ror defoggers are on.
● Do not touch the glass at lower part of the windshield or to th e side of the
front pillars, when the windshield wiper de-icer is on.
NOTICE
■ To prevent battery discharge
Do not leave the air conditioning system on longer than necessa ry when the
engine is stopped.
● Do not place anything on the instrument
panel which may cover the air outlets.
Otherwise, air flow may be obstructed,
preventing the windshield defoggers to
defog.

3565-1. Using the air conditioning system
NOTICE
■To prevent damage to the seat heaters/seat ventilators
Do not put heavy objects that have an uneven surface on the sea t and do
not stick sharp objects (needles, nails, etc.) into the seat.
■ To prevent battery discharge
Turn the seat heaters/seat ventilators off when the engine is n ot running.

3595-2. Using the interior lights
5
Interior features
“OFF”
The cargo lamp can be individually
turned on or off.
“DOOR”
The cargo lamp comes on when a
door is opened. They turn off when
the doors are closed.
“ON”
The cargo lamp cannot be individually turned off.
■Illuminated entry system
Vehicles without a smart key system
The lights automatically turn on/off according to the engine sw itch position,
whether the doors are locked/unlocked, and whether the doors are opened/
closed.
Vehicles with a smart key system
The lights automatically turn on/off according to engine switch mode, the
presence of the electronic key, whether the doors are locked/un locked, and
whether the doors are opened/closed.
■ To prevent battery discharge
If the following lights remain on when the door is not fully closed and the main
switch is in the “DOOR” position, the lights will go off automatically after 20
minutes:
●Personal lights
● Interior lights
● Cargo lamp
■ Customization that can be configured at Toyota dealer
Settings (e.g. the time elapsed before lights turn off) can be changed.
(Customizable features: P. 564)
Cargo lamp main switch
1
2
3

3815-4. Using the other interior features
5
Interior features
Type F (back of the console box)
Open the lid.
■The power outlets can be used when
The engine switch is in ACC or ON.
■ Passing a cable from th e console box (type D)
P. 363
■ When turning the engine switch off
Disconnect electrical devices with charging functions, such as mobile battery
packs.
If such devices are left connected, the engine switch may not b e turned off
normally.
NOTICE
● Close the power outlet lids when the power outlets are not in use.
Foreign objects or liquids that enter the power outlets may cau se a short
circuit.
● Do not use the power outlets longer than necessary when the eng ine is
not running.

3835-4. Using the other interior features
5
Interior featuresFold down the armrest for use.
NOTICE
■To prevent damage to the USB charging ports
● Do not insert foreign objects into the ports.
● Do not spill water or other liquids into the ports.
● When the USB charging ports are not in use, close the lids. If a foreign
object or liquid enters a port may cause a short circuit.
● Do not apply excessive force to or impact the USB charging port s.
● Do not disassemble or modify the USB charging ports.
■ To prevent damage to external devices
● Do not leave external devices in the vehicle. The temperature i nside the
vehicle may become high, resulting in damage to an external dev ice.
● Do not push down on or apply unnecessary force to an external device or
the cable of an external device while it is connected.
■ To prevent battery discharge
Do not use the USB charging ports for a long period of time wit h the engine
stopped.
Armrest (CrewMax models)
NOTICE
Do not apply too much load on the armrest.

3855-4. Using the other interior features
5
Interior features
Garage door opener
The HomeLink® wireless control system in your vehicle has 3 buttons
which can be programmed to operate 3 different devices. Refer to the
programming methods on the following pages to determine the
method which is approp riate for the device.
HomeLink
® indicator light
Garage door operation indica-
tors
Buttons
■Before programming the HomeLink®
● During programming, it is possible that garage doors, gates, or
other devices may operate. For this reason, make sure that peo-
ple and objects are clear of the garage door or other devices t o
prevent injury or other potential harm.
● It is recommended that a new battery be placed in the remote
control transmitter for mo re accurate programming.
● Garage door opener motors manufactured after 1995 may be
equipped with rolling code pro tection. If this is the case, you may
need a stepladder or other sturdy, safe device to reach the
“learn” or “smart” button on the garage door opener motor.
: If equipped
The garage door opener can be programmed to operate garage
doors, gates, entry doors, door locks, home lighting systems,
security systems, and other devices.
HomeLink®
1
2
3

3915-4. Using the other interior features
5
Interior features
Press and hold the 2 outside but-
tons for 10 seconds until the
HomeLink
® indicator light
changes from continuously lit
orange to rapidly flashing green.
If you sell your vehicle, be sure to
erase the programs stored in the
HomeLink
® memory.
■ Codes stored in the HomeLink® memory
● The registered codes are not erased even if the battery cable i s discon-
nected.
● If learning failed when registering a different code to a HomeL ink
® button
that already has a code registered to it, the already registere d code will not
be erased.
■ Before programming
●Install a new battery in the transmitter.
● The battery side of the transmitter must be pointed away from the Home-
Link
®.
Erasing the entire HomeLink® memory (all three codes)

3965-4. Using the other interior features
■Circling calibration
Stop the vehicle in a place where it is safe to drive in a circle.
Press and hold the button for
9 seconds.
“C” appears on the compass
display.
Drive the vehicle at 5 mph
(8 km/h) or less in a circle
until a direction is displayed.
If there is not enough space to
drive in a circle, drive around the
block until the direction is dis-
played.
■ Conditions unfavorable to correct operation
The compass may not show the correct direction in the following conditions:
● The vehicle is stopped immediately after turning.
● The vehicle is on an inclined surface.
● The vehicle is in a place where the earth’s magnetic field is subject to inter-
ference by artificial magnetic fields (underground car park/par king lot, under
a steel tower, between buildings, roof car park/parking lot, near an intersec-
tion, near a large vehicle, etc.).
● The vehicle has become magnetized.
(There is a magnet or metal object near the inside rear view mi rror.)
● The battery has been disconnected.
● A door is open.
1
2
3