2023 TOYOTA TUNDRA HYBRID manual transmission

3594-5. Using the driving support systems
Owners Manual_USA_M0C052_en
4
Driving
fuel economy through moderate
throttle characteri stics and by con-
trolling the operation of the air con-
ditioning system (heating/cooling).
The “ECO” indicator comes on.
• “SPORT S” mode
Assists accelerati on response by
controlling the transmission, engine
and steering. Suitable for when pre-
cise handling is desirable, for
example when driving on mountain
roads. The “SPORT S” indicator
comes on.
• “SPORT S+” mode
Helps to ensure th e controllability
and stability of the vehicle by inte-
grally controlling the steering wheel
and suspensions as well as the
transmission and engine, making it
suitable for sporty driving. The
“SPORT S+” indicator comes on.
• “CUSTOM” mode
Allows you to drive with the power
train, chassis and air conditioning
system functions set to your pre-
ferred settings. Custom mode set-
tings can only be changed on the
drive mode customization display of
multimedia system. The “CUSTOM”
indicator comes on.
■The driving mode select switch
can be operated when
The front-wheel dri ve control switch
is in “2H” and “4H”.
■Operation of the air condition-
ing system in Eco mode
Eco mode controls the heating/cool-
ing operations and fan speed of the
air conditioning system to enhance
fuel efficiency. To improve air condi-
tioning performance, perform the
following operations:
●Adjust the fan speed ( P.400)
●Turn off Eco drive mode ( P.358)
■Automatic deactivation of driv-
ing modes:
Driving mode is deactivated or the
driving mode will be changed to nor-
mal mode in the following condi-
tions:
●After turning the power switch off
and then turning it to on
●When the front-wheel drive control
switch is in “4L” (4WD models
only)
●When the Multi-terrain Select is
turned on (if equipped)
●When the Downhill assist control
system is turned on (if equipped)
●When the “TOW HAUL” mode or
“TOW+” mode is turned on (if
equipped)
■Customization
The Custom mode can be changed.
(Customizable features: P.570)

3614-5. Using the driving support systems
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4
Driving
■Shifting from “4L” to “4H”
1 Stop the vehicle completely
and continue to depress the
brake pedal.
2 Shift the shift lever to N.
3 Push and shift the front-
wheel drive control switch to
“4H”.
The “4L” indicator will go off.
■When the front-wheel drive con-
trol switch is shifted to “4L”
VSC is automatically turned off.
■If the “4H” indicator flashes
The transfer mode may not suc-
cessfully change. Drive straight
ahead while accelerating or deceler-
ating, or drive in reverse.
■If the “4H” indicator is ON and
the “4L” indicator continues to
flash
A message will be displayed in the
multi-information display. Follow a
message, shift the shift lever to D or
R and drive the vehicle slowly, then
stop.
■If the “4H” indicator continues
to flash and the “4L” indicator
is ON
A message will be displayed in the
multi-information display. Follow a
message, shift the shift lever to D or
R and drive the vehicle slowly, then
stop.
■If the “4H” indicator is ON and
the “4L” indicator continues to
flash and a buzzer sounds
The shift lever is not in N and/or the
vehicle is moving . Stop the vehicle
completely, shift th e shift lever to N
and make sure that the indicator
stops flashing.
■If the “4H” indicator continues
to flash and the “4L” indicator
is ON and a buzzer sounds
The shift lever is not in N and/or the
vehicle is moving. Stop the vehicle
completely, shift the shift lever to N
and make sure that the indicator
stops flashing
■If the “4H” and “4L” indicator
flashes rapidly
There may be a malfunction in the
four-wheel drive system. Have the
vehicle inspected by your Toyota
dealer immediately.
■Four-wheel drive usage fre-
quency
You should drive in four-wheel drive
for at least 10 miles (16 km) each
month. This will assure that the front
drive components are lubricated.
WARNING
■Shifting the front-wheel drive
control switch from “2H” to
“4H” while driving
Never operate the front-wheel
drive control switch if the wheels
are slipping. Stop the slipping or
spinning before shifting.
■When the vehicle is parked
If the shift lever is moved before
the “4L” indicator turns on/off, the
transfer mode may not be shifted
completely. The transfer mode
disengages both the front and
rear driveshafts from the power-
train and allows the vehicle to
move regardless of the shift posi-
tion. (At this time, the indicator
blinks and the buzzer sounds.)
Therefore, the vehicle is free to
roll even if the automatic trans-
mission is in P. You or someone
else could be seriously injured.
You must complete the shifting of
the transfer mode before placing
transmission in P.

3674-5. Using the driving support systems
Owners Manual_USA_M0C052_en
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Driving
approximately 6 mph (10 km/h).
• With the rear d ifferential is
unlocked: when the vehicle speed
exceeds approximately 15 mph
(25 km/h).
■When the Crawl Control sys-
tem is operated continuously
●If Crawl Control is used continu-
ously for a long time, the brake
system overheats . In this case, a
buzzer will sou nd, a message
stating a malfunction will be dis-
played on the multi-information
display, and the Crawl Control
indicator will flash and then go off.
In this event, as Crawl Control will
be temporarily inoperable, stop
the vehicle immediately in a safe
place, and allow the brake system
to cool down suffi ciently until the
message goes off. (In the mean-
time, normal driving is possible.)
●If Crawl Control is used continu-
ously for a long time, the auto-
matic transmission overheats. In
this case, a buzzer will sound, the
system will be temporarily can-
celed, and a message stating a
malfunction may be displayed on
the multi-informat ion display. In
this event, stop th e vehicle in a
safe place until the message goes
off.
■Sounds and vibrations caused
by the Crawl Control system
●A sound may be heard from the
hybrid system compartment when
the hybrid system is started or just
after the vehicle begins to move.
This sound does not indicate that
a malfunction has occurred in
Crawl Control system.
●Either of the following conditions
may occur when the Crawl Control
system is operating. None of
these are indicators that a mal-
function has occurred.
• Vibrations may be felt through the vehicle body and steering.
• A motor sound may be heard after
the vehicle comes to a stop.
■When there is a malfunction in
the system
Warning lights and/or warning mes-
sages will tu rn on. (P.501, 511)

3934-6. Driving tips
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4
Driving
NOTICE
■To prevent water damage
Take all necessary safety mea-
sures to ensure that water dam-
age to the engine, hybrid system
or other components does not
occur.
●Water entering the engine air
intake will cause severe engine
damage.
●Water entering the automatic
transmission will cause deterio-
ration in shift quality, locking up
of your transmission accompa-
nied by vibration, and ultimately
damage.
●Water can wash the grease
from wheel bearings, causing
rusting and premature failure,
and may also enter the differen-
tials, transmission and transfer
case, reducing the gear oil’s
lubricating qualities.
■When you drive through
water
●If driving through water, such as
when crossing shallow streams,
first check the depth of the
water and the bottom of the riv-
erbed for firmness. Drive slowly
and avoid deep water.
●When crossing a river or a pud-
dle, be sure to cross it without
stopping midway. If you stop or
drive at extremely low speeds in
water, water may enter the vehi-
cle and damage the hybrid bat-
tery making the vehicle unable
to be driven.
■Inspection after off-road driv-
ing
●Sand and mud that has accu-
mulated around brake discs
may affect braking efficiency
and may damage brake system
components.
●Always perform a maintenance
inspection after each day of off-
road driving that has taken you
through rough terrain, sand,
mud, or water. For scheduled
maintenance information, refer
to the “Scheduled Maintenance
Guide” or “Owner’s Manual
Supplement”.

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

4977-2. Steps to take in an emergency
Owners Manual_USA_M0C052_en
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When trouble arises
7-2.Steps to take in an emergency
The following may indicate a
problem with your transmission.
Contact your Toyota dealer or
commercial towing service
before towing.
 The hybrid system warning
message is shown on the
multi-information display and
the vehicle does not move.
 The vehicle makes an abnor-
mal sound.
From the front
Use a towing dolly under the
rear wheels.
From the rear
Use a towing dolly under the
front wheels.
If your vehicle needs
to be towed
If towing is necessary, we
recommend having your
vehicle towed by your Toy-
ota dealer or commercial
towing service, using a
wheel-lift type truck or flat-
bed truck.
Use a safety chain system
for all towing, and abide by
all state/provincial and local
laws.
Situations when it is nec-
essary to contact dealers
before towing
Towing with a wheel-lift
type truck
WARNING
Observe the following precau-
tions.
Failure to do so may result in
death or serious injury.

4997-2. Steps to take in an emergency
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When trouble arises
When using a flat-bed truck to
transport the vehicle, use tire
strapping belts. Refer to the
owner’s manual of the flat-bed
truck for the tire strapping
method.
In order to suppress vehicle
movement during transporta-
tion, set the parking brake and
turn the power switch off.
Your vehicle has not towing
hook. If towing is necessary, we
recommend having your vehicle
towed by your Toyota dealer or
commercial towing service. 
Fluid leaks under the vehicle.
(Water dripping from the air
conditioning after use is nor-
mal.)
 Flat-looking tires or uneven
tire wear
 Engine coolant temperature
gauge needle continually
points higher than normal.
 Voltmeter continually points
higher or lower than normal.
 Engine oil pressure gauge
continually points lower than
normal.
 Automatic transmission fluid
temperature warning mes-
sage is displayed
 Changes in exhaust sound
 Excessive tire squeal when
cornering
 Strange noises related to the
suspension system
NOTICE
■Towing with a sling-type truck
Do not tow with a sling-type truck
to prevent body damage.
Using a flatbed truck
Emergency towing
If you think something
is wrong
If you notice any of the fol-
lowing symptoms, your
vehicle probably needs
adjustment or repair. Con-
tact your Toyota dealer as
soon as possible.
Visible symptoms
Audible symptoms

5458-1. Specifications
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Vehicle specifications
*: The fluid capacity is a reference quantity. If replacement is necessary, contact your Toyota dealer.
Your Toyota vehicle is filled with “Toyota Genuine ATF WS” at the
factory.
Use Toyota approved “Toyota Genuine ATF WS” or an equivalent of
matching quality to satisfy the above specification. Please contact
your Toyota dealer for further details.
NOTICE
■Iridium-tipped spark plugs
Use only iridium-tipped spark plugs. Do not adjust the spark pl ug gap.
Electrical system
Open voltage at 68°F (20°C):
12.0 V or higher
(Turn the power switch off and turn on the
high beam headlights for 30 seconds.)
Charging rates5 A max.
Automatic transmission
Fluid capacity*12.4 qt. (11.7 L, 10.3 Imp.qt.)
Fluid typeToyota Genuine ATF WS
NOTICE
■Automatic transm ission fluid type
Using transmission fluid other than the above type may cause ab normal
noise or vibration, or damage th e transmission of your vehicle.
Transfer (4WD models)
Oil capacity2.17 qt. (2.05 L, 1.80 Imp.qt.)
Oil type and viscosityToyota Genuine ATF WS