2023 TOYOTA TUNDRA HYBRID stop start

18Pictorial index
Owners Manual_USA_M0C052_en
Power switch ................................................... ................... P.195
Starting the hybrid system/changing the modes .................. P. 1 9 5
Emergency stop of the hybrid system ............................ ...... P.494
When the hybrid system will not start .......................... ........ P.524
Warning messages ............................................... ............... P.511
Multimedia system
*2
Air conditioning system ............................. ....................... P.400
Usage................................................................................... P.400
Back window defogger ........................................... .............. P.401
Shift lever.................................................... ........................ P.200
Changing the shift position.................................... ............... P.201
Precautions for towing .. ....................................... ................ P.497
When the shift lever does not move............................. ........ P.201
Tilt and telescopic st eering control switch
*1/tilt and telescopic
steering lock release lever
*1P.143
Adjustment ..................................................... ...................... P.143
Driving position memory
*1.................................................... P.137
Hood lock release lever ........................................ ............. P.456
*1: If equipped
*2: Refer to “MULTIMEDIA OWNER’S MANUAL”.

261-1. For safe use
Owners Manual_USA_M0C052_en
1-1.For safe use
Use only floor mats designed
specifically for vehicles of the
same model and model year as
your vehicle. Fix them securely
in place onto the carpet.
1Insert the retaining hooks
(clips) into the floor mat eye-
lets.
2 Turn the upper knob of each
retaining hook (clip) to secure
the floor mats in place.
Always align the marks . The shape of the retaining hooks
(clips) may differ from that shown in
the illustration.
Before driving
Observe the following
before starting off in the
vehicle to ensure safety of
driving.
Installing floor mats
WARNING
Observe the following precau-
tions.
Failure to do so may cause the
driver’s floor mat to slip, possibly
interfering with t
he pedals while
driving. An unexpectedly high
speed may result or it may
become difficult to stop the vehi-
cle. This could lead to an acci-
dent, resulting in death or serious
injury.
■When installing the driver’s
floor mat
●Do not use floor mats designed
for other models or different
model year vehicles, even if
they are Toyota Genuine floor
mats.
●Only use floor mats designed
for the driver’s seat.
●Always install the floor mat
securely using the retaining
hooks (clips) provided.
●Do not use two or more floor
mats on top of each other.
●Do not place the floor mat bot-
tom-side up or upside-down.

281-1. For safe use
Owners Manual_USA_M0C052_en
Make sure that all occupants are
wearing their seat belts before
driving the vehicle. (P.29)
Use a child restraint system
appropriate for the child until the child becomes large enough to
properly wear the vehicle’s seat
belt. (
P.53)
Make sure that you can see rear
of the vehicle clearly by adjust-
ing the inside rear view mirror (if
equipped), Digital Rear-view
Mirror (if equipped) and outside
rear view mirrors properly.
( P.145, 146, 155)
WARNING
■For safe driving
Observe the following precau-
tions.
Failure to do so m ay result in
death or serious injury.
●Do not adjust the position of the
driver’s seat while driving.
Doing so could cause the driver
to lose control of the vehicle.
●Do not place a cushion between
the driver or passenger and the
seatback.
A cushion may prevent correct
posture from being achieved,
and reduce the effectiveness of
the seat belt and head restraint.
●Do not place anything under the
front seats.
Objects placed under the front
seats may become jammed in
the seat tracks and stop the
seat from locking in place. This
may lead to an accident and the
adjustment mechanism may
also be damaged.
●Always observe the legal speed
limit when driving on public
roads.
●When driving over long dis-
tances, take regular breaks
before you start to feel tired.
Also, if you feel tired or sleepy
while driving, do not force your-
self to continue driving and take
a break immediately.
Correct use of the seat
belts
Adjusting the mirrors

731-4. Hybrid system
Owners Manual_USA_M0C052_en
1
For safety and security
1-4.Hybrid system
■System components
The illustration is an example fo r explanation and may differ from the actual
item.
Gasoline engine
Electric motor (traction motor)
■When stopped/during start
off
The gasoline engine stops
* when the vehicle is stopped.
During start off, the electric
motor (traction motor) drives the
Hybrid system features
Your vehicle is a Hybrid Electric Vehicle. It has characteristi
cs
different from conventional vehicles. Be sure you are closely
familiar with the characteristics of your vehicle, and operate it
with care.
The hybrid system combines the use of a gasoline engine and
an electric motor (traction motor) according to driving condi-
tions, improving fuel efficiency and reducing exhaust emis-
sions.
System components

741-4. Hybrid system
Owners Manual_USA_M0C052_en
vehicle. At slow speeds or when
traveling down a gentle slope,
the engine is stopped
* and the
electric motor (traction motor) is
used.
*: When the hybrid battery (traction battery) requires charging or the
engine is warming up, etc., the
gasoline engine will not automati-
cally stop. ( P. 7 4 )
■During normal driving
The gasoline engine is predomi-
nantly used. The electric motor
(traction motor) charges the
hybrid battery (traction battery)
as necessary.
■When accelerating sharply
When the accelerator pedal is
depressed heavily, the power of
the hybrid battery (traction bat-
tery) is added to that of the gas-
oline engine via the electric
motor (traction motor).
■When braking (regenera-
tive braking)
The wheels operate the electric
motor (traction motor) as a
power generator, and the hybrid
battery (traction battery) is
charged.
■Regenerative braking
●In the following si tuations, kinetic
energy is converted to electric
energy and deceleration force can
be obtained in conjunction with
the recharging of the hybrid bat-
tery (traction battery).
• The accelerator pedal is released while driving with the shift lever in D or S.
• The brake pedal is depressed while driving with t he shift lever in
D or S.
■Conditions in which the gaso-
line engine may not stop
The gasoline engine starts and
stops automatically. However, it may
not stop automatic ally in the follow-
ing conditions:
●During gasoline engine warm-up
●During hybrid battery (traction bat-
tery) charging
●When the temperature of the
hybrid battery (traction battery) is
high or low
●When the heater is switched on
●When the “TOW HA UL” switch is
on
●When the “MTS” switch is on
●When the front-wheel drive control
switch is in “4H” or “4L”
●When the hood is opened during
“READY” indicator is illuminated
●When the shift lever is shifted to S
Depending on the circumstances,
the gasoline engine may also not
stop automatically in other situa-
tions.
■Charging the hybrid battery
(traction battery)
As the gasoline engine charges the
hybrid battery (trac tion battery), the
battery does not need to be charged
from an outside source. However, if
the vehicle is left parked for a long
time the hybrid battery (traction bat-
tery) will slowly dis charge. For this
reason, be sure to drive the vehicle
at least once every few months for
at least 30 minutes or 10 miles (16
km). If the hybrid battery (traction
battery) becomes fully discharged
and you are unabl e to start the
hybrid system, contact your Toyota
dealer.

751-4. Hybrid system
Owners Manual_USA_M0C052_en
1
For safety and security
■Charging the 1 2-volt battery
 P. 5 3 1
■After the 12-volt battery has dis-
charged or when the terminal
has been removed and installed
during exchange, etc.
The gasoline engine may not stop
even if the vehicle is being driven by
the hybrid battery (traction battery).
If this continues for a few days, con-
tact your Toyota dealer.
■Sounds and vibrations specific
to a Hybrid Electric Vehicle
There may be no engine sound or
vibration even though the vehicle is
able to move with the “READY” indi-
cator is illuminated. For safety, apply
the parking brake and make sure to
shift the shift lever to P when
parked.
The following sounds or vibrations
may occur when the hybrid system
is operating and are not a malfunc-
tion:
●Motor sounds may be heard from
the engine compartment.
●Sounds may be heard from the
hybrid battery (traction battery)
under the rear seats when the
hybrid system starts or stops.
●Relay operating sounds such as a
snap or soft clank will be emitted
from the hybrid battery (traction
battery), under the rear seats,
when the hybrid system is started
or stopped.
●Sounds may be heard from the
transmission when the gasoline
engine starts or stops, when driv-
ing at low speeds, or during idling.
●Engine sounds may be heard
when accelerating sharply.
●Sounds may be heard due to
regenerative braking when the
brake pedal is dep ressed or as
the accelerator pedal is released.
●Vibration may be felt when the
gasoline engine starts or stops.
●Cooling fan sounds may be heard
from the air intake vents on the
side of the lower part of the rear
seat.
■Maintenance, repair, recycling,
and disposal
Contact your Toyota dealer regard-
ing maintenance, repair, recycling
and disposal. Do n ot dispose of the
vehicle yourself.
When the gasoline engine is off
while driving, a sound is pro-
duced to warn pedestrians, peo-
ple riding bicycles or other
people and vehicles in the sur-
rounding area that the vehicle is
approaching. The pitch of the
sound adjusts according to vehi-
cle speed. When vehicle speed
is approximately 22 mph (35
km/h) or more, the warning sys-
tem turns off.
■Acoustic vehicle alerting sys-
tem
In the following cases, the acoustic
vehicle alerting system sound may
be difficult for pedestrians, people
riding bicycles or other people and
vehicles in the surrounding area to
hear:
●When there is a lot of noise in the
vicinity
●When it is raining or during strong
winds
Acoustic vehicle alerting
system

771-4. Hybrid system
Owners Manual_USA_M0C052_en
1
For safety and security
started, refuel th e vehicle with at
least enough gasoline to make the
low fuel level warning light ( P.507)
go off. If there is only a small
amount of fuel, th e hybrid system
may not be able to start. (The stan-
dard amount of fuel is about 21.9 L
[5.8 gal., 4.8 Imp. gal.] when the
vehicle is on a level surface. This
value may vary whe n the vehicle is
on a slope. Add extra fuel when the
vehicle is inclined.)
■Electromagnetic waves
●High voltage parts and cables on
Hybrid Electric Vehicles incorpo-
rate electromagnetic shielding,
and therefore emi t approximately
the same amount of electromag-
netic waves as conventional gaso-
line powered vehicles or home
electronic appliances.
●Your vehicle may cause sound
interference in so me third party-
produced radio parts.
■Hybrid battery (tr action battery)
The hybrid battery (traction battery)
has a limited service life. The lifes-
pan of the hybrid battery (traction
battery) can change in accordance
with driving style and driving condi-
tions.
■Starting the hybrid system in an
extremely cold environment
When the hybrid battery (traction
battery) is extremely cold (below
approximately -31°F [-35°C]) under
the influence of t he outside tem-
perature, it may no t be possible to
start the hybrid system. In this case,
try to start the hybrid system again
after the temperature of the hybrid
battery increases due to the outside
temperature increase etc.
WARNING
■High voltage precautions
This vehicle has high voltage DC
and AC systems as well as a 12-
volt system. DC and AC high volt-
age is very dangerous and can
cause severe burns and electric
shock that may result in death or
serious injury.
●Never touch, disassemble,
remove or replace the high volt-
age parts, cables or their con-
nectors.
●The hybrid system will become
hot after starting as the system
uses high voltage. Be careful of
both the high voltage and the
high temperature, and always
obey the warning labels
attached to the vehicle.
●Never try to open the service
plug access hole located under
the right side o f the rear seat.
The service plug is used only
when the vehicle is serviced
and is subject to high voltage.
■Road accident cautions
Observe the following precautions
to reduce the risk of death or seri-
ous injury:
●Stop the vehicle in a safe place
to prevent subsequent acci-
dents. While depressing the
brake pedal, apply the parking
brake and shift the shift lever to
P to stop the hybrid system.
Then, slowly release the brake
pedal

791-4. Hybrid system
Owners Manual_USA_M0C052_en
1
For safety and security
There are air intake vents under
the rear seat for the purpose of
cooling the hybrid battery (trac-
tion battery).
If the vents are blocked, it may
interfere with the cooling of the
hybrid battery (traction battery).
If input/output of the hybrid battery
(traction battery) becomes limited
and the distance that the vehicle
can be driven using the electric
motor (traction motor) is reduced,
the fuel economy 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.
NOTICE
■Hybrid battery (traction bat-
tery)
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 not to block the air
intake vents with anything, such
as a seat cover, plastic cover, or
luggage.
The input/output of the hybrid
battery (traction battery) may be
restricted, leading to a reduction
in hybrid battery (traction bat-
tery) output and a malfunction.
●Periodically clean the air intake
vents to prevent them from clog-
ging. ( P.481)
●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).
Emergency shut off sys-
tem
Hybrid warning message