fuel TOYOTA TUNDRA HYBRID 2023 User Guide

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

761-4. Hybrid system
Owners Manual_USA_M0C052_enThe illustration is an example fo
r explanation and may differ from the actual
item.
Warning label
Service plug
Hybrid battery (traction battery)
High voltage cables (orange)
Electric motor (traction motor)
Air conditioning compressor
Power control unit
■Running out of fuel When the vehicle has run out of fuel
and the hybrid s
ystem cannot be
Hybrid system precautions
Take care when handling the hybrid system, as it is a high
voltage system (about 288 V at maximum) as well as contains
parts that become extremely hot when the hybrid system is
operating. Obey the warning labels attached to the vehicle.
System components

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

781-4. Hybrid system
Owners Manual_USA_M0C052_en
WARNING
●Do not touch the high voltage
parts, cables and connectors.
●If electric wires are exposed
inside or outside your vehicle,
an electric shock may occur.
Never touch exposed electric
wires.
●If a fire occurs in the Hybrid
Electric Vehicle, leave the vehi-
cle as soon as possible. Never
use a fire extinguisher that is
not meant for electric fires.
Using even a small amount of
water may be dangerous.
●If your vehicle needs to be
towed, do so with the rear
wheels raised. If the wheels
connected to the electric motor
(traction motor) are on the
ground when towing, the motor
may continue to generate elec-
tricity. This may cause a fire.
(  P.497)
●Carefully inspect the ground
under the vehicle. If you find
that liquid has leaked onto the
ground, the fuel system may
have been damaged. Leave the
vehicle as soon as possible.
●If a fluid leak occurs, do not
touch the fluid as it may be
strong alkaline electrolyte from
the hybrid battery (traction bat-
tery). If it comes into contact
with your skin or eyes, wash it
off immediately with a large
amount of water or, if possible,
boric acid solution. Seek imme-
diate medical attention.
■Hybrid battery (traction bat-
tery)
●Never resell, hand over or mod-
ify the hybrid battery. To prevent
accidents, hybrid batteries that
have been removed from a dis-
posed vehicle are collected
through your Toyota dealer. Do
not dispose of the battery your-
self.
Unless the battery is properly col-
lected, the following may occur,
resulting in dea th or serious
injury:
• The hybrid batte ry may be ille-
gally disposed of or dumped,
and it is hazardous to the envi-
ronment or someone may touch
a high voltage part, resulting in
an electric shock.
• The hybrid battery is intended to be used exclusively with your
Hybrid Electric Vehicle. If the
hybrid battery is used outside of
your vehicle or modified in any
way, accidents such as electric
shock, heat generation, smoke
generation, an explosion and
electrolyte leakage may occur.
When reselling or handing over
your vehicle, the possibility of an
accident is extremely high
because the person receiving the
vehicle may not be aware of these
dangers.
●If your vehicle is disposed of
without the hybrid battery hav-
ing been removed, there is a
danger of serious electric shock
if high voltage parts, cables and
their connectors are touched. In
the event that your vehicle must
be disposed of, the hybrid bat-
tery must be disposed of by
your Toyota dealer. If the hybrid
battery is not disposed of prop-
erly, it may cause electric shock
that can result in death or seri-
ous injury.

791-4. Hybrid system
Owners Manual_USA_M0C052_en
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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

85
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2
Vehicle status information and indicators
Vehicle status informa-tion and indicators
2-1. Instrument cluster
Warning lights and indica-tors ............................... 86
Gauges and meters ....... 91
Multi-information display 95
Head-up display .......... 102
Fuel consumption informa- tion ............................ 106

882-1. Instrument cluster
Owners Manual_USA_M0C052_en
*1: These lights turn on when the power switch is turned to ON to
indicate that a system check is
being performed. They will turn
off after the hybrid system is
started, or after a few seconds.
There may be a malfunction in a
system if the light does not come
on, or turn off. Have the vehicle
inspected by your Toyota dealer.
*2: This light illuminates on the multi-informatio n display with a
message.
*3: Intuitive parking assist OFF indi- cator turns on when the power
switch is turned to ON while the
Intuitive parking assist function is
on. It will turn off after a few sec-
onds.
(Flashes)
Rear differential lock
indicator (if equipped)
( P.506)
Tire pressure warning
light
*1 (  P.506)
Low fuel level warn-
ing light ( P.507)
Driver’s and front pas-
senger’s seat belt
reminder light
(  P.507)
Rear passengers’ seat
belt reminder lights
(  P.507)
Air suspension mal-
function indicator (if
equipped) ( P.508)
Trailer brake warning
light ( P.508)
WARNING
■If a safety system warning
light does not come on
Should a safety system light such
as the ABS and SRS warning light
not come on when you start the
hybrid system, this could mean
that these system s are not avail-
able to help protect you in an acci-
dent, which could result in death
or serious injury. Have the vehicle
inspected by you r Toyota dealer
immediately if this occurs.

912-1. Instrument cluster
Owners Manual_USA_M0C052_en
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Vehicle status information and indicators
The units used on the meter and display may differ depending on the target
region.
Multi-information display
Presents the driver with a variety of driving-related data ( P. 9 5 )
Displays warning messages if a malfunction occurs (P.511)
Outside temperature ( P. 9 2 )
Tachometer
Displays the engine speed in revolutions per minute
Clock ( P. 9 2 )
Time displayed is linked to the multimedia system. For details, refer to
“MULTIMEDIA OWNER’S MANUAL”.
Right Side Gauges
Presents the driver with a variety of vehicle states data ( P. 9 4 )
Shift position and shift range display
Displays the selected shift posit ion or selected shift range (P.200)
Fuel gauge
Displays the quantity of fu el remaining in the tank
Gauges and meters
The meters display various drive information.
Meter display

952-1. Instrument cluster
Owners Manual_USA_M0C052_en
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Vehicle status information and indicators
■Changing the display items
1 Press or to select .
2 Press or to select
“Customize Right Side”, and
then press and hold .
3 Select the item and then
press .
■Display
Content display area
By selecting menu icons on the
multi-information di splay, a variety
of driving-related information can
be displayed. The multi-information
display can also be used to change
display settings and other vehicle
settings.
Warning or advice pop-up displays
are also displayed in certain situa-
tions.
Driving support system status
display area
• LTA (Lane Tracing Assist) ( P.242)
Multi-infor mation dis-
play
The multi-information dis-
play is used to display fuel
efficiency related informa-
tion and various types of
driving-related information.
The multi-information dis-
play can also be used to
change the display settings
and other settings.
Display and menu icons

972-1. Instrument cluster
Owners Manual_USA_M0C052_en
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Vehicle status information and indicators
Select to display fuel consump-
tion data in various forms.
■Fuel economy
Use the displayed values as a ref-
erence only.
Distance to empty
Displays the driving range with
remaining fuel. ( P. 9 8 )
Current fuel consumption
Displays instantaneous current fuel
consumption.
Average fuel economy (after
reset)
To reset the average fuel economy
display, press and hold the
meter control switch.
The average fuel economy dis-
play can be changed in .
( P. 9 9 )
 Average fuel economy (after
start)
Displays the average fuel con-
sumption since hybrid system start.
Average fuel economy (after refuel)
Displays the average fuel con-
sumption since the vehicle was
refueled.
■Hybrid System Indica-
tor/Distance to empty
 Hybrid System Indicator
Hybrid Eco area
Shows that gasoline engine power
is not being used very often.
The gasoline engi ne will automati-
cally stop and restart under various
conditions.
Eco area
Shows that the vehicle is being
driven in an Eco-friendly manner.
By keeping the indicator needle
within the Eco area, more Eco-
friendly driving can be achieved.
Power area
Shows that an Eco-friendly driving
range is being exceeded (during full
power driving etc.)
 Distance to empty
Displays the driving range with
remaining fuel. ( 
P. 9 8)
■Distance to empty
●This distance is computed based
on your average fuel consump-
Content of driving infor-
mation