2023 TOYOTA TUNDRA HYBRID brake

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

872-1. Instrument cluster
Owners Manual_USA_M0C052_en
2
Vehicle status information and indicators
Warning lights inform the driver
of malfunctions in the indicated
vehicle’s systems.
Warning lights
(U.S.A.)
Brake system warn-
ing light
*1 (  P.501)
(Canada)
(Red)
Brake system warn-
ing light
*1 ( P.501)
(Yellow)
Brake system warn-
ing light
*1 ( P.501)
High coolant tempera-
ture warning light
*2
(  P.501)
Charging system
warning light
*2
(  P.502)
Low engine oil pres-
sure warning light
*2
(  P.502)
(U.S.A.)
Malfunction indicator
lamp
*1 ( P.502)
(Canada)
Malfunction indicator
lamp
*1 ( P.502)
SRS warning light
*1
(  P.502)
(U.S.A.)
ABS warning light*1
(  P.503)
(Canada)
ABS warning light*1
(  P.503)
(Red)
Electric power steer-
ing system warning
light
*1 ( P.503)
(Yellow)
Electric power steer-
ing system warning
light
*1 ( P.503)
(Flashes or
illuminates)
PCS warning light*1
(  P.503)
(Orange)
LTA i n d i c a t o r
( P.504)
(Flashes)
Intuitive parking assist
OFF indicator
*3
(  P.504)
(Flashes)
PKSB OFF indica-
tor
*1 ( P.504)
(Flashes)
“RCTA OFF” indica-
tor
*1 ( P.505)
Slip indicator light
*1
(  P.505)
Inappropriate pedal
operation warning
light
*2 (  P.505)
(Flashes)
Brake hold operated
indicator
*1 ( P.506)
(U.S.A.)
(Flashes)
Parking brake indica-
tor ( P.506)
(Canada)
(Flashes)
Parking brake indica-
tor ( P.506)

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.

892-1. Instrument cluster
Owners Manual_USA_M0C052_en
2
Vehicle status information and indicators
The indicators inform the driver
of the operating state of the
vehicle’s various systems.
Indicators
Turn signal indicator
(  P.204)
(U.S.A.)
Headlight indicator
( P.211)
(Canada)
Tail light indicator
( P.211)
Headlight high beam indi-
cator ( P.213)
Automatic High Beam
indicator ( P.214)
Front fog light indicator
(  P.214)
Smart key system indica-
tor
*1 (  P.195)
“READY” indicator
(  P.195)
Cruise control indicator
(  P.256)
Dynamic radar cruise
control indicator
(  P.256)
Cruise control “SET” indi-
cator ( P.256)
(*2)
LTA indicator ( P.231,
248)
Intuitive parking assist
OFF indicator
*3, 4
(  P.275)
PKSB OFF indicator
*3, 5
(  P.289)
(Flashes)
Slip indicator light*5
(  P.375)
VSC OFF indicator
*3, 5
(  P.376)
PCS warning light
*3, 5
(  P.234)
BSM outside rear view
mirror indicators
*5, 6
(  P.268, 282)
BSM OFF indicator
*3, 5
(  P.269)
RCTA OFF indicator
*3, 5
(  P.282)
Brake hold standby indi-
cator
*5 (  P.208)
Brake hold operated indi-
cator
*5 (  P.208)
Security indicator
*7
(  P.81, 82)
Low outside temperature
indicator
*8 (  P. 9 2 )
(U.S.A.)
Parking brake indicator
( P.205)
(Canada)
Parking brake indicator
( P.205)
“ECO” mode indicator
(  P.358)
“SPORT” mode indicator
(if equipped) ( P.358)
“SPORT S” mode indica-
tor (if equipped) ( P.358)
“SPORT S+” mode indi-
cator (if equipped)
(  P.358)

982-1. Instrument cluster
Owners Manual_USA_M0C052_ention. As a result, the actual dis-
tance that can be driven may differ
from that displayed.
●When only a small amount of fuel
is added to the tank, the display
may not be updated. When refuel-
ing, turn the power
switch to OFF.
If the vehicle is refueled without
turning the power switch to OFF,
the display may not be updated.
●When “Refuel” is displayed, the
remaining fuel amount is low and
the distance that can be driven
with the remaining fuel cannot be
calculated. Refuel immediately.
■Hybrid System Indicator
The Hybrid System Indicator will not
operate in the following situations:
●The “READY” indicator is not illu-
minated.
●The shift lever is in a range other
than D or S.
Select to display the following
navigation system-linked infor-
mation:
 Route guidance to destination
 Compass display (heading-up
display)
Select to enable selection of an
audio source or track on the
meter using the meter control
switches.
This menu icon can be set to be
displayed/not displayed in .
■Trailer brake
Displays trailer brake control
status ( P.380) and trailer
type
*.
*: To select the trailer, press and
hold the meter control switch.
( P.100)
■Trailer Mode BSM
Displays trailer length
* and
trailer blind spot status
( P.267).
*: To select the trailer, press and
hold the meter control switch.
( P.100)
■Drive information
2 items that are selected using
the “Drive Info Items” setting
(average speed, distance and
total time) can be displayed ver-
tically.
The displayed information
changes according to the “Drive
Info Type” setting (since the sys-
tem was started or between
resets). ( P. 9 9 )
Use the displayed information as a
reference only.
Following items will be displayed.
 “Trip”
• “Average Speed”: Displays the
average vehicle speed since
hybrid system start
*
Navigation system-linked
display
Audio system-linked dis-
play
Vehicle information dis-
play

1002-1. Instrument cluster
Owners Manual_USA_M0C052_en
■Changing settings of the
trailer type
 Trailer settings screen
Displays the name of the cur-
rently selected trailer or “No
Trailer Selected” if a trailer
has not yet been selected
Add a new trailer or select an
existing saved trailer
• Maximum of 10 trailers can be saved.
• Select the trailer name, length, hitch type, brake type and num-
ber of axles.
• The parameters which can be set depend on which of the trailer
systems are installed on the vehi-
cle. (Trailer Brake Controller,
Trailer Backup Guide and Trailer
Mode BSM)
Deselect the currently
selected trailer
• Used when a 4-pin trailer connec-tor has been disconnected. (4-pin
trailer connector disconnection
cannot be automatically detected
by Trailer Brake Controller)
Edit the parameters of a
saved trailer (name, length,
hitch type, brake type and
number of axles)
• The parameters which can be edited depend on which of the
trailer systems are installed on
the vehicle (Trailer Brake Control-
ler, Trailer Backup Guide and
Trailer Mode BSM)
Delete a saved trailer
 Trailer detail screen
Displays the name of the cur-
rent trailer which is being
added or edited.
Change the name of the
trailer.
Change the hitch type of the
trailer between ball hitch
(conventional), gooseneck or
fifth wheel. Note that goose-
neck and fifth wheel trailers
are not supported for some
features (Trailer Backup
Guide and Trailer Mode
BSM)
Change the length of the
trailer. If the exact length is
not listed, round up the actual
length of the trailer to the
closest available value.
“Auto” length dete ction can also be
selected.

1012-1. Instrument cluster
Owners Manual_USA_M0C052_en
2
Vehicle status information and indicators
Change the number of axles.
Change the brake type (elec-
tric or electric over hydraulic)
and weight of the trailer, or
turn trailer brakes off for that
trailer.
Save the trailer information
If there are any errors with the
trailer values, re-select the value or
delete and re-save the trailer. If the
error continues, contact your Toy-
ota dealer.
■Vehicle functions and set-
tings that can be changed
 P.561
■Suspension of the settings dis-
play
●Some settings cannot be changed
while driving. When changing set-
tings, park the vehicle in a safe
place.
●If a warning message is displayed,
operation of the settings display
will be suspended.
Select to display warning mes-
sages and measures to be
taken if a malfunction is
detected. ( P.511)
WARNING
■Cautions during setting up
the display
If the hybrid system is operating
when changing the display set-
tings, ensure that the vehicle is
parked in a place with adequate
ventilation. In a closed area such
as a garage, exhaust gases
including harmful carbon monox-
ide (CO) may collect and enter
the vehicle. This may lead to
death or a seri ous health hazard.
NOTICE
■During setting up the display
To prevent 12-volt battery dis-
charge, ensure that the hybrid
system is operating while setting
up the display features.
Warning message display