2023 TOYOTA TUNDRA HYBRID warning light

5047-2. Steps to take in an emergency
Owners Manual_USA_M0C052_en
■LTA indicator (warning buzzer)
■Intuitive parking assist OFF indicator (warning buzzer)
■PKSB OFF indicator (warning buzzer)
Warning lightDetails/Actions
(Orange)
Indicates a malfunction in t he LTA (Lane Tracing Assist)
 Follow the instructions dis played on the multi-infor-
mation display. ( P.252)
Warning lightDetails/Actions
(Flashes)
Indicates a malfunction in the i ntuitive parking assist func-
tion
 Have the vehicle inspecte d by your Toyota dealer
immediately.
Indicates that the system is te mporarily unavailable, possi-
bly due to a sensor being dirt y or covered with ice, etc.
 Follow the instructions dis played on the multi-infor-
mation display. ( P.276)
Warning lightDetails/Actions
(Flashes)
When a buzzer sounds:
Indicates a malfun ction in the PKSB ( Parking Support
Brake) system
 Have the vehicle inspecte d by your Toyota dealer
immediately.
When a buzzer does not sound:
Indicates that the system is te mporarily unavailable, possi-
bly due to a sensor being dirt y or covered with ice, etc.
 Follow the instructions dis played on the multi-infor-
mation display. ( P.291)

5057-2. Steps to take in an emergency
Owners Manual_USA_M0C052_en
7
When trouble arises
■“RCTA OFF” indicator (warning buzzer)
■Slip indicator light
■Inappropriate pedal operation warning light* (warning buzzer)
*: This light illuminates on the mu lti-information display with a message.
Warning lightDetails/Actions
(Flashes)
Indicates a malfunction in t he RCTA (Rear Cross Traffic
Alert) function
 Have the vehicle inspecte d by your Toyota dealer
immediately.
Indicates that the rear bumper around the radar sensor is
covered with dirt, etc. ( P.269)
 Follow the instructions dis played on the multi-infor-
mation display. ( P.282)
Warning lightDetails/Actions
Indicates a malfunction in:
The VSC/Trailer Sway Control system;
 The TRAC system;
 The hill-start assi st control system;
 Multi-terrain Select brake control (if equipped);
 Crawl Control (if equipped); or
 The downhill assist control system (if equipped)
 Have the vehicle inspecte d by your Toyota dealer
immediately.
Warning lightDetails/Actions
When a buzzer sounds:
 Brake Override System is malfunctioning
 Drive-Start Control is malfunctioning
 Drive-Start Control is operating
 Follow the instructions dis played on the multi-infor-
mation display.
When a buzzer does not sound:
Brake Override Syst em is operating.
 Release the accelerator pedal and depress the brake
pedal.

5067-2. Steps to take in an emergency
Owners Manual_USA_M0C052_en
■Brake hold operated indicator (warning buzzer)
■Parking brake indicator (warning buzzer)
■Rear differential lock indicator
■Tire pressure warning light
Warning lightDetails/Actions
(Flashes)
Indicates a malfunction in the brake hold system
 Have the vehicle inspecte d by your Toyota dealer
immediately.
Warning lightDetails/Actions
(Flashes)
(U.S.A.)
or
(Flashes)
(Canada)
It is possible that the parking brake is not fully engaged or
released
 Operate the parking br ake switch once again.
This light comes on when t he parking brake is not
released. If the lig ht turns off after the parking brake
is fully released, the syst em is operating normally.
Warning lightDetails/Actions
(Flashes)
(If equipped)
Indicates a malfunction in the rear differential lock system
 Have the vehicle inspecte d by your Toyota dealer
immediately.
Warning lightDetails/Actions
When the light comes on after b linking for approximately 1
minute:
Malfunction in the tire pressure warning system
 Have the system checked by your Toyota dealer.
When the light comes on:
Low tire inflation pressure such as
 Natural causes
 Flat tire
 Immediately stop the v ehicle in a safe place.
Handling method ( P.508)

5077-2. Steps to take in an emergency
Owners Manual_USA_M0C052_en
7
When trouble arises
■Low fuel level warning light
■Driver’s and front passenger’s seat belt reminder light (warn-
ing buzzer)*
*: Driver’s seat bel t warning buzzer:
The driver’s seat belt warning buzzer sounds to alert the drive r that his or
her seat belt is not fastened. Onc e the power switch is turned to ON, the
buzzer sounds. If the seat belt is still unfastened, the buzzer sounds inter-
mittently for a certain period o f time after the vehicle reaches a certain
speed.
Front passenger’s seat belt warning buzzer:
The front passenger’s seat belt warning buzzer sounds to alert the front
passenger that his or her seat belt is not fastened. If the sea t belt is
unfastened, the buzzer sounds int ermittently for a certain period of time
after the vehicle reaches a certain speed.
■Rear passengers’ seat belt reminder lights (warning buzzer)*
*: Rear passengers’ seat belt warning buzzer:
The rear passengers’ seat belt war ning buzzer sounds to alert the rear
passenger that his or her seat belt is not fastened. If the sea t belt is
unfastened, the buzzer sounds int ermittently for a certain period of time,
after the seat belt is fastened and unfastened and the vehicle reaches a
certain speed.
Warning lightDetails/Actions
Indicates that remaining fuel is approximately 3.4 gal. (13.0
L, 2.8 Imp. gal.) or less
 Refuel the vehicle.
Warning lightDetails/Actions
Warns the driver and/or front passenger to fasten their seat
belts
Fasten the seat belt.
If the front passenger’s seat is occupied, the front
passenger’s seat belt also needs to be fastened to
make the warning light (warning buzzer) turn off.
Warning lightDetails/Actions
Warns the rear passengers to fasten their seat belts
 Fasten the seat belt.

5087-2. Steps to take in an emergency
Owners Manual_USA_M0C052_en
■Air suspension malfunction indicator
■Trailer brake warning light
■Warning buzzer
In some cases, the buzzer may not
be heard due to being in a noisy
location or audio sound.
■Front passenger detection sen-
sor, seat belt reminder and
warning buzzer
●If luggage is placed on the front
passenger seat, the front passen-
ger detection sensor may cause
the warning light to flash and the
warning buzzer to sound even if a
passenger is not sitting in the
seat.
●If a cushion is placed on the seat,
the sensor may n ot detect a pas-
senger, and the warning light may
not operate properly.
■SRS warning light
This warning light system monitors
the airbag sensor assembly, front
impact sensors, side impact sensors
(front door), side impact sensors
(front), side impact sensors (rear),
driver’s seat position sensor,
driver’s seat belt buckle switch, front
passenger occupant classification
sensors, “AIR BAG ON” indicator
light, “AIR BAG OFF” indicator light,
front passenger’s seat belt buckle
switch, seat belt pretensioners, air- bags, interconnecting wiring and
power sources. (
P. 3 7 )
■If the malfunction indicator
lamp comes on while driving
First check the following:
●Is the fuel tank empty?
If it is, fill the fuel tank immediately.
●Is the fuel ta nk cap loose?
If it is, tighten it securely.
The light will go off after several
driving trips.
If the light does not go off even after
several trips, con tact your Toyota
dealer as soon as possible.
■Electric power steering system
warning light (warning buzzer)
When the 12-volt battery charge
becomes insufficient or the voltage
temporarily drops, the electric power
steering system warning light may
come on and the warning buzzer
may sound.
■When the tire pressure warning
light comes on
Inspect the tires to check if a tire is
punctured.
If a tire is punctured: P. 5 1 5
If none of the tires are punctured:
Warning lightDetails/Actions
(If equipped)
Indicates a malfunction in the air suspension system
 Have the vehicle inspecte d by your Toyota dealer
immediately.
Warning lightDetails/Actions
Indicates a malfunction in:
 Trailer brake control system; or
 Trailer connector circuit
 Have the vehicle inspecte d by your Toyota dealer
immediately.

5097-2. Steps to take in an emergency
Owners Manual_USA_M0C052_en
7
When trouble arises
Turn the power switch off then turn it
to ON. Check if the tire pressure
warning light comes on or blinks.
If the tire pressure warning light
blinks for approximately 1 minute
then stays on
There may be a malfunction in the
tire pressure warning system. Have
the vehicle inspected by your Toyota
dealer immediately.
If the tire pressure warning light
comes on
1 After the temperature of the tires
has lowered sufficiently, check
the inflation pressure of each tire
and adjust them to the specified
level.
2 If the warning light does not turn
off even after several minutes
have elapsed, check that the
inflation pressure of each tire is
at the specified level and perform
initialization. ( P.471)
■The tire pressure warning light
may come on due to natural
causes
The tire pressure warning light may
come on due to natural causes such
as natural air leaks and tire inflation
pressure changes caused by tem-
perature. In this case, adjusting the
tire inflation pressure will turn off the
warning light (after a few minutes).
■When a tire is replaced with a
spare tire
The temporary spare tire is not
equipped with the tire pressure
warning valve and transmitter. If a
tire goes flat, the tire pressure warn-
ing light will not turn off even though
the flat tire is replaced with the tem-
porary spare tire.
Replace the temporary spare tire
with the repaired tire and adjust the
proper tire inflation pressure. The
tire pressure warning light will turn
off after several minutes.
■Conditions that the tire pres-
sure warning system may not
function properly
 P.469
WARNING
■If both the ABS and the brake
system warning lights remain
on
Stop your vehicle in a safe place
immediately and contact your Toy-
ota dealer.
The vehicle will become
extremely unstable during brak-
ing, and the ABS system may fail,
which could cause an accident
resulting in death o r serious injury.
■When the electric power
steering system warning light
comes on
When the light comes on yellow,
the assist to the power steering is
restricted. When the light comes
on red, the assis t to the power
steering is lost and handling oper-
ations of the steering wheel
become extremely heavy.
When steering wheel operations
are heavier than usual, grip the
steering wheel firmly and operate
it using more fo rce than usual.
■If the tire pressure warning
light comes on
Be sure to observe the following
precautions.
Failure to do so could cause a
loss of vehicle control and result
in death or serious injury.
●Stop your vehicle in a safe place
as soon as possible.
Adjust the tire inflation pressure
immediately.

5107-2. Steps to take in an emergency
Owners Manual_USA_M0C052_en
WARNING
●If the tire pressure warning light
comes on even after tire infla-
tion pressure adjustment, it is
probable that you have a flat
tire. Check the tires. If a tire is
flat, change it with the spare tire
and have the flat tire repaired by
the nearest Toy ota dealer.
●Avoid abrupt maneuvering and
braking.
If the vehicle tires deteriorate,
you could lose control of the
steering wheel or the brakes.
■If a blowout or sudden air
leakage should occur
The tire pressure warning system
may not activate immediately.
■Maintenance of the tires
Each tire, including the spare (if
provided), should be checked
monthly when cold and inflated to
the inflation pressure recom-
mended by the vehicle manufac-
turer on the vehicle placard or tire
inflation pressure label (tire and
load information label). (If your
vehicle has tires of a different size
than the size indicated on the
vehicle placard or tire inflation
pressure label [tire and load infor-
mation label], you should deter-
mine the proper tire inflation
pressure for those tires.)
As an added safety feature, your
vehicle has been equipped with a
tire pressure monitoring system
(TPMS-tire pressure warning sys-
tem) that illuminates a low tire
pressure telltale (tire pressure
warning light) w hen one or more
of your tires is s ignificantly under-
inflated. Accordingly, when the
low tire pressure te lltale (tire pres-
sure warning light) illuminates,
you should stop and check your
tires as soon as possible, and
inflate them to the proper pres-
sure. Driving on a significantly
under-inflated tire causes the tire
to overheat and can lead to tire
failure. Under-inflation also
reduces fuel efficiency and tire
tread life, and may affect the vehi-
cle’s handling and stopping ability.
Please note that the TPMS (tire
pressure warning system) is not a
substitute for proper tire mainte-
nance, and it is the driver’s
responsibility to m aintain correct
tire pressure, even if under-infla-
tion has not reached the level to
trigger illumination of the TPMS
low tire pressure te lltale (tire pres-
sure warning light).
Your vehicle has also been
equipped with a TPMS (tire pres-
sure warning system) malfunc-
tion indicator to indicate when the
system is not operating properly.
The TPMS (tire pressure warning
system) malfunction indicator is
combined with the low tire pres-
sure telltale (tire pressure warning
light). When the system detects a
malfunction, the te lltale will flash
for approximately one minute and
then remain continuously illumi-
nated. This sequence will con-
tinue upon subsequent vehicle
start-ups as long as the malfunc-
tion exists. When the malfunction
indicator is illuminated, the sys-
tem may not be ab le to detect or
signal low tire pressure as
intended.

5117-2. Steps to take in an emergency
Owners Manual_USA_M0C052_en
7
When trouble arises
■Warning messages
The warning messages explained
below may differ from the actual
messages according to operation
conditions and vehicle specifica-
tions.
■If a message about an operation
is displayed
●If a message about an operation
of the accelerator pedal or brake
pedal is displayed
A warning message about an opera-
tion of the brake pedal may be
shown while the driving assist sys-
WARNING
TPMS (tire pressure warning sys-
tem) malfunctions may occur for a
variety of reasons, including the
installation of replacement or
alternate tires or wheels on the
vehicle that prevent the TPMS
(tire pressure warning system)
from functioning properly. Always
check the TPMS (tire pressure
warning system) malfunction tell-
tale after replacing one or more
tires or wheels on your vehicle to
ensure that the r eplacement or
alternate tires and wheels allow
the TPMS (tire pressure warning
system) to continue to function
properly.
NOTICE
■To ensure the tire pressure
warning system operates
properly
Do not install tires with different
specifications or manufactures as
the tire pressure warning system
may not operate properly.
If a war ning message
is displayed
The multi-information dis-
play shows warnings of
system malfunctions, incor-
rectly performed opera-
tions, and messages that
indicate a need for mainte-
nance. When a message is
shown, perform the correc-
tion procedure appropriate
to the message.
Additionally, if a warning
light comes on or flashes at
the same time that a warn-
ing message is displayed,
take the appropriate correc-
tive action for the warning
light. ( P.501)
If a warning message is dis-
played again after the
appropriate actions have
been performed, contact
your Toyota dealer.