2023 TOYOTA TUNDRA HYBRID Owners Manual

5237-2. Steps to take in an emergency
Owners Manual_USA_M0C052_en
7
When trouble arises
WARNING
■When the spare tire is
attached
The vehicle speed may not be
correctly detecte d, and the follow-
ing systems may not operate cor-
rectly:
• ABS & Brake assist
• VSC
• TRAC
• AUTO LSD (if equipped)
• PCS (Pre-Collision System)
• Automatic High Beam (if equipped)
• LTA (Lane Tracing Assist)
• Dynamic radar cruise control with full-speed range
• EPS
• Trailer Sway Control
• Tire pressure warning system
• BSM (Blind Spot Monitor)
• Panoramic view monitor (if equipped)
• Multi-terrain Monitor (if equipped)
• Toyota parking assist monitor (if equipped)
• Intuitive parking assist
• PKSB (Parking Support Brake)
• Navigation system (if equipped)
Also, not only can the following
system not be utilized fully, but it
may even negatively affect the
drive-train components:
• 4WD system (if equipped)
■Speed limit when using the
temporary spare tire
Do not drive at speeds in excess
of 50 mph (80 km/h) when a tem-
porary spare tire is installed on
the vehicle.
The temporary spare tire is not
designed for driving at high
speeds. Failure to observe this
precaution may lead to an acci-
dent causing death or serious
injury.
NOTICE
■Do not drive the vehicle with
a flat tire
Do not continue driving with a flat
tire.
Driving even a short distance with
a flat tire can damage the tire and
the wheel beyond repair.
■Driving with tire chains and
the temporary spare tire
Do not fit tire chains to the tempo-
rary spare tire.
Tire chains may damage the vehi-
cle body and adversely affect driv-
ing performance.
■When stowing the flat tire
Ensure that ther e is no object
caught between t he tire and the
vehicle underbody.
■When replacing the tires
When removing or fitting the
wheels, tires or th e tire pressure
warning valve and transmitter,
contact your Toyota dealer as the
tire pressure warning valve and
transmitter may be damaged if not
handled correctly.

5247-2. Steps to take in an emergency
Owners Manual_USA_M0C052_en
One of the following may be the
cause of the problem:
The electronic key may not be
functioning properly.
( P.527)
 There may not be sufficient
fuel in the vehicle’s tank.
Refuel the vehicle.
 There may be a malfunction
in the immobilizer system.
( P.81)
 The hybrid system may be
malfunctioning due to an elec-
trical problem such as elec-
tronic key battery depletion or
a blown fuse. However,
depending on the type of mal-
function, an interim measure
is available to start the hybrid
system. ( P.525)
 The temperature of the hybrid
battery (traction battery) may
be extremely low (below
NOTICE
■To avoid damage to the tire
pressure warning valves and
transmitters
When a tire is repaired with liquid
sealants, the tire pressure warn-
ing valve and transmitter may not
operate properly. If a liquid seal-
ant is used, contact your Toyota
dealer or other qualified service
shop as soon as possible. Make
sure to replace the tire pressure
warning valve and transmitter
when replaci ng the tire. (P.470)
If the hybrid system
will not star t
Reasons for the hybrid sys-
tem not starting vary
depending on the situation.
Check the following and
perform the appropriate
procedure:
The hybrid system will not
start even though the cor-
rect starting procedure is
being followed. ( P.195)

5257-2. Steps to take in an emergency
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7
When trouble arises
approximately -31°F [-35°C]).
( P.195)
One of the following may be the
cause of the problem:
 The 12-volt battery may be
discharged. ( P.529)
 The 12-volt battery terminal
connections may be loose or
corroded. ( P.463)
One of the following may be the
cause of the problem:
 The 12-volt battery may be
discharged. ( P.529)
 One or both of the 12-volt bat-
tery terminals may be discon-
nected. ( P.463)
Contact your Toyot a dealer if the
problem cannot be repaired, or if
repair procedures are unknown.
When the hybrid system does
not start, the following steps can
be used as an interim measure
to start the hybrid system if the
power switch is functioning nor- mally.
Do not use this starting proce-
dure except in case of emer-
gency.
1
Pull the parking brake switch
to check that the parking
brake is set. ( P.205)
Parking brake indicator will come
on.
2 Shift the shift lever to P.
3 Turn the power switch to
ACC.
4 Press and hold the power
switch for about 15 seconds
while depressing the brake
pedal firmly.
Even if the hybrid system can be
started using the above steps, the
system may be malfunctioning.
Have the vehicle inspected by your
Toyota dealer.
The interior lights and
headlights are dim, or the
horn does not sound or
sounds at a low volume.
The interior lights and
headlights do not turn on,
or the horn does not
sound.
Emergency start function

5267-2. Steps to take in an emergency
Owners Manual_USA_M0C052_en
The emergency release lever is
located inside of the rear fender
liner.
1Pull the lever forward and
remove from the clip.
2 Pull the lever down to unlock
the fuel door, and it will be
ready to be opened as usual.
After refueling, perform the pro-
cedure in reverse to return the
fuel filler door to its original posi-
tion.
If you lose your keys
New genuine keys can be
made by your Toyota dealer
using other key and the key
number stamped on your
key number plate.
Keep the plate in a safe
place such as your wallet,
not in the vehicle.
NOTICE
■When an electronic key is lost
If the electronic key remains lost,
the risk of vehicle theft increases
significantly. Visit your Toyota
dealer immediately with all
remaining electronic keys that
were provided wit h your vehicle.
If the fuel door cannot
be opened
If the fuel door opener
switch cannot be operated,
the following procedure can
be used to open the fuel
door.
Opening the fuel door
NOTICE
■When opening the fuel filler
door manually
●Do not open the fuel filler door
manually except in an emer-
gency. Fuel may overflow.

5277-2. Steps to take in an emergency
Owners Manual_USA_M0C052_en
7
When trouble arises
■When the electronic key does
not work properly
●Make sure that the smart key sys-
tem has not been deactivated in
the customization setting. If it is
off, turn the function on.
(Customizable features: P.561)
●Check if battery-saving mode is
set. If it is set, cancel the function.
( P.129)
Use the mechanical key
( P.112) in order to perform the
NOTICE
●Using the lever to open the fuel
filler door may n ot allow for an
adequate reduction in fuel tank
pressure before refueling. To
prevent fuel from spilling out,
turn the cap slowly when remov-
ing it.
●During refueling, fuel may spill
out from the filler opening due to
air being discharged from inside
the fuel tank. Therefore, fill the
fuel tank carefully and slowly.
If the electronic key
does not operate prop-
erly
If communication between
the electronic key and vehi-
cle is interrupted ( P.130)
or the electronic key cannot
be used because the battery
is depleted, the smart key
system and wireless remote
control cannot be used. In
such cases, the doors can
be opened and the hybrid
system can be started by
following the procedure
below.
NOTICE
■In case of a smart key system
malfunction or other key-
related problems
Take your vehicle with all the elec-
tronic keys provided with your
vehicle to your Toyota dealer.
Locking and unlocking
the doors

5287-2. Steps to take in an emergency
Owners Manual_USA_M0C052_en
following operations:
1Locks all the doors
2 Unlocks all the doors
Turning the key unlocks the driver’s
door. Turning the key again unlocks
the other doors.
■Key linked functions
1 Closes the windows and the pan-
oramic moon roof
*. (turn and
hold)
2 Opens the windows and the pan-
oramic moon roof
*. (turn and
hold)
These settings must be customized
at your Toyota dealer.
*: If equipped
1 Ensure that the shift lever is
in P and depress the brake
pedal.
2 Touch the Toyota emblem
side of the electronic key to
the power switch.
When the electronic key is
detected, a buzzer sounds and the
power switch will turn to ON.
When the smart key system is
deactivated in customization set-
ting, the power switch will turn to
ACC.
WARNING
■When using the mechanical
key and operating the power
windows and the panoramic
moon roof (if equipped)
Operate the power window or the
panoramic moon roof after check-
ing to make sure that there is no
possibility of any passenger hav-
ing any of their body parts caught
in the window or the panoramic
moon roof.
Also, do not allo w children to
operate the mechanical key. It is
possible for children and other
passengers to get caught in the
power window or the panoramic
moon roof.
Starting the hybrid sys-
tem

5297-2. Steps to take in an emergency
Owners Manual_USA_M0C052_en
7
When trouble arises
3 Firmly depress the brake
pedal and check that is
shown on the multi-informa-
tion display.
4 Press the power switch
shortly and firmly.
In the event that the hybrid sys-
tem still cannot be started, con-
tact your Toyota dealer.
■Stopping the hybrid system
Shift the shift lever to P, set the park-
ing brake, shift the shift lever to P
and press the power switch as you
normally do when stopping the
hybrid system.
■Electronic key battery
As the above proc edure is a tempo-
rary measure, it is recommended
that the electronic key battery be
replaced immediate ly when the bat-
tery is depleted. ( P.484)
■Alarm
Using the mechanical key to lock
the doors will not set the alarm sys-
tem. If a door is unlocked using the
mechanical key when the alarm sys-
tem is set, the alarm may be trig-
gered. ( P. 8 2 )
■Changing power switch modes
Release the brake pedal and press
the power switch in step 3 above.
The hybrid system does not start
and modes will be changed each
time the switch is pressed. ( P.198)
If you have a set of jumper (or
booster) cables and a second
vehicle with a 12-volt battery,
you can jump start your vehicle
by following the steps below.
1 Confirm that the electronic
key is being carried.
When connecting the jumper (or
booster) cables, depending on the
situation, the alarm may activate
and doors locked. ( P. 8 3 )
2 Open the hood ( P.456) and
fuse box cover.
Push claw to completely release
If the vehicle 12-volt
batter y is discharged
The following procedures
may be used to start the
hybrid system if the vehi-
cle’s 12-volt battery is dis-
charged.
You can also call your Toy-
ota dealer or a qualified
repair shop.
Restarting the hybrid sys-
tem

5307-2. Steps to take in an emergency
Owners Manual_USA_M0C052_enthe lock, and them lift up the cover.
3
Open the exclusive jump
starting terminal cover. 4
Remove the engine cover.
Lift the edge of the cover to disen-
gage the fixed pins, and then pull
the cover towards you to remove it.
5 Connect a positive jumper cabl e clamp to on your vehicle and
connect the clamp on the other end of the positive cable to on
the second vehicle. Then, connect a negative cable clamp to
on the second vehicle and connect the clamp at the other end of
the negative cable to .