2022 TOYOTA TUNDRA HYBRID warning

1984-2. Driving procedures
Owners Manual_USA_M0C031_en
Modes can be changed by
pressing the power switch with
the brake pedal released. (The
mode changes each time the
switch is pressed.)“ACCESSORY”
“IGNITION ON”
1 OFF
*
The emergency flashers can be
used.
The multi-information display will
not be displayed.
2ACC
Some electrical components such
as the audio sys tem can be used.
“ACCESSORY” will be displayed
on the meter.
3 ON
All electrical components can be
used.
“IGNITION ON” will be displayed on
the meter.
*: If the shift lever is in a position
other than P when turning off the
hybrid system, the power switch
will be remained to ON, not to
OFF.
■Auto power off function
If the vehicle is left in ACC for more
than 20 minutes or ON (the hybrid
system is not operating) for more
than an hour with the shift lever in P,
WARNING
■When parking
Exhaust gases include harmful
carbon monoxide (CO), which is
colorless and odorless. Observe
the following precautions.
Failure to do so may cause
exhaust gases to enter the vehicle
and may lead to an accident
caused by light-headedness, or
may lead to death or a serious
health hazard.
●If the vehicle is in a poorly venti-
lated area or a closed area,
such as a garage, stop the
hybrid system.
●Do not leave the vehicle with
the hybrid system operating for
a long time. If such a situation
cannot be avoided, park the
vehicle in an open space and
ensure that exhaust fumes do
not enter the vehicle interior.
●Do not leave the hybrid system
operating in an area with snow
build-up, or where it is snowing.
If snowbanks build up around
the vehicle while the hybrid sys-
tem is operating, exhaust gases
may collect and enter the vehi-
cle.
Changing power switch
modes

2004-2. Driving procedures
Owners Manual_USA_M0C031_en
*1: Shifting to the D position allows the system to select a gear suit-
able for the driving conditions.
Setting the shift lever to the D
position is recommended for nor-
mal driving.
*2: Selecting shift ranges using S mode restricts the upper limit of
the possible gear ranges, con-
trols engine brak ing force, and
prevents unnecessary upshifting.
■Driving on a downhill
On declines, there may be case
where the vehicle shifts down auto-
matically to obtain engine braking.
As a result of the downshifting, the engine speed may increase.
■To protect the a
utomatic trans-
mission
●If the tires spin continually when
the vehicle becomes stuck in mud,
dirt or snow, or if the accelerator
pedal is depressed and released
repeatedly while driving, the auto-
matic transmission temperature
may become too high and the
automatic transmission may be
damaged.
To avoid damaging the automatic
transmission, the system may
temporarily lock the gear. If the
automatic transmission tempera-
ture falls, the gear locking is can-
celed and the automatic
transmission is returned to the
normal operation.
●If the automatic tr ansmission fluid
temperature is high, “Transmis-
sion Oil Temp. High Stop in a Safe
Place and See Owner’s Manual”
will be displayed on the multi-
information display. Immediately
stop the vehicle in a safe place,
shift the shift lever to P and wait
until the warning message go off.
If the warning message go off, you
may start the vehicle again. If the
warning message do not go off,
contact your Toyota dealer.
■When driving with dynamic
radar cruise control with full-
speed range (if equipped) or
cruise control activated (if
equipped)
Even when perform ing the following
actions with the intent of enabling
engine braking, engine braking will
not activate because dynamic radar
cruise control with full-speed range
or cruise control will not be can-
celed.
●While driving in S mode, down-
shifting to 9, 8, 7, 6, 5 or 4.
(  P.202)
Automatic transmis-
sion
Select the shift position
depending on your pur-
pose and situation.
Shift position purpose
and functions
Shift posi-
tionObjective or function
P
Parking the vehi-
cle/starting the hybrid system
RReversing
N
Neutral (Condition in
which the po wer is not
transmitted)
DNormal driving*1
SS mode driving*2
(  P.202)

2014-2. Driving procedures
Owners Manual_USA_M0C031_en
4
Driving
■Restraining sudden start (Drive-
Start Control)
 P. 1 7 7
■AI-SHIFT
The AI-SHIFT automatically selects
the suitable gear according to driver
operation and driving conditions.
AI-SHIFT automatically operates
when the shift lever is in D or S.
While the power switch is in
ON and the brake pedal
depressed
*, shift the shift lever
while pushing the shift release
button on the shift knob. Shift the shift lever while
pushing the shift release button
on the shift knob.
Shift the shift lever normally.
When shifting the shift lever
between P and D, make sure that
the vehicle is completely stopped.
*: For the vehicle to be able to be shifted from P, the brake pedal
must be depressed before the
shift release button is pushed. If
the shift release button is pushed
first, the shift lock will not be
released.
■Shift lock system
The shift lock system is a system to
prevent accidental operation of the
shift lever in starting.
The shift lever can be shifted from P
only when the power switch is in
ON, the brake pedal is depressed
and the shift release button is
pushed.
■If the shift lever cannot be
shifted from P
First, check whether the brake pedal
is being depressed.
If the shift lever cannot be shifted
even though the brake pedal is
depressed and the shift release but-
ton is pushed, the re may be a prob-
lem with the shift lock system. Have
the vehicle inspected by your Toyota
dealer immediately.
The following steps may be used as
an emergency measure to ensure
that the shift lev er can be shifted.
Releasing the shift lock:
1 Set the parking brake.
2 Turn the power switch off.
3 Depress the brake pedal.
4 Pry the cover up with a flathead
screwdriver or equivalent tool.
To prevent damage to the cover,
WARNING
■When driving on slippery
road surfaces
Do not accelerate or shift gears
suddenly.
Sudden changes in engine brak-
ing may cause the vehicle to spin
or skid, resulting in an accident.
Shifting the shift lever

2024-2. Driving procedures
Owners Manual_USA_M0C031_encover the tip of the screwdriver
with a rag.
5 Press and hold the shift lock
override button and then push
the button on the shift knob.
The shift lever can be shifted
while both buttons are pressed.
■Drive mode
 P.358 When the shift lever is in the S
position, the shift lever can be
operated as follows:
1
Upshifting
2 Downshifting
The selected shift range, from S1 to
S10 will be displayed on the multi-
information display.
The initial shift range in S mode is
set automatically to 4, 5, 6, 7 or 8
according to vehicle speed.
However, the initial shift range may
be set to 4 if AI-SHIFT has oper-
ated while the shift lever was in the
D position. ( P.201)
■S mode
●You can choose from 10 levels of
accelerating force and engine
braking force.
●A lower shift range will provide
greater accelerating force and
engine braking force than a higher
shift range, and t he engine revolu-
tions will also increase.
●To prevent the engine from over-
revving, upshifting may automati-
cally occur.
●To protect the automatic transmis-
sion, a function is adopted that
automatically selects a higher shift
WARNING
■To prevent an accident when
releasing the shift lock
Before pressing the shift lock
override button, make sure to set
the parking brake and depress the
brake pedal.
If the accelerator pedal is acci-
dentally depressed instead of the
brake pedal when the shift lock
override button is pressed and the
shift lever is shifted out of P, the
vehicle may suddenly start, possi-
bly leading to an accident result-
ing in death or serious injury.
Selecting the driving
mode
Changing shift ranges in
S mode

2074-2. Driving procedures
Owners Manual_USA_M0C031_en
4
Driving
available.
■Parking brake automatic
release function
The parking brake will be released
automatically when the accelerator
pedal is slowly depressed under the
following conditions:
●The driver’s door is closed
●The driver is wearing the seat belt
●The shift lever is in a forward or
reverse position.
●The malfunction in dicator lamp or
brake system warning light is not
illuminated
If the automatic release function
does not operate, release the park-
ing brake manually.
■Parking brake automatic lock
function
The parking brake will be set auto-
matically under the following condi-
tions:
●The driver does not operate the
brake pedal
●The driver’s doo r is not closed
●The driver is not wearing the seat
belt
●The shift lever position is not in P
or N
●The malfunction in dicator lamp or
brake system warning light is not
illuminated
■If “Parking Brake Temporarily
Unavailable” i s displayed on
the multi-information display
If the parking brake is operated
repeatedly over a short period of
time, the system may restrict opera-
tion to prevent overheating. If this
happens, refrain from operating the
parking brake. Nor mal operation will
return after about 1 minute.
■If “Parking Brake Unavailable”
is displayed on the multi-infor-
mation display
Operate the parking brake switch. If the message does not disappear
after operating the switch several
times, the system may be malfunc-
tioning. Have the vehicle inspected
by your Toyota dealer.
■Parking brake operation sound
When the parking brake operates, a
motor sound (whirr ing sound) may
be heard. This does not indicate a
malfunction.
■Parking brake indicator light
●Depending on the power switch
mode, the parking brake indicator
light will turn on and stay on as
described below:
ON: Comes on until the parking
brake is released.
Not in ON: Stays on for approxi-
mately 15 seconds.
●When the power switch is turned
to OFF with the parking brake set,
the parking brake indicator light
will stay on for abo ut 15 seconds.
This does not indicate a malfunc-
tion.
■When the parking brake switch
malfunctions
Automatic mode (automatic brake
setting and releas ing) will be turned
on automatically.
■Parking the vehicle
 P.171
■Parking brake engaged warning
buzzer
A buzzer will sound if the vehicle is
driven with the parking brake
engaged. “Parking Brake ON” is dis-
played on the multi-information dis-
play (with the vehicle reaching a
speed of 3 mph [5 km/h]).
■If the brake system warning
light comes on
 P.501
■Usage in winter time
 P.396

2084-2. Driving procedures
Owners Manual_USA_M0C031_en
Turns the brake hold system on
The brake hold standby indica-
tor (green) comes on. While
the system is holding the brake,
the brake hold operated indica-
tor (yellow) comes on.
■Brake hold system operating
conditions
The brake hold system cannot be
turned on in the following condi-
tions:
●The driver’s door is not closed.
●The driver is not wearing the seat
WARNING
■When parking the vehicle
Do not leave a child in the vehicle
alone. The parking brake may be
released unintentionally by a child
and there is the danger of the
vehicle moving that may lead to
an accident resulting in death or
serious injury.
■Parking brake switch
Do not set any o bjects near the
parking brake switch. Objects
may interfere with the switch and
may lead the parking brake to
unexpectedly operate.
NOTICE
■When parking the vehicle
Before you leave the vehicle, shift
the shift lever to P, set the parking
brake and make sure that the
vehicle does not move.
■When the system malfunc-
tions
Stop the vehicle in a safe place
and check the warning messages.
■When the parking brake can-
not be released due to a mal-
function
Driving the vehicle with the park-
ing brake set will lead to brake
components overheating, which
may affect braking performance
and increase brake wear. Have
the vehicle inspected by your Toy-
ota dealer immediately if this
occurs.
Brake Hold
The brake hold system
keeps the brake applied
when the shift lever is in D,
S or N with the system on
and the brake pedal has
been depressed to stop the
vehicle. The system
releases the brake when the
accelerator pedal is
depressed with the shift
lever in D or S to allow
smooth start off.
Enabling the system

2094-2. Driving procedures
Owners Manual_USA_M0C031_en
4
Driving
belt.
●The parking brake is engaged.
If any of the conditions above are
detected when the brake hold sys-
tem is enabled, the system will turn
off and the brake hold standby indi-
cator light will go of f. In addition, if
any of the conditions are detected
while the system is holding the
brake, a warning buzzer will sound
and a message will be shown on the
multi-information display. The park-
ing brake will then be set automati-
cally.
■Brake hold function
●If the brake pedal is left released
for a period of about 3 minutes
after the system has started hold-
ing the brake, the parking brake
will be set automat ically. In this
case, a warning buzzer sounds
and a message is shown on the
multi-informat ion display.
●To turn the system off while the
system is holding the brake, firmly
depress the brake pedal and
press the button again.
●The brake hold function may not
hold the vehicle wh en the vehicle
is on a steep inclin e. In this situa-
tion, it may be necessary for the
driver to apply the brakes. A warn-
ing buzzer will sound and the
multi-informatio n display will
inform the driver of this situation. If
a warning message is shown on
the multi-information display, read
the message and follow the
instructions.
■When the parking brake is set
automatically while the system
is holding the brakes
Perform any of the following opera-
tions to release the parking brake:
●Depress the accelerator pedal.
(The parking brake is not released
if the seat belt is not fastened,
door is open, and/or the shift lever
is in P or N.)
●Operate the parking brake switch with the brake pedal depressed.
Make sure that the parking brake
indicator light goes off. ( P.205)
■When an inspection at your
Toyota dealer is necessary
When the brake hold standby indi-
cator (green) does not illuminate
even when the brake hold switch is
pressed with the brake hold system
operating conditions met, the sys-
tem may be malf unctioning. Have
the vehicle inspected at your Toyota
dealer.
■If “Brake Hold Malfunction
Press Brake to Deactivate Visit
Your Dealer” or “Brake Hold
Malfunction Visit Your Dealer”
is displayed on the multi-infor-
mation display
The system may be malfunctioning.
Have the vehicle inspected by your
Toyota dealer.
■Warning messages and buzzers
Warning messages and buzzers are
used to indicate a system malfunc-
tion or to inform the driver of the
need for caution. If a warning mes-
sage is shown on the multi-informa-
tion display, read the message and
follow the instructions.
■When another control activates
with the brake hold system
A message is displayed on the
multi-information display in any of
the following cases.
●“Brake Hold Unavailable, See the
Owner’s Manual”
• When the brake hold switch is
pressed while the downhill assist
control system is activated.
• When the brake hold switch is
pressed while the front-wheel
drive control switch is turned to
“4L” mode.
●“Brake Hold Unavailable, Press
Brake to Deactive.”
• When the “DAC/CRAWL” switch is operated while the brake hold sys-
tem is activated.

2104-2. Driving procedures
Owners Manual_USA_M0C031_en• When the four-wheel drive control
switch is turned to “4L” mode
while the brake ho ld system is
activated.
The brake hold system and downhill
assist control system or transfer
“4L” mode cannot be activated at
the same time.
Please press the brake hold switch
with the brake pedal depressed to
turn off the brake hold system.
■If the brake hold operated indi-
cator flashes
 P. 5 0 6
WARNING
■When the vehicle is on a
steep incline
Take care when using the brake
hold system on a steep incline,
exercise caution. The brake hold
function may not hold brakes in
such situations.
Also, the system may not activate
depending on the angle of the
slope.
■When stopped on a slippery
road
The system cannot stop the vehi-
cle when the gripping ability of the
tires has been exceeded. Do not
use the system when stopped on
a slippery road.
NOTICE
■When parking the vehicle
The brake hold s ystem is not
designed for use when parking
the vehicle for a long period of
time. Turning the power switch off
while the system i s holding the
brake may release the brake,
which would cause the vehicle to
move. When operating the power
switch, depress the brake pedal,
shift the shift lever to P and set
the parking brake.