2023 TOYOTA SEQUOIA HYBRID remote start

4726-3. Do-it-yourself maintenance
Owners Manual_USA_M0C043_ensure to disconnect the ground
cable.
●Make sure the power switch on
the charger is off when connecting
and disconnecting the charger
cables to the 12-volt battery.
■After recharging/reconnecting
the 12-volt battery
●Unlocking the doors using the
smart key system may not be pos-
sible immediately after reconnect-
ing the 12-volt battery. If this
happens, use the wireless remote
control or the mechanical key to
lock/unlock the doors.
●Start the hybrid system with the
power switch in ACC. The hybrid
system may not start with the
power switch turned off. However,
the hybrid system will operate nor-
mally from the second attempt.
●The power switch mode is
recorded by the vehicle. If the 12-
volt battery is
reconnected, the
vehicle will return the power
switch mode to the status it was in
before the 12-volt battery was dis-
connected. Make sure to turn off
the power switch before discon-
necting the 12-volt battery. Take
extra care when connecting the
12-volt battery if the power switch
mode prior to discharge is
unknown.
●When the 12-volt b attery is recon-
nected, start the hybrid system,
depress the brake pedal, and con-
firm that it is possible to shift into
each shift position.
If the system will not start even after
multiple attempts, contact your Toy-
ota dealer.
WARNING
■Chemicals in the 12-volt bat-
tery
The 12-volt battery contains poi-
sonous and corrosive sulfuric acid
and may produce hydrogen gas
which is flammable and explosive.
To reduce the risk of death or seri-
ous injury, take the following pre-
cautions while working on or near
the 12-volt battery:
●Do not cause sparks by touch-
ing the 12-volt battery terminals
with tools.
●Do not smoke or light a match
near the 12-volt battery.
●Avoid contact with eyes, skin
and clothes.
●Never inhale or swallow electro-
lyte.
●Wear protective safety glasses
when working near the 12-volt
battery.
●Keep children away from the
12-volt battery.
■Where to safely charge the
12-volt battery
Always charge the 12-volt battery
in an open area. Do not charge
the 12-volt battery in a garage or
closed room where there is insuf-
ficient ventilation.
■Emergency measures regard-
ing electrolyte
●If electrolyte gets in your eyes
Flush your eyes with clean
water for at least 15 minutes
and get immediate medical
attention. If possible, continue
to apply water with a sponge or
cloth while traveling to the near-
est medical facility.

5357-2. Steps to take in an emergency
Owners Manual_USA_M0C043_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.570)
●Check if battery-saving mode is
set. If it is set, cancel the function.
( P.141)
NOTICE
■When opening the fuel filler
door manually
●Do not open the fuel filler door
manually except in an emer-
gency. Fuel may overflow.
●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.141)
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.

5407-2. Steps to take in an emergency
Owners Manual_USA_M0C043_en
■Starting the hybrid system
when the battery is discharged
The hybrid system cannot be started
by push-starting.
■To prevent 12-volt battery dis-
charge
●Turn off the headlights and the
audio system while the hybrid sys-
tem is off.
●Turn off any unnecessary electri-
cal components when the vehicle
is running at a low speed for an
extended period, such as in heavy
traffic.
■When the 12-volt battery is
removed or discharged
●Information stor ed in the ECU is
cleared. When the 12-volt battery
is depleted, have the vehicle
inspected at you r Toyota dealer.
●Some systems may require initial-
ization. ( P.581)
■When removing the 12-volt bat-
tery terminals
When the 12-volt battery terminals
are removed, the information stored
in the ECU is cleared. Before
removing the 12-volt battery termi-
nals, contact your Toyota dealer.
■Charging the 1 2-volt battery
The electricity stor ed in the 12-volt
battery will discharge gradually even
when the vehicle is not in use, due
to natural discharge and the drain-
ing effects of certain electrical appli-
ances. If the vehicle is left for a long
time, the 12-volt battery may dis-
charge, and the hybrid system may
be unable to start. (The 12-volt bat-
tery recharges aut omatically while
the hybrid system is operating.)
■When recharging or replacing
the 12-volt battery
●In some cases, i t may not be pos-
sible to unlock the doors using the
smart key system when the 12-
volt battery is discharged. Use the wireless remote c
ontrol or the
mechanical key to lock or unlock
the doors.
●The hybrid syste m may not start
on the first attemp t after reinstall-
ing the 12-volt battery. In that
case, start the hybrid system in
the same manner as when the
electronic key does not operate
properly ( P.536). This is not a
malfunction, as the hybrid system
will start normally on the second
attempt.
●The power switch mode is memo-
rized by the vehicle. When the 12-
volt battery is reconnected, the
system will return to the mode it
was in before the 12-volt battery
was discharged. Before discon-
necting the 12-volt battery, turn
the power switch off.
If you are unsure what mode the
power switch was in before the
12-volt battery discharged, be
especially careful when recon-
necting the 12-volt battery.
●Some systems may require initial-
ization. ( P.581)
■When replacing t he 12-volt bat-
tery
●Use a 12-volt battery that con-
forms to European regulations.
●Use a battery that the case size is
same as the previous one (LN2),
20 hours rate ca pacity (20HR) is
equivalent (55Ah) or greater, and
performance rating (CCA) is
equivalent (345A) or greater.
• If the sizes differ, the 12-volt bat- tery cannot be properly secured.
• If the 20 hour rate capacity is low,
even if the time p eriod where the
vehicle is not used is a short time,
the 12-volt battery may discharge
and hybrid system may not be
able to start.
●Use a ventilation type calcium bat-
tery
●Use a 12-volt battery with a han-
dle. If a 12-volt battery without a
handle is used, removal is more

Owners Manual_USA_M0C043_en
597What to do if... (Troubleshooting)
Is the power switch in ON?
If you cannot release the shift lever
by depressing the brake pedal with
the power switch in ON. ( P.218)
 Is the window lock switch
pressed?
The power window except for the
one at the driver’s seat cannot be
operated if the win dow lock switch
is pressed. ( P.176)
 The auto power off function
will be operated if the vehicle
is left in ACC or ON (the
hybrid system is not operat-
ing) for a period of time.
( P.216)
 The seat belt reminder light is
flashing
Are the driver and the front passen-
ger wearing the seat belts?
( P.515)
 The parking brake indicator is
on
Is the parking br ake released?
(  P.222)
Depending on the situation,
other types of warning buzzer
may also sound. ( P.509, 519)
 Did anyone inside the vehicle
open a door during setting the
alarm?
The sensor detects it and the alarm
sounds. ( P. 8 4 )
Do one of the following to deac-
tivate or stop the alarms:
 Unlock the doors using the
entry function or wireless
remote control.
 Start the hybrid system. (The
alarm will be deactivated or
stopped after a few seconds.)
 Is the message displayed on
the multi-information display?
Check the message on the multi-
information display. ( P.509)
 When a warning light turns on
or a warning message is dis-
played, refer to P.509, 519.
The shift lever cannot be
shifted from P even if you
depress the brake pedal
The windows do not open
or close by operating the
power window switches
The power switch is
turned off automatically
A warning buzzer sounds
during driving
An alarm is a ctivated and
the horn sounds
A warning buzzer sounds
when leaving the vehicle
A warning light turns on
or a warning message is
displayed

Owners Manual_USA_M0C043_en
Alphabetical Index605
Hybrid Power Meter ................. 96
Hybrid system .......................... 75Acoustic vehicle alerting system............................................. 77
Emergency shut off system .... 81
High voltage components....... 78
Hybrid system precautions ..... 78
If the hybrid sy stem will not start
........................................... 532
Power (ignition) switch ......... 212
Regenerative braking ............. 76
Starting the hybrid system.... 212
Warning lights....................... 510
Hybrid System Indicator .. 99, 107
I
Identification Vehicle.................................. 549
Ignition switch (power switch) ............................................... 212Auto power off function ........ 216
Changing the power switch modes ................................ 215
If your vehicle has to be stopped in an emergency................. 502
Starting the hybrid system.... 212
Immobilizer system .................. 83
Indicators .................................. 91
Initialization Items to initialize................... 581
Parking Support Brake ......... 311
Power back door .................. 131
Power windows .................... 174
Tire pressure warning system........................................... 478
Inside rear view mirror........... 159
Instrument panel light control. 96
Intercooler ............................... 469 Intercooler coolan
t .................468
Capacity ...............................552
Checking ..............................468
Interior lights...........................418 Wattage ................................557
Interior lights list . ...................418
Intuitive parking assist...........294 Enabling/disabling the system...........................................294
Function................................294
Warning lights .......................512
Warning message.................296
J
Jam protection function Electronic sunshade .............181
Moon roof .............................177
Panoramic moon r oof ...........181
Power back door ..................129
Power running boards ..........120
Power windows ....................174
K
Keyless entry Smart key system .................139
Wireless remote control........ 113
Keys ......................................... 112 Battery-saving function .........140
Electronic key ....................... 112
If the electronic key does not operate properly .................535
If you lose your keys.............534
Key number plate ................. 112
Keyless entry ................ 115, 139
Mechanical key..................... 112
Power switch ........................212
Replacing the battery ...........493
Warning buzzer ....................140
Wireless remote control........ 113
Knee airbags .............................37