2021 TOYOTA SIENNA HYBRID lock

5037-2. Steps to take in an emergency
7
When trouble arises
Vehicles without spare tire
1 Remove the cover of the
emergency tire puncture
repair kit. ( P.484)
2 Pull the lever.
Pull the lever to unlock the fuel filler
door and it will be r eady to open as
usual.
Vehicles with spare tire
1 Fold down the third seat.
( P.174)
2 Remove the cover of the
compact spare tire.
3 Pull the lever.
Pull the lever to unlock the fuel filler
door and it will be ready to open as
usual.
If the fuel filler door
cannot be opened
If the fuel filler door opener
switch cannot be operated,
the following procedure can
be used to open the fuel
filler door.
Opening the fuel filler
door

5047-2. Steps to take in an emergency
■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.544)
●Check if battery-saving mode is
set. If it is set, cancel the function.
( P.166)
Use the mechanical key
( P.131) in order to perform the following operations.
1
Locks all the doors
2 Unlocks the door
■Key linked functions
The opening and closing of the
power windows and moon roof can
be linked to key operation by a cus-
tomized setting at your Toyota
dealer.
1 Closes the windows and the
moon roof
* (turn and hold)
2 Opens the windows and the
moon roof
* (turn and hold)
*: If equipped
If the electronic key
does not op erate prop-
erly
If communication between
the electronic key and vehi-
cle is interrupted ( P.166)
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
electronic keys provided with your
vehicle to your Toyota dealer.
Locking and unlocking
the doors

5067-2. Steps to take in an emergency
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.
1Vehicles with alarm: Confirm
that the electronic key is
being carried.
When connecting the jumper (or
booster) cables, depending on the
situation, the ala rm may activate and the doors locked. (
P.90)
2 Open the hood ( P.413) and
fuse box cover.
Push claw , and to com-
pletely release the lock, and then lift
up the cover.
3 Open the exclusive jump
starting terminal cover.
4 Connect a positive jumper cable 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
If the 12-volt battery 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
Toyota dealer or a qualified
repair shop.
Restarting the hybrid sys-
tem
ABC
A
B
C

5087-2. Steps to take in an emergency
possible.
■Starting the hybrid system
when the 12-volt battery is dis-
charged
The hybrid system cannot be
started by push-starting.
■To prevent 12-vol t battery dis-
charge
●Turn off the headlights and the
audio system while the hybrid sys-
tem is off.
●Turn off any unnec essary 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 your Toyota dealer.
●Some systems may require initial-
ization. ( P.554)
■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 certa in 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.505). 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.
■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 (60Ah) or greater, and
performance rating (CCA) is
equivalent (563A) 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 12-volt battery with a han-
dle. If a 12-volt battery without a
handle is used, removal is more
difficult.
●When removing the 12-volt bat-

5208-1. Specifications
■Engine number
The engine number is stamped on the engine block as shown.
Front
Engine
Model2.5 L 4-cylinder (A25A-FXS)
Type4-cylinder in line
, 4-cycle, gasoline
Bore and stroke3.44  4.07 in. (87.5  103.4 mm)
Displacement151.8 cu. in. (2487 cm3)
Valve clearanceAutomatic adjustment
Fuel
Fuel typeUnleaded gasoline only
Octane Rating87 (Research Octane Number 91) or
higher
Fuel tank capacity (Reference)18 gal. (68.2 L, 15 Imp.gal.)
Electric motor (traction motor)
TypePermanent magnet synchronous motor
Maximum output134 kW
Maximum torque199 ft•lbf (270 N•m, 27.5 kgf•m)

5438-2. Customization
8
Vehicle specifications
*2: The default setting varies according to country.
*3: Vehicles with 7-inch display only
*4: Vehicles with 4.2-inch display only
■Head-up Display* ( P.118)
*: If equipped
■Door lock ( P.132, 504)
FunctionDefault settingCustomized
setting
Head-up displayOnOff–O–
Gauge informationHybrid Sys-
tem IndicatorTachometer–O–No content
Route guidance to destina-
tionOnOff–O–
Compass*OnOff–O–
Driving support system dis-
playOnOff–O–
Audio system operation sta-
tusOnOff–O–
RotationHorizontal positionRotating coun- terclock-
wise/clockwise
–O–
FunctionDefault settingCustomized setting
Unlocking using a mechani-
cal key
Driver’s door unlocked in
first step, all doors
unlocked in
second step
All doors
unlocked in first step
––O
Automatic door locking func-
tion
Shift position linked door
locking opera- tionOff
O–OSpeed linked door locking operation
ABC
ABC

5448-2. Customization
■Smart key system and wireless remote control (P.130, 164)
■Smart key system ( P.164)
*: This setting can be changed when the smart door unlocking sett ing is set
to Driver’s door.
Automatic door unlocking
function
Shift position linked door unlocking operationOff
O–ODriver’s door linked door unlocking operation
FunctionDefault settingCustomized setting
Operation signal (emer-
gency flashers)OnOffO–O
Operation buzzer volume5OffO–O1 to 7
Time elapsed before the
automatic door lock function
is activated if a door is not
opened after being unlocked
60 seconds
Off
O–O30 seconds
120 seconds
Open door reminder buzzer
(When locking the vehicle)OnOff––O
FunctionDefault settingCustomized setting
Smart key systemOnOff––O
Smart door unlockingDriver’s doorAll the doorsO–O
Number of consecutive door
lock operations2 timesAs many as desired––O
Time elapsed before unlock-
ing all the door when gripping
and holding the driver’s door
handle
* (with entry function)
2 seconds
Off
––O1.5 seconds
2.5 seconds
Power switch illuminationOnOff––O
FunctionDefault settingCustomized settingABC
ABC
ABC

5458-2. Customization
8
Vehicle specifications
■Wireless remote control (P.130)
*: If equipped
■Power sliding doors (P.137)
FunctionDefault settingCustomized
setting
Wireless remote controlOnOff––O
Unlocking operation
Driver’s door unlocked in
first step, all doors
unlocked in
second step
All doors
unlocked in first step
O–O
Theft deterrent panic modeOnOff––O
Locking operation when door
openedOnOffO–O
Power sliding door operationPress and hold
Off
––OOne short press
Press twice
Power back door operation*Press and hold
Off
––OOne short press
Press twice
The function that activates
the switch of the wire-
less remote control when
locking the door
* ( P.153)
On (Unlocking
all the door)
Off
––OOn (Unlocking back door only)
FunctionDefault settingCustomized setting
Power sliding door operation
(inside power sliding door
switches)
Press and holdPress twice––O
Operation buzzer volume31–O–2
ABC
ABC