Page 781 of 872
5
When trouble arises
781
5-2. Steps to take in an emergency
SIENNA_OM_OM45483U_(U)
If the electronic key does not operate properly
Locking and unlocking the doors and key linked functions
Using the mechanical key
( P. 33) in order to perform
the following operations.
Locks all doors
Unlocks all doors
Turning the key rearward unlocks
the driver’s door. Turning the key
once again within 3 seconds
unlocks the other doors.
: If equipped
For vehicles with a smart key system : If communication between the
electronic key and vehic le is interrupted (P. 36) or the electronic
key cannot be used because the batt ery is depleted, the smart key
system and wireless remote contro l cannot be used. In such cases,
the doors can be opened or the engine can be started by following
the procedure below.
Page 783 of 872
5
When trouble arises
783
5-2. Steps to take in an emergency
SIENNA_OM_OM45483U_(U)
■
Stopping the engine
Shift the shift lever to P and press the “ENGINE START STOP” switch as
you normally do when stopping the engine.
■ Replacing the key battery
As this above procedure is a temporary measure, it is recommended that the
electronic key battery be replaced immediately when the battery depletes.
(P. 708)
■ Alarm (if equipped)
Using the mechanical key to lock the doors will not set the alarm system.
If a door is unlocked using the mechanical key when the alarm system is set,
the alarm may be triggered. ( P. 163)
■ Changing “ENGINE START STOP” switch modes
Within 10 seconds of the buzzer sounding, release the brake pedal and
press the “ENGINE START STOP” switch.
The engine does not start and modes will be changed each time the switch
is pressed. ( P. 233)
Page 787 of 872

5
When trouble arises
787
5-2. Steps to take in an emergency
SIENNA_OM_OM45483U_(U)
■
Starting the engine when the battery is discharged
The engine cannot be started by push-starting.
■ To prevent battery discharge
●Turn off the headlights and the audio system while the engine is off.
● Turn off any unnecessary electrical components when the vehicle is run-
ning at a low speed for an extended period, such as in heavy traffic.
■ When the battery is removed or discharged
●The power sliding door (if equipped) must be initialized. ( P. 74)
● The power back door (if equipped) must be initialized. ( P. 87)
● Make sure that the key is not inside the vehicle when recharging or
replacing the battery. The key may be locked in the vehicle if the alarm is
activated. ( P. 165)
■ Charging the battery
The electricity stored in the battery will discharge gradually even when the
vehicle is not in use, due to natural discharge and the draining effects of cer-
tain electrical appliances. If the vehicle is left for a long time, the battery may
discharge, and the engine may be unable to start. (The battery recharges
automatically during driving.)
Page 828 of 872
828
SIENNA_OM_OM45483U_(U)
6-2. Customization
Customizable features
ItemFunctionDefault settingCustomizedsetting
Smart key
system
*1
and
wireless
remote
control
(
P. 3 653) Unlocking operation
*2
Drivers door
unlocked in one step, all doors
unlocked in two steps All doors
unlocked in one step
Automatic door lock
function to be activated
if door is not opened
after being unlocked
*2
On Off
Time elapsed before
automatic door lock
function is activated if
door is not opened after
being unlocked
*2
60 seconds 30 seconds
120 seconds
Operation signal
*2
(Emergency flashers) On Off
Operation signal
(Buzzer) On Off
Your vehicle includes a variety of
electronic features that can be
personalized to suit your preferences. Programming these
preferences requires specialized eq uipment and may be performed
by your Toyota dealer.
Some function settings are changed simultaneously with other functions
being customized. Contact your Toyota dealer for further details.
Page 829 of 872
829
6-2. Customization
6
Vehicle specifications
SIENNA_OM_OM45483U_(U)
Smart key
system
*1
and
wireless
remote
control
(
P. 3 653) Open door warning
function
(when locking the vehi-
cle)
On Off
Wireless
remote
control
(
P. 5 3 ) Wireless remote control On Off
Operation signal
(Buzzer volume)
Level 7Level 1 to 6
Off
Panic function OnOff
Power sliding door
operation*1
On Off
Press and hold Press twice
One short press
Power back door oper-
ation
*1
On Off
Press and hold Press twice
One short press
Smart key
system
*1
( P. 36) Smart key system On Off
Number of permissible
times of continuous
smart lock
Twice Unlimited
ItemFunctionDefault settingCustomized
setting
Page 830 of 872
830 6-2. Customization
SIENNA_OM_OM45483U_(U)
Door lock
(
P. 60)Unlocking using a key
Drivers door
unlocked in one step, all doors
unlocked in two steps All doors
unlocked in one step
Speed-detecting auto-
matic door lock func-
tion
*2Off On
Opening drivers door
unlocks all doors
*2Off On
Shifting gears to P
unlocks all doors
*2On Off
Shifting gears to posi-
tion other than P locks
all doors
*2On Off
ItemFunctionDefault settingCustomized
setting
Page 832 of 872
832 6-2. Customization
SIENNA_OM_OM45483U_(U)
*1: If equipped
*2: For vehicles with the multi-information display, the setting can be changedby operating the multi-information display. (
P. 833)
Illumination
(
P. 582)
Time elapsed before
lights turn off
15 seconds7.5 seconds
30 seconds
Operation when the
doors are unlocked On Off
Operation after the
engine switch is turned
to the “LOCK” position
(vehicles without a
smart key system) or
the “ENGINE START
STOP” switch is turned
to OFF (vehicles with a
smart key system) On Off
Rear ceiling light
*1On Off
Outer foot lights
*1On Off
Intuitive
parking
assist
*1
(
P. 318) Buzzer volume Max. Min. to Max.
Seat belt
reminder
(
P. 747) Vehicle speed linked
seat belt reminder
buzzer
On Off
ItemFunctionDefault settingCustomized
setting
Page 857 of 872

857
Alphabetical index
SIENNA_OM_OM45483U_(U)
Back-up lights
Replacing light bulbs ............ 724
Wattage ................................ 809
Back door Back door ............................... 82
Wireless remote control.......... 53
Battery Checking .............................. 683
If the vehicle has discharged battery ............. 784
Preparing and checking before winter ...................... 369
Blind Spot Monitor .................. 348
Bluetooth
® audio ..................... 486
Bluetooth® phone .................... 545
Bottle holder ............................ 598
Brake Fluid...................................... 681
Parking brake ....................... 244
Brake assist ............................. 331
Break-in tips ............................ 216
Brightness control Instrument light control ......... 247
BSM .......................................... 348
Care Exterior ................................. 648
Interior .................................. 653
Seat belts ............................. 654
Cargo capacity ........................ 360
Cargo hooks ............................ 624
CD changer .............................. 438
CD player ................................. 438
Chains ...................................... 369 Child restraint system
Booster seats, definition ........191
Booster seats, installation .....196
Convertible seats, definition .............................191
Convertible seats,
installation ...........................196
Front passenger occupant classification system ........... 185
Infant seats, definition ...........191
Infant seats, installation.........196
Installing CRS with LATCH anchors ..........199, 201
Installing CRS with seat belts ............................203
Installing CRS with top tether strap............207, 208
Child safety
Airbag precautions ................179
Back door precautions ............88
Battery precautions .......685, 788
Child restraint system............191
Child-protectors .......................71
How your child should wear the seat belt ........................133
Installing child restraints ........196
Moon roof precautions ..........155
Power window lock switch.....145
Power window precautions ...148
Removed key battery precautions .........................710
Seat belt extender precautions .........................137
Seat belt precautions ............134
Seat heater precautions ........615
Child-protectors .........................71
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