Page 511 of 672
511
SIENNA_OM_OM08007U_(U)
7-3. Do-it-yourself maintenance
7
Maintenance and care
Wireless remote control/electronic key
batter y
●Flathead screwdriver
● Lithium battery CR2032
Vehicles without a smart key system
Remove the cover using a coin
protected with tape etc.
Remove the depleted battery.
Insert a new battery with the “+”
terminal facing up.
Replace the battery with a new one if it is depleted.
You will need the following items:
Replacing the battery
1
2
Page 512 of 672
512
SIENNA_OM_OM08007U_(U)
7-3. Do-it-yourself maintenance
Vehicles with a smart key system
Take out the mechanical key.
Remove the cover.
To prevent damage to the key,
cover the tip of the screwdriver with
a rag.
Remove the depleted battery.
Insert a new battery with the “+”
terminal facing up.
■Use a CR2032 lithium battery
●Batteries can be purchased at your Toyota dealer, local electrical appliance
shops or camera stores.
● Replace only with the same or equivalent type recommended by the manu-
facturer.
● Dispose of used batteries according to local laws.
■ If the key battery is depleted
The following symptoms may occur.
●The smart key system (if equipped) and wireless remote control will not
function properly.
● The operational range will be reduced.
1
2
3
Page 513 of 672
SIENNA_OM_OM08007U_(U)
5137-3. Do-it-yourself maintenance
7
Maintenance and care
WARNING
■Removed battery and other parts
These parts are small and if swallowed by a child, they can cause choking.
Keep away from children. Failure to do so could result in death or serious
injury.
NOTICE
■For normal operation after replacing the battery
Observe the following precautions to prevent accidents.
●Always work with dry hands.
Moisture may cause the battery to rust.
● Do not touch or move any other components inside the remote control.
● Do not bend either of the battery terminals.
Page 588 of 672

588
SIENNA_OM_OM08007U_(U)
8-2. Steps to take in an emergency
If the electronic key does not operate
properly (vehicles with a smar t key system)
Using the mechanical key
( P. 106) in order to perform
the following operations.
Locks all the doors
Unlocks the door(s)
Turning the key rearward unlocks
the driver’s door. Turning the key
once again within 3 seconds
unlocks the other doors.
Shift the shift lever to P and apply the brakes.
Touch the Toyota emblem side
of the electronic key to the
engine switch.
An alarm will sound to indicate that
the start function cannot detect the
electronic key that is touched to the
engine switch if any of the doors is
opened and closed while the key is
touched to the switch.
Press the engine switch within 10 seconds after the buzzer sounds,
keeping the brake pedal depressed.
In the event that the engine switch cannot be operated, contact your
Toyota dealer.
If communication between the electronic key and vehicle is
interrupted ( P. 119) or the electronic key cannot be used
because the battery is depleted, the smart key system and wire-
less remote control cannot be used. In such cases, the doors
can be opened or the engine can be started by following the pro-
cedure below.
Locking and unlocking the doors and key linked functions
1
2
Starting the engine
1
2
3
Page 628 of 672
628
SIENNA_OM_OM08007U_(U)
9-2. Customization
■Door lock (P. 110, 588)
■Smart key system* and wireless remote control ( P. 105, 143)
*: If equipped
FunctionDefault settingCustomized
setting
Unlocking using a key Driver’s door
unlocked in
one step, all
doors unlocked in two steps All doors
unlocked in
one step ––O
Automatic door lock
Shifting the
shift lever to
position other than P
Off
O—O
Vehicle speed
is approxi-
mately 12 mph (20 km/h) or
higher
Automatic door unlockShifting the
shift lever to POff
O—ODriver’s door is opened
123
FunctionDefault settingCustomized setting
Operation signal (buzzer
volume) Level 7Off
O–O
Level 1 to 6
Operation signal
(Emergency flashers) On Off O – O
Time elapsed before the
automatic door lock func-
tion is activated if door is
not opened after being
unlocked 60 seconds
Off
O–O
30 seconds
120 seconds
Open door warning buzzer On Off – – O
123
Page 629 of 672
SIENNA_OM_OM08007U_(U)
6299-2. Customization
9
Vehicle specifications
■Smart key system* ( P. 143)
*: If equipped
■
Wireless remote control ( P. 105)
*: If equipped
FunctionDefault settingCustomized
setting
Smart key system OnOff O – O
Number of consecutive
door lock operations 2 timesAs many as
desired ––O
123
FunctionDefault settingCustomized
setting
Wireless remote control OnOff – – O
Unlocking operation Driver’s door
unlocked in
one step, all
doors unlocked
in two steps All doors
unlocked in one step O–O
Power sliding door
operation
*Press and hold
Off
––O
Press twice
One short press
Power back door
operation
*Press and hold
Off
––O
Press twice
One short press
Alarm (panic mode) OnOff – – O
123
Page 662 of 672

662Alphabetical index
SIENNA_OM_OM08007U_(U)
Keyless entrySmart key system ................. 143
Wireless remote control ........ 105
Keys Battery-saving function ......... 145
Electronic key ....................... 104
Engine switch................ 225, 228
If you lose your keys ............. 107
If the electronic key does
not operate properly ........... 588
Key number plate.................. 104
Keyless entry
................... 105, 110, 121, 133
Keys ...................................... 104
Mechanical key ..................... 104
Replacing the battery ............ 511
Warning buzzer..................... 144
Wireless remote control ........ 105
Knee airbags .............................. 36
Language (multi-information display)................................... 625
LATCH anchors ......................... 60
Lever Auxiliary catch lever .............. 483
Hood lock release lever ........ 483
Shift lever .............................. 233
Tilt and telescopic steering lock release lever ............... 177
Turn signal lever ................... 240
Wiper lever.................... 253, 257 License plate lights
Light switch ........................... 242
Replacing light bulbs ............ 531
Wattage ................................ 608
Light bulbs
Replacing.............................. 517
Wattage ................................ 608
Lights
Automatic High Beam system .......... ...................... 247
Door courtesy lights .............. 427
Engine switch light ................ 427
Fog light switch ..................... 252
Headlight switch ................... 242
Illuminated entry system ....... 429
Interior light switch ................ 428
Luggage compartment
light..................................... 137
Outer foot lights .................... 427
Personal light switch ............. 428
Rear ceiling lights ................. 429
Replacing light bulbs ............ 517
Turn signal lever ................... 240
Vanity lights .......................... 443
Wattage ................................ 608
Load capacity .......................... 209
Lock steering column ..... 226, 231
Luggage compartment light Switch ................................... 137
Wattage ................................ 608
K
L
Page 664 of 672

664Alphabetical index
SIENNA_OM_OM08007U_(U)
Parking assist sensors (intuitive parking assist) ....... 279
Parking brake ........................... 241 Operation .............................. 241
Parking brake engaged warning
buzzer/message ......... 545, 558
Parking lights
Light switch ........................... 242
Replacing light bulbs..... 525, 531
Wattage ................................ 608
PCS (Pre-Collision System) Function ................................ 302
Pre-collision braking off switch ................................. 303
Warning light ......................... 546
Warning message ............. 555, 560, 564
Personal lights Switch ................................... 428
Wattage ................................ 608
Power back door...................... 133
Power outlets ........................... 445
Power windows Jam protection function......... 185
Operation .............................. 184
Window lock switch............... 184
Pre-collision system (PCS) Function ................................ 302
Pre-collision braking off switch ................................. 303
Warning light ......................... 546
Warning message ............. 555, 560, 564 Quarter windows ..................... 187
Radar cruise control
(dynamic radar cruise
control)................................... 266
Radiator .................................... 491
Radio
*...................................... 340
Rear automatic air conditioning system ............. 421
Rear ceiling light ..................... 429
Rear seat
Adjustment............................ 152
Folding third seats ........ 159, 160
Installing second seats ......... 158
Removing second seats ....... 156
Stowing third seats ....... 161, 163
Rear seat entertainment system
*
Rear turn signal lights Replacing light bulbs ............ 528
Turn signal lever ................... 240
Wattage ................................ 608
Rear view mirror Compass .............................. 457
Inside rear view mirror .......... 179
Outside rear view mirrors ..... 181
Rear view monitor system ...... 287
Rear window defogger ............ 416
Rear window wiper .................. 257
Replacing Electronic key battery ........... 511
Fuses .................................... 514
Light bulbs ............................ 517
Rear seat entertainment system control battery
*
Tires...................................... 572
Wireless remote control battery ................................ 511
PQ
R