
230
SIENNA_OM_OM08013U_(U)
4-2. Driving procedures
If the engine is stopped with the shift lever in a position other than P,
the engine switch will not be turned off but instead be turned to
ACCESSORY mode. Perform the following procedure to turn the
switch off:
Check that the parking brake is set.
Shift the shift lever to P.
Check that the indicator on th e engine switch is illuminated in
amber and then press the engine switch once.
Check that the indicator on the engine switch is off.
■Auto power off function
If the vehicle is left in ACCESSORY mode for more than 20 minutes or
IGNITION ON mode (the engine is not running) for more than an hour with
the shift lever in P, the engine switch will automatically turn off. However, this
function cannot entirely prevent battery discharge. Do not leave the vehicle
with the engine switch in ACCESSORY or IGNITION ON mode for long peri-
ods of time when the engine is not running.
■ Electronic key battery depletion
P. 107
■ Conditions affecting operation
P. 1 1 9
■ Note for the entry function
P. 145
■ If the engine does not start
The engine immobilizer system may not have been deactivated. ( P. 75)
Contact your Toyota dealer.
When stopping the engine with the shift lever in a position other
than P
1
2
3
4

SIENNA_OM_OM08013U_(U)
2314-2. Driving procedures
4
Driving
■Steering lock
After turning the engine switch off and opening and closing the doors, the
steering wheel will be locked due to the steering lock function.
Operating the engine switch again automatically cancels the steering lock.
■ When the steering lock cannot be released
■ Steering lock motor overheating prevention
To prevent the steering lock motor from overheating, the motor may be sus-
pended if the engine is turned on and off repeatedly in a short period of time.
In this case, refrain from operating the engine. After about 10 seconds, the
steering lock motor will resume functioning.
■ When the engine switch indicator flashes in amber
The system may be malfunctioning. Have the vehicle inspected by your Toy-
ota dealer immediately.
■ If the electronic key battery is depleted
P. 507
■ Operation of the engine switch
●When operating the engine switch, one short, firm press is enough. If the
switch is pressed improperly, the engine may not start or the engine switch
mode may not change. It is not necessary to press and hold the switch.
● If attempting to restart the engine immediately after turning the engine
switch off, the engine may not start in some cases. After turning the engine
switch off, please wait a few seconds before restarting the engine.
The green indicator light on the engine
switch will flash and a message will be
shown on the multi-information display.
Press the engine switch while turning the
steering wheel left and right.

232
SIENNA_OM_OM08013U_(U)
4-2. Driving procedures
WARNING
■When starting the engine
Always start the engine while sitting in the driver’s seat. Do not depress the
accelerator pedal while starting the engine under any circumstances.
Doing so may cause an accident resulting in death or serious injury.
■ Caution while driving
If the vehicle begins to slide due to engine failure or other circumstances, do
not lock or open the doors until the vehicle reaches a safe and complete
stop. Activation of the steering lock in this circumstance may lead to an
accident, resulting in death or serious injury.
■ Stopping the engine in an emergency
If you want to stop the engine in an emergency while driving the vehicle,
press and hold the engine switch for more than 2 seconds, or press it briefly
3 times or more in succession. ( P. 533)
However, do not touch the engine switch while driving except in an emer-
gency. Turning the engine off while driving will not cause loss of steering or
braking control, but the power assist to these systems will be lost. This will
make it more difficult to steer and brake, so you should pull over and stop
the vehicle as soon as it is safe to do so.
NOTICE
■ To prevent battery discharge
●Do not leave the engine switch in ACCESSORY or IGNITION ON mode
for long periods of time without the engine running.
● If the indicator on the engine switch is illuminated, the engine switch is not
off. When exiting the vehicle, always check that the engine switch is off.
● Do not stop the engine when the shift lever is in a position other than P. If
the engine is stopped in another shift lever position, the engine switch will
not be turned off but instead be turned to ACCESSORY mode. If the vehi-
cle is left in ACCESSORY mode, battery discharge may occur.
■ When starting the engine
●Do not race a cold engine.
● If the engine becomes difficult to start or stalls frequently, have the engine
checked immediately.
■ Symptoms indicating a malfunction with the engine switch
If the engine switch seems to be operating somewhat differently than usual,
such as the switch sticking slightly, there may be a malfunction.
Contact your Toyota dealer immediately.

SIENNA_OM_OM08013U_(U)
2434-3. Operating the lights and wipers
4
Driving
■Automatic light off system
Vehicles without a smart key system
● When the headlights are on: The headlights and tail lights turn off 30 sec-
onds after a door is opened and closed if the engine switch is turned to the
“ACC” or “LOCK” position. (The lights turn off immediately if on the
key is pressed after all the doors are locked.)
● When only the tail lights are on: The tail lights turn off automatically if the
engine switch is turned to the “ACC” or “LOCK” position and the driver’s
door is opened.
To turn the lights on again, turn the engine switch to the “ON” position, or turn
the light switch off once and then back to the
or .
Vehicles with a smart key system
● When the headlights are on: The headlights and tail lights turn off 30 sec-
onds after a door is opened and closed if the engine switch is turned to
ACCESSORY mode or turned off. (The lights turn off immediately if
on the key is pressed after all the doors are locked.)
● When only the tail lights are on: The tail lights turn off automatically if the
engine switch is turned to ACCESSORY mode or turned off and the driver’s
door is opened.
To turn the lights on again, turn the engine switch to IGNITION ON mode, or
turn the light switch off and then back to or .
■ Light reminder buzzer
Vehicles without a smart key system
A buzzer sounds when the engine switch is turned to the “LOCK” position, the
key is removed and the driver’s door is opened while the lights are turned on.
Vehicles with a smart key system
A buzzer sounds when the engine switch is turned off and the driver’s door is
opened while the lights are turned on.
■ Customization
Settings (e.g. light sensor sensitivity) can be changed.
(Customizable features: P. 629)
NOTICE
■To prevent battery discharge
Do not leave the lights on longer than necessary when the engine is not
running.

313
SIENNA_OM_OM08013U_(U)
4-6. Driving tips
4
Driving
Winter driving tips
●Use fluids that are appropriate to the prevailing outside tempera-
tures.
• Engine oil
• Engine coolant
• Washer fluid
● Have a service technician ins pect the condition of the battery.
● Have the vehicle fitted with four snow tires or purchase a set of tire
chains for the front tires.
Ensure that all tires are the same size and brand, and that chains match
the size of the tires.
Perform the following accordin g to the driving conditions:
● Do not try to forcibly open a window or move a wiper that is frozen.
Pour warm water over the frozen area to melt the ice. Wipe away
the water immediately to prevent it from freezing.
● To ensure proper operation of the climate control system fan,
remove any snow that has accumulated on the air inlet vents in
front of the windshield.
● Check for and remove any excess ice or snow that may have accu-
mulated on the exterior lights, ve hicle’s roof, chassis, around the
tires or on the brakes.
● Remove any snow or mud from the bottom of your shoes before
getting in the vehicle.
Carry out the necessary preparations and inspections before
driving the vehicle in winter. Always drive the vehicle in a man-
ner appropriate to the prevailing weather conditions.
Preparation for winter
Before driving the vehicle

318
SIENNA_OM_OM08013U_(U)
5-1. Basic Operations
Audio system types
Entune Audio
P. 3 1 9
Entune Audio Plus/Entune Pr emium Audio with Navigation
Owners of models equipped with a navigation system should refer to
the “NAVIGATION AND MULTIMEDIA SYSTEM OWNER’S
MANUAL”.
■ Using cellular phones
Interference may be heard through the audio system’s speakers if a cellular
phone is being used inside or close to the vehicle while the audio system is
operating.
NOTICE
■To prevent battery discharge
Do not leave the audio system on longer than necessary when the engine is
off.
■ To avoid damaging the audio system
Take care not to spill drinks or other fluids on the audio system.

SIENNA_OM_OM08013U_(U)
3255-1. Basic Operations
5
Audio system
Select to change on/off.
Select to change on/off.
■Using cellular phones
Interference may be heard through the audio system’s speakers if a cellular
phone is being used inside or close to the vehicle while the audio system is
operating.
■ Certification (caution)
Laser product
This product is a class 1 laser product.
Do not open the cover of the player or attempt to repair the unit yourself.
Refer servicing to qualified personnel.
●Laser products
This product utilizes a laser.
Use of controls or adjustments or performance of procedures other than
those specified herein may result in hazardous radiation exposure.
THE USE OF OPTICAL INSTRUMENTS WITH THIS PRODUCT WILL
INCREASE EYE HAZARD.
Random playback
Repeat play
NOTICE
■ To prevent battery discharge
Do not leave the audio system on longer than necessary when the engine is
off.
■ To avoid damaging the audio system
Take care not to spill drinks or other fluids on the audio system.

SIENNA_OM_OM08013U_(U)
3455-6. Using an external device
5
Audio system
■About iPod
●“Made for iPod” and “Made for iPhone” mean that an electronic accessory
has been designed to connect specifically to iPod or iPhone, respectively,
and has been certified by the developer to meet Apple performance stan-
dards.
● Apple is not responsible for the operation of this device or its compliance
with safety and regulatory standards. Please note that the use of this acces-
sory with iPod or iPhone may affect wireless performance.
● iPhone, iPod, iPod classic, iPod nano, and iPod touch are trademarks of
Apple Inc., registered in the U.S. and other countries. Lightning is a trade-
mark of Apple Inc.
■ iPod cover art
●Depending on the iPod and songs in the iPod, iPod cover art may be dis-
played.
● This function can be changed to on/off. (P. 329)
● It may take time to display iPod cover art, and the iPod may not be operated
while the cover art display is in process.
● Only iPod cover art that is saved in JPEG format can be displayed.
■ iPod functions
●When an iPod is connected and the audio source is changed to iPod mode,
the iPod will resume play from the same point in which it was last used.
● Depending on the iPod that is connected to the system, certain functions
may not be available. If a function is unavailable due to a malfunction (as
opposed to a system specification), disconnecting the device and recon-
necting it may resolve the problem.
● While connected to the system, the iPod cannot be operated with its own
controls. It is necessary to use the controls of the vehicle’s audio system
instead.
● When the battery level of an iPod is very low, the iPod may not operate. If
so, charge the iPod before use.
● Compatible models ( P. 347)