Page 153 of 872

153
1-4. Opening and closing the windows and moon roof
1
Before driving
SIENNA_OM_OM45483U_(U)
■
The moon roof can be operated when
Vehicles without a smart key system
The engine switch is in the “ON” position.
Vehicles with a smart key system
The “ENGINE START STOP” switch is in IGNITION ON mode.
■ Operating the moon roof af ter turning the engine off
Vehicles without a smart key system
The moon roof can be operated for approximately 45 seconds after the
engine switch is turned to the “ACC” or “LOCK” position. It cannot, however,
be operated once either front door is opened.
Vehicles with a smart key system
The moon roof can be operated for approximately 45 seconds after the
“ENGINE START STOP” switch is turned to ACCESSORY mode or turned
off. It cannot, however, be operated once either front door is opened.
■ Jam protection function
If an object is detected between the moon roof and the frame while the moon
roof is closing, travel is stopped and the moon roof opens slightly.
Page 163 of 872
163
1
1-6. Theft deterrent system
Before driving
SIENNA_OM_OM45483U_(U)
Alarm
: If equipped
The system sounds the alarm and flashes the lights when forced
entry is detected.
■ Triggering of the alarm
The alarm is triggered in the fo llowing situations when the alarm
is set:
● A locked door is unlocked or opened in any way other than
using the entry function (vehicles with a smart key system) or
wireless remote control. (The doors will lock again automati-
cally.)
● The hood is opened.
■ Setting the alarm system
Close the doors and hood,
and lock all the doors using
the entry function or wireless
remote control. The system
will be set automatically after
30 seconds.
The indicator light changes
from being on to flashing when
the system is set.
Page 164 of 872
164 1-6. Theft deterrent system
SIENNA_OM_OM45483U_(U)
■System maintenance
The vehicle has a maintenance-free type alarm system.
■ Items to check before locking the vehicle
To prevent unexpected triggering of the alarm and vehicle theft, make sure
of the following:
●Nobody is in the vehicle.
● The windows and moon roof (if equipped) are closed before the alarm is
set.
● No valuables or other personal items are left in the vehicle.
■ Deactivating or stopping the alarm
Do one of the following to deactivate or stop the alarm:
●Unlock the doors using the entry function or wireless remote
control.
● Vehicles without a smart key system: Turn the engine switch
to the “ACC” or “ON” position, or start the engine.
Vehicles with a smart key system: Turn the “ENGINE START
STOP” switch to ACCESSORY or IGNITION ON mode, or
start the engine.
(The alarm will be deactivated or stopped after a few sec-
onds.)
Page 165 of 872
165
1-6. Theft deterrent system
1
Before driving
SIENNA_OM_OM45483U_(U)
■
Triggering of the alarm
The alarm may be triggered in the following situations.
(Stopping the alarm deactivates the alarm system.)
■ Alarm-operated door lock
●When the alarm is operating, the doors are locked automatically to pre-
vent intruders.
● Do not leave the key inside the vehicle when the alarm is operating, and
make sure the key is not inside the vehicle when recharging or replacing
the battery.
●The doors are unlocked using the key.
● A person inside the vehicle opens a
door or hood.
● The battery is recharged or replaced
when the vehicle is locked.
Page 215 of 872
215
2-1. Driving procedures
2
When driving
SIENNA_OM_OM45483U_(U)
Starting off on a steep uphill
Make sure that the parking brake is set and shift the shift lever
to D.
Gently depress the accelerator pedal.
Release the parking brake.
■Parking the vehicle
With the shift lever in D, depress the brake pedal.
Set the parking brake. ( P. 244)
Shift the shift lever to P. ( P. 238)
If parking on a hill, block the wheels as needed.
Vehicles without a smart key system:
Turn the engine switch to the “LOCK” position and stop the
engine.
Vehicles with a smart key system:
Press the “ENGINE START STOP” switch to stop the
engine.
Lock the door, making sure that you have the key on your
person.
STEP1
STEP2
STEP3
STEP4
STEP5
STEP1
STEP2
STEP3
Page 229 of 872
229
2-1. Driving procedures
2
When driving
SIENNA_OM_OM45483U_(U)
■
Turning the key from “ACC” to “LOCK”
Shift the shift lever to P.
■ If the engine does not start (vehic les with engine immobilizer system)
The engine immobilizer system may not have been deactivated. ( P. 160)
■ When the steering lock cannot be released
■ Key reminder function
A buzzer sounds if the driver’s door is opened while the engine switch is in
the “LOCK” or “ACC” position to remind you to remove the key\
.
STEP1
Push in the key and turn it to the “LOCK”
position.STEP2
When starting the engine, the engine
switch may seem stuck in the “LOCK”
position. To free it, turn the key while turn-
ing the steering wheel slightly left and
right.
Page 235 of 872

235
2-1. Driving procedures
2
When driving
SIENNA_OM_OM45483U_(U)
■
Electronic key battery depletion
P. 5 0
■ Conditions aff ecting operation
P. 4 6
■ Note for the entry function
P. 4 7
■ If the engine does not start
The engine immobilizer system may not have been deactivated. ( P. 160)
■ Steering lock
After turning the “ENGINE START STOP” switch off and opening and closing
the doors, the steering wheel will be locked due to the steering lock function.
Operating the “ENGINE START STOP” 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.
The green indicator light on the “ENGINE
START STOP” switch will flash and a
message will be shown on the multi-infor-
mation display. Press the “ENGINE
START STOP” switch while turning the
steering wheel left and right.
Page 236 of 872

236 2-1. Driving procedures
SIENNA_OM_OM45483U_(U)
■When the “ENGINE START STOP” s witch indicator flashes in amber
The system may be malfunctioning. Have the vehicle inspected by your
Toyota dealer immediately.
■ If the electronic key battery is depleted
P. 708
CAUTION
■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 acci-
dent, 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 START STOP” switch for more than 2 seconds,
or press it briefly 3 times or more in succession. ( P. 795)
However, do not touch the “ENGINE START STOP” switch while driving
except in an emergency. 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.