2015 TOYOTA SIENNA engine

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4-2. Driving procedures
■Turning the key from “ACC” to “LOCK”
Shift the shift lever to P. ( P. 231)
■ If the engine does not start
The engine immobilizer system may not have been deactivated. ( P. 75)
Contact your Toyota dealer.
■ 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.Push in the key and turn it to the
“LOCK” position.
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.
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 when driving
Do not turn the engine switch to the “LOCK” position while driving. If, in an
emergency, you must turn the engine off while the vehicle is moving, turn
the engine switch only to the “ACC” position to stop the engine. An accident
may result if the engine is stopped while driving. ( P. 529)
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Driving
NOTICE
■To prevent battery discharge
Do not leave the engine switch in the “ACC” or “ON” position for long peri-
ods of time without the engine running.
■ When starting the engine
● Do not crank the engine for more than 30 seconds at a time. This may
overheat the starter and wiring system.
● Do not race a cold engine.
● If the engine becomes difficult to start or stalls frequently, have the engine
checked immediately.

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4-2. Driving procedures
Engine (ignition) switch (vehicles with a
smart key system)
Check that the parking brake is set.
Check that the shift lever is set in P.
Firmly depress the brake pedal.
The engine switch indicator will turn green. If the indicator does not turn
green, the engine cannot be started.
Press the engine switch.
The engine will crank until it starts
or for up to 30 seconds, whichever
is less.
Continue depressing the brake
pedal until the engine is completely
started.
The engine can be started from
any engine switch mode.
Performing the following operations when carrying the elec-
tronic key on your person starts the engine or changes engine
switch modes.
Starting the engine
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2274-2. Driving procedures
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Driving
Stop the vehicle.
Shift the shift lever to P.
Set the parking brake. (P. 236)
Press the engine switch.
Release the brake pedal and check t hat the indicator on the engine
switch is off.
Modes can be changed by pressing th e engine switch with the brake
pedal released. (The mode changes ea ch time the switch is pressed.)
Off
*
Emergency flashers can be used.
ACCESSORY mode
Some electrical components such
as the audio system can be used.
The engine switch indicator turns
amber.
IGNITION ON mode
All electrical components can be
used.
The engine switch indicator turns
amber.
*: If the shift lever is in a position other than P when turning off the
engine, the engine switch will be
turned to ACCESSORY mode, not
to off.
Stopping the engine
Changing engine switch modes
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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. 144
■ 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
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2294-2. Driving procedures
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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. 503
■ 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.

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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. 529)
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.

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Driving
Automatic transaxle
While the engine switch is in the “ON” position (vehicles without a
smart key system) or IGNITION ON mode (vehicles with a smart
key system), move the shift lever with the brake pedal
depressed.
When shifting the shift lever between P and D, make sure that the vehi-
cle is completely stopped.
Shifting the shift lever