Page 552 of 664

5528-2. Steps to take in an emergency
SIENNA_OM_01999-08001_(U)
(If equipped)
Indicates that a Blind Spot Monitor sensor or the
surrounding area on the bumper is dirty or cov-
ered with iceA buzzer also sounds.
Clean the sensor and its surrounding area
on the bumper.
Indicates a malfunction in:
• The cruise control system; or
• The dynamic radar cruise control system (if equipped)
Press the “ON/OFF” button once to deactivate
the system, and then press the button again to
reactivate the system.
A buzzer also sounds.
Have the vehicle inspected by your Toyota
dealer.
(If equipped)
Indicates a malfunction in the PCS (Pre-Collision
system)
A buzzer also sounds.
Have the vehicle inspected by your Toyota
dealer.
(If equipped)
Indicates a malfunction in the BSM (Blind Spot
Monitor) system
A buzzer also sounds.
Have the vehicle inspected by your Toyota
dealer.
(If equipped)
Indicates a malfunction in the steering lock sys-
tem
Have the vehicle inspected by your Toyota
dealer.
Warning messageDetails/Actions
(Flashes)
(Flashes)
Page 553 of 664
5538-2. Steps to take in an emergency
SIENNA_OM_01999-08001_(U)
8
When trouble arises
Indicates abnormal engine oil pressureA buzzer also sounds.
Immediately stop the vehicle in a safe place
and contact your Toyota dealer.
(AWD models)
Indicates a malfunction in the Active Torque
Control 4WD system
A buzzer also sounds.
Have the vehicle inspected by your Toyota
dealer.
Vehicles without a smart key system:
Indicates that 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:
Indicates that the engine switch is turned off and
the driver’s door is opened while the lights are
turned on. A buzzer also sounds.
Turn the lights off.
Warning messageDetails/Actions
(Flashes)
Page 559 of 664

5598-2. Steps to take in an emergency
SIENNA_OM_01999-08001_(U)
8
When trouble arises
Once3 times
The electronic key was carried
outside the vehicle and a door
other than the driver’s door was
opened and closed while the
engine switch was in a mode
other than off.
Bring the electronic key
back into the vehicle.
The electronic key was carried
outside the vehicle and the
driver’s door was opened and
closed while the shift position P
was selected without turning off
the engine switch.
Turn the engine switch off.
Bring the electronic key
back into the vehicle.
Once
Sounds
once for
5 sec-
onds
An attempt was made to exit
the vehicle with the electronic
key and lock the doors without
first turning the engine switch
off.
Turn the engine switch off
and lock the doors again.
Once
An attempt was made to turn
the engine switch off when the
shift position was not in P.
To turn off the engine, first
shift the shift position to P
and then turn the engine
switch off.
Interior
buzzerExterior buzzerWarning messageDetails/Actions
(Flashes)
(Displayed alternately)
(Flashes)
(Flashes)
Page 560 of 664
5608-2. Steps to take in an emergency
SIENNA_OM_01999-08001_(U)
Once
Sounds
once for
5 sec-
onds
• An attempt was made to lockthe doors using the smart key
system while the electronic
key was still inside the vehi-
cle.
• An attempt was made to lock either front door by opening a
door and putting the inside
lock button into the lock posi-
tion, then closing the door
with the electronic key still
inside the vehicle.
Retrieve the electronic key
from the vehicle and lock
the doors again.
Once
• When the doors were
unlocked with the mechanical
key and then the engine
switch was pressed, the elec-
tronic key could not be
detected in the vehicle.
• The electronic key could not
be detected in the vehicle
even after the engine switch
was pressed two consecu-
tive times.
Touch the electronic key to
the engine switch while
depressing the brake
pedal.
Interior
buzzerExterior buzzerWarning messageDetails/Actions
(Flashes)
(Flashes)
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5618-2. Steps to take in an emergency
SIENNA_OM_01999-08001_(U)
8
When trouble arises
■Messages displays
The message illustrations used are intended as examples, and may differ
from the image that is actually displayed on the multi-information display.
■ Warning buzzer
P. 542
Once
The driver’s door was opened
and closed with the engine
switch turned off and then the
engine switch was put in
ACCESSORY mode twice with-
out the engine being started.
Press the engine switch
while depressing the brake
pedal.
During a engine starting proce-
dure in the event that the elec-
tronic key was not functioning
properly ( P. 581), the engine
switch was touched with the
electronic key.
Press the engine switch
within 10 seconds of the
buzzer sounding.
Once
The steering lock could not be
released within 3 seconds of
the engine switch being
pressed.
Press the engine switch
while depressing the brake
pedal and moving the
steering wheel left and
right.
Once
The electronic key has a low
battery.
Replace the electronic key
battery. ( P. 503)
Interior
buzzerExterior buzzerWarning messageDetails/Actions
(Flashes)
(Flashes)
Page 568 of 664
5688-2. Steps to take in an emergency
SIENNA_OM_01999-08001_(U)
Slide the front passenger’s seat to the frontmost lock position and
the right side second seat to the rearmost lock position so they will
not interfere with the jack handle.
Open the right side sliding door
and you will find the flap on the
floor. Pull back the flap to find
the spare tire clamp bolt.
Attach the adapter socket over
the spare tire clamp bolt.
Connect the jack handle and
the adapter socket. Turn the
jack handle.
The tire will be lowered com-
pletely to the ground.
Take the spare tire out from
underneath the vehicle and
remove the holding bracket.
Taking out the spare tire
1
2
3
4
WARNING
■When storing the compact spare tire
Be careful not to catch fingers or other body parts between the compact
spare tire and the body of the vehicle.
Page 574 of 664
5748-2. Steps to take in an emergency
SIENNA_OM_01999-08001_(U)
Pull strap to tighten and secure
tire.
Lay down the tire with the outer
side (valve stem) facing up, and
install the holding bracket.
Turn the jack handle clockwise
to raise the tire until the tire is in
the correct position as the jack
handle skips.
Stow the tools.5
Stowing the spare tire
Valve stem1
2
3
Page 579 of 664

5798-2. Steps to take in an emergency
SIENNA_OM_01999-08001_(U)
8
When trouble arises
One of the following may be the cause of the problem:
●One or both of the battery terminals may be disconnected.
● The battery may be discharged. ( P. 583)
● There may be a malfunction in the steering lock system (vehicle
with a smart key system).
Contact your Toyota dealer if the problem cannot be repaired, or if repair
procedures are unknown.
When the engine does not start, the following steps can be used as an
interim measure to start the engine if the engine switch is functioning
normally:
Set the parking brake.
Shift the shift lever to P.
Turn the engine switch to ACCESSORY mode.
Press and hold the engine switch for about 15 seconds while
depressing the brake pedal firmly.
Even if the engine can be started using the above steps, the system
may be malfunctioning. Have the v ehicle inspected by your Toyota
dealer.
The starter motor does not turn ov er, the interior lights and head-
lights do not turn on, or the horn does not sound.
Emergency start function (vehicles with a smart key system)
1
2
3
4