Page 547 of 668

5478-2. Steps to take in an emergency
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8
When trouble arises
WARNING
■If both the ABS and the brake system warning lights remain on
Stop your vehicle in a safe place immediately and contact your Toyota
dealer. The vehicle will become extrem ely unstable during braking, and the
ABS system may fail, which could cause an accident resulting in death or
serious injury.
■ When the electric power steerin g system warning light comes on
The steering wheel may become extremely heavy.
If the steering wheel becomes heavie r than usual when operating, hold
firmly and operate using more force than usual.
■
If the tire pressure warning light comes on
Be sure to observe the following precautions. Failure to do so could
cause a loss of vehicle control and result in death or serious injury.
Vehicles with standard tires:
●Stop your vehicle in a safe place as soon as possible. Adjust the tire
inflation pressure immediately.
●If the tire pressure warning light comes on even after tire inflation pres-
sure adjustment, it is probable that you have a flat tire. Check the tires.
If a tire is flat, change it with th e spare tire and have the flat tire
repaired by the nearest Toyota dealer.
●Avoid abrupt maneuvering and braking. If the vehicle tires deteriorate,
you could lose control of the steering wheel or the brakes.
Vehicles with run-flat tires:
●Decelerate to the lowest appropriate speed as soon as possible. Do
not drive over 50 mph (80 km/h).
●Check and adjust the tire inflation pressure immediately.
●If the tire pressure warning light comes on even after tire inflation pres-
sure adjustment, it is probable that you have a flat tire. Have the tire
replaced by the nearest Toyota dealer.
●Avoid abrupt maneuvering and braking. If the vehicle tires deteriorate,
you could lose control of the steering wheel or the brakes.
■If a blowout or sudden air leakage should occur
The tire pressure warning system may not activate immediately.
Page 551 of 668

5518-2. Steps to take in an emergency
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8
When trouble arises
Warning message and warning buzzer list
Warning messageDetails/Actions
(If equipped)
Indicates that:
• There is a high possibility of a frontal collision;or
• The pre-collision braking function is operating A buzzer also sounds
Slow the vehicle by applying the brakes.
(If equipped)
Indicates that the driver’s door was opened with
the shift position in any position other than P
A buzzer also sounds.
Shift the shift lever to P.
(If equipped)
Indicates that your vehicle is nearing the vehicle
ahead (in vehicle-to-vehicle distance mode)
A buzzer also sounds.
Slow the vehicle by applying the brakes.
Indicates that one or more of the doors is not fully
closed The system also indicates which doors are not
fully closed.
If the vehicle reaches a speed of 3 mph (5 km/h),
flashes and a buzzer sounds to indicate
that the door(s) are not yet fully closed.
Make sure that all the doors are closed.
(Flashes
rapidly)
(Flashes)
Page 553 of 668
5538-2. Steps to take in an emergency
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8
When trouble arises
Indicates a malfunction in the EPS (Electric
Power Steering) systemA buzzer also sounds.
Have the vehicle inspected by your Toyota
dealer.
Indicates a malfunction in:
• The ABS; or
• The brake assist system A buzzer also sounds.
Immediately stop the vehicle in a safe place
and contact your Toyota dealer. Continuing
to drive the vehicle may be dangerous.
Indicates a malfunction in:
• The VSC (Vehicle Stability Control) system;
• The TRAC (Traction Control) system; or
• The hill-start assist control system (if equipped)
Have the vehicle inspected by your Toyota
dealer.
Warning messageDetails/Actions
(U.S.A.) (Canada)
Page 554 of 668
5548-2. Steps to take in an emergency
SIENNA_OM_OM08013U_(U)
Indicates a malfunction in the tire pressure
warning system
Stop the vehicle in a safe place and turn
the engine switch off then “ON” position
(vehicles without a smart key system) or
IGNITION ON mode (vehicles with a
smart key system) again.
If the tire pressure warning indicator
flashes for 1 minute then illuminates,
have the vehicle inspected by your Toy-
ota dealer.
Indicates that:
• The brake fluid level is low; or
• The brake system is malfunctioning
Immediately stop the vehicle in a safe place
and contact your Toyota dealer. Continuing
to drive the vehicle may be dangerous.
Indicates that the vehicle is being driven at 3 mph
(5 km/h) or more with the parking brake still
engaged A buzzer also sounds.
Release the parking brake.
Warning messageDetails/Actions
(U.S.A.) (Canada)
(U.S.A.) (Canada) (Flashes)
Page 558 of 668
5588-2. Steps to take in an emergency
SIENNA_OM_OM08013U_(U)
(AWD models)
Indicates the Active Torque Control 4WD system
has overheatedA buzzer also sounds.
Immediately stop the vehicle in a safe place
and contact your Toyota dealer.
Indicates a malfunction in the brake override sys-
tem A buzzer also sounds.
Have the vehicle inspected by your Toyota
dealer.
(If equipped)
Indicates a malfunction in the Automatic High
Beam system
A buzzer also sounds.
Have the vehicle inspected by your Toyota
dealer.
Warning messageDetails/Actions
(Flashes)
Page 559 of 668
5598-2. Steps to take in an emergency
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8
When trouble arises
Indicates that the accelerator and brake pedal
are being depressed simultaneously
Release the accelerator or brake pedal.
Indicates that the washer fluid level is low
Add washer fluid.
Indicates that remaining fuel is approximately
3.0 gal. (11.4 L, 2.5 Imp.gal.) or less
Refuel the vehicle.
(U.S.A. only)
Indicates that all maintenance according to the
driven distance on the maintenance schedule
*
should be performed soon.
Comes on approximately 4500 miles (7200 km)
after the message has been reset.
If necessary, perform maintenance.
Warning messageDetails/Actions
(Flashes)
Page 564 of 668
5648-2. Steps to take in an emergency
SIENNA_OM_OM08013U_(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)
Page 565 of 668

5658-2. Steps to take in an emergency
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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. 546
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. 585), 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. 507)
Interior
buzzerExterior buzzerWarning messageDetails/Actions
(Flashes)
(Flashes)