2015 TOYOTA SIENNA engine

537
SIENNA_OM_01999-08001_(U)
8
When trouble arises
8-2. Steps to take in an emergency
If a warning light turns on or a warning
buzzer sounds
Calmly perform the following actions if any of the warning lights
comes on or flashes. If a light comes on or flashes, but then
goes off, this does not necessarily indicate a malfunction in the
system. However, if this continues to occur, have the vehicle
inspected by your Toyota dealer.
Warning light and warning buzzer list
Warning lightWarning light/Details/Actions
(U.S.A.)
(Canada)
Brake system warning light (warning buzzer)*1
Indicates that:
• The brake fluid level is low; or
• The brake system is malfunctioning This light also comes on when the parking brake is not
released. If the light turns off after the parking brake is
fully released the system is operating normally.
 Immediately stop the vehicle in a safe place and con-
tact your Toyota dealer. Continuing to drive the vehi-
cle may be dangerous.
Charging system warning light*2
Indicates a malfunction in the vehicle’s charging system
 Immediately stop the vehicle in a safe place and con-
tact your Toyota dealer.
Low engine oil pressure warning light (warning
buzzer)
*2
Indicates that the engine oil pressure is too low.
 Immediately stop the vehicle in a safe place and con-
tact your Toyota dealer.
(U.S.A.)
(Canada)
Malfunction indicator lamp Indicates a malfunction in:
• The electronic engine control system;
• The electronic throttle control system;
• The electronic automatic transaxle control system
 Have the vehicle inspected by your Toyota dealer
immediately.

5408-2. Steps to take in an emergency
SIENNA_OM_01999-08001_(U)
*1: Parking brake engaged warning buzzer:P. 550
*2: If equipped
*3: Open door warning buzzer:P. 547
*4: Driver’s seat belt buzzer:
The driver’s seat belt buzzer sounds to alert the driver that his or her seat
belt is not fastened. Once the engine switch is turned to the “ON” position
(vehicles without a smart key system) or IGNITION ON mode (vehicles
with a smart key system), the buzzer sounds for 6 seconds. If the vehicle
reaches a speed of 12 mph (20 km/h), the buzzer sounds once. If the
seat belt is still unfastened after 30 seconds, the buzzer will sound inter-
mittently for 10 seconds. Then, if the seat belt is still unfastened, the
buzzer will sound in a different tone for 20 more seconds.
Front passenger’s seat belt buzzer:
The front passenger’s seat belt buzzer sounds to alert the front passen-
ger that his or her seat belt is not fastened. The buzzer sounds once if the
vehicle reaches a speed of 12 mph (20 km/h). If the seat belt is still unfas-
tened after 30 seconds, the buzzer will sound intermittently for 10 sec-
onds. Then, if the seat belt is still unfastened, the buzzer will sound in a
different tone for 20 more seconds.

5428-2. Steps to take in an emergency
SIENNA_OM_01999-08001_(U)■
When a tire is replaced with a spare tire (vehicles with compact spare
tire)
The compact spare tire is not equipped with a tire pressure warning valve
and transmitter. If a tire goes flat,
the tire pressure warning light will not
turn off even though the flat tire has been replaced with the spare tire.
Replace the spare tire with the repaired tire and adjust the tire inflation
pressure. The tire pressu re warning light will go off after a few minutes.
■Conditions that the tire pressure warning system may not function
properly
 P. 4 9 3
■If the tire pressure warning light frequently comes on after blinking
for 1 minute
If the tire pressure warning light frequently comes on after blinking for 1
minute when the engine switch is turned to the “ON” position (vehicles
without a smart key system) or IGNI TION ON mode (vehicles with a
smart key system), have it checked by your Toyota dealer.
■ Customization that can be co nfigured at Toyota dealer
The vehicle speed linked seat belt reminder buzzer can be disabled.
(Customizable features P. 626) However, Toyota recommends that the seat
belt reminder buzzer be operational to alert the driver and front passenger
when seat belts are not fastened.
■ Warning buzzer
In some cases, the buzzer may not be heard because of noisy place or an
audio sound.

5508-2. Steps to take in an emergency
SIENNA_OM_01999-08001_(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 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)

5518-2. Steps to take in an emergency
SIENNA_OM_01999-08001_(U)
8
When trouble arises
Indicates that the engine coolant temperature is
too highA buzzer also sounds.
 P. 587
Indicates a malfunction in the vehicle’s charging
system.
 Immediately stop the vehicle in a safe place
and contact your Toyota dealer. Continuing
to drive the vehicle may be dangerous.
(If equipped)
Indicates that the radar sensor is dirty or covered
with ice A buzzer also sounds.
 Clean the sensor.
(If equipped)
Indicates that the dynamic radar cruise control
system is unable to judge vehicle-to-vehicle dis-
tance
A buzzer also sounds.
 If the windshield wipers are on, turn them
off or set them to a mode other than AUTO
or high speed wiper operation.
Warning messageDetails/Actions

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)

5588-2. Steps to take in an emergency
SIENNA_OM_01999-08001_(U)
InteriorbuzzerExterior buzzerWarning messageDetails/Actions

Power was turned off due to the
automatic power off function.
 Next time when starting
the engine, increase the
engine speed slightly and
maintain that level for
approximately 5 minutes
to recharge the battery.
Con-
tinu-
ous  The driver’s door was opened
while any shift position other
than P was selected without
turning off the engine switch.

Shift the shift position to P.
Con-
tinu-
ousContin-
uous
The electronic key was carried
outside the vehicle and the
driver’s door was opened and
closed while any shift position
other than P was selected with-
out turning off the engine
switch.
Shift the shift position to P.
 Bring the electronic key
back into the vehicle.
Once  An attempt was made to start
the engine without the elec-
tronic key being present, or the
electronic key was not function-
ing normally.

Start the engine with the
electronic key present.
An attempt was made to drive
when the regular key was not
inside the vehicle.
 Confirm that the elec-
tronic key is inside the
vehicle.
(Flashes)
(Displayed alternately)
(Flashes)
(Flashes)

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)