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175
1-7. Safety information
1
Before driving
SIENNA_OM_OM45483U_(U)
■
SRS airbag deployment conditions (SRS front airbags)
●The SRS front airbag will deploy in the event of an impact that exceeds
the set threshold level (the level of force corresponding to an approxi-
mately 12 - 18 mph [20 - 30 km/h] frontal collision with a fixed wall that
does not move or deform).
However, this threshold velocity will be considerably higher in the following
situations:
• If the vehicle strikes an object, such as a parked vehicle or sign pole,
which can move or deform on impact
• If the vehicle is involved in an underride collision, such as a collision in which the front of the vehicle “underrides”, or goes under, the bed of a
truck
● Depending on the type of collision, it is possible that only the seat belt
pretensioners will activate.
● The SRS front airbags for the front passenger will not activate if there is
no passenger sitting in the front passenger seat. However, the SRS front
airbags for the front passenger may deploy if luggage is put in the seat,
even if the seat is unoccupied.
■ SRS airbag deployment conditions (S RS side and curtain shield air-
bags)
● The SRS side and curtain shield airbags will deploy in the event of an
impact that exceeds the set threshold level (the level of force corre-
sponding to the impact force produced by an approximately 3300 lb.
[1500 kg] vehicle colliding with the vehicle cabin from a direction perpen-
dicular to the vehicle orientation at an approximate speed of 12 - 18 mph
[20 - 30 km/h]).
● The SRS curtain shield airbags may also deploy in the event of a severe
frontal collision.
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176 1-7. Safety information
SIENNA_OM_OM45483U_(U)
■Conditions under which the SRS airbags may deploy (inflate), other
than a collision
The SRS front airbags and curtain shield airbags may also deploy if a seri-
ous impact occurs to the underside of your vehicle. Some examples are
shown in the illustration.
■ Types of collisions that may not depl oy the SRS front airbag (SRS front
airbags)
The SRS front airbags do not generally inflate if the vehicle is involved in a
side or rear collision, if it rolls over, or if it is involved in a low-speed frontal
collision. But, whenever a collision of any type causes sufficient forward
deceleration of the vehicle, deployment of the SRS front airbags may occur.
● Hitting a curb, edge of pavement or
hard surface
● Falling into or jumping over a deep hole
● Landing hard or falling
●Collision from the side
● Collision from the rear
● Vehicle rollover
Page 185 of 872
185
1
1-7. Safety information
Before driving
SIENNA_OM_OM45483U_(U)
Front passenger occupant classification system
Your vehicle is equipped with a front passenger occupant classifica-
tion system. This system detects the conditions of the front passen-
ger seat and activates or deactiv ates the devices for the front
passenger.
SRS warning light
Front passenger’s seat belt reminder light
“AIR BAG OFF” indicator light
“AIR BAG ON” indicator light
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186 1-7. Safety information
SIENNA_OM_OM45483U_(U)
Conditions and operation of the front passenger occupant
classification system
■ Adult
*1
■Child*3 or child restraint system*4
Indicator/
warning light “AIR BAG ON” and “AIR BAG OFF”
indicator lights “AIR BAG
ON”
SRS warning light Off
Front passenger’s seat belt reminder light
Flashing*2
Devices Front passenger airbag
Activated
Side airbag on the front passenger seat
Curtain shield airbag in the front passenger side
Front passenger’s seat belt pretensioner
Indicator/
warning light “AIR BAG ON” and “AIR BAG OFF”
indicator lights “AIR BAG
OFF”
*5
SRS warning light Off
Front passenger’s seat belt reminder light Flashing
*2
DevicesFront passenger airbag Deactivated
Side airbag on the front passenger seat
Activated
Curtain shield airbag in the front
passenger side
Front passenger’s seat belt pretensioner
Page 256 of 872
256
2-2. Instrument cluster and information display
SIENNA_OM_OM45483U_(U)
Multi-information display
: If equipped
The multi-information display presents the driver with a variety of
driving-related data, including the clock and current outside temper-
ature. The display varies depending on its specification.
● Clock ( P. 259)
Indicates and sets the time.
● Outside temperature display
Indicates the outside temperature.
The temperature range that can be displayed is from -40
°F (-40°C) to
122
°F (50°C).
● Air conditioning system display ( P. 404)
Automatically displayed when the air conditioning is turned on.
● Rear view monitor ( P. 325)
Automatically displayed when the shift lever is moved into R.
● Trip information ( P. 257)
Displays driving range, fuel consumption and other cruising-related
information.
● Intuitive parking assist display (if equipped) ( P. 318)
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323
2-4. Using other
driving systems
2
When driving
SIENNA_OM_OM45483U_(U)
■Sensor detection information
●Certain vehicle conditions and the surrounding environment may affect
the ability of the sensor to correctly detect obstacles. Particular instances
where this may occur are listed below.
• There is dirt, snow or ice on the sensor.
• The sensor is frozen.
• The sensor is covered in any way.
• The vehicle is leaning considerably to one side.
• On an extremely bumpy road, on an incline, on gravel, or on grass
• The vicinity of the vehicle is noisy due to vehicle horns, motorcycle
engines, air brakes of large vehicles, or other loud noises producing
ultrasonic waves.
• There is another vehicle equipped with parking assist sensors in the vicinity.
• A sensor is coated with a sheet of spray or heavy rain.
• The vehicle is equipped with a fender pole or radio antenna.
• A bumper or sensor receives a strong impact.
• The vehicle is approaching a tall or right-angled curb.
• In harsh sunlight or intense cold weather
In addition to the examples above, there are instances in which, because of
their shapes, signs and other objects may be judged by the sensor to be
closer than they are.
● The shape of the obstacle may prevent the sensor from detecting it. Pay
particular attention to the following obstacles:
• Wires, fences, ropes etc.
• Cotton, snow and other materials that absorb sound waves
• Sharply-angled objects
• Low obstacles
• Tall obstacles with upper sections projecting outwards in the direction
of your vehicle
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369
2-5. Driving information
2
When driving
SIENNA_OM_OM45483U_(U)
Winter driving tips
Carry out the necessary preparations and inspections before driving
the vehicle in winter. Always drive the vehicle in a manner appropri-
ate to the prevailing weather conditions.
■ Pre-winter preparations
●Use fluids that are appropriate to the prevailing outside tem-
peratures.
• Engine oil
• Engine coolant
• Washer fluid
● Have a service technician inspect the level and specific grav-
ity of battery electrolyte.
● Have the vehicle fitted with four snow tires or purchase a set
of tire chains for the front tires.
Ensure that all tires are the same size and brand, and that chains
match the size of the tires.
■Before driving the vehicle
Perform the following according to the driving conditions:
●Do not try to forcibly open a window or move a wiper that is
frozen. Pour warm water over the frozen area to melt the ice.
Wipe away the water immediately to prevent it from freezing.
● To ensure proper operation of th e climate control system fan,
remove any snow that has accumulated on the air inlet vents
in front of the windshield.
● Remove any ice that has accumu lated on the vehicle chassis.
● Periodically check for and remove any excess ice or snow
that may have accumulated in the wheel well or on the
brakes.
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2-5. Driving information
2
When driving
SIENNA_OM_OM45483U_(U)
●
Take care when passing other vehicles. Passing requires consider-
able distance. After passing a vehicle, do not forget the length of
your trailer, and be sure you hav e plenty of room before changing
lanes.
● To maintain engine braking efficiency and charging system perfor-
mance when using engine braking, do not put the transmission in
D. If in the S mode, transmission shift range position must be in 4
or lower.
● Instability happens more frequently when descending steep or long
downhill grades. Before descending, slow down and downshift. Do
not make sudden downshifts while descending steep or long down-
hill grades.
● Avoid holding the brake pedal down too long or applying the
brakes too frequently. This could cause the brakes to overheat and
result in reduced braking efficiency.
● Due to the added load of the trailer, your vehicle’s engine may
overheat on hot days (at temper atures over 85°F [30°C]) when
driving up a long or steep grade. If the Engine coolant temperature
gauge overheating, immediately turn off the air conditioning (if in
use), pull your vehicle off the road and stop in a safe spot.
( P. 790)