sensor TOYOTA SIENNA 2018 Owners Manual (in English)

361-1. For safe use
SIENNA_OM_OM08019U_(U)
WARNING
■When children are in the vehicle
Do not allow children to play with the seat belt. If the seat belt becomes
twisted around a child’s neck, it may lead to choking or other serious injuries
that could result in death.
If this occurs and the buckle cannot be unfastened, scissors sh ould be used
to cut the belt.
■ Seat belt pretensi oners (front seats)
● Do not place anything, such as a cushion, on the front passenger’s seat.
Doing so will disperse the passenger’s weight, which prevents t he sensor
from detecting the passenger’s weight properly. As a result, th e seat belt
pretensioner for the front passenger’s seat may not activate in the event of
a collision.
● If the pretensioner has activated, the SRS warning light will c ome on. In
that case, the seat belt cannot be used again and must be replaced at
your Toyota dealer.
■ Adjustable shoulder anchor (front and second outside Tip-up sea ts)
Always make sure the shoulder belt is positioned across the cen ter of your
shoulder. The belt should be kept away from your neck, but not falling off
your shoulder. Failure to do so could reduce the amount of prot ection in an
accident and cause death or serious injuries in the event of a sudden stop,
sudden swerve or accident. ( P. 33)
■ Seat belt damage and wear
● Do not damage the seat belts by allowing the belt, plate, or bu ckle to be
jammed in the door.
● Inspect the seat belt system periodically. Check for cuts, fray ing, and loose
parts. Do not use a damaged seat belt until it is replaced. Dam aged seat
belts cannot protect an occupant from death or serious injury.
● Ensure that the belt and plate are locked and the belt is not twisted.
If the seat belt does not function correctly, immediately conta ct your Toyota
dealer.
● Replace the seat assembly, including the belts, if your vehicle has been
involved in a serious accident, even if there is no obvious dam age.
● Do not attempt to install, remove, modify, disassemble or dispo se of the
seat belts. Have any necessary repairs carried out by your Toyota dealer.
Inappropriate handling may lead to incorrect operation.

401-1. For safe use
SIENNA_OM_OM08019U_(U)
SRS airbag system components
Front passenger airbag
Curtain shield airbags
Side airbags
Seat belt pretensioners and
force limiters
Front passenger occupant clas-
sification system (ECU and
sensors)
Side impact sensors (rear)
Front passenger’s seat belt
buckle switch
SRS warning lightDriver airbag
Side impact sensors (front
door)
Driver’s seat belt buckle
switch
Driver’s seat position sensor
Driver’s knee airbag
Front impact sensors
Airbag sensor assembly
“AIR BAG ON” and “AIR BAG
OFF” indicator lights
Front passenger’s seat cush-
ion airbag1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17

411-1. For safe use
SIENNA_OM_OM08019U_(U)
1
For safety and security
Your vehicle is equipped with ADVANCED AIRBAGS designed based
on the US motor vehicle safety standards (FMVSS208). The airbag
sensor assembly (ECU) controls airbag deployment based on infor-
mation obtained from the sensors etc. shown in the system compo -
nents diagram above. This informat ion includes crash severity and
occupant information. As the airbags deploy, a chemical reactio n in
the inflators quickly fills the airbags with non-toxic gas to h elp restrain
the motion of t he occupants.
WARNING
■SRS airbag precautions
Observe the following precautions regarding the SRS airbags.
Failure to do so may cause death or serious injury.
● The driver and all passengers in the vehicle must wear their se at belts
properly.
The SRS airbags are supplemental devices to be used with the se at belts.
● The SRS driver airbag deploys with considerable force, and can cause
death or serious injury especially if the driver is very close to the airbag.
The National Highway Traffic Safety Administration (NHTSA) advi ses:
Since the risk zone for the driver’s airbag is the first 2 - 3 in. (50 - 75 mm)
of inflation, placing yourself 10 in. (250 mm) from your driver airbag pro-
vides you with a clear margin of safety. This distance is measured from
the center of the steering wheel to your breastbone. If you sit less than 10
in. (250 mm) away now, you can change your driving position in several
ways:
• Move your seat to the rear as far as you can while still reach ing the ped-
als comfortably.
• Slightly recline the back of the seat.
Although vehicle designs vary, many drivers can achieve the 10 in. (250
mm) distance, even with the driver seat all the way forward, si mply by
reclining the back of the seat somewhat. If reclining the back of your
seat makes it hard to see the road, raise yourself by using a f irm, non-
slippery cushion, or raise the seat if your vehicle has that feature.
• If your steering wheel is adjustable, tilt it downward. This points the air-
bag toward your chest instead of your head and neck.
The seat should be adjusted as recommended by NHTSA above, whil e
still maintaining control of the foot pedals, steering wheel, and your view
of the instrument panel controls.

451-1. For safe use
SIENNA_OM_OM08019U_(U)
1
For safety and security
WARNING
■SRS airbag precautions
● Do not hang coat hangers or other hard objects on the coat hook s. All of
these items could become projectiles and may cause death or ser ious
injury, should the SRS curtain shield airbags deploy.
● If a vinyl cover is put on the area where the SRS knee airbag w ill deploy,
be sure to remove it.
● Do not use seat accessories which cover the parts where the SRS side
airbags and SRS seat cushion airbag inflate as they may interfe re with
inflation of the SRS airbags. Such accessories may prevent the side air-
bags and seat cushion airbag from activating correctly, disable the system
or cause the side airbags and seat cushion airbag to inflate accidentally,
resulting in death or serious injury.
● Do not strike or apply significant levels of force to the area of the SRS air-
bag components.
Doing so can cause the SRS airbags to malfunction.
● Do not touch any of the component parts immediately after the S RS air-
bags have deployed (inflated) as they may be hot.
● If breathing becomes difficult after the SRS airbags have deplo yed, open a
door or window to allow fresh air in, or leave the vehicle if i t is safe to do
so. Wash off any residue as soon as possible to prevent skin ir ritation.
● If the areas where the SRS airbags are stored, such as the steering wheel
pad and front and rear pillar garnishes, are damaged or cracked , have
them replaced by your Toyota dealer.
● Do not place anything, such as a cushion, on the front passenger’s seat.
Doing so will disperse the passenger’s weight, which prevents t he sensor
from detecting the passenger’s weight properly. As a result, th e SRS front
airbags for the front passenger may not deploy in the event of a collision.

110
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3-2. Opening, closing and locking the doors
Front doors
◆Entry function (vehicles with a smart key system)
Carry the electronic key to enable this function.
Grip the driver’s door handle
to unlock the door. Grip the
passenger’s door handle to
unlock all the doors.
*
Make sure to touch the sensor
on the back of the handle.
The doors cannot be unlocked
for 3 seconds after the doors are
locked.
*: The door unlock settings can be changed. ( P. 117)
Touch the lock sensor (the indentation on the upper part of the
door handle) to lock all the doors.
Check that the door is securely locked.
Unlocking and locking the doors from the outside
1
2

SIENNA_OM_OM08019U_(U)
1133-2. Opening, closing and locking the doors
3
Operation of each component
■Operation signals
A buzzer sounds and the emergency flashers flash to indicate th at the doors
have been locked/unlocked. (Locked: Once; Unlocked: Twice)
■ Security feature
If a door is not opened within approximately 60 seconds after t he vehicle is
unlocked, the security feature automatically locks the vehicle again.
■ When the door cannot be locked by the lock sensor on the upper part of
the front door handle
■ Door lock buzzer
If an attempt to lock the doors (except for power sliding doors or power back
door) is made when a door is not fully closed, a buzzer sounds continuously.
Fully close the door to stop the buzzer, and lock the vehicle o nce more.
■ Alarm (if equipped)
Using the wireless remote control to lock the doors will set th e alarm system.
( P. 79)
■ If the smart key system or the wireless remote control does not operate
properly
Vehicles with a smart key system: Use the mechanical key to loc k and unlock
the doors. ( P. 503)
Replace the key battery with a new one if it is depleted. ( P. 436)
Touch both lock sensors on the upper and
lower part of the front door handle simul-
taneously.

121
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3-2. Opening, closing and locking the doors
3
Operation of each component
Sliding doors
◆Entry function (vehicles with a smart key system)
Carry the electronic key to enable this function.
Pull the handle to unlock all the
doors.
There is no touch type sensor in
slide door handle. You must pull
the handle to activate the opera-
tion.
◆Wireless remote control
 P. 1 1 1
Vehicles without power sliding doors
The sliding doors can be opened and closed using the sliding
door handle. The sliding door can be locked and unlocked using
the wireless remote control, door lock switch or inside lock
knob.
Vehicles with power sliding doors
The power sliding doors can be opened and closed using the
sliding door handle, power sliding door switches or wireless
remote control. The power sliding doors can be locked and
unlocked using the wireless remot e control, door lock switch or
inside lock knob.
Locking/unlocking the sliding door from outside

132
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3-2. Opening, closing and locking the doors
NOTICE
■Sliding door
■ To prevent damage to your vehicle
● Vehicles with the power sliding door:
• Do not apply excessive force when the sliding door is operatin g.
• Do not place your hand or foot near door hinges or rollers when the slid-
ing door is operating.
• Avoid forcibly opening the left side sliding door fully when the fuel filler door is opened. Otherwise, the fuel filler door may be damaged.
• Take care not to damage the sensors (installed on the front ed ge of the
power sliding door) with a knife or other sharp object.
● Make sure there is nothing in the doorway before closing.
● Do not close the sliding door by applying the brakes. Doing so could cause
the sliding door to be damaged.
Make sure magazines are not bent or
protruding from the sliding door pockets.
Do not insert anything too big so that the
shape of the sliding door pockets is dis-
torted. Such objects may obstruct the
opening/closing of the sliding doors,
damage the sliding door pockets or the
vehicle body, and may result in a mal-
function.

142
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3-2. Opening, closing and locking the doors
NOTICE
■Back door damper stays
The back door is equipped with damper stays that hold the back door in
place.
Observe the following precautions.
Failure to do so may cause damage to the back door damper stay, resulting
in malfunction.
● Do not place your hand on the damper stay or apply lateral forc es to it.
■ To prevent back door closer malfunction
Do not apply excessive force to the back door while the back door closer is
operating.
■ To prevent damage to the power back door
● Make sure that there is no ice between the back door and frame that
would prevent movement of the back door. Operating the power ba ck door
when excessive load is present on the back door may cause a mal func-
tion.
● Do not apply excessive force to the back door while the power b ack door
is operating.
● Take care not to damage the sensors (installed on the right and left edges
of the power back door) with a knife or other sharp object. If the sensor is
disconnected, the power back door will not operate in automatic operation.
●Do not attach any foreign objects, such
as stickers, plastic sheets, or adhesives
to the damper stay rod.
● Do not touch the damper stay rod with
gloves or other fabric items.
● Do not attach any accessories other
than genuine Toyota parts to the back
door.
Damper stays

SIENNA_OM_OM08019U_(U)
1453-2. Opening, closing and locking the doors
3
Operation of each component
■Battery-saving function
In the following circumstances, the entry function is disabled in order to pre-
vent the vehicle battery from discharging and the electronic ke y battery from
discharging.
● When the entry function has not been used for 5 days or more
● When the electronic key has been left within approximately 6 ft. (2 m) of the
vehicle for 10 minutes or more
● If the entry function has not been used for 14 days or more, th e vehicle can-
not be unlocked by a door other than the driver’s door. To unlock the vehicle,
grip the driver’s door handle or use the wireless remote contro l or the
mechanical key.
The system will resume operation when...
● The vehicle is locked using the lock sensor when carrying the electronic key
on your person.
● The vehicle is locked/unlocked using the wireless remote contro l. (P. 1 1 1 )
● The vehicle is locked/unlocked using the mechanical key. ( P. 503)
■ Conditions affecting operation
P. 119
■ Notes for the entry function
●Even when the electronic key is within the effective range (det ection areas),
the system may not operate properly in the following cases.
• The electronic key is too close to the window or outside door handle, near
the ground, or in a high place when the doors are locked or unl ocked.
• The electronic key is on the instrument panel, floor or in the glove box
when the engine is started or engine switch modes are changed.
● Do not leave the electronic key on top of the instrument panel or near the
door pockets when exiting the vehicle. Depending on the radio w ave recep-
tion conditions, it may be detected by the antenna outside the cabin and the
door will become lockable from the outside, possibly trapping the electronic
key inside the vehicle.
● As long as the electronic key is within the effective range, th e doors may be
locked or unlocked by anyone. However, only the doors detecting the elec-
tronic key can be used to unlock the vehicle.
● The doors may unlock or lock if a large amount of water splashe s on the
door handle, such as in the rain or in a car wash when the elec tronic key is
within the effective range. (The doors will automatically be lo cked after
approximately 60 seconds if the doors are not opened and closed.)
● If the wireless remote control is used to lock the doors when t he electronic
key is near the vehicle, there is a possibility that the door m ay not be
unlocked by the smart key system. (Use the wireless remote cont rol to
unlock the doors.)
● If power slide door is unable to operate due to prohibition by the power slid-
ing door main switch, the door unlock and open operation will n ot be per-
formed. ( P. 124)