Page 2 of 876

TABLE OF CONTENTSIndex
2
SIENNA_OM_OM45472U_(U)
1-1. Key informationKeys ..................................... 32
1-2. Opening, closing and locking the doors
Smart key system................. 36
Wireless remote control ....... 53
Front doors ........................... 60
Sliding doors ........................ 67
Back door ............................. 82
1-3. Adjustable components (seats, mirrors, steering
wheel)
Front seats ........................... 95
Rear seats .......................... 100
Driving position memory ..... 120
Head restraints ................... 125
Seat belts ........................... 128
Steering wheel ................... 137
Inside rear view mirror........ 138
Outside rear view mirrors .............................. 140 1-4. Opening and closing
the windows and moon roof
Power windows................... 144
Quarter windows................. 148
Moon roof ........................... 150
1-5. Refueling Opening the fuel tank cap .................................... 155
1-6. Theft deterrent system Engine immobilizer system .............................. 159
Alarm .................................. 162
Theft prevention labels (for U.S.A.) ....................... 165
1-7. Safety information Correct driving posture ....... 166
SRS airbags ....................... 168
Front passenger occupant classification system ......... 183
Child restraint systems ....... 189
Installing child restraints ..... 194
1Before driving
Page 31 of 876

Before driving1
31
SIENNA_OM_OM45472U_(U)
1-1. Key informationKeys ................................... 32
1-2. Opening, closing and locking the doors
Smart key system .............. 36
Wireless remote control ..... 53
Front doors......................... 60
Sliding doors ...................... 67
Back door ........................... 82
1-3. Adjustable components (seats, mirrors, steering
wheel)
Front seats ......................... 95
Rear seats........................ 100
Driving position memory .......................... 120
Head restraints................. 125
Seat belts ......................... 128
Steering wheel ................. 137
Inside rear view mirror ..... 138
Outside rear view mirrors............................ 140 1-4. Opening and closing
the windows and moon roof
Power windows ................ 144
Quarter windows .............. 148
Moon roof ......................... 150
1-5. Refueling Opening the fuel tank cap ................................. 155
1-6. Theft deterrent system Engine immobilizer system ........................... 159
Alarm................................ 162
Theft prevention labels (for U.S.A.) ..................... 165
1-7. Safety information Correct driving posture..... 166
SRS airbags ..................... 168
Front passenger occupant classification system ...... 183
Child restraint systems..... 189
Installing child restraints ........................ 194
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159
1
Before driving
SIENNA_OM_OM45472U_(U)
1-6. Theft deterrent system
Engine immobilizer system
: If equipped
The vehicle’s keys have built-in transponder chips that prevent the
engine from starting if a key has not been previously registered in
the vehicle’s on-board computer.
Never leave the keys inside the vehicle when you leave the vehicle.
Vehicles without a smart
key system
The indicator light flashes after
the key has been removed
from the engine switch to indi-
cate that the system is operat-
ing.
The indicator light stops flash-
ing after the registered key
has been inserted into the
engine switch to indicate that
the system has been can-
celed.
Vehicles with a smart key
system
The indicator light flashes after
the “ENGINE START STOP”
switch has been turned off to
indicate that the system is
operating.
The indicator light stops flash-
ing after the “ENGINE START
STOP” switch has been turned
to ACCESSORY or IGNITION
ON mode to indicate that the
system has been canceled.
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160 1-6. Theft deterrent system
SIENNA_OM_OM45472U_(U)
■System maintenance
The vehicle has a maintenance-free type engine immobilizer system.
■ Conditions that may cause the system to malfunction
● If the grip portion of the key is in contact with a metallic object
● If the key is in close proximity to or touching a key to the security system
(key with a built-in transponder chip) of another vehicle
■ Certifications for the engine immobilizer system
U.S.A.
Vehicles without a smart key system
FCC ID: WRKRI-34BTY
Vehicles with a smart key system
FCC ID: NI4TMIMB-1
This device complies with Part 15 of the FCC Rules. Operation is subject to
the following two conditions: (1) this device may not cause harmful interfer-
ence, and (2) this device must accept any interference received, including
interference that may cause undesired operation.
Canada
This device complies with RSS-210 of Industry Canada. Operation is subject
to the following two conditions: (1) this device may not cause interference,
and (2) this device must accept any interference, including interference that
may cause undesired operation of the device.
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161
1-6. Theft deterrent system
1
Before driving
SIENNA_OM_OM45472U_(U)
CAUTION
■
Certifications for the immobilizer system
Changes or modifications not expressly approved by the party responsible
for compliance could void the user’s authority to operate the equipment.
NOTICE
■To ensure the system operates correctly
Do not modify or remove the system. If modified or removed, the proper
operation of the system cannot be guaranteed.
Page 227 of 876
227
2-1. Driving procedures
2
When driving
SIENNA_OM_OM45472U_(U)
■
Turning the key from “ACC” to “LOCK”
Shift the shift lever to P.
■ If the engine does not start (vehic les with engine immobilizer system)
The engine immobilizer system may not have been deactivated. ( P. 159)
■ When the steering lock cannot be released
■ Key reminder function
A buzzer sounds if the driver’s door is opened while the engine switch is in
the “LOCK” or “ACC” position to remind you to remove the key\
.
STEP1
Push in the key and turn it to the “LOCK”
position.STEP2
When starting the engine, the engine
switch may seem stuck in the “LOCK”
position. To free it, turn the key while turn-
ing the steering wheel slightly left and
right.
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233
2-1. Driving procedures
2
When driving
SIENNA_OM_OM45472U_(U)
■
Electronic key battery depletion
P. 5 0
■ Conditions aff ecting operation
P. 4 6
■ Note for the entry function
P. 4 7
■ If the engine does not start
The engine immobilizer system may not have been deactivated. ( P. 159)
■ Steering lock
After turning the “ENGINE START STOP” switch off and opening and closing
the doors, the steering wheel will be locked due to the steering lock function.
Operating the “ENGINE START STOP” switch again automatically cancels
the steering lock.
■ When the steering lock cannot be released
■ Steering lock motor overheating prevention
To prevent the steering lock motor from overheating, the motor may be sus-
pended if the engine is turned on and off repeatedly in a short period of time.
In this case, refrain from operating the engine. After about 10 seconds, the
steering lock motor will resume functioning.
The green indicator light on the “ENGINE
START STOP” switch will flash and a
message will be shown on the multi-infor-
mation display. Press the “ENGINE
START STOP” switch while turning the
steering wheel left and right.
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778
5-2. Steps to take in an emergency
SIENNA_OM_OM45472U_(U)
If the engine will not star t
If the engine will not start even though correct starting procedures
are being followed ( P. 226, 229), consider each of the following
points:
■ The engine will not start even though the starter motor
operates normally.
One of the following may be the cause of the problem:
●There may not be sufficient fuel in the vehicle’s tank.
Refuel the vehicle.
● The engine may be flooded.
Try to restart the engine again following correct starting proce-
dures. ( P. 226, 229)
● There may be a malfunction in the engine immobilizer system
(if equipped). ( P. 159)
■ The starter motor turns over slowly, the interior lights and
headlights are dim, or the horn does not sound or sounds at
a low volume.
One of the following may be the cause of the problem:
●The battery may be discharged. ( P. 786)
● The battery terminal connec tions may be loose or corroded.
■ The starter motor does not turn over.
The engine starting system may be malfunctioning due to an
electrical problem such as an open circuit or a blown fuse. How-
ever, an interim measure is available to start the engine.