2012 TOYOTA SIENNA warning

170 1-7. Safety information
SIENNA_U (OM45477U)
Airbag system componentsFront passenger airbag
Curtain shield airbags
Side airbags
Front passenger occupant
classification system (ECU
and sensors)
Curtain shield airbag sen-
sors
Front passenger’s seat belt
buckle switch
SRS warning light
Driver airbag Side and curtain shield air-
bag sensors
Driver’s seat belt buckle
switch
Driver’s seat position sen-
sor
Driver knee airbag
Front airbag sensors
Airbag sensor assembly
“AIR BAG ON” and “AIR
BAG OFF” indicator lights

183
1
1-7. Safety information
Before driving
SIENNA_U (OM45477U)
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

184 1-7. Safety information
SIENNA_U (OM45477U)
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

185
1-7. Safety information
1
Before driving
SIENNA_U (OM45477U)
■
Unoccupied
■ There is a malfunction in the system
Indicator/
warning light “AIR BAG ON” and “AIR BAG OFF”
indicator lights Not
illuminated
SRS warning light Off
Front passenger’s seat belt reminder
light
Devices Front 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 Deactivated
Indicator/
warning light “AIR BAG ON” and “AIR BAG OFF”
indicator lights “AIR BAG
OFF”
SRS warning light On
Front passenger’s seat belt reminder light Off
Devices Front 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

188 1-7. Safety information
SIENNA_U (OM45477U)
CAUTION
■Front passenger occupant cl assification system precautions
● Do not recline the front passenger seatback so far that it touches a rear
seat. This may cause the “AIR BAG OFF” indicator light to be illuminated,
which indicates that the passenger’s airbags will not deploy in the event of
a severe accident. If the seatback touches the rear seat, return the seat-
back to a position where it does not touch the rear seat. Keep the front\
passenger seatback as upright as possible when the vehicle is moving.
Reclining the seatback excessively may lessen the effectiveness of the
seat belt system.
● If an adult sits in the front passenger seat, the “AIR BAG ON” indicator
light is illuminated. If the “AIR BAG OFF” indicator is illuminated, ask the
passenger to sit up straight, well back in the seat, feet on the floor, and
with the seat belt worn correctly. If the “AIR BAG OFF” indicator still
remains illuminated, either ask the passenger to move to the rear seat, or
if that is not possible, move the front passenger seat fully rearward.
● When it is unavoidable to install the forward-facing child restraint system
on the front passenger seat, install the child restraint system on the front
passenger seat in the proper order. ( P.194)
● Do not modify or remove the front seats.
● Do not kick the front passenger seat or subject it to severe impact. Other-
wise, the SRS warning light may come on to indicate a malfunction of the
detection system. In this case, contact your Toyota dealer immediately.
● Child restraint systems installed on the rear seat should not contact the
front seatbacks.
● Do not use a seat accessory, such as a cushion or seat cover, that covers
the seat cushion surface.
● Do not modify or replace the upholstery of the front seat.

When driving2
211
SIENNA_U (OM45477U)
2-1. Driving proceduresDriving the vehicle............ 212
Engine (ignition) switch (vehicles without smart
key system).................... 226
Engine (ignition) switch (vehicles with smart key
system) .......................... 229
Automatic transaxle ......... 236
Turn signal lever .............. 241
Parking brake ................... 242
Horn ................................. 243
2-2. Instrument cluster and information display
Gauges and meters ......... 244
Indicators and warning lights .............................. 247
Multi-information display............................ 252
2-3. Operating the lights and wipers
Headlight switch ............... 266
Automatic High Beam ...... 273
Fog light switch ................ 280
Windshield wipers and washer ........................... 282
Rear window wiper and washer ........................... 290 2-4. Using other driving systems
Cruise control ................... 293
Dynamic radar cruise control ............................ 298
Intuitive parking assist...... 314
Rear view monitor system ........................... 321
Driving assist systems ..... 327
Hill-start assist control ...... 333
PCS (Pre-Collision System) ... 336
2-5. Driving information Cargo and luggage .......... 343
Vehicle load limits ............ 351
Winter driving tips ............ 352
Trailer towing (with towing package) .... 356
Dinghy towing .................. 376

240 2-1. Driving procedures
SIENNA_U (OM45477U)
■If the “S” indicator does not come on even after shifting the shift lever
to S
This may indicate a malfunction in the automatic transaxle system. Have the
vehicle inspected by your Toyota dealer immediately. (In this situation, the
transaxle will operate in the same manner as when the shift lever is in D.)
■ Downshift restriction warning buzzer (S mode)
To help ensure safety and driving performance, downshifting operation may
sometimes be restricted. In some circumstances, downshifting may not be
possible even when the shift lever is operated. (A buzzer will sound twice.)
■ AI-SHIFT
AI-SHIFT automatically selects the suitable gear according to driver perfor-
mance and driving conditions.
AI-SHIFT automatically operates when the shift lever is in the D position.
(Shifting the shift lever to the S position cancels the function.)
■ Driving on a downhill
On declines, there may be case where the vehicle shifts down automatically
to obtain engine braking. As a result of the downshifting the engine speed
may increase.
CAUTION
■When driving on slippery road surfaces
Do not accelerate or shift gears suddenly.
Sudden changes in engine braking may cause the vehicle to spin or skid,
resulting in an accident.

247
2-2. Instrument cluster and information display
2
When driving
SIENNA_U (OM45477U)
Indicators and warning lights
The indicator and warning lights on the instrument cluster and cen-
ter panel inform the driver of the status of the vehicle’s various sys-
tems.
■ Instrument cluster
■ Center display