2012 TOYOTA SIENNA warning light

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

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

249
2-2. Instrument cluster and information display
2
When driving
SIENNA_U (OM45477U)
*1: These lights turn on when the “ENGINE START STOP” switch is
turned to IGNITION ON mode (vehicles with a smart key system) or
the engine switch is turned to the “ON” position (vehicles without a
smart key system) to indicate that a system check is being per-
formed. They will turn off after the engine is started, or after a few
seconds. There may be a malfunction in a system if a light does not
come on, or if the lights do not turn off. Have the vehicle inspected
by your Toyota dealer.
*2: The light flashes to indicate that the system is operating.
*3: The light flashes faster than usual to indicate that the system isoperating.
Slip indicator
(P. 328, 333)Shift position indicators
(P. 238)
VSC OFF indicator
(P. 329)
(if equipped)
Eco Driving Indicator
Light ( P. 264)
“TRAC OFF” indicator
(P. 329)
(if equipped)
“PCS” warning
(P. 336)
*1, 2
*1*1
*1*1, 3

250 2-2. Instrument cluster and information display
SIENNA_U (OM45477U)
■Warning lights
Warning lights inform the driver of malfunctions in any of the
vehicle’s systems. ( P. 729)
*1: These lights turn on when the “ENGINE START STOP” switch is
turned to IGNITION ON mode (vehicles with a smart key system) or
the engine switch is turned to the “ON” position (vehicles without a
smart key system) to indicate that a system check is being per-
formed. They will turn off after the engine is started, or after a few
seconds. There may be a malfunction in a system if a light does not
come on, or if the lights do not turn off. Have the vehicle inspected
by your Toyota dealer for details.
*2: The light flashes to indicate a malfunction.
(U.S.A.)(Canada)(U.S.A.)(Canada)(U.S.A.)
(Canada)(U.S.A.)
(if equipped)(if equipped)(if equipped)(if equipped)(if equipped)
(if equipped)
*1*1*1*1*1*1*1*1
*1*1*1*1*1
*1*1*1*1, 2*2*2
*2

251
2-2. Instrument cluster and information display
2
When driving
SIENNA_U (OM45477U)
CAUTION
■
If a safety system warning light does not come on
Should a safety system light such as the ABS or SRS airbag warning light
not come on when you start the engine, this could mean that these systems
are not available to help protect you in an accident, which could result in
death or serious injury. Have the vehicle inspected by your Toyota dealer
immediately if this occurs.

308 2-4. Using other driving systems
SIENNA_U (OM45477U)
■Automatic cancelation of constant speed control
The cruise control will stop maintaining the vehicle speed in the following sit-
uations.
● Actual vehicle speed is more than approximately 10 mph (16 km/h)
below the set vehicle speed.
At this time, the memorized set speed is not retained.
● Vehicle speed falls below appr oximately 25 mph (40 km/h).
● Enhanced VSC is activated.
■ Radar sensor and grille cover
Always keep the sensor and grille cover clean to ensure that the vehicle\
-to-
vehicle distance control operates pr operly. (Some obstructions, such as
snow, ice and plastic objects, cannot be detected by the obstruction sensor.)
Dynamic radar cruise control is canceled if an obstruction is detected.
■ Warning lights for dynamic radar cruise control
Warning light is used to indicate a system malfunction or to inform the driver
of the need for caution while driving. ( P. 729)
Grille cover
Radar sensor

332 2-4. Using other driving systems
SIENNA_U (OM45477U)
CAUTION
■When Enhanced VSC is activated
The slip indicator light flashes and a warning buzzer sounds. Always drive
carefully. Reckless driving may cause an accident. Exercise particular care
when the indicator light flashes and a buzzer sounds.
■ When TRAC and VSC systems are turned off
Be especially careful and drive at a speed appropriate to the road condi-
tions. As these are the systems to ensure vehicle stability and driving force,
do not turn the TRAC and VSC systems off unless necessary.
■ Replacing tires
Make sure that all tires are of the specified size and of the same brand, tread
pattern and total load capacity. In addition, make sure that the tires are
inflated to the recommended tire pressure level.
The ABS and Enhanced VSC systems will not function correctly if different
tires are installed on the vehicle.
Contact your Toyota dealer for further information when replacing tires or
wheels.
■ Handling of tires and suspension
Using tires with any kind of problem or modifying the suspension will affect
the driving assist systems, and may cause the system to malfunction.
■ Active Torque Control 4WD system
● The AWD system of this vehicle is intended to ensure driving stability on
normal roads. It is not designed for use in demanding situations such as
rally driving.
● Take care when driving on slippery road surfaces.