2012 TOYOTA SIENNA ECU

220 2-1. Driving procedures
SIENNA_U (OM45477U)
CAUTION
■When the vehicle is stopped
● Do not race the engine.
If the vehicle is in any gear other than P or N, the vehicle may accelerate
suddenly and unexpectedly, causing an accident.
● Do not leave the vehicle with the engine running for a long time.
If such a situation cannot be avoided, park the vehicle in an open space
and check that exhaust fumes do not enter the vehicle interior.
● In order to prevent accidents due to the vehicle rolling away, always keep
depressing the brake pedal while the engine is running, and apply the
parking brake as necessary.
● If the vehicle is stopped on an incline, in order to prevent accidents caused
by the vehicle rolling forward or backward, always depress the brake pedal
and securely apply the parking brake as needed.
● Avoid revving or racing the engine.
Running the engine at high speed while the vehicle is stopped may cause
the exhaust system to overheat, which could result in a fire if combustible
material is nearby.

223
2-1. Driving procedures
2
When driving
SIENNA_U (OM45477U)
CAUTION
■
When taking a nap in the vehicle
Always turn the engine off. Otherwise, if you accidentally move the shift lever
or depress the accelerator pedal, this could cause an accident or fire due to
engine overheating. Additionally, if the vehicle is parked in a poorly venti-
lated area, exhaust gases may collect and enter the vehicle, leading to
death or a serious health hazard.
■ When braking
● When the brakes are wet, drive more cautiously.
Braking distance increases when the brakes are wet, and this may cause
one side of the vehicle to brake differently than the other side. Also the
parking brake may not securely hold the vehicle.
● If the power brake assist function does not operate, do not follow other
vehicles closely and avoid hills or sharp turns that require braking.
In this case, braking is still possible, but the brake pedal should be
depressed more firmly than usual. Also, the braking distance will increase.
● Do not pump the brake pedal if the engine stalls.
Each push on the brake pedal uses up the reserve for the power-assisted
brakes.
● The brake system consists of 2 individual hydraulic systems: If one of the
systems fails, the other will still operate. In this case, the brake pedal
should be depressed more firmly than usual and braking distance will
increase.
If this happens, do not continue to drive the vehicle. Have your brakes
fixed immediately.
■ If the vehicle becomes stuck (AWD models)
Do not spin the wheels excessively when any of the tires is up in the air, or
the vehicle is stuck in sand or mud, etc. This may damage the driveline com-
ponents or unexpectedly propel the vehicle forward or backward, causing an
accident.

243
2-1. Driving procedures
2
When driving
SIENNA_U (OM45477U)
Hor n
■After adjusting the steering wheel
Make sure that the steering wheel is securely locked.
The horn may not sound if the steering wheel is not securely locked.
(P. 137)
To sound the horn, press on or
close to the mark.

248 2-2. Instrument cluster and information display
SIENNA_U (OM45477U)
■Indicators
The indicators inform the driver of the operating state of the
vehicle’s various systems.
Turn signal indicator
(P. 241)
(if equipped)
Cruise control indicator
(P. 293, 298)
Headlight high beam
indicator ( P. 268)
(if equipped)
Cruise control “SET”
indicator
(P. 293, 298)
(U.S.A.)
Headlight indicator
(P. 266)
(if equipped)
Radar cruise control
indicator ( P. 298)
(Canada)
Tail light indicator
(P. 266)
(if equipped)
Radar cruise “READY”
indicator ( P. 298)
(if equipped)
Fog light indicator
(P. 280)SRS airbag on-off
indicator ( P. 183)
(if equipped)
Automatic High Beam
indicator (P. 273)
(if equipped)
Security indicator
(P. 159, 162)
*1

280
2-3. Operating the lights and wipers
SIENNA_U (OM45477U)
Fog light switch
: If equipped
The fog lights secure excellent visibility in difficult driving condi-
tions, such as in rain and fog.
Ty p e A
Turns the front fog
lights off
Turns the front fog
lights on

343
2
When driving
SIENNA_U (OM45477U)
2-5. Driving information
Cargo and luggage
Take notice of the following information about storage precau-
tions, cargo capacity and load:
●Stow cargo and luggage in the luggage compartment whenever
possible.
● Be sure all items are secured in place.
● To maintain vehicle balance while driving, position luggage
evenly within the luggage compartment.
● For better fuel economy, do no t carry unnecessary weight.

346 2-5. Driving information
SIENNA_U (OM45477U)
Roof luggage carrier (if equipped)■ Roof luggage carrier components
Roof rails
Cross rails
■ Adjusting the position of cross rails
Turn the knobs counterclockwise
to release the cross rails.
Slide the cross rails to the appro-
priate position for loading lug-
gage and turn the knobs
clockwise to tighten the cross
rails securely.

349
2-5. Driving information
2
When driving
SIENNA_U (OM45477U)
CAUTION
■Storage precautions
●Secure all items in the occupant compartment, as they may shift and
injure someone during sudden braking, sudden swerving or an acci-
dent.
●When you fold down the rear seats, long items should not be place
directly behind the front seats.
●Never allow anyone to ride in the luggage compartment. It is not
designed for passengers. They should ride in their seats with their seat
belts properly fastened. Otherwise,
they are much more likely to suffer
death or serious bodily injury, in t he event of sudden braking, sudden
swerving or an accident.
■Capacity and distribution
●Do not exceed the maximum axle weight rating or the total vehicle
weight rating.
●Even if the total load of occupant’s weight and the cargo load is less
than the total load capacity, do not apply the load unevenly.
Improper loading may cause deterioration of steering or braking con-
trol which may cause death or serious injury.
■Cross rail adjustment
Make sure the cross rails are locked securely by pushing forward and
rearward them.
Failure to do so may cause an unexpected accident.