2009 TOYOTA SIENNA Owners Manual

209
2-4. Using other driving systems
2
When driving
Intuitive parking assist (if equipped)
The distance to obstacles measured by the sensors is communi-
cated via the indicator and a buzzer when parallel parking or maneu-
vering into a garage. Always check the surrounding area when using
this system.
■ Types of sensors
Front corner sensors (if
equipped)
Rear corner sensors
Back sensors
■ Intuitive parking assist indicator and switch
Intuitive parking assist indi-
cator
Intuitive parking assist
switch
On/off
When on, the indicator is
displayed and the buzzer
sounds to inform the driver
that the function is opera-
tional.

210 2-4. Using other driving systems
The indicator and buzzer system■ Corner sensor operation and distance to an obstacle
The system operates when the vehicle approaches within following
distance to an obstacle. The in dicator flashes and the buzzer
sounds when the system is operating.
Front (if equipped)
ft. (cm)
Rear ft. (cm)
Distance to an obstacleIndicator and buzzer
Approximately 2.0 - 1.3 (60 - 40) Intermittent
Approximately 1.3 - 0.8 (40 - 25) Fast intermittent
Approximately 0.8 or less (25 or less) Continuously
Distance to an obstacleIndicator and buzzer
Approximately 2.8 - 1.7 (85 - 52) Intermittent
Approximately 1.7 - 0.8 (52 - 25) Fast intermittent
Approximately 0.8 or less (25 or less) Continuously

211
2-4. Using other
driving systems
2
When driving
■Back sensor operation and distance to an obstacle
The system operates when the vehicle approaches within following
distance to an obstacle. The in dicator flashes and the buzzer
sounds when the system is operating.
ft. (cm)
Distance to an obstacleIndicator and buzzer
Approximately 5.9 - 3.0 (180 - 90) Intermittent
Approximately 3.0 - 1.8 (90 - 55) Fast intermittent
Approximately 1.8 or less (55 or less) Continuously

212 2-4. Using other driving systems
Detection range of the sensorsApproximately 2.0 ft. (60 cm)
Approximately 2.8 ft. (85 cm)
Approximately 5.9 ft. (180 cm)
The diagram shows the detection
range of the sensors. Note that
the sensors cannot detect obsta-
cles that are extremely close to
the vehicle.
The range of the sensors may
change depending on the shape
of the object etc.
*: if equipped
*
■Intuitive parking assist can be operated when
The engine switch is in the “ON” position and the shift lever is not in P.
■ Rear corner and back sensor s can be operated only when
The shift lever is in R.
■ Front corner sensors can be operated when
●The shift lever is in R.
● The shift lever is not in P or R and vehicle speed is approximately 6 mph
(10 km/h) or less.

213
2-4. Using other
driving systems
2
When driving
■Sensor detection information
●Certain vehicle conditions and the surrounding environment may affect
the ability of the sensor to correctly detect obstacles. Particular instances
where this may occur are listed below.
• There is dirt, snow or ice on the sensor.
• The sensor is frozen.
• The sensor is covered in any way.
• The vehicle is leaning considerably to one side.
• On an extremely bumpy road, on an incline, on gravel, or on grass
• The vicinity of the vehicle is noisy due to vehicle horns, motorcycle
engines, air brakes of large vehicles, or other loud noises producing
ultrasonic waves.
• There is another vehicle equipped with parking assist sensors in the vicinity.
• The sensor is coated with a sheet of spray or heavy rain.
• The vehicle is equipped with a fender pole or wireless antenna.
• The bumper or sensor receives a strong impact.
• The vehicle is approaching a tall or curved curb.
• In harsh sunlight or intense cold weather
In addition to the examples above, there are instances in which, because of
their shapes, signs and other objects may be judged by the sensor to be
closer than they are.
● The shape of the obstacle may prevent the sensor from detecting it. Pay
particular attention to the following obstacles:
• Wires, fences, ropes etc.
• Cotton, snow and other materials that absorb radio waves
• Sharply-angled objects
• Low obstacles
• Tall obstacles with upper sections projecting outwards in the direction
of your vehicle
• Objects just under the bumper
• Objects very close to your vehicle
• A person near the vehicle (depending on the type of clothes worn)

214 2-4. Using other driving systems
■When to contact your Toyota dealer
In the following cases, have your Toyota dealer check the system.
●When the bumper is damaged.
● When the indicator is continuously on.
■ Certification (Canada only)
This ISM device compiles with Canadian ICES-001.
CAUTION
■Caution when using the Intuitive parking assist
●The Intuitive parking assist is intended as an aid to assist you to park and
is not a substitute for your persona l judgment. Make your driving decisions
based on your observations.
● Do not attach accessories or other objects to the vehicle within the sensor
perceptible area. Doing so may cause the system to malfunction, which
might result in an accident.
● In certain situations, the system will not function properly and when the
vehicle approaches certain objects, the system will not detect those
objects. Therefore, always observe the area around the vehicle and do not
rely solely on the system.
NOTICE
■ Notes when washing the vehicle
Do not apply intensive bursts of water or steam to the sensor area.
Doing so may result in the sensor malfunctioning.

215
2-4. Using other driving systems
2
When driving
Driving assist systems
When VSC and TRAC are operating
If the vehicle is in danger of slip-
ping or the front wheels (2WD
models), or 4 wheels (AWD mod-
els) spin, the indicator flashes to
indicate that VSC/TRAC system
have been engaged.
A buzzer (intermittent) sounds to
indicate that VSC is operating.
To help enhance driving safety and performance, the following sys-
tems operate automatically in res ponse to various driving situations.
Be aware, however, that these systems are supplementary and
should not be relied upon too heavi ly when operating the vehicle.
■ABS (Anti-lock Brake System)
Helps to prevent wheel lock when the brakes are applied suddenly, or if
the brakes are applied while driving on a slippery road surface.
■Brake assist
Generates an increased level of braking force after the brake pedal is
depressed, when the system detects a panic stop situation.
■VSC (Vehicle Stability Control)
Helps the driver to control skidding when swerving suddenly or turning
on slippery road surfaces.
■TRAC (Traction Control)
Maintains drive power and prevents the front wheels (2WD models) or
4 wheels (AWD models) from spinning when starting the vehicle or
accelerating on slippery roads.

216 2-4. Using other driving systems
To disable TRAC (2WD models only)If the vehicle gets stuck in fresh snow or mud, TRAC may reduce
power from the engine to the wheels. You may need to turn the sys-
tem off to enable you to rock the vehicle in order to free it.
■ Turning off TRAC
Push the button to turn off
TRAC.
The “TRAC OFF” indicator light
should come on.
Push the button again to turn the
system back on.
■ Automatic reactivation of TRAC (2WD models only)
Turning the engine switch off after turning off the TRAC system will automat-
ically re-enable it.
■ Sounds and vibrations caused by ABS, brake assist, VSC and TRAC
●A sound may be heard from the engine compartment when the engine is
started or just after the vehicle begins to move. This sound does not indi-
cate that a malfunction has occurred in any of these systems.
● Any of the following conditions may occur when the above systems are
operating. None of these indicates that a malfunction has occurred.
• Vibrations may be felt through the vehicle body and steering.
• A motor sound may be heard after the vehicle comes to a stop.
• The brake pedal may pulsate slightly after ABS is activated.
• The brake pedal may move down slightly after ABS is activated.