2012 TOYOTA SIENNA sensor

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

312 2-4. Using other driving systems
SIENNA_U (OM45477U)
CAUTION
■When the sensor may not be correctly detecting the vehicle ahead
Apply the brakes as necessary when any of the following types of vehicles
are in front of you.
As the sensor may not be able to correctly detect these types of vehicles,
the approach warning ( P. 304) will not be activated, and a fatal or serious
accident may result.
● Vehicles that cut in suddenly
● Vehicles traveling at low speeds
● Vehicles that are not moving
● Vehicles with small rear ends (trailers with no load on board etc.)
● Motorcycles traveling in the same lane
■ Conditions under which the vehicle -to-vehicle distance control may
not function correctly
Apply the brakes as necessary in the following conditions as the radar sen-
sor may not be able to correctly detect vehicles ahead, and a fatal or serious
accident may result:
● When water or snow thrown up by the surrounding vehicles hinders the
functioning of the sensor
● When your vehicle is pointing upwards (caused by a heavy load in the lug-
gage compartment, etc.)
● When the road curves or when the lanes are narrow
● When steering wheel operation or your position in the lane is unstable
● When the vehicle ahead of you decelerates suddenly

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2
When driving
SIENNA_U (OM45477U)
CAUTION
■Handling the radar sensor
Observe the following to ensure the cruise control system can function effec-
tively:
Otherwise, the system may not function correctly and could result in an acci-
dent.
● Keep the sensor and grille cover clean at all times.
Clean the sensor and grille cover with a soft cloth so you do not mark or
damage them.
● Do not subject the sensor or surrounding area to a strong impact.
If the sensor moves even slightly off position, the system may malfunction.
If the sensor or surrounding area is subject to a strong impact, always
have the area inspected and adjusted by a Toyota dealer.
● Do not disassemble the sensor.
● Do not attach accessories or stickers to the sensor, grille cover or sur-
rounding area.
● Do not modify or paint the sensor and grille cover.
● Do not replace them with non-genuine parts.

314
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SIENNA_U (OM45477U)
Intuitive parking assist
: If equipped
The distance from your vehicle to nearby obstacles when parallel
parking or maneuvering into a garage is measured by the sensors
and communicated via the multi- information display, the touch
screen and a buzzer. Always check the surrounding area when using
this system.
■ Types of sensors
Front corner sensors (if
equipped)
Rear corner sensors
Rear center sensors
■ Intuitive parking assist switch
Turns the intuitive parking
assist on/off
When on, the indicator light
comes on and the buzzer
sounds to inform the driver
that the system is operational.

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When driving
SIENNA_U (OM45477U)
Display
When the sensors detect an obstacle, a graphic is shown on the multi
information display or touch screen depending on the position and
distance to the obstacle.
Multi-information display
Touch screen (with navigation system)
*
*
: Depending on the type of navigation system.

316 2-4. Using other driving systems
SIENNA_U (OM45477U)
The distance display and buzzerWhen a sensor detects an obstacle, the direction of and the approxi-
mate distance to the obstacle are displayed and the buzzer sounds.
■ Corner sensor operation and distance to an obstacle
The system operates when the ve hicle approaches within the fol-
lowing distances to an obstacle. The indicator flashes and the
buzzer sounds when the system is operating.
Front (if equipped)
Rear
Approximate distance to obstacleIndicator and buzzer / Color
2.0 to 1.2 ft. (60 to 37.5 cm) Intermittent / yellow
1.2 to 0.8 ft. (37.5 to 25 cm) Fast intermittent / yellow
0.8 ft. (25 cm) or less Continuous / red
Approximate distance to obstacleIndicator and buzzer / Color
2.8 to 1.2 ft. (85 to 37.5 cm) Intermittent / yellow
1.2 to 0.8 ft. (37.5 to 25 cm) Fast intermittent / yellow
0.8 ft. (25 cm) or less Continuous / red

317
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2
When driving
SIENNA_U (OM45477U)■
Back sensor operation and distance to an obstacle
The system operates when the vehi cle approaches within the fol-
lowing distances to an obstacle. The indicator flashes and the
buzzer sounds when the system is operating.
Approximate distance to obstacleIndicator and buzzer / Color
5.9 to 2.8 ft. (180 to 85 cm) Slow intermittent / yellow
2.8 to 1.5 ft. (85 to 45 cm) Intermittent / yellow
1.5 to 1.1 ft. (45 to 35 cm) Fast intermittent / yellow
1.1 ft. (35 cm) or less Continuous / red

318 2-4. Using other driving systems
SIENNA_U (OM45477U)
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
Vehicles without a smart key system: The engine switch is in the “ON” posi-
tion.
Vehicles with a smart key system: The “ENGINE START STOP” switch is in
IGNITION ON mode.
● Front corner sensors:
• The shift lever is not in P.
• The vehicle speed is approximately 6 mph (10 km/h) or less.
● Rear corner and back sensors:
The shift lever is in R.