2009 TOYOTA SIENNA Owners Manual

201
2-4. Using other
driving systems
2
When driving
■Changing the vehicle -to-vehicle distance
Each pull of the switch toward
you changes the vehicle-to-
vehicle distance.
Long
Medium
Short
The vehicle-to-vehicle distance
is automatically set to the long
mode when the engine switch
is turned to the “ON” position.
A mark will be displayed to
indicate the presence of the
vehicle if a vehicle is running
ahead of you.
Preceding
vehicle mark

202 2-4. Using other driving systems
Driving in vehicle-to-vehicle distance control mode This mode employs a laser radar sensor to detect the presence of
vehicles within 400 ft. (120 m) ahead and to judge the distance
between your vehicle and those vehicles.
Note that vehicle-to-vehicle distanc e will close when traveling on long
downhill slopes.
Example of constant speed cruising (when there are no vehicles
ahead):
When set to 62 mph (100 km/h)
The vehicle travels at the speed set by the driver. The desired vehicle-to-
vehicle distance can also be set by operating the vehicle-to-vehicle dis-
tance switch.
Example of deceleration cruising (when the vehicle ahead is driv-
ing slower than the set speed):
When fixed speed cruising is set at 62 mph (100 km/h) and the
vehicle ahead is driving at 50 mph (80 km/h)
When a vehicle is detected running ahead of you, in the same lane, the
system automatically decelerates your vehicle. When a greater reduction
in vehicle speed is necessary, the system applies the brakes. A warning
tone warns you when the system cannot decelerate sufficiently to prevent
your vehicle from closing on the vehicle ahead.

203
2-4. Using other
driving systems
2
When driving
Example of follow-up cruising (when following a vehicle driving
slower than the set speed):
When the speed is set to 62 mph (100 km/h) and the vehicle ahead
is driving at 50 mph (80 km/h)
The system continues follow-up cruising while adjusting for changes in the
speed of the vehicle ahead in order to maintain the vehicle-to-vehicle dis-
tance set by the driver.
Example of acceleration (when there are no longer vehicles driving
slower than the set speed in the lane ahead):
When the speed is set to 62 mph (100 km/h) and the vehicle ahead
driving at 50 mph (80 km/h) is out of the lane
When the vehicle ahead of you executes a lane change, the system
slowly accelerates until the set vehicle speed is reached. The system then
returns to fixed speed cruising.
■Fine adjustment of the set speed
Adjustment of the set speed by the following speed can be made by lightly
pressing the lever up or down and releasing it.
In the constant speed control mode: Approximately 1.0 mph (1.6 km/h)
In the vehicle-to-vehicle distance control mode:
U.S.A.: Approximately 5 mph (8 km/h)
Canada and Mexico: Approximately 5 km/h (3 mph)

204 2-4. Using other driving systems
■Dynamic laser cruise control warnings
If a system malfunction is detected, dynamic laser cruise control master
warning light comes on, the “CRUISE” indicator light flashes, the buzzer
sounds, and a warning code appears on the display to alert you to the need
for caution while driving.
The warning codes indicate the following.
If the same code appears again after implementing the correction procedure,
or if the cruise control cannot be set, contact your Toyota dealer.
Warning code
“CRUISE” indicator light
Dynamic laser cruise control master
warning light
Warning codeDetailsCorrection procedures
E1 Indicates that the
laser radar sensor is
dirty or covered with
ice.Clean the sensor.
E2 Indicates that the sys-
tem is unable to judge
the vehicle-to-vehicle
distance.• Stop the wipers or
switch the wiper
switch to intermittent
operation.
• Avoid direct sunlight.
• Wait until the weather becomes clear.
E3
(Flashing) Indicates that a sys-
tem malfunction has
been detected.
Turn off the engine
and restart it.

205
2-4. Using other
driving systems
2
When driving
■The dynamic laser cruise can be set when
●The shift lever is in D or 4.
● Vehicle speed is between the following speed.
U.S.A.: Approximately 28 mph (45 km/h) - 85 mph (137 km/h)
Canada: Approximately 45 km/h (28 mph) - 139 km/h (86 mph)
■ Accelerating
The vehicle can be accelerated normally.
■ Automatically canceling vehicle-to-vehicle distance control
Vehicle-to-vehicle distance control driving is automatically canceled in the
following situations.
●Vehicle speed falls below 25 mph (40 km/h).
● VSC is activated.
● The sensor cannot operate correctly because it is covered in some way.
*
●The windshield wipers are operating at high or low speed.*
*
: Vehicle-to-vehicle distance control driving must be reset by turning the “ON-OFF” button on again.
If vehicle-to-vehicle distance control driving is automatically canceled for any
other reason, there may be a malfunction in the system. Contact your Toyota
dealer.
■ Automatically cancelling fixed speed control
The set speed is automatically canceled in the following situations.
●Actual vehicle speed is more than 10 mph (16 km/h) below the preset
vehicle speed.
At this time, the memorized set speed is not retained.
● Vehicle speed falls below 25 mph (40 km/h).
● VSC is activated.

206 2-4. Using other driving systems
■Vehicle-to-vehicle distance settings
Select a distance from the table below. Note that the distances shown corre-
spond to a vehicle speed of 55 mph (88 km/h). Vehicle-to-vehicle distance
increases/decreases in accordance with vehicle speed.
■ Laser radar sensor
■ Certification
This product is a class I laser product complied with 21 C.F.R part 1040. 10
and 1040. 11.
Distance optionsVehicle-to-vehicle distance
Long Approximately 245 ft. (75 m)
Medium Approximately 165 ft. (50 m)
Short Approximately 100 ft. (30 m)
Always keep the sensor clean to ensure
that the vehicle-to-vehicle distance con-
trol operates properly. (Some obstruc-
tions, such as snow, ice or plastic objects,
cannot be detected by the obstruction
sensor.)
Dynamic laser cruise control is canceled
if an obstruction is detected.

207
2-4. Using other
driving systems
2
When driving
CAUTION
■Before using dynamic laser cruise control
Do not overly rely on vehicle-to-vehicle distance control.
Be aware of the set vehicle speed. If automatic deceleration/acceleration is
not appropriate, adjust the vehicle speed, as well as the distance between
your vehicle and vehicles ahead by applying the brakes, etc.
■ To avoid inadvertent cruise control activation
Keep the “ON-OFF” button off when not in use.
■ Situations unsuitable for dynamic laser cruise control
Do not use dynamic laser cruise control in any of the following situations.
Doing so may result in inappropriate control of speed and could cause seri-
ous or fatal accident.
●In heavy traffic
● On roads with sharp bends
● On winding roads
● On slippery roads, such as those covered with rain, ice or snow
● Where there are sudden changes between sharp up and down gradients
● At entrances to expressways
● When weather conditions are bad enough that they may prevent the sen-
sors from functioning correctly (fog, snow, sandstorm, etc.)
● Where buzzer can be heard often

208 2-4. Using other driving systems
CAUTION
■When the laser radar 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 proximity alarm ( P. 204) will not be activated, and an 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 laser radar
sensor may not be able to correctly detect vehicles ahead, and an 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
■ To ensure the laser rada r sensor functions correctly
Do not do the following to the sensor as doing so may cause the sensor not
to function correctly and could result in an accident.
● Stick or attach anything to it
● Leave it dirty
● Disassemble, subject it to strong shocks
● Modify or paint it
● Replace it with non-genuine parts