Toyota 2006 Sienna Owner's Manual page 230

If a vehicle is detected ahead of you—
2. Deceleration cruising function: If a
slower moving vehicle is
ahead of you, your vehicle cruising
speed decreases within the range of
about 40 km/h (25 mph) to about 135
km/h (85 mph). The display shows the
preset speed, the detected
ahead and selected vehicle- to- vehicle
distance. If your vehicle gets closer to
the vehicle ahead because of insuffi-
cient automatic deceleration, then the
alarm warns you to also manually ap-
ply brakes.
3. Follow- up cruising function: After de-
celeration, your vehicle cruising speed
changes in proportion to the speed of
the vehicle ahead to maintain an ap-
propriate distance from your vehicle to
the vehicle ahead. The vehicle- to- ve-
hicle distance can be changed. For de-
tails, see "CHANGING VEHICLE- TO-
VEHICLE DISTANCE" on page 225.
4. Acceleration cruising function: If the
vehicle ahead changes lanes, your ve-
hicle cruising speed will be gradually
increased up to the preset speed, and
your vehicle resumes fixed- speed
cruising.
This system operates by detecting pri-
marily the reflectors of
ahead. The distance may not be accu-
detected
rately or absolutely detected in the fol-
lowing cases:
D
The vehicle ahead has higher ground
clearance, which
vehicle
placement of the reflectors is in a
higher position.
D The rear section of the vehicle ahead
is extremely dirty.
D
The vehicle ahead or other vehicles
around you are flinging up water or
snow.
D Excessive exhaust gas (black smoke)
is coming from the vehicle ahead or
other vehicles around you, obscuring
your front view.
D
There is an obstruction (protective
film, sticker, etc.) on the reflectors
on the vehicle ahead, or reflectors
are not installed
ahead or are damaged.
D
Heavy luggage
compartment or rear seats is caus-
ing the nose of your vehicle to tilt
up.
06 SIENNA_U (L/O 0603)
the vehicle
To avoid accidents, always keep the
laser radar sensor glass clean and
never allow it to be covered with
icicle or any substance, so it can de-
means that the
tect the vehicle in front. (See "LASER
RADAR SENSOR" on page 226.)
on the vehicle
in the luggage
2006 SIENNA from March '06 Prod. (OM45443U)
CAUTION
219