Toyota sienna 2004 Service Manual page 198

This system operates by detecting pri-
marily the reflectors of the vehicle
ahead. The distance may not be accu-
rately or absolutely detected in the fol-
lowing cases:
D
The vehicle ahead has higher ground
clearance, which means that
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 on the vehicle
ahead or are damaged.
D
Heavy luggage in the luggage
compartment or rear seats is caus-
ing the nose of your vehicle to tilt
up.
198
04 SIENNA_U (L/O 0408)
CAUTION
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-
the
tect the vehicle in front. (See "LASER
RADAR SENSOR" on page 205.)
I n f o r ma t i o n P r o v i d e d b y :
CAUTION
Do not rely excessively on dynamic
laser cruise control. Observe the fol-
lowing precautions in order to avoid
serious injury or death:
D
Under certain conditions where the
vehicle in front slows drastically, or
is stopped, the dynamic laser cruise
control will neither warn you nor
decelerate. You must depress the
brake pedal to slow down, ensuring
collision avoidance or that suffi-
cient vehicle−to−vehicle distance is
maintained.
D
Do not use dynamic laser cruise
control in the following conditions:
In bad weather (such as rain, fog,
snow, sandstorms or direct sun-
light, or when raindrops or snow-
flakes get on the laser radar sensor
glass), the vehicle−to−vehicle dis-
tance will not be measured accura-
tely.
When using the windshield wipers
at high or low speeds the dynamic
laser radar cruise control turns off.
2004 SIENNA from Aug. '04 Prod. (OM45422U)