2004 TOYOTA SIENNA light

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Vehicletovehicle distance control mode
Conventional (fixed speed) cruise control
mode
The dynamic laser cruise control func-
tion has two cruise control modes.
Vehicle−to −vehicle distance control
mode for maintaining an appropriate
distance between vehicles
Conventional (fixed speed) cruise con-
trol mode for cruising at preset speeds
You can change the mode by using the
control lever.
The two cruise control modes function dif-
ferently. If you use dynamic laser cruise
control, always confirm which mode is se-
lected.
For the vehicle −to −vehicle distance control
mode, see “—Vehicle −to −vehicle distance
control mode” on page 196. For the con-
ventional (fixed speed) cruise control
mode, see “—Conventional (fixed speed)
cruise control mode” on page 207. The laser radar sensor in this system
primarily detects the reflectors of the
vehicle ahead of you to determine the
presence of the vehicle ahead as well
as measuring the vehicletovehicle dis-
tance. The detection range of the sen-
sor is about 120 m (400 ft.) ahead.
CAUTION
Dynamic laser cruise control is not a
collisionavoidance system and will
not prevent accidents. Dynamic laser
cruise control is a vehicle speed con-
trol device that is intended for use
only on freeways or roads where the
traffic is light or moderate. To avoid
serious injury, you must use caution
and be attentive to road and traffic
conditions while using dynamic laser
cruise control.
—Dynamic laser cruise control
modes
—Vehicletovehicle distance
control mode

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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:
The vehicle ahead has higher ground
clearance, which means that the
placement of the reflectors is in a
higher position.
The rear section of the vehicle ahead
is extremely dirty.
The vehicle ahead or other vehicles
around you are flinging up water or
snow.
Excessive exhaust gas (black smoke)
is coming from the vehicle ahead or
other vehicles around you, obscuring
your front view.
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.
Heavy luggage in the luggage
compartment or rear seats is caus-
ing the nose of your vehicle to tilt
up.
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-
tect the vehicle in front. (See “LASER
RADAR SENSOR” on page 205.)
CAUTION
Do not rely excessively on dynamic
laser cruise control. Observe the fol-
lowing precautions in order to avoid
serious injury or death:
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 vehicletovehicle distance is
maintained.
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 vehicletovehicle 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.

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Dynamic laser cruise control should not
be used in circumstances which are inap-
propriate for any cruise control, such as
entering free way on−ramps or off −ramps.
CAUTION
Do not use dynamic laser cruise
control when exiting from or when
entering or merging onto a freeway.
When you are following a slower
moving vehicle and exiting, the sen-
sor does not detect the vehicle and
will accelerate to the preset speed.
If other vehicles are driving outside
of the laser radar detection range,
a delay in the detection of the ve-
hicle cutting in at short range or
failure to detect a motorcycle run-
ning on the side of the same lane
will occur. In this case, the dynamic
laser cruise control system will not
function properly.
When a slower vehicle in front of
you leaves the lane, the dynamic
laser cruise control will no longer
detect a vehicle ahead and will at-
tempt to accelerate the vehicle to
the faster preset speed.
TURNING THE SYSTEM ON
To operate dynamic laser cruise control,
press the “ON −OFF” button. This turns the
system on. When the “CRUISE” and
“READY” indicator lights in the instrument
cluster come on, you can now set your
desired cruising speed and vehicle −to −ve-
hicle distance. Pressing the “ON −OFF”
button again will turn the system com-
pletely off.
When the ignition is turned off, the system
is also automatically turned off. To use
dynamic laser cruise control again, press
the “ON −OFF” button again to turn it on.

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When the ignition is turned off, all the
preset data is cleared. When you use the
dynamic laser cruise control again, you
need to reset the data.
CAUTION
To avoid accidentally engaging the
cruise control, keep the “ONOFF”
button off when not using the dynam-
ic laser cruise control.
SETTING THE DESIRED SPEED
The transmission must be in “D” before
you set the cruise control speed.
Bring your vehicle to the desired speed,
push the lever down in the “− SET” direc-
tion and release it. This sets the vehicle
at that speed. At this time, the display
indicates settings such as the preset ve-
hicle speed, whether a vehicle is present
ahead and selected vehicle −to −vehicle dis-
tance. If there is no vehicle detected
ahead, the display does not indicate the
vehicle ahead. You can now take your foot
off the accelerator pedal. If you need to accelerate—for example,
when passing—depress the accelerator
pedal enough for the vehicle to exceed
the preset speed. When you release the
accelerator pedal, the vehicle will return to
the control prior to acceleration.
You cannot set a desired speed if the
master warning light comes on, the alarm
sounds and the display indicates one of
the warning codes “E1”, “E2” or “E3”. If
any of the above codes appears on the
display, see “VEHICLE
−TO −VEHICLE
DISTANCE CONTROL MODE FAILURE
WARNING” on page 206.
CANCELLING THE PRESET SPEED
You can cancel the preset speed by doing
any of the following:
a. Pulling the lever in the “CANCEL” direction.
b. Depressing the brake pedal. c. Pressing the “ON −OFF” button.
If cancelled by a. or b., the “READY”
indicator comes on and the dynamic laser
cruise control enters the ready mode.
If cancelled by c., the “CRUISE” indicator
light goes off in the instrument panel. In
this case, the preset speed data is
cleared, and you must set the speed from
the beginning.

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In the following cases, the preset speed
automatically cancels out:a. The vehicle speed falls below about 40 km/h (25 mph). (40 km/h (25 mph) is
designated as a cancel speed.)
b. The slip indicator light blinks and an alarm sounds. (This occurs when the
vehicle is about to skid.)
If cancelled by a. or b., the “READY”
indicator comes on and the dynamic laser
cruise control enters the ready mode.
If one of the warning codes “E1”, “E2” or
“E3” appears on the display, the preset
speed automatically cancels out. See
“VEHICLE −TO −VEHICLE DISTANCE
CONTROL MODE FAILURE WARNING” on
page 206.
If the preset speed automatically cancels
out for other than the above reasons, do
not operate the dynamic laser cruise con-
trol. Although there is no problem to con-
tinue driving, please contact your Toyota
dealer. RESETTING TO A FASTER SPEED
Push the lever up in the “+ RES” direction
and hold it. The displayed speed will in-
crease in increments of 5 mph (for the
U.S.A.) or 5 km/h (for Canada). Release
the lever when the desired speed is attai-
ned. The vehicle speed will gradually in-
crease to the display speed.
However, a faster way to reset is to ac-
celerate the vehicle and then push the
lever down in the “− SET” direction.
CAUTION
When the vehicletovehicle distance
control is on, your cruising speed is
regulated in proportion to the speed
of the vehicle ahead, so increasing
the preset speed using the control
lever does not accelerate the vehicle.
However, if the vehicle ahead leaves
the lane, your cruising speed will in-
crease to the preset speed because
the preset speed has been set higher
using the control lever. Confirm the
setting on the display.
RESETTING TO A SLOWER SPEED
Push the lever down in the “
− SET” direc-
tion and hold it. The displayed speed will
decrease in increments of 5 mph (for the
U.S.A.) or 5 km/h (for Canada). Release
the lever when the desired speed is attai-
ned. The vehicle speed will gradually de-
crease to the display speed.
However, a faster way to reset is to de-
press the brake pedal and then push the
lever down in the “− SET” direction.
If the control lever is released when the
vehicle speed exceeds the upper limit of
the preset speed traveling downhill while
you are pushing the lever down, the sys-
tem will memorize the upper limit of the
preset speed as a preset speed.
Even if you downshift from “D” to “4” in
the vehicle −to −vehicle distance control
mode, engine braking will not be enabled
because this mode is not cancelled. To
decrease the vehicle speed, reset to a
slower speed with the cruise control lever
or depress the brake pedal. If you use the
brake pedal, cruise control is cancelled.

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VEHICLETOVEHICLE DISTANCE
CONTROL MODE FAILURE WARNING
If there is trouble somewhere in the dy-
namic laser cruise control while the ve-
hicle−to −vehicle distance control mode is
on, the master warning light comes on
and the alarm sounds, and one of the
warning codes “E1”, “E2” or “E3” will ap-
pear on the display. Dynamic laser cruise
control is automatically cancelled.
If “E3” appears on the display, the
“CRUISE” indicator light in the instrument
cluster also flashes. If “E1” appears on the display,
the sys-
tem cannot easily measure the vehicle −to −
vehicle distance because of a dirty laser
radar sensor glass while the dynamic la-
ser cruise control is on.
If this code appears, clean the sensor
glass with a soft cloth and try setting the
preset speed again. If the dirt is removed
without cleaning, the system will automati-
cally enter the ready mode.
If the system does not enter the ready
mode even after cleaning or the code re-
mains on the display, the system might be
malfunctioning. Although there is no prob-
lem to continue driving, please contact
your Toyota dealer.
CAUTION
Always keep the sensor glass and
never allow it to be covered with
icicle or any substance, so it can de-
tect the vehicle in front.
If “E2” appears on the display, the sys-
tem cannot easily measure the vehicle −to −
vehicle distance because of the following
conditions:
The wipers are operating at high or low
speeds
Direct sunlight from the front
It is difficult to make a measurement
because of bad weather (such as rainy,
foggy, or snowy weather)
In the following cases, dynamic laser
cruise control switches to the ready mode:
The wipers are stopped or are
switched to intermittent operation.
No direct sunlight from the front
In the above conditions, push the lever up
in the “+ RES” direction and release it.
Dynamic laser cruise control will be re-
stored. If the setting operation cannot be
performed or if the warning code still ap-
pears even after the weather clears, the
system might have malfuncti oned. Al-
though there is no problem to continue
driving, please contact your Toyota dealer.

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If “E3” appears on the display, a system
malfunction has been detected.
If this code appears, stop your vehicle in
a safe place, turn the ignition off, and
then restart it to reset the system. If the
setting still cannot be made or the same
code appears again, the system might
have malfunctioned. Although there is no
problem to continue driving, please con-
tact your Toyota dealer. This mode allows you to cruise at a
desired speed over about 45 km/h (28
mph) with your foot off the accelerator
pedal.
Your cruising speed can be maintained up
or down grades within the limits of engine
performance, although a slight speed
change may occur when driving up or
down the grades. On steeper hills, a
greater speed change will occur so it is
better to drive without the cruise control.
CAUTION
In the conventional (fixed speed)
cruise control mode, the approach
warning does not activate and no
alarm will sound even if you are
too close to the vehicle ahead, as
neither the presence of the vehicle
ahead nor the vehicletovehicle
distance is detected. Pay special
attention to the distance between
your vehicle and the vehicle ahead.
Always confirm the setting in the
display.
Do not use the conventional (fixed
speed) mode in the following condi-
tions, or serious injury or death
could result:
To help maintain maximum control
of your vehicle, do not use conven-
tional cruise control mode when us-
ing dynamic laser cruise control
while driving in heavy or varying
traffic, or on slippery (rainy, icy or
snowcovered) or winding roads.
Avoid vehicle speed increasing
when driving downhill. If the vehicle
speed is too fast in relation to the
preset speed in the conventional
cruise control mode, cancel the
conventional cruise control mode
and then downshift the transmis-
sion to use engine braking to slow
down.
—Conventional (fixed speed)
cruise control mode

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TURNING THE SYSTEM ON
To operate conventional cruise control
mode, press the “ON−OFF” button. This
turns the system on. The “CRUISE” and
“READY” indicator lights in the instrument
cluster comes on. Push the lever in the
“MODE” direction for longer than 1 second
to change to conventional cruise control
mode. The indicator in the instrument
cluster is as shown. You can now set
your desired cruising speed. Pressing the
“ON −OFF” button again will turn the sys-
tem completely off. However, once the vehicle
−to −vehicle dis-
tance control mode activates and is used,
it cannot be changed to the conventional
cruise control mode using the above op-
eration. To change the mode, press the
“ON −OFF” button to turn the system off
and then press it again to turn it on. Next
push the lever in the “MODE” direction for
longer than about 1 second.
To change to the vehicle− to−vehicle dis-
tance control mode from the conventional
cruise control mode, push the lever in the
“MODE” direction for longer than about 1
second.
CAUTION
To avoid accidentally engaging cruise
control, keep the “ONOFF” button
off when not using dynamic laser
cruise control.
SETTING THE DESIRED SPEED
The transmission must be in “D” before
you set the cruise control speed in the
conventional cruise control mode.
Bring your vehicle to the desired speed,
push the lever down in the “ − SET” direc-
tion and release it. This sets the vehicle
at that speed and the display shows the
preset speed. You can now take your foot
off the accelerator pedal.
If you need to accelerate—for example,
when passing—depress the accelerator
pedal enough for the vehicle to exceed
the preset speed. When you release the
accelerator pedal, the vehicle will return to
the speed set prior to acceleration.