2004 TOYOTA SIENNA warning

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2004 SIENNA from Aug. ’04 Prod. (OM45422U)
Dynamic laser cruise control allows you
to drive at a selected cruising speed
over about 45 km/h (28 mph) with your
foot off the accelerator pedal, maintain-
ing an appropriate vehicletovehicle
distance.
CAUTION
Do not rely excessively on dynamic
laser cruise control in order to avoid
serious injury or death, or to prevent
accidents or to control the vehicle’s
speed in emergency situations. Do
not use cruise control except in ap-
propriate road and traffic conditions.
Always drive carefully and attentively.
Before using dynamic laser cruise
control, read and understand the fol-
lowing instructions.
Steering wheel
Instrument cluster
1. Cruise control switch
2. Distance switch
3. Display
4. “NORM.” indicator light (conventional cruise control mode
indicator light)
5. “CRUISE” indicator light
6. “READY” indicator light (ready mode indicator light)
7. Master warning light
Dynamic laser cruise control—

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On roads with heavy traffic or
sharp bends, an appropriate speed
cannot be maintained and an acci-
dent may occur.
On slippery road surfaces (icy or
snowcovered road surfaces), the
tires will race and you will be un-
able to control the vehicle.
When there is no vehicle detected
ahead on steep downhill slopes, the
preset speed will be easily exceed-
ed because of inefficient engine
braking. (In this case, automatic
braking will not work.) If there is a
vehicle detected ahead, the delay in
deceleration timing could cause se-
rious injury or death.
When the alarm sounds frequently
(because acceleration or decelera-
tion was repeated or sufficient ve-
hicletovehicle distance was not
maintained), an appropriate vehicle
speed cannot be attained and an
accident may occur.On roads with steep and short in-
clines and declines, failure to de-
tect the vehicle ahead will shorten
the distance between your vehicle
and the vehicle ahead and an acci-
dent may occur.
Deceleration cruising function and
approach warning do not operate
when the vehicle ahead is at a stop
or driving very slowly.
If the vehicle ahead of you deceler-
ates abruptly or if another vehicle
cuts in ahead of you, your vehicle
may collide with the vehicle ahead
unless you manually depress the
brake pedal to slow down your ve-
hicle.
Depending on the road configura-
tion (curved, left and right continu-
ous curved, the start or end of a
curve, or narrow driving lanes due
to road construction) or your ve-
hicle condition (steering wheel ma-
neuvering, position in the lane, or
unstable driving because of an acci-
dent or breakdown), vehicles in oth-
er lanes or surrounding objects
may be detected, resulting in a con-
trol failure or the approach warning
activation. This may also result in
a very close distance between vehi-
cles due to a failure to detect the
vehicle ahead.

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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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Select the vehicle−to −vehicle distance con-
sidering traffic conditions. The approximate
vehicle −to −vehicle distance based on time
interval when driving at 88 km/h (55 mph)
is shown below:
LONG about 75 m (245 ft.)
. . . . . . . . . . .
MIDDLE about 50 m (165 ft.)
. . . . . . . . . .
SHORT about 30 m (100 ft.)
. . . . . . . . . .
If the vehicle speed is slower than 88
km/h (55 mph), the distance will be short-
er than the above.
During long downhill driving, the vehicle −
to −vehicle distance will be shorter than
the selected distance.
BRAKING CONTROL
Dynamic laser cruise control is not a colli-
sion avoidance system. If the approach
warning is activated, depress the brake
pedal to decelerate to ensure an appropri-
ate vehicle− to−vehicle distance.
If you are getting closer to the vehicle
ahead at a relatively higher speed than
that of the vehicle ahead or if engine
braking cannot be applied properly, brak-
ing control is automatically activated. At
this time, the display flashes. Braking control is operating only when the
vehicle
−to −vehicle distance control mode
is selected and your vehicle speed ex-
ceeds about 40 km/h (25 mph). If the
speed decreases below about 40 km/h (25
mph), braking control will cease, requiring
the manual application of brakes.
CAUTION
Braking control will not ensure that
your vehicle will reduce speed ap-
propriately. You must depress the
brake pedal to slow down, ensuring
collision avoidance or that sufficient
vehicletovehicle distance is main-
tained.
APPROACH WARNING
While you are cruising in the vehicle −to −
vehicle distance control mode, if the ve-
hicle ahead decelerates abruptly or if
another vehicle cuts in ahead of you, in-
adequate braking will make your vehicle
become closer to the vehicle ahead of you
and the display will flash and beep.

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2004 SIENNA from Aug. ’04 Prod. (OM45422U)
CAUTION
If the display flashes and beeps,
you must depress the brake pedal
to slow down to avoid a collision
or maintain sufficient vehicletove-
hicle distance.
In the following conditions, the ap-
proach warning may not turn on
even if the vehicle drives closer to
the vehicle ahead, and an accident
may occur:
Your vehicle and the vehicle ahead
are cruising at almost the same
speed.
The vehicle ahead is cruising at a
faster speed than yours. (The dis-
tance between the vehicles will be-
come longer.)
The vehicle ahead is at a stop or
driving very slowly. Pay special
attention to a very slow vehicle at
the end of the line in heavy traffic
or at a tollgate.
The speed has just been set.
The accelerator pedal is depressed
or has just been released.
LASER RADAR SENSOR
The laser radar sensor is used for ve-
hicletovehicle distance control cruis-
ing.
If dirt is on the sensor glass, the
dynamic laser cruise control function is
automatically cancelled and a warning
code appears on the display. (See
“VEHICLETOVEHICLE DISTANCE
CONTROL MODE FAILURE WARNING”
on page 206.)
However, if the glass sensor is covered
with icicle or any substance, dirt may
not be detected.Before driving in the vehicletovehicle
distance control mode, make sure the
radar sensor glass is clean.
This product is a class I laser product
complied with 21 C.F.R part 1040.10
and 1040.11.
CAUTION
To ensure that dynamic laser cruise
control will function properly while
driving, observe the following:
Always keep the laser radar sensor
glass clean. When cleaning, use a
soft cloth and be careful not to
damage the sensor.
Avoid strong impacts around the la-
ser radar sensor. An incorrect laser
radar sensor alignment will result in
system malfunction. A special de-
vice is required to adjust the laser
radar sensor alignment. Be sure to
have the sensor adjusted by your
Toyota dealer.
Do not affix a sticker (including a
transparent sticker) or attach an ac-
cessory around the laser radar sen-
sor.

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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