2004 TOYOTA SIENNA sensor

04 SIENNA_U (L/O 0408)
329
2004 SIENNA from Aug. ’04 Prod. (OM45422U)
The mirror angle can be adjusted by push-
ing its edge.
1: Rear sensors
2: Rear corner sensors
3: Front corner sensors
The Toyota park assist system is de-
signed to inform you of the approxi-
mate distance between your vehicle and
an obstruction by indicator and buzzer
while driving at approximate 10 km/h (6
mph) or less when parking the vehicle.
This system uses sensors to detect ob-
structions.
This system works when the ignition key
is at the “ON” position and the transmis-
sion is not in the “P” position.
Rear and rear corner sensors work
only when the transmission is in the
“R” position.
When the vehicle is forwarding, the
front corner sensors work.
Toyota park assist system
(type A)

04 SIENNA_U (L/O 0408)
330
2004 SIENNA from Aug. ’04 Prod. (OM45422U)
To turn on: Push the switch.
The indicator comes on and the buzzer
will sound.
To turn off: Push the switch again.
In the following cases, the buzzer will
sound several times and the indicator
will stay on to indicate that the system
is not working properly.
When the temperature is extremely low.
When any of the sensors are malfunc-
tion.If the indicator is continuously on, have
your Toyota dealer check the system.
If the indicator remains blinking but
you do not hear the buzzer sound,
clean the sensors with soft cloth.
Rear sensors
Rear corner sensors
Front corner sensors

04 SIENNA_U (L/O 0408)
331
2004 SIENNA from Aug. ’04 Prod. (OM45422U)
This system is designed to inform you of
the approximate distance between your
vehicle and an obstacle by indicator and
buzzer.
Rear sensorsDistance shown as A in
mm (in.)
Indicator and buzzer
Approximately 1800—900
(70.9—35.4)Intermittent
Approximately
900—550 (35.4—21.7)Fast
intermittent
Approximately
550 (21.7) or lessContinuous
Rear corner sensors
Distance shown as B in
mm (in.)
Indicator and buzzer
Approximately
850—520 (33.5—20.5)Intermittent
Approximately
520—250 (20.5—9.8)Fast
intermittent
Approximately
250 (9.8) or lessContinuous
Front corner sensors
Distance shown as C in
mm (in.)
Indicator and buzzer
Approximately
600—400 (23.6—15.7)Intermittent
Approximately
400—250 (15.7—9.8)Fast
intermittent
Approximately
250 (9.8) or lessContinuous
1: Front sensors
2: Rear corner sensors
3: Rear sensors

04 SIENNA_U (L/O 0408)
332
2004 SIENNA from Aug. ’04 Prod. (OM45422U)
Perceptible area
A: Approximately 1800 mm (70.9 in.)
B: Approximately 850 mm (33.5 in.)
C: Approximately 600 mm (23.6 in.)
Perceptible area is limited as shown in
the previous illustration. Check the area
around the vehicle before driving and start
driving slowly.CAUTION
The Toyota park assist system is
intended as an aid to assist you to
park and is not a substitute for
your personal judgment. Make your
driving decisions based on your ob-
servations.
Do not attach accessories or other
objects to the vehicle within the
sensor perceptible area. Doing so
may cause the system to malfunc-
tion, which might result in an acci-
dent.
In certain situations, the system
will not function properly and when
the vehicle approaches certain ob-
jects, the system will not detect
those objects. Therefore, always ob-
serve the area around the vehicle
and do not rely solely on the sys-
tem.
For vehicles sold in Canada
This ISM device compiles with Cana-
dian ICES001.

04 SIENNA_U (L/O 0408)
333
2004 SIENNA from Aug. ’04 Prod. (OM45422U)
In the following cases, the system may
not work properly.
When ice, snow, mud or other objects
build up on the sensor.
When the vehicle is parked in extreme-
ly high or extremely low temperature
for a long period.
When driving on bumpy or graveled
roads or on grass
When a device such as a horn from
another vehicle, motorcycle engine, or
an air brake sound from a heavy −duty
vehicle, issues ultrasonic waves, near
your vehicle
When attaching a two −way radio anten-
na
When rain or water splashes on the
sensor.
When operating the vehicle on an in-
clined surface
When a radio antenna or fender pole
is mounted on your vehicle.
When a towing hitch is mounted on
your vehicle. The system may not detect the follow-
ing.
Thin objects such as a wire or rope
Objects with a surface area too small
to reflect ultrasonic waves such as
wire gauze
Sound wave absorbing objects or mate-
rial such as cotton or snow
A person near the vehicle (depending
on the type of clothes worn)
Objects with a sharp edge
Small or short objects
Tall objects with an upper part project-
ing toward the vehicle
Objects just under the bumper
Objects very close to your vehicle
In the following cases, have your
Toyota dealer check the system.
When the bumper is damaged.
When the indicator is continuously on.
1: Rear sensors
2: Rear corner sensors
The Toyota park assist system is de-
signed to inform you of the approxi-
mate distance between your vehicle and
an obstruction by indicator and buzzer
while driving at approximate 10 km/h (6
mph) or less when parking the vehicle.
This system uses sensors to detect ob-
structions.
This system works when the ignition key
is at the “ON” position and the transmis-
sion is in the “R” position.
The sensors work only when the transmis-
sion is in the “R” position.
Toyota park assist system
(type B)

04 SIENNA_U (L/O 0408)
334
2004 SIENNA from Aug. ’04 Prod. (OM45422U)
To turn on: Push the switch.
The indicator comes on and the buzzer
will sound.
To turn off: Push the switch again.
In the following cases, the buzzer will
sound several times and the indicator
will stay on to indicate that the system
is not working properly.
When the temperature is extremely low.
When any of the sensors are malfunc-
tion.If the indicator is continuously on, have
your Toyota dealer check the system.
If the indicator remains blinking but
you do not hear the buzzer sound,
clean the sensors with soft cloth.
Rear sensors
Rear corner sensors

04 SIENNA_U (L/O 0408)
335
2004 SIENNA from Aug. ’04 Prod. (OM45422U)
This system is designed to inform you of
the approximate distance between your
vehicle and an obstacle by indicator and
buzzer.
Rear sensorsDistance shown as A in
mm (in.)
Indicator and buzzer
Approximately 1800—900
(70.9—35.4)Intermittent
Approximately
900—550 (35.4—21.7)Fast
intermittent
Approximately
550 (21.7) or lessContinuous
Rear corner sensors
Distance shown as B in
mm (in.)
Indicator and buzzer
Approximately
850—520 (33.5—20.5)Intermittent
Approximately
520—250 (20.5—9.8)Fast
intermittent
Approximately
250 (9.8) or lessContinuous
1: Rear corner sensors
2: Rear sensors
Perceptible area
A: Approximately 1800 mm (70.9 in.)
B: Approximately 850 mm (33.5 in.)
Perceptible area is limited as shown in
the previous illustration. Check the area
around the vehicle before driving and start
driving slowly.

04 SIENNA_U (L/O 0408)
336
2004 SIENNA from Aug. ’04 Prod. (OM45422U)
CAUTION
The Toyota park assist system is
intended as an aid to assist you to
park and is not a substitute for
your personal judgment. Make your
driving decisions based on your ob-
servations.
Do not attach accessories or other
objects to the vehicle within the
sensor perceptible area. Doing so
may cause the system to malfunc-
tion, which might result in an acci-
dent.
In certain situations, the system
will not function properly and when
the vehicle approaches certain ob-
jects, the system will not detect
those objects. Therefore, always ob-
serve the area around the vehicle
and do not rely solely on the sys-
tem.
For vehicles sold in Canada
This ISM device compiles with Cana-
dian ICES001.
In the following cases, the system may
not work properly.
When ice, snow, mud or other objects
build up on the sensor.
When the vehicle is parked in extreme-
ly high or extremely low temperature
for a long period.
When driving on bumpy or graveled
roads or on grass
When a device such as a horn from
another vehicle, motorcycle engine, or
an air brake sound from a heavy −duty
vehicle, issues ultrasonic waves, near
your vehicle
When attaching a two −way radio anten-
na
When rain or water splashes on the
sensor.
When operating the vehicle on an in-
clined surface
When a radio antenna or fender pole
is mounted on your vehicle.
When a towing hitch is mounted on
your vehicle.