Toyota Sienna 2007 Operating Manual page 367

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.
A
When the temperature is extremely low.
A
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.
358
07 SIENNA_U (L/O 0612)
Rear sensors
Rear corner sensors
This system is designed to inform you of
the approximate distance between your
vehicle and an obstacle by indicator and
buzzer.
Rear sensors
Distance shown as A in Indicator and
mm (in.) buzzer
Approximately 1800—900
Intermittent
(70.9—35.4)
Approximately Fast
900—550 (35.4—21.7) intermittent
Approximately
Continuous
550 (21.7) or less
Rear corner sensors
Distance shown as B in Indicator and
mm (in.) buzzer
Approximately
Intermittent
850—520 (33.5—20.5)
Approximately Fast
520—250 (20.5—9.8) intermittent
Approximately
Continuous
250 (9.8) or less
2007 SIENNA from Oct. '06 Prod. (OM45437U)