Toyota Prius 2007 Pocket Reference Manual page 57

Warning and its meaning
Inside warning alarm
One beep
(sounds continuously)
One beep
(sounds continuously)
Beeps
(sound intermittently)
One beep
—
One beep
—
One beep
One beep
—
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Outside warning alarm Warning light
— —
One beep
On
(sounds continuously)
— —
3 beeps On
One beep
On
(sounds for 2 seconds)
3 beeps On
One beep
—
(sounds for 2 seconds)
— —
On
—
(for 5 seconds)
One beep
—
(sounds for 10 seconds)
Umar: 03214530584
Causes
The driver's door was opened when the hybrid system was in "ACC"
or "IG!ON" and when the transaxle was in a position other than "P".
The driver brought out the smart key from the vehicle with the hybrid
system not to be turned off and with the transaxle in a position other
than "P".
The driver's door was opened when the hybrid system was in "ACC"
and when the transaxle was in "P".
The driver brought out the smart key from the vehicle with the hybrid
system not to be turned off and with the transaxle in "P".
The lock switch was pressed with the hybrid system not to be turned
off and with the transaxle in "P".
The passenger brought out the smart key from the vehicle with the
hybrid system not to be turned off.
The lock switch was pressed when the hybrid system was off but with
the smart key left in the vehicle.
The key battery voltage become about 2 V. (3 V for normal operation)
The "POWER" switch was pressed when the smart key was not in the
effective range of the system.
The lock switch was pressed when the hybrid system was off but any
door was opened.
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