Toyota PRIUS Manual page 578

5-2. Steps to take in an emergency
*
1
: Rear passenger's seat belt buzzer:
The rear seat belts reminder sounds to alert the rear passenger that his/her
seat belt is not fastened. The buzzer sounds for 30 seconds after the vehi-
cle has reached a speed of at least 20 km/h (12 mph). Then, if the seat belt
is still unfastened, the buzzer will sound in a different tone for 90 more sec-
onds.
*
2
: For EV mode operating conditions, see P. 57.
*
3
: If EV mode has been canceled because of insufficient hybrid battery (trac-
tion battery) charge, a warning message will not be shown on the multi-
information display and the buzzer will not sound.
*
4
: For EV City mode operating conditions, see P. 58.
 Warning message in radar cruise mode (if equipped)
In the following cases, the warning message may not be displayed even if
vehicle-to-vehicle distance decreases:
 When your vehicle and the vehicle ahead are traveling at the same
speed or the vehicle ahead is traveling more quickly than your vehicle.
 When the vehicle ahead is traveling at very low speed.
 Immediately after cruise control speed is set.
At the instant the accelerator pedal is depressed.

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