Chevrolet 2013 VOLT Owner's Manual page 186

9-32 Driving and Operating
UFRPA operates only at speeds
less than 8 km/h (5 mph).
When the vehicle is in N (Neutral),
the system may be active. If the
vehicle is in a car wash, the sensors
may detect objects in the car wash.
See Turning the System On and
Off later in this section to turn the
system off.
High-toned beeps from the front
speakers are for objects detected
near the front bumper. Low-toned
beeps from the rear speakers are
for objects detected near the rear
bumper. The interval between the
beeps becomes shorter as the
vehicle gets closer to the obstacle.
When the distance is less than
30 cm (12 in) the beeping is a
continuous tone for five seconds.
To be detected, objects must be at
least 25 cm (10 in) off the ground
and below tailgate level. Objects
must also be within 1.2 m (4 ft) in
front of the vehicle and 2.5 m (8 ft)
from the rear bumper. This distance
may be less during warmer or humid
weather.
Objects Detected by Both the
Front and Rear Sensors
In general, if objects are detected at
the same time near both the front
and rear bumpers while reversing,
the beeps only sound to indicate
that objects are close to the rear
bumper.
However, if an object comes within
0.3 m (1 ft) of the front bumper while
the vehicle is reversing and at the
same time there is another object
further than 0.3 m (1 ft) from the
rear bumper, then the beeps only
sound to indicate the object that is
closer to the front bumper.
Turning the System On and Off
The UFRPA system can be turned
on and off by pressing the park
assist button located in the
overhead console.
The LED next to the park assist
button lights up when the system is
on and turns off when it has been
disabled.
When the system is off, PARK
ASSIST OFF displays on the Driver
Information Centre (DIC). The
message disappears after a short
period of time.
UFRPA defaults to the on setting
each time the vehicle is started.