Chevrolet 2012 Volt Owner's Manual page 266

9-40 Driving and Operating
However, if an object comes within
0.3 m (1 ft) of the front bumper while
the vehicle is backing up 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 Center (DIC). The
message disappears after a short
period of time.
UFRPA defaults to the on setting
each time the vehicle is started.
When the System Does Not
Seem to Work Properly
The following messages may be
displayed on the DIC:
SERVICE PARKING ASSIST: If
this message occurs, take the
vehicle to your dealer to repair the
system.
PARK ASSIST OFF: If the UFRPA
system does not activate due to a
temporary condition, the message
displays on the DIC. This can occur
under the following conditions:
The driver has disabled the
system.
The ultrasonic sensors are not
clean. Keep the vehicle's
bumpers free of mud, dirt, snow,
I n f o r ma t i o n P r o v i d e d b y :
ice, and slush. For cleaning
instructions, see Exterior Care
on page 10 78.
The park assist sensors are
covered by frost or ice. Frost or
ice can form around and behind
the sensors and may not always
be seen; this can occur after
washing the vehicle in cold
weather. The message may not
clear until the frost or ice has
melted.
An object was hanging out of the
hatch during the last drive cycle.
Once the object is removed,
UFRPA will return to normal
operation.
An object or cover is attached to
the front of the vehicle.
The bumper is damaged. Take
the vehicle to your dealer to
repair the system.