Buick 2009 Enclave - Manual (Page 100)

The following describes how the URPA display lights appear as the vehicle
gets closer to a detected object:
Description English Metric
amber light 8 ft 2.5 m
amber/amber lights 40 in 1.0 m
amber/amber/red lights 23 in 0.6 m
amber/amber/red lights flashing 1 ft 0.3 m
The system can be disabled through
the Driver Information Center
(DIC). See “Park Assist” under DIC
Operation and Displays on
page 3-43 for more information.
When the System Does
Not Seem to Work Properly
If the URPA system does not
activate due to a temporary
condition, the message PARK
ASSIST OFF displays on the DIC
and a red light will be shown on the
rear URPA display when the shift
lever is moved into R (Reverse).
This may occur under the following
conditions:
• The driver disables the system.
• The ultrasonic sensors are
not clean. Keep the vehicle’s rear
bumper free of mud, dirt, snow,
ice and slush. For cleaning
instructions, see Washing Your
Vehicle on page 5-83.
• A trailer was attached to the
vehicle, or a bicycle or an object
was hanging out of the liftgate
during the last drive cycle, the red
light may illuminate in the rear
display. Once theattached object
is removed, URPA will return to
normal operation.
• A tow bar is attached to the
vehicle.
• The vehicle’s bumper is
damaged. Take the vehicle to
your dealer/retailer to repair the
system.
• Other conditions may affect
system performance, such as
vibrations from a jackhammer or
the compression of air brakes on
a very large truck.
If the system is still disabled, after
driving forward at least 15 mph
(25 km/h), take the vehicle to your
dealer/retailer.
2-36 Features and Controls