Buick 2011 Regal - Manual (Page 228)

9-40 Driving and Operating
When the System Does Not
Seem to Work Properly
SERVICE PARK ASSIST: If this
message occurs, take the vehicle to
your dealer to repair the system.
PARK ASSIST OFF: If the URPA
system does not activate due to a
temporary condition, the message
displays on the DIC. See Driver
Information Center (DIC) on
page 5‑21 for more information.
This can occur under the following
conditions:
. The driver has disabled 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 Exterior Care
on page 10‑74.
. An object was hanging out of the
trunk during the last drive cycle.
Once the object is removed and
URPA detects no objects of
interest, the URPA will return to
normal operation.
. The vehicle's bumper is
damaged. Take the vehicle to
your dealer to repair the system.
. Other conditions, such as
vibrations from a jackhammer or
the compression of air brakes on
a very large truck, are affecting
system performance.
If the system is still disabled after
driving forward at least 40 km/h
(25 mph), take the vehicle to your
dealer.
Fuel
Use of the recommended fuel is an
important part of the proper
maintenance of this vehicle. To help
keep the engine clean and maintain
optimum vehicle performance, we
recommend the use of gasoline
advertised as TOP TIER Detergent
Gasoline.
Look for the TOP TIER label on the
fuel pump to ensure gasoline meets
enhanced detergency standards
developed by auto companies. A list
of marketers providing TOP TIER
Detergent Gasoline can be found at
www.toptiergas.com.