Cadillac 2011 Escalade Owner's Manual page 378

The system can be disabled by
pressing the rear park aid disable
button located next to the radio.
The indicator light will come on and
PARK ASSIST OFF displays on the
Driver Information Center (DIC) to
indicate that URPA is off, see Object
Detection System Messages on
page 5 36.
When the System Does Not
Seem to Work Properly
If the URPA system will not activate
due to a temporary condition, the
messages PARK ASSIST OFF
or PARK ASST BLOCKED SEE
OWNERS MANUAL will be
displayed on the DIC.
SERVICE PARK ASSIST: If this
message occurs, take the vehicle
to your dealer to repair the system.
PARK ASSIST OFF: This message
occurs if the driver disables the
system.
PARK ASST BLOCKED SEE
OWNERS MANUAL: This
message can occur under the
following conditions:
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 the
Vehicle under Exterior Care on
page 10 97.
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.
Driving and Operating
A trailer was attached to the
vehicle, or a bicycle or an object
was hanging out of the liftgate
during the last drive cycle. Once
the attached 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 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 40 km/h
(25 mph), take the vehicle to your
dealer.
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