Buick LaCrosse: When the System Does Not 
Seem to Work Properly - Ultrasonic Parking Assist - Object Detection Systems - Driving and Operating - Buick LaCrosse Owners ManualBuick LaCrosse: When the System Does Not Seem to Work Properly

The following messages may 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: If the URPA system does not activate due to a temporary condition, this 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 rear bumper free of mud, dirt, snow, ice, and slush. For cleaning instructions, see Exterior Care.

• 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 trunk during the last drive cycle.

Once the object is removed, URPA will return to normal operation.

• The 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.

    Turning the System On and Off
    The URPA system can be turned on and off using the park assist button located next to the shift lever. The LED next to the park assist button lights up when the system is on and turns off w ...

    Side Blind Zone Alert (SBZA)
    The vehicle may have a Side Blind Zone Alert (SBZA) system. Read this entire section before using the system. WARNING! SBZA does not detect vehicles rapidly approaching outside of the side ...

    See also:

    Folding down the rear seat backrests
    The rear seat backrests can be folded down for additional loading space, see page 92. ...

    Passenger Compartment Air Filter
    The filter removes dust, pollen, and other airborne irritants from outside air that is pulled into the vehicle. The filter should be replaced as part of routine scheduled maintenance. See Main ...

    Vehicle identification plate
    Vehicle identification plateVehicle identification number AGross vehicle weight BGross train weight CMaximum front axle weight DMaximum rear axle weight E The vehicle identification number andmaximum ...