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:

    Push-button ignition switch positions
    LOCK (Normal parking position): The ignition switch can only be locked in this position. The ignition switch will be unlocked when it is pushed to the ACC position while carrying the Intelligent ...

    Steps to take if EBD system malfunctions
    If a malfunction occurs in the EBD system, the system stops working and the brake system warning light and ABS warning light illuminate simultaneously. The EBD system may be malfunctioning if the ...

    Tire Pressure Monitor System (TPMS)
    The Tire Pressure Monitor System (TPMS) will warn the driver of a low tire pressure based on the vehicle recommended cold placard pressure. The tire pressure will vary with temperature by about ...