2007 Buick Lucerne Owner's Manual - Page 227

SERVICE BRAKE ASSIST This message displays if there is a problem with the brake system. The brake system warning light and the anti-lock brake system warning light may also be displayed on the instrument panel cluster. See Brake System Warning Light on page 201 and Anti-Lock Brake System Warning Light on page 202 for more information. If this happens, stop as soon as possible and turn off the vehicle. Restart the vehicle and check for the message on the DIC display. If the message is displayed or appears again when you begin driving, the brake system needs service. See your dealer as soon as possible. See Brakes on page 367 for more information. SERVICE PARK ASSIST If your vehicle has this feature, this message displays if there is a problem with the Ultrasonic Rear Parking Assist (URPA) system. Do not use this system to help you park. See Ultrasonic Rear Parking Assist (URPA) on page 178 for more information. See your dealer for service. SERVICE POWER STEERING Your vehicle may have a speed variable assist steering system. See Steering on page 285. This message displays if a problem is detected with the speed variable assist steering system. When this message is displayed, you may notice that the effort required to steer the vehicle decreases or feels lighter, but you will still be able to steer the vehicle. SERVICE BRAKE SYSTEM This message displays if the ignition is on to inform the driver that the brake fluid level is low. Have the brake system serviced by your dealer as soon as possible. The brake system warning light also appears on the instrument panel cluster when this message appears on the DIC. See Brake System Warning Light on page 201. 227