2009 Buick Lucerne Owner's Manual - Page 260

Adding non-dealer/non-retailer accessories can affect the vehicle's performance. See Accessories and Modifications on page 5-3 for more information. Steering Tips It is important to take curves at a reasonable speed. Traction in a curve depends on the condition of the tires and the road surface, the angle at which the curve is banked, and vehicle speed. While in a curve, speed is the one factor that can be controlled. If there is a need to reduce speed, do it before entering the curve, while the front wheels are straight. Try to adjust the speed so you can drive through the curve. Maintain a reasonable, steady speed. Wait to accelerate until out of the curve, and then accelerate gently into the straightaway. Magnetic Ride Control™ The vehicle may have Magnetic Ride Control that automatically adjusts the ride of the vehicle. The controller receives input from the system to determine the proper ride. If the controller detects a problem within the system, the Driver Information Center (DIC) displays a SERVICE SUSPENSION SYS message. See DIC Warnings and Messages on page 3-60 for more information. If this message appears, have the vehicle serviced at your dealer/retailer. Steering in Emergencies Steering Power Steering If power steering assist is lost because the engine stops or the system is not functioning, the vehicle can be steered but it will take more effort. There are times when steering can be more effective than braking. For example, you come over a hill and find a truck stopped in your lane, or a car suddenly pulls out from nowhere, or a child darts out from between parked cars and stops right in front of you. These problems can be avoided by braking - if you can stop in time. But sometimes you cannot stop in time because there is no room. That is the time for evasive action - steering around the problem. The vehicle can perform very well in emergencies like these. First apply the brakes. See Braking on page 4-4. 4-8