2015 Buick Regal Owner Manual - Page 188

Driving and Operating Warning (Continued) After driving through a large puddle of water or a car/vehicle wash, lightly apply the brake pedal until the brakes work normally. Flowing or rushing water creates strong forces. Driving through flowing water could cause the vehicle to be carried away. If this happens, you and other vehicle occupants could drown. Do not ignore police warnings and be very cautious about trying to drive through flowing water. There is no hard and fast rule about hydroplaning. The best advice is to slow down when the road is wet. . 9-7 Check all fluid levels and brakes, tires, cooling system, and transmission. Shift to a lower gear when going down steep or long hills. Other Rainy Weather Tips Besides slowing down, other wet weather driving tips include: ... . Allow extra following distance. Pass with caution. Keep windshield wiping equipment in good shape. Keep the windshield washer fluid reservoir filled. Have good tires with proper tread depth. See Tires on page 10-40. Turn off cruise control. { Warning Using the brakes to slow the vehicle on a long downhill slope can cause brake overheating, can reduce brake performance, and could result in a loss of braking. Shift the transmission to a lower gear to let the engine assist the brakes on a steep downhill slope. . . Hydroplaning Hydroplaning is dangerous. Water can build up under the vehicle's tires so they actually ride on the water. This can happen if the road is wet enough and you are going fast enough. When the vehicle is hydroplaning, it has little or no contact with the road. . { Warning Coasting downhill in N (Neutral) or with the ignition off is dangerous. This can cause overheating of the brakes and (Continued) Hill and Mountain Roads Driving on steep hills or through mountains is different than driving on flat or rolling terrain. Tips for driving in these conditions include: . Keep the vehicle serviced and in good shape.