2011 Mercedes GLK-Class Owner's Manual - Page 149

Driving tips Braking maneuvers triggered automatically by ESP® may seriously damage the brake system. If your brake system is only subjected to moderate loads, you should regularly test your brake system's function by forcefully depressing the brake pedal when driving at high speed. This will give the brake pads better grip. 147 Driving on wet roads Hydroplaning If water has accumulated to a certain depth on the road surface, there is a danger of hydroplaning occurring, even if: Ryou Rthe G Warning Make sure that you do not endanger other road users when you apply the brakes. drive at low speeds tires have adequate tread depth For this reason, in the event of heavy rain or in conditions in which hydroplaning can occur you must drive in the following manner: RLower RAvoid You can find a description of Brake Assist (BAS) on (Y page 62). your speed ruts RBrake carefully Parking brake If you drive on wet roads or dirt-covered surfaces, road salt and/or dirt could get into the parking brake. In order to prevent corrosion and a reduction in the braking power of the parking brake, observe the following: Rgently depress the parking brake from time Rdrive Driving on flooded roads ! Do not drive through flooded areas. Check the depth of any water before driving through it. Drive slowly through standing water. Otherwise, water may enter the vehicle interior or the engine compartment. This can damage the electronic components in the engine or AUTOTRONIC. Water can also be drawn in by the engine's air suction nozzles and this can cause engine damage. Prevent water from entering the vehicle interior or engine compartment. If you have to drive through standing water, please note that: Rthe maximum permissible still water depth is 12 in. (30 cm). Ryou should drive no faster than at walking pace. Winter driving Important safety notes Have your vehicle winterproofed at a qualified specialist workshop, e.g. at an authorized Mercedes-Benz Center, at the onset of winter. Z to time before beginning the journey. approximately 110 yd (100 m) without exceeding a speed of 12 mph (20 km/h). G Warning! While performing this procedure please assure that the vehicle is stopped before applying the parking brake. Otherwise the rear wheels could lock up. You could lose control of the vehicle and cause an accident. In addition, the vehicle's brake lights do not light up when the parking brake is engaged. Make sure not to endanger any other road users when you engage the parking brake. Driving and parking