2011 Mercedes GLK-Class Owner's Manual - Page 238

236 X Service Mix the windshield washer fluid in a container beforehand. X At temperatures above freezing: fill the washer fluid reservoir with a mix of water and windshield washer concentrate (e.g. MB SummerFit). X At temperatures below freezing: fill the washer fluid reservoir with a mix of water and MB SummerFit windshield washer concentrate. For information on the mixing ratio, see (Y page 299) or use the premixed windshield washer solution with antifreeze available in specialist stores. X Service Service interval display Service messages Information about the type of service and service intervals (see separate Service Booklet) You can obtain more information at an authorized Mercedes-Benz Center or at www.mbusa.com (USA only). The service interval display informs you of the next service due date. If a service is overdue, you will also hear a warning tone. The multifunction display shows a service message for a few seconds, e.g. Next Service A in .. mls Service A due Service A Exceeded By .. mls The letter indicates which service is due. A stands for a minor service and B for a major service. A number or another letter may be displayed after the letter. This figure indicates any necessary additional maintenance work to be performed. You can obtain further information at an authorized Mercedes-Benz Center. The service interval display does not take into account any periods of time during which the battery is disconnected. Maintaining the time-dependent service schedule: X Maintenance and care To open: pull cap : upwards by the tab. X Add the premixed washer fluid. X To close: press cap : onto the filler neck until it engages. Brake fluid level ! If you discover that the brake fluid level in the brake fluid reservoir has fallen to the MIN mark or below, check the brake system for leaks immediately. Also check the brake lining thickness. Contact a qualified specialist workshop, e.g. an authorized Mercedes-Benz Center immediately. Do not top up the brake fluid. This will not rectify the malfunction. Only check the brake fluid level when the vehicle is stationary and on a level surface. Before disconnecting the battery, call up the service due date in the multifunction display and note it down. Subtract the battery disconnection periods from the service date shown on the display after reconnecting the battery. or X The brake fluid level is correct if it is between MIN marking ; and MAX marking : on the brake fluid reservoir.