2007 Mercedes R-Class Owner's Manual - Page 406

Operation Winter driving Winter driving Before the onset of winter, have your vehicle winterized at an authorized Mercedes-Benz Light Truck Center. This service includes: Check of anticorrosion and antifreeze concentration. Addition of cleaning concentrate to the water of the windshield and headlamp cleaning system. Add MB Concentrate "MB SummerFit" to a premixed windshield washer solvent/antifreeze which is formulated for temperatures below freezing point ( page 546). Battery test. Battery capacity drops with decreasing ambient temperature. A well charged battery helps to make sure that the engine can be started even at low ambient temperatures. Tire change. Mercedes-Benz recommends M+S rated radial-ply tires with a minimum tread depth of approximately 1 /6 in (4 mm) on all four wheels for the winter season. Winter tires Warning! Always use winter tires at temperatures below 45°F (7°C) and whenever wintry road conditions prevail. Not all M+S rated radial-ply tires provide special winter performance. Make sure the tires you use show M+S and the mountain/snowflake marking.on the tire sidewall. These tires meet specific snow traction performance requirements of the Rubber Manufacturers Association (RMA) and the Rubber Association of Canada (RAC) and have been designed specifically for use in snow conditions. Use of winter tires is the only way to achieve the maximum effectiveness of the ABS, ESP®, 4-ETS, and EBP in winter operation. For safe handling, make sure all winter tires mounted are of the same make and have the same tread design. G Winter tires with a tread depth under 1/ in (4 mm) must be replaced. They are no 6 longer suitable for winter operation. Always observe the speed rating of the winter tires installed on your vehicle. If the maximum speed for which your tires are rated is below the speed rating of your vehicle, you must place a notice to this effect where it will be seen by the driver. Such notices are available at your tire dealer or any authorized Mercedes-Benz Light Truck Center. 405