2011 Mercedes R-Class Owner's Manual - Page 312

310 Battery i If the power supply has been interrupted, e.g. if the battery has been reconnected, you must carry out the following tasks: Rset the clock (Y page 206) On vehicles with COMAND and a navigation system, the clock is set automatically. Rreset the sliding sunroof (Y page 93) Rreset the panorama roof with power tilt/ sliding panel (Y page 94) Rreset the function for folding the exterior mirrors in/out automatically by folding the mirrors out once (Y page 112) Rreset the side windows (Y page 88) Charging the battery G Warning Never charge a battery while still installed in the vehicle unless the accessory battery charge unit approved by Mercedes-Benz is being used. Gases may escape during charging and cause explosions that may result in paint damage, corrosion or personal injury. An accessory battery charge unit specially adapted for Mercedes-Benz vehicles and tested and approved by Mercedes-Benz is available. It permits the charging of the battery in its installed position. Contact an authorized Mercedes-Benz Center for information and availability. Charge the battery in accordance with the separate instructions for the accessory battery charger. ! Only charge the installed battery with a battery charger which has been tested and approved by Mercedes-Benz. These battery chargers allow the battery to be charged while still installed. ! Only use battery chargers with a maximum charging voltage of 14.8 V. ! Only charge the battery using the jumpstarting connection point. The jump-starting connection point is in the engine compartment (Y page 311). X Open the hood (Y page 278). X Connect the battery charger to the positive terminal and earth point in the same order as when connecting the donor battery in the jump-starting procedure (Y page 311). Roadside Assistance G Warning! There is a risk of acid burns during the charging process due to the gases which escape from the battery. Do not lean over the battery during the charging process. G Warning! Battery acid is caustic. Avoid contact with the skin, eyes or clothing.