2010 Mercedes C-Class Owner's Manual - Page 323

Battery Lowering the vehicle X 321 Battery Safety notes A battery should always be sufficiently charged in order to achieve its rated service life. Refer to Maintenance Booklet for battery maintenance intervals. If you use your vehicle mostly for shortdistance trips, you will need to have the battery charge checked more frequently. When replacing a battery, always use a battery approved by Mercedes-Benz. If you do not intend to operate your vehicle for an extended period of time, contact an authorized Mercedes-Benz Center about steps you need to observe. Lower the vehicle by turning the crank counterclockwise until the vehicle is resting fully on its own weight. X Remove the jack. X Tighten the five wheel bolts evenly, following the diagonal sequence illustrated (: to A), until all bolts are tight. Observe a tightening torque of 96 lb-ft (130 Nm). G Warning! G Warning! Observe all safety instructions and precautions when handling automotive batteries. Risk of explosion. Have the tightening torque checked after changing a wheel. The wheels could come loose if they are not tightened to a torque of 96 lb-ft (130 Nm). X Fully collapse the jack, with handle folded in (storage position), see (Y page 269). X Store the jack and the other vehicle tools in the designated storage space. For information on storing the spare wheel after it has been replaced by a regular road wheel, see (Y page 270). i Vehicles with TPMS: Do not restart the tire inflation pressure monitor until a full size wheel/tire with functioning sensor has been placed back into service on the vehicle. Fire, open flames and smoking are prohibited when handling batteries. Avoid creating sparks. Battery acid is caustic. Do not allow it to come into contact with skin, eyes or clothing. Wear suitable protective clothing, especially gloves, apron and faceguard. Wear eye protection. Rinse any acid spills immediately with clear water. Contact a physician if necessary. Z Practical hints