2009 Mercedes SLK-Class Owner's Manual - Page 330

Practical hints Battery Lowering the vehicle G Warning! Inflate collapsible tire only after the wheel is properly attached. Inflate the collapsible tire using the electric air pump before lowering the vehicle. X G Warning! Have the tightening torque checked after changing a wheel. The wheels could come loose if they are not tightened to a torque of 80 lb-ft (110 Nm). X X X 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 short-distance 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 crank counterclockwise until the vehicle is resting fully on its own weight. Remove the jack. Fully collapse the jack, with handle folded in (storage position), see (Y page 268). Store the jack and the other vehicle tools in the designated storage space. Wrap the damaged wheel in the protective wrap provided with the vehicle tool kit and put the wheel in the trunk. The retractable hardtop must be closed. X For information on storing the spare wheel in the trunk after it has been replaced by a regular road wheel, see (Y page 270). G Warning! Observe all safety instructions and precautions when handling automotive batteries. Risk of explosion. 1 - 5 Wheel bolts X Tighten the five wheel bolts evenly, following the diagonal sequence illustrated (1 to 5), until all bolts are tight. Observe a tightening torque of 80 lb-ft (110 Nm). Fire, open flames and smoking are prohibited when handling batteries. Avoid creating sparks. 328