2008 Mercedes SL-Class Owner's Manual - Page 423

Practical hints Flat tire Warning! G Warning! G Always replace wheel bolts that are damaged or rusted. Never apply oil or grease to wheel bolts. Damaged wheel hub threads should be repaired immediately. Do not continue to drive under these circumstances! Contact an authorized Mercedes-Benz Center or call Roadside Assistance. Incorrect wheel bolts or improperly tightened wheel bolts can cause the wheel to come off. This could cause an accident. Be sure to use the correct wheel bolts. Only use genuine Mercedes-Benz wheel bolts. They are identified by the Mercedes star. Other wheel bolts may come loose. Do not tighten the wheel bolts when the vehicle is raised. Otherwise the vehicle could fall off the jack. Unscrew the alignment bolt, install last wheel bolt and tighten slightly. Inflating the spare tire (collapsible tire) ! Do not lower the vehicle before inflating the spare wheel tire. Otherwise the rim may be damaged. Take the electric air pump out of the trunk ( page 400). Warning! 1 Flap 2 Air pump switch 3 Electrical plug 4 Air hose with pressure gauge and vent screw 5 Union nut Open flap 1 on air pump. Pull out electrical plug 3 and air hose with the pressure gauge 4. Remove the valve cap from the tire valve. Screw union nut 5 onto the tire valve. G Observe instructions on air pump label. 422