2011 Mercedes GL-Class Owner's Manual - Page 321

Flat tire Removing a wheel 319 X Position jack = at jacking point ;. X ! Do not place wheel bolts in sand or on a dirty surface. The bolt and wheel hub threads could otherwise be damaged when you screw them in. X X Make sure that the base of the jack is positioned directly under the jacking point. X Remove the wheel. Turn ratchet ring spanner ? until jack = sits completely on jacking point ; and the base of the jack lies evenly on the ground. X Turn ratchet ring spanner ? until the tire is raised a maximum of 1.2 inches (3 cm) off the ground. Mounting a new wheel G Warning! 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. Make sure to use the correct wheel bolts. G Warning Only use genuine Mercedes-Benz wheel bolts. Other wheel bolts may come loose. Z Roadside assistance Unscrew the uppermost wheel bolt completely. X Screw alignment bolt : into the thread instead of the wheel bolt. X Unscrew the remaining wheel bolts fully.