2010 Mercedes GLK-Class Owner's Manual - Page 316

314 Flat tire X Attach reversible ratchet ? to jack = in such a way that the word UP can be seen. X Place jack = on firm ground. X Position jack = under take-up bracket ; so that it is always vertical as seen from the side, even if the vehicle is parked on an incline. X Practical hints On the wheel to be changed, loosen but do not yet remove the wheel bolts (approximately one full turn with wheel wrench :). X Assemble the jack (Y page 261). The jack take-up brackets are located directly behind the front wheel housings and in front of the rear wheel housings. G Warning! X The jack is designed exclusively for jacking up the vehicle at the jack take-up brackets. Make sure the jack arm is fully seated in the jack take-up bracket. If you do not position the jack correctly in the jack take-up bracket, the vehicle can fall off the jack and seriously or fatally injure you or others. Turn ratchet ? up and down until jack = is fully seated in take-up bracket ; and the jack base evenly meets the ground. X Jack up the vehicle until the wheel is a maximum of 1.2 in (3 cm) from the ground. Removing the wheel X Unscrew and remove the wheel bolts. ! Do not position the jack on the body of the vehicle, as this may cause damage to the vehicle. ! Do not place wheel bolts in sand or dirt. This could result in damage to the wheel bolts and wheel hub threads. X Remove the wheel. Attaching the spare wheel 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. G Warning! Always replace wheel bolts that are damaged or rusted.