2010 Mercedes GL-Class Owner's Manual - Page 344

342 Flat tire Changing wheel on passenger side (example illustration) X Practical hints X Place wheel chocks or other sizeable objects on the downhill side in front of both wheels on the side opposite to the side on which the wheel is to be changed. 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 286). Changing a wheel on a slight incline Always try lifting the vehicle using the jack on a level surface. However, should circumstances require you to do so on a slight incline: The jack take-up brackets are located directly behind the front wheel housings and in front of the rear wheel housings. G Warning! Changing wheel on passenger side (example illustration) X Place wheel chocks or other sizeable objects on the downhill side in front of both wheels on the side opposite to the side on which the wheel is to be changed. 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. ! Do not position the jack on the body of the vehicle, as this may cause damage to the vehicle.