2012 Jeep Grand Cherokee Owner Manual SRT - Page 507

WHAT TO DO IN EMERGENCIES 505 WARNING! A loose tire or jack, thrown forward in a collision or hard stop could endanger the occupants of the vehicle. Always stow the jack parts and the spare tire in the places provided. Have the deflated (flat) tire repaired or replaced immediately. Road Tire Installation 1. Mount the road tire on the axle. 3. Lower the vehicle to the ground by turning the jack handle counterclockwise. 4. Finish tightening the lug nuts. Push down on the wrench while at the end of the handle for increased leverage. Tighten the lug nuts in a star pattern until each nut has been tightened twice. The correct tightness of each lug nut is 110 ft/lbs (150 N·m). If in doubt about the correct tightness, have them checked with a torque wrench by your authorized dealer or service station. 5. After 25 miles (40 km) check the lug nut torque with a 2. Install the remaining lug nuts with the cone shaped end torque wrench to ensure that all lug nuts are properly of the nut toward the wheel. Lightly tighten the lug nuts. seated against the wheel. 6 WARNING! To avoid the risk of forcing the vehicle off the jack, do not tighten the wheel nuts fully until the vehicle has been lowered. Failure to follow this warning may result in personal injury. JUMP-STARTING If your vehicle has a discharged battery it can be jumpstarted using a set of jumper cables and a battery in another vehicle or by using a portable battery booster pack. Jump-starting can be dangerous if done improperly so please follow the procedures in this section carefully.