Jump Starting - Jeep GRAND CHEROKEE WK 2022 Owner's Manual

240 IN CASE OF EMERGENCY
10. 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. For correct lug nut torque Ú page 305.
If in doubt about the correct tightness, have
them checked with a torque wrench by an
authorized dealer or at a service station.
Tighten Lug Nuts
11. After 25 miles (40 km), check the lug nut
torque with a torque wrench to ensure that all
lug nuts are properly seated against the wheel.
12. Lower the jack to the fully closed position and
return it and the tools to the proper positions
in the foam tray.
13. Remove the small center cap and securely
store the road wheel in the cargo area. Turn
the fastener clockwise until secured.
Installing Fastener
14. Have the aluminum road wheel and tire
repaired as soon as possible, properly secure
the spare tire with the special wing nut torqued
to 3.7 ft-lbs (5 N·m), reinstall the jack and tool
kit foam tray, and latch the rear load floor
cover.
NOTE:
Do not drive with the spare tire installed for more
than 50 miles (80 km) at a max speed of 50 mph
(80 km/h).
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.

JUMP STARTING

If your vehicle has a discharged battery, it can be
jump started 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.
WARNING!
Do not attempt jump starting if the battery is
frozen. It could rupture or explode and cause
personal injury.
CAUTION!
Do not use a portable battery booster pack or
any other booster source with a system voltage
greater than 12 Volts or damage to the battery,
starter motor, alternator or electrical system may
occur.
NOTE:
When using a portable battery booster pack, follow
the manufacturer's operating instructions and
precautions.