lug pattern JEEP GRAND CHEROKEE 2012 Owner handbook (in English)

•Each time the ignition is turned ON, the
ESC system will be ON even if it was
turned off previously.
• The ESC system will make buzzing or
clicking sounds when it is active. This is
normal; the sounds will stop when ESC
becomes inactive following the maneuver
that caused the ESC activation.
The “ESC OFF Indicator Light” in-
dicates the Electronic Stability
Control (ESC) is off.
TIRES — GENERAL INFORMATION
Tire Pressure
Proper tire inflation pressure is essential to the
safe and satisfactory operation of your vehicle.
Three primary areas are affected by improper
tire pressure: Safety
WARNING!
•
Improperly inflated tires are dangerous and
can cause accidents.
• Under-inflation increases tire flexing and
can result in tire failure.
• Over-inflation reduces a tire’s ability to
cushion shock. Objects on the road and
chuck holes can cause damage that results
in tire failure.
• Unequal tire pressures can cause steering
problems. You could lose control of your
vehicle.
• Over-inflated or under-inflated tires can af-
fect vehicle handling and can fail suddenly,
resulting in loss of vehicle control.
Always drive with each tire inflated to the
recommended pressure. Economy
Improper inflation pressures can cause uneven
wear patterns to develop across the tire tread.
These abnormal wear patterns will reduce
tread life resulting in a need for earlier tire
replacement. Under-inflation also increases tire
rolling resistance and results in higher fuel
consumption.
Ride Comfort and Vehicle Stability
Proper tire inflation contributes to a comfortable
ride. Over-inflation produces a jarring and un-
comfortable ride. Both under-inflation and over-
inflation affect the stability of the vehicle and
can produce a feeling of sluggish response or
over responsiveness in the steering.
Unequal tire pressures can cause erratic and
unpredictable steering response.
Unequal tire pressure from side to side may
cause the vehicle to drift left or right.
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6. Raise the vehicle by turning the jack screw
clockwise. Raise the vehicle only until the tire
just clears the surface and enough clearance is
obtained to install the spare tire. Minimum tire
lift provides maximum stability.
WARNING!
Raising the vehicle higher than necessary can
make the vehicle less stable. It could slip off
the jack and hurt someone near it. Raise the
vehicle only enough to remove the tire.
7. Remove the lug nuts and wheel. 8. Position the spare wheel/tire on the vehicle
and install the lug nuts with the cone-shaped
end toward the wheel. Lightly tighten the nuts.
CAUTION!
Be sure to mount the spare tire with the valve
stem facing outward. The vehicle could be
damaged if the spare tire is mounted incor-
rectly.
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.
9. Lower the vehicle by turning the jack screw
counterclockwise, and remove the jack and
wheel blocks.
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. The correct wheel nut tightness 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 at a ser-
vice station.
11. Lower the jack to the fully closed position
and return it and the tools to the proper posi-
tions in the foam tray.
12. Remove the small center cap and securely
store the road wheel in the cargo area.
Rear Jacking Location
Mounting Spare Tire
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13. 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.
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 re-
placed immediately.
Road Tire Installation
1. Mount the road tire on the axle.
2. Install the remaining lug nuts with the cone
shaped end of the nut toward the wheel. Lightly
tighten the lug nuts.
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.
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 torque wrench to ensure that all
lug nuts are properly seated against the wheel.
JUMP-STARTINGIf 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.
NOTE:
When using a portable battery booster pack
follow the manufacturer’s operating instruc-
tions and precautions.
CAUTION!
Do not use a portable battery booster pack or
any other booster source with a system volt-
age greater than 12 Volts or damage to the
battery, starter motor, alternator or electrical
system may occur.
Stowed Spare
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