2004 JEEP GRAND CHEROKEE lock

ANTI-LOCK BRAKE SYSTEM
The Anti-Lock Brake System (ABS) is designed to aid the
driver in maintaining vehicle control under adverse
braking conditions. The system operates with a separate
computer to modulate hydraulic pressure to prevent
wheel lock-up and help avoid skidding on slippery
surfaces.
All vehicle wheels and tires must be the same size and
type and tires must be properly inflated to produce
accurate signals for the computer.
WARNING!
Significant over or under inflation of tires, or mixing
sizes of tires or wheels on the vehicle can lead to loss
of braking effectiveness.
The Anti-Lock Brake System conducts a low-speed self-
test at about 12 mph (20 km/h). If you have your foot
lightly on the brake while this test is occurring you may
feel slight pedal movement. The movement can be more
apparent on ice and snow. This is normal.
The Anti-Lock Brake System pump motor runs during
the self-test at 12 mph (20 km/h) and during an ABS stop.
The pump motor makes a low humming noise during
operation, which is normal.
WARNING!
Pumping of the Anti-Lock Brakes will diminish
their effectiveness and may lead to an accident.
Pumping makes the stopping distance longer. Just
press firmly on your brake pedal when you need to
slow down or stop.
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WARNING!
²Anti-lock system (ABS) cannot prevent the natu-
ral laws of physics from acting on the vehicle, nor
can it increase braking or steering efficiency be-
yond that afforded by the condition of the vehicle
brakes and tires or the traction afforded.
²The ABS cannot prevent accidents, including
those resulting from excessive speed in turns,
following another vehicle too closely, or hydro-
planing. Only a safe, attentive, and skillful driver
can prevent accidents.
²The capabilities of an ABS equipped vehicle must
never be exploited in a reckless or dangerous
manner which could jeopardize the user's safety
or the safety of others.
CAUTION!
The Anti-Lock Brake System is subject to possible
detrimental effects of electronic interference caused
by improperly installed after-market radios or tele-
phones.
NOTE:During severe braking conditions, a pulsing
sensation may occur and a clicking noise will be heard.
This is normal, indicating that the Anti-Lock Brake
System is functioning.
WARNING!
To use your brakes and accelerator more safely,
follow these tips:
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²Do not ªrideº the brakes by resting your foot on the
pedal. This could overheat the brakes and result in
unpredictable braking action, longer stopping dis-
tances, or brake damage.
²When descending mountains or hills, repeated brak-
ing can cause brake fade with loss of braking control.
Avoid repeated heavy braking by downshifting the
transmission or locking out overdrive whenever pos-
sible.
²Engines may idle at higher speeds during warm-up,
which could cause rear wheels to spin and result in
loss of vehicle control. Be especially careful while
driving on slippery roads, in close-quarter maneuver-
ing, parking or stopping. Remember, always engage
4-wheel drive when driving on slippery roads (Selec-
Trac only). The Quadra-Trac II transfer case engages
four-wheel drive automatically when required.
²Do not drive too fast for road conditions, especially
when roads are wet or slushy. A wedge of water can
build up between the tire tread and the road. This
hydroplaning action can cause loss of traction, braking
ability, and control. Under such conditions, engage
4-wheel drive (Selec-Trac only).
²After going through deep water or a car wash, brakes
may become wet, resulting in decreased performance
and unpredictable braking action. Dry the brakes by
gentle, intermittent pedal action while driving at very
slow speeds.
ON-ROAD DRIVING TIPS
Utility vehicles have higher ground clearance and a
narrower track to make them capable of performing in a
wide variety of off-road applications. Specific design
characteristics give them a higher center of gravity than
ordinary cars.
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to help regulate your speed. If the brakes are required to
control vehicle speed, apply them lightly and avoid
locking or skidding the tires.
WARNING!
If the engine stalls or you lose headway or cannot
make it to the top of a steep hill or grade, never
attempt to turn around. To do so may result in
tipping and rolling the vehicle. Always back care-
fully straight down a hill in R (Reverse) gear. Never
back down a hill in N (Neutral) using only the brake.
Remember, never drive diagonally across a hill-always
drive straight up or down.
If the wheels start to slip as you approach the crest of a
hill, ease off the accelerator and maintain headway byturning the front wheels sharply left and right. This will
provide fresh ªbiteº into the surface and will usually
provide traction to complete the climb.
Traction Downhill
Shift the transmission into a low gear and the transfer
case to 4 LO range. Let the vehicle go slowly down the
hill with all four wheels turning against engine compres-
sion drag. This will permit you to control the vehicle
speed and direction.
When descending mountains or hills, repeated braking
can cause brake fade with loss of braking control. Avoid
repeated heavy braking by downshifting the transmis-
sion whenever possible.
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Shifting Into Neutral (N)
Use the following procedure to prepare your vehicle for
recreational towing.
CAUTION!
It is necessary to follow these steps to be certain that
the transfer case is fully in N (Neutral) before
recreational towing to prevent damage to internal
parts.
1. Depress brake pedal.
2. Shift transmission into N (Neutral).
3. Shift transfer case lever into N (Neutral).4. Start engine.
5. Shift transmission into D (Drive).
6. Release brake pedal and ensure that there is no vehicle
movement.
7. Shut the engine OFF and place the ignition key into
the unlocked OFF position.
8. Shift transmission into P (Park).
9. Apply parking brake.
10. Attach vehicle to the tow vehicle with tow bar.
11. Release parking brake.
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CHANGING A FLAT TIRE
Jack And Lug Wrench Locations
The three piece tool set, consisting of two snap-together
extensions that operate the jack and a wheel wrench that
also is used as a crank for the jack, is stored under the
right rear seat. The scissor-type jack is located under the
left rear seat.To remove the jack from its stowage position, turn the
wing nut counterclockwise to loosen the jack assembly,
and then remove it.
238 WHAT TO DO IN EMERGENCIES

seatback or completely removed from the vehicle. It can
also be kneeled down upon and used as ground cover
to prevent clothing from getting soiled.
3. Remove the nut and tire.To Replace the Spare Tire
1. Place the tire into the rear compartment with the
wheel facing upward:
a. Replace the hold-down nut.
b. Reinstall the cover by inserting the hinges through
the carpet into the brackets at about a 30 degree angle
and lower into position. Press down to lock the cover
in position.
2. Your vehicle is equipped with either a temporary-use
spare tire or a conventional spare tire. Maintain the
temporary-use spare tire pressure at 60 psi (420 kPa), and
the conventional spare at 33 psi (228 kPa).
240 WHAT TO DO IN EMERGENCIES

Tire Changing Procedure
Preparation
WARNING!
You can be injured or killed if you try to change a
wheel too close to moving traffic. Pull far enough off
the road to avoid being hit when operating the jack
or changing the wheel.
²Park on a firm, level surface well off the road to
provide ample work space. Put the transmission in P
(Park) and stop the engine. Set the parking brake
firmly and activate the hazard warning flasher.
Avoid jacking up the vehicle with occupants inside. If
the jack should fall, someone in the vehicle could be
hurt.
²Block the front and rear of the
diagonally opposite tire. For
example, if the right front tire
is being changed, block the
left rear wheel.
Instructions
1. Remove the spare tire from under the cargo floor, jack
and jack tools from under the left and right rear seat.
2. Loosen the lug nuts one-half turn counterclockwise.
3. Assemble the jack and jacking tools as shown. Connect
jack handle driver (A) to extension (B), then to the lug
wrench (C).
242 WHAT TO DO IN EMERGENCIES