2004 JEEP GRAND CHEROKEE spare wheel

Defrosters
Check operation by selecting the defrost mode and place
the blower control on high speed. You should feel the air
directed against the windshield.
Safety Checks You Should Make Outside The
Vehicle
Tires
Examine tires for excessive tread wear or uneven wear
patterns. Check for stones, nails, glass, or other objects
lodged in the tread. Inspect for tread cuts or sidewall
cracks. Check wheel nuts for tightness and tires (includ-
ing spare) for proper pressure.
Lights
Have someone observe the operation of all exterior lights
while you work the controls. Check turn signal and high
beam indicator lights on the instrument panel.
Fluid Leaks
Check area under vehicle after overnight parking for fuel,
coolant, oil or other fluid leaks. Also, if gasoline fumes
are detected, the cause should be located and corrected
immediately.
THINGS TO KNOW BEFORE STARTING YOUR VEHICLE 53
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1. If any tire pressure has exceeded the low or high
pressure (refer to STARTING AND OPERATING Ð
TIRES AND WHEELS), the TPM system will display a
message in the EVIC and sound a chime. It will then go
into the tire pressure display screen and flash the pres-
sure value of the tire that is low or high. This will be
displayed for the rest of the ignition cycle, or until either
the C/T, MENU, STEP, or RESET button is pressed.
NOTE:This display will return 60 seconds after either
the C/T, MENU, STEP, or RESET button is pressed. If a
tire is low or high, you should correct your tire inflation
pressure as soon as possible and inspect all of your tires.
Refer to STARTING AND OPERATING Ð TIRES AND
WHEELS for more details.
Once the low or high tire pressure message has occurred,
it will continue to blink until the tire pressure is cor-
rected.2. If the spare tire pressure has exceeded the low or high
pressure allowed, the TPM system will display a message
in the EVIC for 60 seconds and sound a chime per every
ignition cycle (5 Tire TPM System Only).
NOTE:This message will return every ignition cycle,
until the tire pressures are corrected.
3. When the vehicle is moving and the EVIC cannot
receive a valid sensor signal from the tire pressure
sensors, the TIRE PRESSURE UNAVAILABLE message
will be displayed for 5 seconds along with a chime. The
display will then shift to the individual tire pressure
display screen and display dashes for the tire or tires that
are affected. Once the TIRE PRESSURE UNAVAILABLE
message has been displayed, and valid sensor signals are
received, the EVIC will display the TIRE PRESSURE
NOW AVAILABLE message for 5 seconds along with a
chime. This is meant to inform you when the TPM system
has returned to it's normal operation. This will occur
UNDERSTANDING THE FEATURES OF YOUR VEHICLE 93
3

TO MEMORY is set to YES) when the remote keyless
entry transmitter is used to unlock the door. Pressing the
STEP button when in this display will select ªYesº or
ªNo.º
Retrain Tire Sensors? (Available with TPM System
Only)
When this feature is selected, the TPM system will start
the retraining procedure (Refer to Training Procedure
below). Pressing the STEP button when in this display
will select ªYesº or ªNo.º Then, press the MENU button
to enter selection.
WARNING!
Death or serious injury can occur if magnetically
sensitive devices are exposed to this magnet. Mag-
nets can affect pacemakers.
NOTE:The tire pressure sensors must be retrained after
rotating the tires or replacing one or more sensors. If a
wheel rotation is not followed by the retrain procedure,
the system will not properly inform you of the correct
vehicle location for a low or high pressure tire.
The following describes how to use this feature:
1. Locate the training magnet under the spare tire
(shaped like a doughnut).
2. Press the MENU button until RETRAIN TIRE SEN-
SORS is displayed.
3. Press the STEP button to select YES to retrain TPM
sensor.
4. Press the MENU button to enter selection.
5. Display will read TRAIN LEFT FRONT TIRE.
UNDERSTANDING THE FEATURES OF YOUR VEHICLE 99
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Alignment and Balance
The suspension components of your vehicle should be
inspected and aligned when needed, to obtain maximum
tire tread life.
Poor suspension alignment may result in:
²reduced tread life;
²uneven tire wear, such as feathering and one-sided
wear;
²vehicle pull to the right or to the left.
Tires may also cause the vehicle to pull left or right.
Alignment will not correct this problem. See your dealer
for proper diagnosis of the problem.
Improper alignment will not normally cause vehicle
vibration, which may be a result of tire and wheel
out-of-balance. Proper balancing will reduce vibration
and avoid tire cupping and spotty wear.
TIRE PRESSURE MONITOR SYSTEM Ð IF
EQUIPPED
The Tire Pressure Monitor System (TPM) monitors the
pressure in all 4 road tires and the full size spare (5 Tire
TPM System Only). The TPM system uses wireless
technology to monitor tire pressure levels. Sensors,
mounted to each wheel as part of the valve stem, transmit
tire pressure readings to a receiver located in the over-
head console. The tire pressure status is shown in the
Electronic Vehicle Information Center (EVIC) display.
Refer to ªOverhead Consoleº in Section 3 for more
information. The TPM system functions even when the
EVIC is not set on the tire pressure display screen.
The TPM system informs you of a low or high tire
pressure condition. If this occurs, correct your tire infla-
tion pressure as soon as possible, and inspect all of your
tires. Be sure to use a high quality gauge when adjusting
pressure. The TPM system is designed to monitor your
tire pressure but will not function as a tire pressure
STARTING AND OPERATING 217
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gauge. There will be a delay between the instant you
adjust the air pressure in a tire and when the system
updates the display. The TPM system is not intended to
provide you with notification of rapid air loss.
The following chart indicates the TPM system pressure
levels. A threshold is the level at which the TPM system
provides you with an indication.
High Pressure Threshold 45 psi (310 kPa )
Placard Pressure (Cold) 33 psi (227 kPa)
Low Pressure Threshold 25 psi (172 kPa)
NOTE: A TPM system does not replace normal tire
maintenance.
CAUTION!
The TPM system has been optimized for the original
equipment tires and wheels. TPM system pressures
have been established for the tire size equipped on
your vehicle. Undesirable operation or sensor dam-
age may result when using replacement equipment
that is not of the same size, type, and/or style.
Aftermarket wheels can cause sensor damage. Do
not use tire sealant or balance beads if your vehicle
is equipped with TPM system as damage to the
sensors may result.
Tire Pressure Monitor System Tire/Wheel
Rotation and Sensor Replacement Ð If Equipped
With the 5 Tire TPM System, if a road tire and wheel is
replaced by the spare, the TPM system will detect the
swap automatically (after the ignition has been cycled)
218 STARTING AND OPERATING

and display SPARE SWAP DETECTED along with a
chime. This could take up to 10 minutes with vehicle
speed above 25 mph (40 km/h).
With the 4 Tire TPM System, if a road tire and wheel is
replaced by the spare, the TPM system will display TIRE
SENSOR BAD/MISSING. This is due to the spare tire not
being equipped with a tire pressure sensor. Once the road
tire is repaired and/or installed back on the vehicle with
the proper tire pressure the message will be removed.
This could take up to 10 minutes with vehicle speed
above 25 mph (40 km/h).
The tire pressure sensorsmustbe retrained following a
wheel rotation or sensor replacement. Refer to ªEVIC Ð
Retrain Tire Sensorsº in Section 3 for more information. It
is necessary to program the EVIC with the new sensor(s)
or the new position of each sensor as it is rotated to a
different corner of the vehicle.If a wheel rotation is not followed by the retrain proce-
dure, the system will not properly inform you of the
correct vehicle location of a low or high tire pressure.
General Information
This device complies with part 15 of the FCC rules and
RSS 210 of Industry Canada. Operation is subject to the
following conditions:
²This device may not cause harmful interference.
²This device must accept any interference received,
including interference that may cause undesired op-
eration.
The tire pressure sensors are covered under one of the
following licenses:
United States.....................KR5S120123
Canada........................2671-S120123
STARTING AND OPERATING 219
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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

WARNING!
Temporary-use spare tires are for emergency use
only. With these tires, do not drive more than 50
miles (80 km) or exceed 50 mph (80 km/h).
Temporary-use spare tires have a total tread life of
3,000 miles (4 800 km). Be sure to follow the warn-
ings which apply to your spare. Failure to do so
could result in spare tire failure and loss of vehicle
control.
Compact Spare Tire
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).
²Temporary use spare tires are for emergency use only,
and are not intended for driving more than 50 miles
(80 km) or exceeding 50 mph (80 km/h).
²Never drive your vehicle with more than one compact
spare installed at any time.
²If your vehicle is equipped with Selec-Trac, avoid
using four-wheel drive when a compact spare is
installed. You should use 2WD only unless 4WD is
necessary. 4 FULL TIME should be used if 4WD is
required.
WHAT TO DO IN EMERGENCIES 241
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