2015 JEEP GRAND CHEROKEE spare tire

WARNING!(Continued)
•Check mounting of mats on a regular basis. Always
properly reinstall and secure floor mats that have
been removed for cleaning.
•Always make sure that objects cannot fall into the
driver footwell while the vehicle is moving. Ob-
jects can become trapped under the brake pedal
and accelerator pedal causing a loss of vehicle
control.
•If required, mounting posts must be properly in-
stalled, if not equipped from the factory.
Failure to properly follow floor mat installation or
mounting can cause interference with the brake
pedal and accelerator pedal operation causing loss of
control of the vehicle.
Periodic Safety Checks You Should Make Outside
The Vehicle
Tires
Examine tires for excessive tread wear and uneven wear
patterns. Check for stones, nails, glass, or other objects
lodged in the tread or sidewall. Inspect the tread for cuts
and cracks. Inspect sidewalls for cuts, cracks and bulges.
Check the wheel nuts for tightness. Check the tires
(including spare) for proper cold inflation pressure.
Lights
Have someone observe the operation of brake lights and
exterior lights while you work the controls. Check turn
signal and high beam indicator lights on the instrument
panel.
11 2 T H I N G S TO K N O W B E F O R E S TA R T I N G Y O U R V E H I C L E

The light also will turn on when the parking brake is
applied with the ignition switch in the ON/RUN posi-
tion.
NOTE:This light shows only that the parking brake is
applied. It does not show the degree of brake application.
13. Fuel Gauge/Fuel Door Reminder
The fuel pump symbol points to the side of the vehicle
where the fuel door is located. The pointer shows the
level of fuel in the fuel tank when the ignition switch is in
the ON/RUN position.
14. Tire Pressure Monitoring Telltale Light
Each tire, including the spare (if provided),
should be checked monthly when cold and
inflated to the inflation pressure recommended
by the vehicle manufacturer on the vehicle
placard or tire inflation pressure label. (If your vehicle
has tires of a different size than the size indicated on the
vehicle placard or tire inflation pressure label, you should
determine the proper tire inflation pressure for those
tires.)
As an added safety feature, your vehicle has been
equipped with a Tire Pressure Monitoring System
(TPMS) that illuminates a low tire pressure telltale when
one or more of your tires is significantly under-inflated.
Accordingly, when the low tire pressure telltale illumi-
nates, you should stop and check your tires as soon as
possible, and inflate them to the proper pressure. Driving
on a significantly under-inflated tire causes the tire to
overheat and can lead to tire failure. Under-inflation also
reduces fuel efficiency and tire tread life, and may affect
the vehicle’s handling and stopping ability.
Please note that the TPMS is not a substitute for proper
tire maintenance, and it is the driver ’s responsibility to
maintain correct tire pressure, even if under-inflation has
not reached the level to trigger illumination of the TPMS
low tire pressure telltale.
4
UNDERSTANDING YOUR INSTRUMENT PANEL 297

the touchscreen until a check-mark appears next to
setting, showing that setting has been selected. Press the
back arrow button on the touchscreen to return to the
previous menu.
Suspension — If Equipped
After pressing the Suspension button on the touchscreen
the following settings will be available.
•Auto Entry/Exit Suspension
When this feature is selected, the vehicle lowers the
suspension for easy entry/exit. Press the “Auto Entry/
Exit Suspension” button until a check-mark appears next
to the feature showing the system has been activated or
the check-mark is removed showing the system has been
deactivated. Press the back arrow button on the touch-
screen to return to the previous menu.
•Suspension Display Messages
When “All” is selected, all the Air Suspension Alerts will
be displayed. When “Warnings Only” is selected only the
Air Suspension Warnings will be displayed.
•Tire Jack Mode
When this feature is selected the air suspension system is
disabled to assist with changing a spare tire. Press the
“Tire Jack Mode” button until a check-mark appears next
to the feature showing the system has been activated or
the check-mark is removed showing the system has been
deactivated. Press the back arrow button on the touch-
screen to return to the previous menu.
•Transport Mode
When this feature is selected the air suspension system is
disabled to assist with flat bed towing. Press the “Trans-
port Mode” button until a check-mark appears next to
the feature showing the system has been activated or the
4
UNDERSTANDING YOUR INSTRUMENT PANEL 355

▫Radial Ply Tires......................508
▫Tire Types...........................509
▫Run Flat Tires — If Equipped.............511
▫Spare Tires — If Equipped...............511
▫Tire Spinning........................514
▫Tread Wear Indicators..................514
▫Life Of Tire.........................515
▫Replacement Tires.....................515
!TIRE CHAINS (TRACTION DEVICES).......517
!TIRE ROTATION RECOMMENDATIONS.....518
!TIRE PRESSURE MONITOR SYSTEM (TPMS) . .520
▫Premium System......................522
▫Tire Pressure Monitoring Low Pressure
Warnings...........................523
▫SERVICE TPM SYSTEM Warning..........525
▫General Information...................526
!FUEL REQUIREMENTS..................527
▫3.6L Engine — If Equipped...............527
▫5.7L Engine — If Equipped...............527
▫Reformulated Gasoline.................528
▫Gasoline/Oxygenate Blends..............528
▫E-85 Usage In Non-Flex Fuel Vehicles.......529
▫MMT In Gasoline.....................529
▫Materials Added To Fuel................530
▫Fuel System Cautions...................530
418 STARTING AND OPERATING

The system requires that the engine be running for all
changes. When lowering the vehicle all of the doors,
including the liftgate, must be closed. If a door is opened
at any time while the vehicle is lowering the change will
not be completed until the open door(s) is closed.
The Quadra-Lift™ air suspension system uses a lifting
and lowering pattern which keeps the headlights from
incorrectly shining into oncoming traffic. When raising
the vehicle, the rear of the vehicle will move up first and
then the front. When lowering the vehicle, the front will
move down first and then the rear.
After the engine is turned off, it may be noticed that the
air suspension system operates briefly, this is normal. The
system is correcting the position of the vehicle to ensure
a proper appearance.
To assist with changing a spare tire, the Quadra-Lift™ air
suspension system has a feature which allows the auto-
matic leveling to be disabled. Refer to “Uconnect® Set-
tings” in “Understanding Your Instrument Panel” for
further information.
NOTE:If equipped with a touch screen radio all
enabling/disabling of air suspension features must be
done through the radio. Refer to “Uconnect® Access
Settings” in “Understanding Your Instrument Panel” for
further information.
WARNING!
The air suspension system uses a high pressure
volume of air to operate the system. To avoid per-
sonal injury or damage to the system, see your
authorized dealer for service.
5
STARTING AND OPERATING 453

Air Suspension Modes
The Air Suspension system has multiple modes to protect
the system in unique situations:
Tire/Jack Mode
To assist with changing a spare tire, the air suspension
system has a feature which allows the automatic leveling
to be disabled. Refer to “Uconnect® Settings” in “Under-
standing Your Instrument Panel” for further information.
NOTE:This mode is intended to be enabled with engine
running.
Transport Mode
To assist with flat bed towing, the air suspension system
has a feature which will put the vehicle into Entry/Exit
height and disable the automatic load leveling system.
Refer to “Uconnect® Settings” in “Understanding Your
Instrument Panel” for further information.
NOTE:This mode is intended to be enabled with engine
running.
Wheel Alignment Mode
Before performing a wheel alignment this mode must be
enabled. Refer to “Uconnect® Settings” in “Understand-
ing Your Instrument Panel” for further information.
NOTE:This mode is intended to be enabled with engine
running.
If equipped with a touch screen radio all enabling/
disabling of air suspension features must be done
through the radio. Refer to “Uconnect® Settings” in
“Understanding Your Instrument Panel” for further in-
formation.
454 STARTING AND OPERATING

•Temporary spare tires are designed for temporary
emergency use only. Temporary high pressure com-
pact spare tires have the letter “T” or “S” molded into
the sidewall preceding the size designation. Example:
T145/80D18 103M.
•High flotation tire sizing is based on U.S. design
standards and it begins with the tire diameter molded
into the sidewall. Example: 31x10.5 R15 LT.
Tire Sizing Chart
EXAMPLE:
Example Size Designation: P215/65R15XL 95H, 215/65R15 96H, LT235/85R16C, T145/80D18 103M, 31x10.5 R15 LT
P= Passenger car tire size based on U.S. design standards, or
'....blank....'= Passenger car tire based on European design standards, or
LT= Light truck tire based on U.S. design standards, or
TorS= Temporary spare tire or
31= Overall diameter in inches (in)
215, 235, 145= Section width in millimeters (mm)
494 STARTING AND OPERATING

3. Tire size designed for your vehicle.
4. Cold tire inflation pressures for the front, rear, and
spare tires.
Loading
The vehicle maximum load on the tire must not exceed
the load carrying capacity of the tire on your vehicle. You
will not exceed the tire’s load carrying capacity if you
adhere to the loading conditions, tire size, and cold tire
inflation pressures specified on the Tire and Loading
Information placard and in the “Vehicle Loading” section
of this manual.
NOTE:Under a maximum loaded vehicle condition,
gross axle weight ratings (GAWRs) for the front and rear
axles must not be exceeded. For further information on
GAWRs, vehicle loading, and trailer towing, refer to
“Vehicle Loading” in this section.
To determine the maximum loading conditions of your
vehicle, locate the statement “The combined weight of
occupants and cargo should never exceed XXX lbs or
XXX kg” on the Tire and Loading Information placard.
The combined weight of occupants, cargo/luggage and
trailer tongue weight (if applicable) should never exceed
the weight referenced here.
Steps For Determining Correct Load Limit
1. Locate the statement “The combined weight of occu-
pants and cargo should never exceed XXX lbs or
XXX kg” on your vehicle’s placard.
2. Determine the combined weight of the driver and
passengers that will be riding in your vehicle.
3. Subtract the combined weight of the driver and pas-
sengers from XXX lbs or XXX kg.
502 STARTING AND OPERATING