tires JEEP GRAND CHEROKEE 2015 WK2 / 4.G Owners Manual

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.
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UNDERSTANDING YOUR INSTRUMENT PANEL 297

Your vehicle has also been equipped with a TPMS
malfunction indicator to indicate when the system is not
operating properly. The TPMS malfunction indicator is
combined with the low tire pressure telltale. When the
system detects a malfunction, the telltale will flash for
approximately one minute and then remain continuously
illuminated. This sequence will continue upon subse-
quent vehicle start-ups as long as the malfunction exists.
When the malfunction indicator is illuminated, the sys-
tem may not be able to detect or signal low tire pressure
as intended. TPMS malfunctions may occur for a variety
of reasons, including the installation of replacement or
alternate tires or wheels on the vehicle that prevent the
TPMS from functioning properly. Always check the
TPMS malfunction telltale after replacing one or more
tires or wheels on your vehicle, to ensure that the
replacement or alternate tires and wheels allow the TPMS
to continue to function properly.
CAUTION!
The TPMS has been optimized for the original
equipment tires and wheels. TPMS pressures and
warning have been established for the tire size
equipped on your vehicle. Undesirable system opera-
tion or sensor damage may result when using re-
placement equipment that is not of the same size,
type, and/or style. Aftermarket wheels can cause
sensor damage. Do not use tire sealant from a can or
balance beads if your vehicle is equipped with a
TPMS, as damage to the sensors may result.
15. Driver Information Display (DID)
The odometer display shows the total distance the ve-
hicle has been driven.
U.S. Federal regulations require that upon transfer of
vehicle ownership, the seller certify to the purchaser the
correct mileage that the vehicle has been driven. If your
298 UNDERSTANDING YOUR INSTRUMENT PANEL

Speedometer
Push and release the LEFT or RIGHT arrow
button to toggle between the Speedometer dis-
play type (Analog or Digital).
MPH To km/h
Push and release the UP or DOWN arrow button
until the MPH to km/h icon is highlighted in the
DID. Push and release the OK button to change
the display between MPH or km/h.
Vehicle Info (Customer Information Features)
Push and release the UP or DOWN arrow
button until the Vehicle Info icon/title is high-
lighted in the DID. Push and release the RIGHT
arrow button and Coolant Temp will be dis-
played. Push and release the LEFT or RIGHT arrow
button to scroll through the information submenus and
push and release the OK button to select or reset the
following resettable submenus:
Tire Pressure
Press and release the Left or Right arrow button until
“Tire Pressure” is highlighted in the DID.
If tire pressure is OK for all tires a vehicle ICON is
displayed with tire pressure values in each corner of the
ICON.
Analog
Speedometer
Digital
Speedometer
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UNDERSTANDING YOUR INSTRUMENT PANEL 315

If one or more tires have low pressure, “Inflate Tire To
XX” is displayed with the vehicle ICON and the tire
pressure values in each corner of the ICON with the
pressure value of the low tire displayed in a different
color than the other tire pressure values.
If the Tire Pressure system requires service, “Service Tire
Pressure System” is displayed.
Tire Pressure is an information only function and cannot
be reset.
Refer to “Tire Pressure Monitoring System (TPMS)”
under “Starting and Operating” for further information.
Transmission Temperature
•Displays the actual transmission temperature.
Oil Temperature
•Displays the actual oil temperature
Oil Pressure
•Displays the actual oil pressure.
Oil Life
Battery Voltage
Engine Hours
•Displays the number of hours of engine operation.
Terrain — If Equipped
Push and release the UP or DOWN
arrow button until the Terrain display
icon/title is highlighted in the DID.
Push and release the RIGHT arrow
button to display the Selec-Terrain, Air
Suspension, Drivetrain, and Wheel
Articulation.
316 UNDERSTANDING YOUR INSTRUMENT PANEL

!BRAKE SYSTEM.......................472
!ELECTRONIC BRAKE CONTROL SYSTEM . . . .473
▫Anti-Lock Brake System (ABS)............473
▫Traction Control System (TCS)............475
▫Brake Assist System (BAS)...............475
▫Electronic Roll Mitigation (ERM)..........476
▫Electronic Stability Control (ESC)..........477
▫Trailer Sway Control (TSC)..............480
▫Hill Start Assist (HSA).................481
▫Ready Alert Braking — If Equipped........483
▫Rain Brake Support — If Equipped.........483
▫Hill Descent Control (HDC) — If Equipped
(Four-Wheel Drive Models With MP3023
Two-Speed Transfer Case Only)...........484
▫Selec Speed Control (SSC) — If Equipped
(Four-Wheel Drive Models With MP3023
Two-Speed Transfer Case Only)...........488
▫ESC Activation/Malfunction Indicator Light And
ESC OFF Indicator Light................491
!TIRE SAFETY INFORMATION.............493
▫Tire Markings........................493
▫Tire Identification Number (TIN)...........497
▫Tire Terminology And Definitions..........498
▫Tire Loading And Tire Pressure...........500
!TIRES — GENERAL INFORMATION........505
▫Tire Pressure........................505
▫Tire Inflation Pressures.................506
▫Tire Pressures For High Speed Operation . . . .508
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STARTING AND OPERATING 417

▫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 same speed. The 4WD LOW position is intended for
loose, slippery road surfaces only. Driving in the 4WD
LOW position on dry, hard-surfaced roads may cause
increased tire wear and damage to driveline components.
When operating your vehicle in 4WD LOW, the engine
speed is approximately three times that of the 4WD HI
position at a given road speed. Take care not to overspeed
the engine and do not exceed 25 mph (40 km/h).
Proper operation of four-wheel drive vehicles depends
on tires of equal size, type, and circumference on each
wheel. Any difference will adversely affect shifting and
cause damage to the transfer case.
Because four-wheel drive provides improved traction,
there is a tendency to exceed safe turning and stopping
speeds. Do not go faster than road conditions permit.
WARNING!
You or others could be injured or killed if you leave
the vehicle unattended with the transfer case in the
NEUTRAL position without first fully engaging the
parking brake. The transfer case NEUTRAL position
disengages both the front and rear drive shafts from
the powertrain and will allow the vehicle to roll,
even if the transmission is in PARK. The parking
brake should always be applied when the driver is
not in the vehicle.
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STARTING AND OPERATING 441

Avoid abrupt downshifts on icy or slippery roads, be-
cause engine braking may cause skidding and loss of
control.
Hill Climbing
NOTE:Before attempting to climb a hill, determine the
conditions at the crest and/or on the other side.
Before climbing a steep hill,shift the transmission to a
lower gear and shift the transfer case to 4WD LOW. Use
first gear and 4WD LOW for very steep hills.
If you stall or begin to lose forward motionwhile
climbing a steep hill, allow your vehicle to come to a stop
and immediately apply the brakes. Restart the engine,
and shift into REVERSE. Back slowly down the hill,
allowing the compression braking of the engine 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, you lose forward motion, 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 REVERSE gear. Never
back down a hill in 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 forward motion
by turning the front wheels slowly. This may provide a
fresh “bite” into the surface and will usually provide
traction to complete the climb.
464 STARTING AND OPERATING

Traction Downhill
When descending mountains or hills, use Hill Descent or
Selec-Speed Control to avoid repeated heavy braking.
If not equipped with Hill Descent or Selec-Speed Control
use the following procedure:
Shift the transmission into a low gear, and the transfer
case into 4WD LOW range. Let the vehicle go slowly
down the hill with all four wheels turning against engine
compression 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.
After Driving Off-Road
Off-road operation puts more stress on your vehicle than
does most on-road driving. After going off-road, it is
always a good idea to check for damage. That way you
can get any problems taken care of right away and have
your vehicle ready when you need it.
•Completely inspect the underbody of your vehicle.
Check tires, body structure, steering, suspension, and
exhaust system for damage.
•Inspect the radiator for mud and debris and clean as
required.
•Check threaded fasteners for looseness, particularly on
the chassis, drivetrain components, steering, and sus-
pension. Retighten them, if required, and torque to the
values specified in the Service Manual.
•Check for accumulations of plants or brush. These
things could be a fire hazard. They might hide damage
to fuel lines, brake hoses, axle pinion seals, and
propeller shafts.
5
STARTING AND OPERATING 465