fuel cap JEEP GRAND CHEROKEE 2010 Owner handbook (in English)

INSTRUMENT CLUSTER
DESCRIPTIONS
1. Tachometer
Indicates the engine speed in revolutions per
minute (RPM).
2. Airbag Warning Light
This light will turn on for four to eight
seconds as a bulb check when the
ignition switch is first turned to the
ON/RUN position. If the light is ei-
ther not on during starting, stays on,
or turns on while driving, then have
the system inspected at an authorized dealer as
soon as possible. Refer to “Occupant Re-
straints” in “Things To Know Before Starting Your
Vehicle” for further information.
3. Malfunction Indicator Light (MIL) The Malfunction Indicator Light (MIL)
is part of an onboard diagnostic sys-
tem called OBD II that monitors en-
gine and automatic transmission con-
trol systems. The light will illuminate
when the key is in the ON/RUN position before
engine start. If the bulb does not come on when turning the key from OFF to ON/RUN, have the
condition checked promptly.
Certain conditions such as a loose or missing
gas cap, poor fuel quality, etc., may illuminate
the light after engine start. The vehicle should
be serviced if the light stays on through several
of your typical driving cycles. In most situa-
tions, the vehicle will drive normally and will not
require towing.
CAUTION!
Prolonged driving with the MIL on could cause
damage to the engine control system. It also
could affect fuel economy and drivability. If the
MIL is flashing, severe catalytic converter
damage and power loss will soon occur. Im-
mediate service is required.
WARNING!
A malfunctioning catalytic converter, as refer-
enced above, can reach higher temperatures
than in normal operating conditions. This can
cause a fire if you drive slowly or park over
flammable substances such as dry plants or
wood or cardboard, etc. This could result in
death or serious injury to the driver, occupants
or others.
4. Electronic Stability Control (ESC)
Activation/Malfunction Indicator Light —
If Equipped The “ESC Activation/Malfunction
Indicator Light” in the instrument
cluster will come on when the igni-
tion switch is turned to the ON/
RUN position. It should go out with
the engine running. If the “ESC
Activation/Malfunction Indicator Light” comes
on continuously with the engine running, a
malfunction has been detected in the ESC
system. If this light remains on after several
ignition cycles, and the vehicle has been driven
several miles (kilometers) at speeds greater
158

•Low Fuel Light
When the fuel level reaches approxi-
mately 3.0 gal (11.0 L) this light will turn
on, and remain on until fuel is added.
• Loose Gascap Indicator
If the vehicle diagnostic system
determines that the fuel filler cap is
loose, improperly installed, or
damaged, a loose gascap indica-
tor will display in the telltale display
area. Tighten the fuel filler cap
properly and press the SELECT button to turn
off the message. If the problem continues, the
message will appear the next time the vehicle is
started.
A loose, improperly installed, or damaged fuel
filler cap may also turn on the Malfunction
Indicator Light (MIL).
• Windshield Washer Fluid Low Indicator
This light will turn on to indicate the
windshield washer fluid is low. •
SERV 4WDThe SERV 4WD light monitors the
electric shift 4WD system. If the
SERV 4WD light stays on or comes
on during driving, it means that the
4WD system is not functioning prop-
erly and that service is required.
EVIC Red Telltale LightsThis area will show reconfigurable red telltales.
These telltales include:
•Door Ajar
This light will turn on to indicate
that one or more door may be ajar.
• Liftgate Ajar
This light will turn on to indicate
that liftgate may be ajar. •
Liftgate Flipper Glass Ajar
This light will turn on to indicate
that liftgate flipper glass may be
ajar.
• Oil Pressure Warning Light
This light indicates low engine oil pres-
sure. The light should turn on momen-
tarily when the engine is started. If the
light turns on while driving, stop the vehicle and
shut off the engine as soon as possible. A
chime will sound for four minutes when this light
turns on.
Do not operate the vehicle until the cause is
corrected. This light does not show how much
oil is in the engine. The engine oil level must be
checked under the hood.
• Charging System Light
This light shows the status of the elec-
trical charging system. The light
should come on when the ignition
switch is first turned ON and remain on briefly
as a bulb check. If the light stays on or comes
on while driving, turn off some of the vehicle’s
169

•ADDING FUEL ............................ 242
• Fuel Filler Cap (Gas Cap) ................... 242
• Loose Fuel Filler Cap Message ................ 244
• TRAILER TOWING ......................... 244
• Common Towing Definitions ................. 244
• Breakaway Cable Attachment ................. 245
• Trailer Towing Weights
(Maximum Trailer Weight Ratings) .............. 246
• Trailer And Trailer Tongue Weight .............. 246
• Towing Requirements ..................... 247
• Towing Tips ........................... 249
• RECREATIONAL TOWING (BEHIND MOTORHOME, ETC) . . . 251
• Towing This Vehicle Behind Another Vehicle ........ 251
• Recreational Towing — Quadra–Trac II /Quadra–Drive 
II Four-Wheel Drive Models .................. 252
199

Normal Starting – Diesel EngineObserve the following when the engine is op-
erating.
•All message center lights are off.
• Malfunction Indicator Light (MIL) is off.
• Low Oil Pressure Light is off.
Cold Weather Precautions
Operation in ambient temperature below 32°F
(0°C) may require special considerations. The
following chart suggests these options.
*No. 1 Ultra Low Sulfur Diesel Fuel (ULSD)
should only be used where extended arctic
conditions (-10°F/-23°C) exist. NOTE:
•
Use of Climatized ULSD Diesel Fuel or
Number 1 ULSD Diesel Fuel results in a
noticeable decrease in fuel economy.
• Climatized ULSD Diesel Fuel is a blend of
Number 2 ULSD and Number 1 ULSD
Diesel Fuels, which reduces the tempera-
ture at which wax crystals form in fuel.
NOTE:
This engine requires the use of “Ultra Low
Sulfur Diesel Fuel.” Use of incorrect fuel
could result in exhaust system damage. Re-
fer to “Fuel Requirements – Diesel Engine”
in “Starting and Operating” for further infor-
mation.
Battery Blanket Usage
A battery loses 60% of its cranking power as
the battery temperature decreases to 0°F
(-18°C). For the same decrease in temperature,
the engine requires twice as much power to
crank at the same RPM. The use of battery
blankets will greatly increase starting capability
at low temperatures. Suitable battery blankets
are available from your authorized MOPAR 
dealer. Engine Starting Procedure
WARNING!
Never pour fuel or other flammable liquid into
the air inlet opening in an attempt to start the
vehicle. This could result in a flash fire causing
serious personal injury.
1. The shift lever must be in the NEUTRAL or
PARK position before you can start the engine.
2. Turn the ignition switch to the ON position.
3. Watch for the “Wait To Start Light” in the
instrument cluster. Refer to “Instrument Cluster”
in “Understanding Your Instrument Panel” for
further information. It will glow for two to ten
seconds or more, depending on engine tem-
perature. When the “Wait To Start Light” goes
out, the engine is ready to start.
4. Tip Start Feature
Do not press the accelerator. Use the Fob with
Integrated Key (FOBIK) to briefly turn the igni-
tion switch to the START position and then
release it. The starter motor will continue to run,
and it will automatically disengage when the
engine is running. If the engine fails to start, the
203

When descending mountains or hills, repeated
braking can cause brake fade with loss of
braking control. Avoid repeated heavy braking
by downshifting the transmission whenever
possible.
After Driving Off-RoadOff-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, steer-
ing, 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 com-
ponents, steering, and suspension. Re-
tighten 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.
• After extended operation in mud, sand, wa-
ter, or similar dirty conditions, have the ra-
diator, fan, brake rotors, wheels, brake lin-
ings, and axle yokes inspected and cleaned
as soon as possible.
WARNING!
Abrasive material in any part of the brakes
may cause excessive wear or unpredictable
braking. You might not have full braking power
when you need it to prevent a collision. If you
have been operating your vehicle in dirty
conditions, get your brakes checked and
cleaned as necessary.
• If you experience unusual vibration after
driving in mud, slush or similar conditions,
check the wheels for impacted material. Im-
pacted material can cause a wheel imbal-
ance and freeing the wheels of it will correct
the situation.
POWER STEERING
3.6L Engine and 3.0L Diesel Engine
Your vehicle is equipped with an electro-
hydraulic power steering system that will give
you good vehicle response and increased ease
of maneuverability in tight spaces. The system
will vary its assist to provide light efforts while
parking and good feel while driving. If the
electro-hydraulic power steering system expe-
riences a fault that prevents it from providing
power steering assist, then the system will
provide mechanical steering capability.
CAUTION!
Extreme steering maneuvers may cause the
electrically driven pump to reduce or stop
power steering assistance in order to prevent
damage to the system. Normal operation will
resume once the system is allowed to cool.
If the “SERVICE POWER STEER-
ING SYSTEM” message and a
flashing icon are displayed on the
EVIC screen, it indicates that the
vehicle needs to be taken to the
220

The TPMS will continue to warn the driver of low
tire pressure as long as the condition exists,
and will not turn off until the tire pressure is at or
above recommended cold tire pressure. Once
the “TPM Telltale Light” and the “TIRE LOW
PRESSURE” message appears, the tire pres-
sure must be increased to the recommended
cold tire pressure in order for the ”TPM Telltale
Light” and the “TIRE LOW PRESSURE” mes-
sage to be turned off. The system will automati-
cally update and the “TPM Telltale Light” and
the “TIRE LOW PRESSURE” message will turn
off once the updated tire pressures have been
received. The vehicle may need to be driven for
up to 20 minutes above 15 mph (24 km/h) to
receive this information.
For example, your vehicle has a recommended
cold (parked for more than three hours) tire
pressure of 33 psi (227 kPa). If the ambient
temperature is 68°F (20°C) and the measured
tire pressure is 28 psi (193 kPa), a temperature
drop to 20°F (-7°C) will decrease the tire pres-
sure to approximately 24 psi (165 kPa). This tire
pressure is sufficiently low enough to display
the “TPM Telltale Light” and the “TIRE LOW
PRESSURE” message. Driving the vehicle maycause the tire pressure to rise to approximately
28 psi (193 kPa), but the “TPM Telltale Light”
and the “TIRE LOW PRESSURE” message will
still display. In this situation, the “TPM Telltale
Light” and the “TIRE LOW PRESSURE” mes-
sage will turn OFF only after the tires have been
inflated to the vehicle’s recommended cold tire
pressure value.
CAUTION!
•
The TPMS has been optimized for the
original equipment tires and wheels. TPMS
pressures have been established for the
tire size equipped on your vehicle. Unde-
sirable system operation or sensor damage
may result when using replacement equip-
ment that is not of the same size, type,
and/or style. Aftermarket wheels can cause
sensor damage. Do not use aftermarket tire
sealants or balance beads if your vehicle is
equipped with a TPMS, as damage to the
sensors may result.
(Continued)
CAUTION!(Continued)
• After inspecting or adjusting the tire pres-
sure always reinstall the valve stem cap.
This will prevent moisture and dirt from
entering the valve stem, which could dam-
age the Tire Pressure Monitoring Sensor.
NOTE:
• The TPMS is not intended to replace nor-
mal tire care and maintenance, or to pro-
vide warning of a tire failure or condition.
• The TPMS should not be used as a tire
pressure gauge while adjusting your tire
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.
• The TPMS is not a substitute for proper
tire maintenance, and it is the driver’s
responsibility to maintain correct tire
pressure using an accurate tire gauge,
even if under-inflation has not reached
235

WARNING!(Continued)
• Do not inhale exhaust gases. They contain
carbon monoxide, a colorless and odorless
gas which can kill. Never run the engine in
a closed area, such as a garage, and never
sit in a parked vehicle with the engine
running for an extended period. If the ve-
hicle is stopped in an open area with the
engine running for more than a short pe-
riod, adjust the ventilation system to force
fresh, outside air into the vehicle.
• Guard against carbon monoxide with
proper maintenance. Have the exhaust
system inspected every time the vehicle is
raised. Have any abnormal conditions re-
paired promptly. Until repaired, drive with
all side windows fully open.
• Keep the liftgate closed when driving your
vehicle to prevent carbon monoxide and
other poisonous exhaust gases from enter-
ing the vehicle.FUEL REQUIREMENTS — DIESEL
ENGINE
Use good quality diesel fuel from a reputable
supplier. For most year-round service, No. 2
diesel fuel, meeting ASTM specification D-975
Grade S15, will provide good performance. If
the vehicle is exposed to extreme cold (below
20° F or -7° C), or is required to operate at
colder-than-normal conditions for prolonged
periods, use climatized No. 2 diesel fuel or
dilute the No. 2 diesel fuel with 50% No. 1
diesel fuel. This will provide better protection
from fuel gelling or wax-plugging of the fuel
filters. This vehicle must only use premium
diesel fuel that meets the requirements of
EN 590. Biodiesel blends that meet EN 590
may also be used.
CAUTION!
The manufacturer requires that you must fuel
this vehicle with Ultra Low Sulfur Highway
Diesel fuel (15 ppm Sulfur maximum) and
prohibits the use of Low Sulfur Highway Die-
sel fuel (500 ppm Sulfur maximum) to avoid
damage to the emissions control system.
WARNING!
Do not use alcohol or gasoline as a fuel-
blending agent. They can be unstable under
certain conditions and hazardous or explosive
when mixed with diesel fuel.
Diesel fuel is seldom completely free of water.
To prevent fuel system trouble, drain the accu-
mulated water from the fuel/water separator
using the provided fuel/water separator drain. If
you buy good quality fuel and follow the cold
weather advice above, fuel conditioners should
not be required in your vehicle. If available in
your area, a high cetane “premium” diesel fuel
may offer improved cold-starting and warm-up
performance.
ADDING FUEL
Fuel Filler Cap (Gas Cap)
The gas cap is located behind the locking fuel
filler door, on the driver’s side of the vehicle. If
the gas cap is lost or damaged, be sure the
replacement cap is for use with this vehicle.
1. Press the fuel filler door release switch (lo-
cated under the headlamp switch).
242

2. Open the fuel filler door, and remove the fuel
filler cap.
CAUTION!
•Damage to the fuel system or emission
control system could result from using an
improper fuel cap (gas cap). A poorly fitting
cap could let impurities into the fuel system.
Also, a poorly fitting aftermarket cap can
cause the “Malfunction Indicator Light
(MIL)” to illuminate, due to fuel vapors
escaping from the system.
• A poorly fitting gas cap may cause the MIL
to turn on.
• To avoid fuel spillage and overfilling, do not
“top off” the fuel tank after filling.
WARNING!
• Never have any smoking materials lit in or
near the vehicle when the gas cap is re-
moved or the tank is being filled.
• Never add fuel when the engine is running.
This is in violation of most state and federal
fire regulations and may cause the mal-
function indicator light to turn on.
(Continued)
WARNING!(Continued)
• A fire may result if gasoline is pumped into
a portable container that is inside of a
vehicle. You could be burned. Always place
gas containers on the ground while filling.
NOTE:
• When the fuel nozzle “clicks” or shuts off,
the fuel tank is full.
• Tighten the gas cap about one-quarter
turn until you hear one click. This is an
indication that the cap is properly tight-
ened.
• If the gas cap is not tighten properly, the
MIL will come on. Be sure the gas cap is
tightened every time the vehicle is refu-
eled.
Emergency Fuel Filler Door Release
If you are unable to open the fuel filler door, use
the fuel filler door emergency release.
1. Open the liftgate.
2. Remove the left rear storage bin cover.
3. Pull the release cable.
Fuel Filler Door Release Switch
Fuel Filler Cap
243

Loose Fuel Filler Cap Message
If the vehicle diagnostic system
determines that the fuel filler cap is
loose, improperly installed, or
damaged, a loose gascap indica-
tor will display in the EVIC telltale
display area. Refer to “Electronic
Vehicle Information Center (EVIC)” in “Under-
standing Your Instrument Panel” for further in-
formation. Tighten the fuel filler cap properly
and press the SELECT button to turn off the
message. If the problem continues, the mes-
sage will appear the next time the vehicle is
started.
TRAILER TOWINGIn this section you will find safety tips and
information on limits to the type of towing you
can reasonably do with your vehicle. Before
towing a trailer, carefully review this information
to tow your load as efficiently and safely as
possible.
To maintain warranty coverage, follow the re-
quirements and recommendations in this
manual concerning vehicles used for trailer
towing.
Common Towing DefinitionsThe following trailer towing related definitions
will assist you in understanding the following
information.
Gross Vehicle Weight Rating (GVWR)
The GVWR is the total allowable weight of your
vehicle. This includes driver, passengers,
cargo and trailer tongue weight. The total load
must be limited so that you do not exceed the
GVWR.
Gross Trailer Weight (GTW)
The GTW is the weight of the trailer plus the
weight of all cargo, consumables and equip-
ment (permanent or temporary) loaded in or on
the trailer in its loaded and ready for operation 
condition.
The recommended way to measure GTW is to
put your fully loaded trailer on a vehicle scale.
The entire weight of the trailer must be sup-
ported by the scale.
Gross Combination Weight Rating (GCWR)
The GCWR is the total permissible weight of
your vehicle and trailer when weighed in com-
bination. NOTE:
The GCWR rating includes a 150 lbs (68 kg)
allowance for the presence of a driver.
Gross Axle Weight Rating (GAWR)
The GAWR is the maximum capacity of the front
and rear axles. Distribute the load over the front
and rear axles evenly. Make sure that you do
not exceed either front or rear GAWR.
WARNING!
It is important that you do not exceed the
maximum front or rear GAWR. A dangerous
driving condition can result if either rating is
exceeded. You could lose control of the ve-
hicle and have an accident.
Trailer Tongue Weight (TW)
The TW is the downward force exerted on the
hitch ball by the trailer. In most cases it should
not be more than 5% of the trailer load. You
must consider this as part of the load on your
vehicle.
244

7
MAINTAINING YOUR VEHICLE
•ENGINE COMPARTMENT – 3.6L ................. 270
• ENGINE COMPARTMENT – 5.7L ................. 271
• ENGINE COMPARTMENT – 3.0L DIESEL ............ 272
• ONBOARD DIAGNOSTIC SYSTEM – OBD II ........... 273
• Loose Fuel Filler Cap Message ................ 273
• REPLACEMENT PARTS ...................... 273
• MAINTENANCE PROCEDURES .................. 273
• Engine Oil – Gasoline Engines ................ 274
• Engine Oil – Diesel Engine .................. 275
• Synthetic Engine Oils ..................... 275
• Materials Added to Engine Oils ................ 276
• Disposing of Used Engine Oil and Filters .......... 276
• Engine Oil Filter ......................... 276
• Engine Air Cleaner Filter .................... 276
• Maintenance-Free Battery ................... 276
• Air Conditioner Maintenance ................. 277
267