check engine JEEP GRAND CHEROKEE 2010 Owner handbook (in English)

•Automatic Locking Retractors (ALR) Mode —
If Equipped ............................. 33
• Seat Belts In Passenger Seating Positions .......... 33
• Seat Belt Pretensioners ..................... 34
• Supplemental Active Head Restraints (AHR) ......... 34
• Enhanced Seat Belt Use Reminder System (BeltAlert )..36
• Seatbelt Lock Out ......................... 36
• Seat Belts and Pregnant Women ................ 36
• Supplemental Restraint System (SRS) — Airbags ...... 37
• Advanced Front Airbag Features ................ 38
• Airbag Deployment Sensors and Controls .......... 41
• Event Data Recorder (EDR) ................... 45
• Child Restraints .......................... 46
• ENGINE BREAK-IN RECOMMENDATIONS ............. 54
• Additional Requirements For Diesel Engine —
If Equipped ............................. 54
• SAFETY TIPS ............................. 55
• Transporting Passengers .................... 55
• Exhaust Gas ............................ 55
• Safety Checks You Should Make Inside the Vehicle ..... 56
• Periodic Safety Checks You Should Make Outside the
Vehicle ............................... 57
11

Key-In-Ignition ReminderOpening the driver’s door when the Key Fob is
in the ignition and the ignition switch position is
OFF or ACC, sounds a signal to remind you to
remove the Key Fob.
NOTE:
The Key-In-Ignition reminder only sounds
when the Key Fob is placed in the OFF or
ACC ignition position.
With the Keyless Enter-N-Go feature, opening
the driver’s door when the vehicle’s ignition
switch is placed in ACC or ON/RUN (engine
stopped) will cause the reminder chime to
sound. Refer to “Starting Procedures” in “Start-
ing And Operating” for further information.
SENTRY KEYThe Sentry Key Immobilizer system prevents
unauthorized vehicle operation by disabling
the engine. The system does not need to be
armed or activated. Operation is automatic,
regardless of whether the vehicle is locked or
unlocked. The system uses the factory-mated Key Fob
with Remote Keyless Entry (RKE) transmitter
and Wireless Ignition Node (WIN) to prevent
unauthorized vehicle operation. Therefore, only
Key Fobs that are programmed to the vehicle
can be used to start and operate the vehicle.
The system will shut the engine off in two
seconds if an invalid Key Fob is used to start
the engine.
After turning the ignition switch to the ON/RUN
position, the Vehicle Security Light will turn on
for three seconds for a bulb check. If the light
remains on after the bulb check, it indicates
that there is a problem with the electronics. In
addition, if the light begins to flash after the
bulb check, it indicates that someone used an
invalid Key Fob to start the engine. Either of
these conditions will result in the engine being
shut off after two seconds.
If the Vehicle Security Light turns on during
normal vehicle operation (vehicle running for
longer than 10 seconds), it indicates that there
is a fault in the electronics. Should this occur,
have the vehicle serviced as soon as possible
by an authorized dealer.
CAUTION!
The Sentry Key
Immobilizer system is not
compatible with some after-market remote
starting systems. Use of these systems may
result in vehicle starting problems and loss of
security protection.
All of the Key Fobs provided with your new
vehicle have been programmed to the vehicle
electronics.
Replacement Keys
NOTE:
Only Key Fobs that are programmed to the
vehicle electronics can be used to start and
operate the vehicle. Once a Key Fob is
programmed to a vehicle, it cannot be pro-
grammed to any other vehicle.
CAUTION!
• Always remove the Key Fobs from the
vehicle and lock all doors when leaving the
vehicle unattended.
(Continued)
14

WARNING!(Continued)
• Never put floor mats or other floor cover-
ings on top of already installed floor mats.
Additional floor mats and other coverings
will reduce the size of the pedal area and
interfere with the pedals.
• 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 foot well while the vehicle is
moving. Objects can become trapped un-
der the brake pedal and accelerator pedal
causing a loss of vehicle control.
(Continued)WARNING!(Continued)
• If required, mounting posts must be prop-
erly installed, if not equipped from the fac-
tory.
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.
Inspect the tread and sidewall for cuts and
cracks. Check the wheel nuts for tightness.
Check the tires (including spare) for proper
pressure. Lights
Have someone observe the operation of exte-
rior lights while you work the controls. Check
turn signal and high beam indicator lights on
the instrument panel.
Door Latches
Check for positive closing, latching, and lock-
ing.
Fluid Leaks
Check area under vehicle after overnight park-
ing for fuel, engine coolant, oil, or other fluid
leaks. Also, if gasoline fumes are detected or if
fuel, power steering fluid, or brake fluid leaks
are suspected, the cause should be located
and corrected immediately.
57

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

non-essential electrical devices or increase en-
gine speed (if at idle). If the charging system
light remains on, it means that the vehicle is
experiencing a problem with the charging sys-
tem. Obtain SERVICE IMMEDIATELY. See an
authorized dealer.
If jump starting is required, refer to “Jump
Starting Procedures” in “What To Do In Emer-
gencies”.
•Electronic Throttle Control (ETC) Light
This light informs you of a problem
with the Electronic Throttle Control
(ETC) system. The light will come
on when the ignition is first turned
ON and remain on briefly as a bulb
check. If the light does not come
on during starting, have the system checked by
an authorized dealer.
If a problem is detected, the light will come on
while the engine is running. Cycle the ignition
key when the vehicle has completely stopped
and the shift lever is placed in the PARK
position. The light should turn off.
If the light remains lit with the engine running
your vehicle, will usually be drivable, however, see an authorized dealer for service as soon as
possible. If the light is flashing when the engine
is running, immediate service is required and
you may experience reduced performance, an
elevated/rough idle or engine stall and your
vehicle may require towing.
•
Engine Temperature Warning Light
This light warns of an overheated en-
gine condition. As temperatures rise
and the gauge approaches H,this
indicator will illuminate and a single
chime will sound after reaching a set threshold.
Further overheating will cause the temperature
gauge to pass H,the indicator will continuously
flash and a continuous chime will occur until
the engine is allowed to cool.
If the light turns on while driving, safely pull
over and stop the vehicle. If the A/C system is
on, turn it off. Also, shift the transmission into
NEUTRAL and idle the vehicle. If the tempera-
ture reading does not return to normal, turn the
engine off immediately and call for service.
Refer to “If Your Engine Overheats” in “What To
Do In Emergencies” for more information. •
Transmission Temperature Light
This light indicates that there is
excessive transmission fluid tem-
perature that might occur with se-
vere usage such as trailer towing.
It may also occur when operating
the vehicle in a high torque con-
verter slip condition, such as 4-wheel-drive
operation (e.g., snow plowing, off- road opera-
tion). If this light comes on, stop the vehicle and
run the engine at idle or faster, with the trans-
mission in NEUTRAL until the light goes off.
CAUTION!
Continuous driving with the Transmission
Temperature Indicator illuminated will eventu-
ally cause severe transmission damage or
transmission failure.
170

Elapsed Time
Shows the total elapsed time of travel since the
last reset when the ignition switch is in the ACC
position. Elapsed time will increment when the
ignition switch is in the ON or START position.
To Reset The Display
Reset will only occur while a resettable function
is being displayed. Press and release the SE-
LECT button once to clear the resettable func-
tion being displayed. To reset all resettable
functions, press and hold the SELECT button
for two seconds. Current display will reset
along with other functions
UnitsPress and release the UP or DOWN button until
“Units” displays highlighted in the EVIC and
press the SELECT button. The EVIC, odometer,
and navigation system (if equipped) can be
changed between English and Metric units of
measure. To make your selection, scroll up or
down until the preferred setting is highlighted,
then press and release the SELECT button until
a check-mark appears next to the setting,
showing that setting has been selected.
Vehicle Info
(Customer Information Features)
Press and release the UP or DOWN button until
“SYSTEM” displays highlighted in the EVIC and
press the SELECT button. Press the UP and
DOWN button to scroll through the available
information displays, then press SELECT to
display anyone of the following choices.
•Coolant Temp
Displays the actual coolant temperature.
• Oil Temperature
Displays the actual oil temperature.
• Oil Pressure
Displays the actual oil pressure.
• Trans Temperature
Displays the actual transmission temperature.
• Engine Hours
Displays the hours of engine operation.
Tire PSI
Press and release the UP or DOWN button until
“Tire PSI” displays highlighted in the EVIC and
press the SELECT button. Press and release the UP/DOWN buttons until one of the following
System Status messages displays in the EVIC:
•
System OK
• System Warnings Displayed (will display all
currently active System Warnings)
• Tire Pressure Monitor System (shows the
current pressure of all four road tires). For
additional information, refer to “Tire Pressure
Monitor System” in “Starting And Operating”.Tire Pressure Display
173

•After Driving Off-Road ..................... 220
• POWER STEERING ......................... 220
• 3.6L Engine and 3.0L Diesel Engine ............. 220
• 5.7L Engine ........................... 221
• Power Steering Fluid Check .................. 221
• MULTI-DISPLACEMENT SYSTEM (MDS) (IF EQUIPPED) —
5.7L ENGINE ONLY ......................... 222
• PARKING BRAKE .......................... 222
• ELECTRONIC BRAKE CONTROL SYSTEM ........... 223
• Anti-Lock Brake System (ABS) ................ 223
• Traction Control System (TCS) ................ 224
• Brake Assist System (BAS) .................. 224
• Electronic Roll Mitigation (ERM) ............... 224
• Electronic Stability Control (ESC) .............. 225
• Trailer Sway Control (TSC) .................. 226
• Hill Start Assist (HSA) ..................... 227
• Ready Alert Braking ...................... 228
• Rain Brake Support ....................... 228
• Hill Descent Control (HDC) — Four-Wheel Drive Models
With MP3023 Two-Speed Transfer Case Only ........ 228
• ESC Activation/Malfunction Indicator Light and ESC OFF
Indicator Light .......................... 229
197

The “TOW/HAUL Indicator Light” will illuminate
in the instrument cluster to indicate when the
switch has been activated. Pressing the switch
a second time restores normal operation. If the
TOW/HAUL mode is desired, the switch must
be pressed each time the engine is started.
In high ambient temperatures with sustained
high engine speed and load, an upshift, fol-
lowed shortly thereafter by a downshift, may
occur. The “TOW/HAUL Indicator Light” will
turn off. This is a normal part of the overheat
protection strategy when operating in the TOW/
HAUL mode.
Transmission Limp Home Mode
Transmission function is monitored for abnor-
mal conditions. If a condition is detected that
could result in transmission damage, the Trans-
mission Limp Home Mode will be engaged. In
this mode, the transmission will remain in the
current gear (3.6L and 3.0L Diesel engine) or in
direct gear (5.7L engine) until the vehicle is
brought to a stop.To reset the transmission, use the following
procedure:
1. Stop the vehicle.
2. Move the shift lever into the PARK position.
3. Turn the engine off, and be sure to turn the
ignition switch to the LOCK position.
4. Wait approximately 10 seconds, then restart
the engine.
5. Move the shift lever to the desired gear
range.
If the problem is no longer detected, the trans-
mission will return to normal operation. If the
problem persists, PARK, REVERSE, and NEU-
TRAL will continue to operate. Only second
gear (3.6L and 3.0L Diesel engine) or third gear
(5.7L engine) will be available in the DRIVE
position. Have the transmission checked at
your authorized dealer as soon as possible.
Torque Converter Clutch
A feature, designed to improve fuel economy,
has been included in the automatic transmis-
sion on your vehicle. A clutch within the torque
converter engages automatically, at a cali-brated speed, at light throttle. It engages at
higher speeds under heavier acceleration. This
may result in a slightly different feeling or
response during normal operation in high gear.
When the vehicle speed drops below a cali-
brated speed, or during acceleration, the
clutch automatically and smoothly disengages.
NOTE:
•
The torque converter clutch will not en-
gage until the transmission fluid and en-
gine coolant are warm [usually after 1 to
3 miles (1.6 to 4.8 km) of driving]. Because
the engine speed is higher when the
torque converter clutch is not engaged, it
may seem as if the transmission is not
shifting into Overdrive when cold. This is
normal. Manually shifting (using the ERS
shift control) between 4 (direct gear) and
5/D (Overdrive gear) positions will dem-
onstrate that the transmission is able to
shift into and out of Overdrive. For ve-
hicles with 5.7L engines (which have two
Overdrive gears), the transmission may
not shift into the top Overdrive gear (nor-
mal fifth gear) until the transmission fluid
and engine coolant are warm.
209

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