2012 JEEP GRAND CHEROKEE check engine light

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 And 5.7L Engine
The standard power steering system will give
you good vehicle response and increased ease
of maneuverability in tight spaces. The system
will provide mechanical steering capability if
power assist is lost. If for some reason the power assist is inter-
rupted, it will still be possible to steer your
vehicle. Under these conditions, you will ob-
serve a substantial increase in steering effort,
especially at very low vehicle speeds and
during parking maneuvers.
NOTE:
•
Increased noise levels at the end of the
steering wheel travel are considered nor-
mal and do not indicate that there is a
problem with the power steering system.
• Upon initial start-up in cold weather, the
power steering pump may make noise for
a short amount of time. This is due to the
cold, thick fluid in the steering system.
This noise should be considered normal,
and it does not in any way damage the
steering system.WARNING!
Continued operation with reduced power
steering assist could pose a safety risk to
yourself and others. Service should be ob-
tained as soon as possible.
CAUTION!
Prolonged operation of the steering system at
the end of the steering wheel travel will in-
crease the steering fluid temperature and it
should be avoided when possible. Damage to
the power steering pump may occur.
3.0L Diesel EngineYour 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.
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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
dealer for service. It is likely the
vehicle has lost power steering assistance.
Refer to “Electronic Vehicle Information (EVIC)”
in “Understanding Your Instrument Panel” for
further information.
If the “POWER STEERING SYSTEM OVER
TEMP” message and an icon are displayed on
the EVIC screen, it indicates that extreme steer-
ing maneuvers may have occurred, which
caused an over temperature condition in the
power steering system. You will lose power
steering assistance momentarily until the over
temperature condition no longer exists. Once driving conditions are safe, then pull over and
let vehicle idle for a few moments until the light
turns off. Refer to “Electronic Vehicle Informa-
tion (EVIC)” in “Understanding Your Instrument
Panel” for further information.
NOTE:
•
Even if power steering assistance is no
longer operational, it is still possible to
steer the vehicle. Under these conditions
there will be a substantial increase in
steering effort, especially at very low ve-
hicle speeds and during parking maneu-
vers.
• If the condition persists, see your autho-
rized dealer for service.
Power Steering Fluid CheckChecking the power steering fluid level at a
defined service interval is not required. The
fluid should only be checked if a leak is sus-
pected, abnormal noises are apparent, and/or
the system is not functioning as anticipated.
Coordinate inspection efforts through an autho-
rized dealer.
CAUTION!
Do not use chemical flushes in your power
steering system as the chemicals can dam-
age your power steering components. Such
damage is not covered by the New Vehicle
Limited Warranty.
WARNING!
Fluid level should be checked on a level
surface and with the engine off to prevent
injury from moving parts and to ensure accu-
rate fluid level reading. Do not overfill. Use
only manufacturer’s recommended power
steering fluid.
If necessary, add fluid to restore to the proper
indicated level. With a clean cloth, wipe any
spilled fluid from all surfaces. Refer to “Fluids,
Lubricants, and Genuine Parts” in “Maintaining
Your Vehicle” for further information.
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Fluid Level Check – 5.7L Engine
Check the fluid level while the transmission is at
normal operating temperature. This occurs af-
ter at least 15 miles (25 km) of driving. At
normal operating temperature the fluid cannot
be held comfortably between the fingertips.
To check the fluid level properly, the following
procedure must be used:
1. Operate the engine at idle speed and nor-
mal operating temperature.
2. The vehicle must be on level ground.
3. Fully apply the parking brake, and press the
brake pedal.
4. Place the shift lever momentarily in each
gear position ending with the shift lever in
PARK.
5. Remove the dipstick, wipe it clean and
reinsert it until seated.6. Remove the dipstick again, and note the
fluid level on both sides. The fluid level should
be between the “HOT” (upper) reference holes
on the dipstick at normal operating tempera-
ture. The fluid level is only valid if there is a solid
coating of oil on both sides of the dipstick. If the
fluid is low, add as required into the dipstick
tube.
Do not overfill. After adding any quantity
of oil through the oil fill tube, wait a minimum of
two minutes for the oil to fully drain into the
transmission before rechecking the fluid level.
NOTE:
If it is necessary to check the transmission
below the operating temperature, the fluid
level should be between the two “COLD”
(lower) holes on the dipstick with the fluid at
approximately 70°F (21°C) (room tempera-
ture). If the fluid level is correctly estab-
lished at room temperature, it should be
between the “HOT” (upper) reference holes
when the transmission reaches 180°F
(82°C). Remember it is best to check the
level at the normal operating temperature.CAUTION!
Be aware that if the fluid temperature is below
50°F (10°C) it may not register on the dipstick.
Do not add fluid until the temperature is
elevated enough to produce an accurate
reading.
7. Check for leaks. Release parking brake.
To prevent dirt and water from entering the
transmission after checking or replenishing
fluid, make certain that the dipstick cap is
properly reseated. It is normal for the dipstick
cap to spring back slightly from its fully seated
position, as long as its seal remains engaged in
the dipstick tube.
Appearance Care And Protection
From Corrosion
Protection Of Body And Paint From
Corrosion
Vehicle body care requirements vary according
to geographic locations and usage. Chemicals
that make roads passable in snow and ice, and
those that are sprayed on trees and road
315

At Each Stop for Fuel
•Check the engine oil level about 5 minutes
after a fully warmed engine is shut off.
Checking the oil level while the vehicle is on
level ground will improve the accuracy of the
oil level reading. Add oil only when the level
is at or below the ADD or MIN mark.
• Check the windshield washer solvent and
add if required. Once a Month
•
Check tire pressure and look for unusual
wear or damage.
• Inspect the battery and clean and tighten the
terminals as required.
• Check the fluid levels of the coolant reser-
voir, brake master cylinder, power steering
and transmission (5.7L only) and add as
needed.
• Check all lights and other electrical items for
correct operation. At Each Oil Change
•
Change the engine oil filter.
• Inspect the brake hoses and lines.
CAUTION!
Failure to perform the required maintenance
items may result in damage to the vehicle.
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† This maintenance is recommended by the
manufacturer to the owner, but is not required
to maintain emissions warranty.
WARNING!
You can be badly injured working on or around
a motor vehicle. Do only that service work for
which you have the knowledge and the right
equipment. If you have any doubt about your
ability to perform a service job, take your
vehicle to a competent mechanic.
Maintenance Schedule – Diesel
Engine
To help you have the best driving experience
possible, the manufacturer has identified the
specific vehicle maintenance service intervals
that are required to keep your vehicle operating
properly and safely.
The manufacturer recommends that these
maintenance intervals be performed at your
selling dealer. The technicians at your dealer-
ship know your vehicle best, and have access
to factory trained information, genuine
MOPARparts, and specially designed elec- tronic and mechanical tools that can help pre-
vent future costly repairs.
The maintenance intervals shown should be
performed as indicated in this section.
NOTE:
Under no circumstances should oil change
intervals exceed 12,500 miles (20 000 km) or
12 months, whichever comes first.
At Each Stop for Fuel
•
Check the engine oil level about 15 minutes
after a fully warmed engine is shut off.
Checking the oil level while the vehicle is on
level ground will improve the accuracy of the
oil level reading. Add oil only when the level
is at or below the ADD or MIN mark.
• Check the windshield washer solvent and
add if required.
Once a Month
• Check tire pressure and look for unusual
wear or damage.
• Inspect the battery and clean and tighten the
terminals as required. •
Check the fluid levels of the coolant reser-
voir, brake master cylinder, and power steer-
ing and add as needed.
• Check all lights and other electrical items for
correct operation.
At Each Oil Change
• Change the engine oil filter.
• Inspect the brake hoses and lines.
• Inspect for the presence of water in the fuel
filter/water separator unit.
CAUTION!
Failure to perform the required maintenance
items may result in damage to the vehicle.
Required Maintenance Intervals
Refer to the Maintenance Schedules on the
following pages for the required maintenance
intervals.
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Adaptive Cruise Control (ACC)
(Cruise Control)..............117
Adding Fuel ................265
Additives, Fuel ...............264
Air Cleaner, Engine
(Engine Air Cleaner Filter) .........304
Air Conditioner Maintenance .......305
Air Conditioning Refrigerant .......305
Air Conditioning System ..........205
Air Conditioning, Operating Tips .....208
Air Filter ...................304
Air Pressure, Tires .............253
Air Suspension ...............236
Airbag .................. 37,43
Airbag Deployment .............44
Airbag Light ........... 42,45,56,159
Airbag Maintenance ............45
Airbag, Side ............. 39,41,43
Airbag, Window (Side Curtain) . . . 39,41,43
Alarm (Security Alarm) ..........164
Alarm System (Security Alarm) ......16
Alterations/Modifications, Vehicle ......8
Anti-Lock Brake System (ABS) ......245
Anti-Lock Warning Light ..........163
Anti-Theft System .............164
Antifreeze (Engine Coolant) ........326
Appearance Care .............315 Assist, Hill Start
..............249
Auto Down Power Windows ........25
Automatic Dimming Mirror .........67
Automatic Door Locks ...........21
Automatic Headlights ...........105
Automatic Temperature Control (ATC) . . 205
Automatic Transmission .....222,226,313
Adding Fluid ...............315
Fluid and Filter Changes ........313
Fluid Level Check .........314,315
Fluid Type ................313
Special Additives ............314
Autostick ................ 225,230
Auxiliary Electrical Outlet
(Power Outlet) ...............142
Auxiliary Power Outlet ...........142
Battery ...................304
Keyless Transmitter Replacement
(RKE) ...................19
Belts, Seat ................ 30,56
Blind Spot Monitoring ............69
Body Mechanism Lubrication .......305
Brake Assist System ............246
Brake Control System, Electronic .....245
Brake Fluid .................312 Brake System
...............311
Anti-Lock
(ABS) .............245
Fluid Check ...............312
Master Cylinder .............312
Parking ..................244
Warning Light ..............162
Brake/Transmission Interlock .......222
Break-In Recommendations, New
Vehicle ....................55
Bulb Replacement .............322
Bulbs, Light .................58
Calibration, Compass ...........179
Camera, Rear ...............136
Capacities, Fluid ..............326
Caps, Filler Fuel ....................265
Power Steering .............243
Radiator (Coolant Pressure) ......310
Car Washes ................316
Carbon Monoxide Warning .........56
Cargo Area Cover .............148
Cargo Area Features ...........146
Cargo Compartment ............146
Light ...................147
Cargo Light .................147
366

Cargo Tie-Downs.............148
Cellular Phone ............. 74,204
Center High Mounted Stop Light .....325
Chains, Tire ................254
Changing A Flat Tire ...........283
Checking Your Vehicle For Safety .....55
Checks, Safety ...............55
Child Restraint .......... 47,49,51,53
Child Restraint Tether Anchors .......51
Child Safety Locks .............21
Clean Air Gasoline .............263
Climate Control ...............205
Cold Weather Operation .........218
Compact Disc (CD) Maintenance ....204
Compass ..................176
Compass Calibration ...........179
Compass Variance .............177
Computer, Trip/Travel ...........174
Connector UCI ....................183
Universal Consumer Interface (UCI) . . 183
Conserving Fuel ..............173
Console, Overhead ............138
Cooling System ..............308
Adding Coolant (Antifreeze) ......309
Coolant Capacity ............326
Coolant Level ..............310 Disposal of Used Coolant
.......310
Drain, Flush, and Refill .........309
Inspection ................308
Points to Remember ..........311
Pressure Cap ..............310
Radiator Cap ..............310
Selection of Coolant
(Antifreeze) ............. 309,326
Cruise Control (Speed Control) ......117
Cupholders .................144
Customer Assistance ...........356
Data Recorder, Event ............46
Daytime Running Lights ..........107
Defroster, Rear Window ..........150
Defroster, Windshield .........57,207
Diagnostic System, Onboard .......301
Diesel Fuel .................264
Diesel Fuel Requirements .........264
Dipsticks Automatic Transmission .........315
Oil (Engine) ...............302
Power Steering .............243
Disabled Vehicle Towing .........291
Disposal Engine Oil ................304 Door Locks
.................20
Door
Locks, Automatic ...........21
Driving ...................238
Off-Pavement ..............239
Off-Road .................239
Driving to Achieve Maximum Fuel
Economy ..................173
Electric Remote Mirrors ...........68
Electrical Outlet, Auxiliary
(Power Outlet) ...............142
Electronic Brake Control System .....245
Anti-Lock Brake System ........245
Brake Assist System ..........246
Electronic Roll Mitigation ........246
Traction Control System ........246
Electronic Roll Mitigation (ERM) .....246
Electronic Speed Control (Cruise
Control) ................ 115,117
Electronic Stability Control (ESC) .....247
Electronic Vehicle Information Center
(EVIC) ................. 160,164
Emergency, In Case of Freeing Vehicle When Stuck ......289
Hazard Warning Flasher ........282
Jacking ..................283
367

Jump Starting..............287
Engine Air Cleaner ................304
Break-In Recommendations .......55
Compartment .........298,299,300
Compartment Identification . . 298,299,300
Cooling ..................308
Exhaust Gas Caution .........29,56
Fails to Start ...............218
Flooded, Starting ............218
Fuel Requirements .........262,326
Jump Starting ..............287
Multi-Displacement ...........244
Oil .................. 302,326
Oil Change Interval ...........302
Oil Disposal ...............304
Oil Filter .................304
Oil Selection .......... 302,303,326
Oil Synthetic ...............303
Overheating ...............282
Starting ..................216
Temperature Gauge ...........164
Engine Oil Viscosity ............303
Engine Oil Viscosity Chart ........303
Enhanced Accident Response Feature . . 44
Entry System, Illuminated ..........17
Ethanol ...................263 Event Data Recorder
............46
Exhaust Gas Caution ........29,56,307
Exhaust System ............ 56,307
Exterior Finish Care ............316
Exterior Lights ................58
Filters Air Cleaner ................304
Engine Oil ................304
Finish Care .................316
Flashers ..................282
Hazard Warning .............282
Turn Signal ......... 58,160,323,324
Flipper Glass, Liftgate ...........27
Flooded Engine Starting .........218
Fluid Capacities ..............326
Fluid Leaks .................58
Fluid Level Checks Automatic Transmission ....313,314,315
Brake ...................312
Engine Oil ................302
Power Steering .............243
Fluids, Lubricants and Genuine Parts . . 327
Fog Light Service .............323
Fog Lights ............ 108,160,323
Fog

Lights, Rear ..............164 Folding Rear Seat
.............100
Forward Collision Warning . . . 129,170,180
Four Wheel Drive ........... 231,234
Operation ................231
Systems .................231
Four Wheel Drive Operation .......231
Four-Way Hazard Flasher .........282
Freeing A Stuck Vehicle ..........289
Front Axle (Differential) ..........312
Fuel .....................262
Additives .................264
Conserving ................173
Diesel ..................264
Filler Cap (Gas Cap) ........265,266
Gasoline .................262
Gauge ..................163
Light ...................170
Octane Rating ..............262
Requirements ..............326
Saver Mode ...............173
Tank Capacity ..............326
Fuel Optimizer ...............173
Fuel Saver .................173
Fuel System Caution ............265
Fuses ....................318
368