air filter JEEP GRAND CHEROKEE 2012 WK2 / 4.G SRT Owners Manual

E-85 Usage In Non-Flex Fuel Vehicles
Non-FFV vehicles are compatible with gasoline contain-
ing 10% ethanol (E10). Gasoline with higher ethanol
content may void the vehicle’s warranty.
If a Non-FFV vehicle is inadvertently fueled with E-85
fuel, the engine will have some or all of these symptoms:
•operate in a lean mode
•OBD II “Malfunction Indicator Light” on
•poor engine performance
•poor cold start and cold drivability
•increased risk for fuel system component corrosion
To fix a Non-FFV vehicle inadvertently fueled once with
E-85 perform the following:
•drain the fuel tank (see your authorized dealer)
•change the engine oil and oil filter
•disconnect and reconnect the battery to reset the
engine controller memory
More extensive repairs will be required for prolonged
exposure to E-85 fuel.
MMT In Gasoline
MMT is a manganese-containing metallic additive that is
blended into some gasoline to increase octane. Gasoline
blended with MMT provides no performance advantage
beyond gasoline of the same octane number without
MMT. Gasoline blended with MMT reduces spark plug
life and reduces emissions system performance in some
vehicles. The manufacturer recommends that gasoline
without MMT be used in your vehicle. The MMT content
of gasoline may not be indicated on the gasoline pump,
therefore, you should ask your gasoline retailer whether
the gasoline contains MMT. It is even more important to
look for gasoline without MMT in Canada, because MMT
5
STARTING AND OPERATING 437

Automatic Transmission
The DRIVE range can be selected when towing. How-
ever, if frequent shifting occurs while in this range, use
the AutoStickfeature to select a lower gear.
NOTE:Using a lower gear while operating the vehicle
under heavy operating conditions will improve perfor-
mance and extend transmission life by reducing exces-
sive shifting and heat build up. This action will also
provide better engine braking.
The automatic transmission fluid and filter should be
changed if you REGULARLY tow a trailer for more than
45 minutes of continuous operation. Refer to the “Main-
tenance Schedule” for the proper maintenance intervals.
Electronic Speed Control – If Equipped

Do not use in hilly terrain or with heavy loads.
When using the speed control, if you experience speed
drops greater than 10 mph (16 km/h), disengage until
you can get back to cruising speed.
Use speed control in flat terrain and with light loads to
maximize fuel efficiency.
Cooling System
To reduce potential for engine and transmission over-
heating, take the following actions:
City Driving
When stopped for short periods of time, shift the trans-
mission into NEUTRAL and increase engine idle speed.
Highway Driving
Reduce speed.
Air Conditioning
Turn off temporarily.
456 STARTING AND OPERATING

MAINTAINING YOUR VEHICLE
CONTENTS
Engine Compartment — 6.4L............. 471
Onboard Diagnostic System – OBD II....... 472
▫Loose Fuel Filler Cap Message........... 472
Emissions Inspection And Maintenance
Programs............................ 473
Replacement Parts..................... 474
Dealer Service........................ 474
Maintenance Procedures................. 475
▫Engine Oil......................... 476▫Engine Oil Filter..................... 479
▫Engine Air Cleaner Filter............... 479
▫Maintenance-Free Battery.............. 480
▫Air Conditioner Maintenance............ 481
▫Body Lubrication.................... 482
▫Windshield Wiper Blades............... 483
▫Adding Washer Fluid................. 485
▫Exhaust System..................... 486
▫Cooling System..................... 489
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ENGINE COMPARTMENT — 6.4L
1 — Totally Integrated Power Module (Fuses) 6 — Air Cleaner Filter
2 — Engine Oil Dipstick 7 — Power Steering Fluid Reservoir
3 — Engine Oil Fill 8 — Coolant Pressure Cap (Radiator)
4 — Brake Fluid Reservoir 9 — Engine Coolant Reservoir
5 — Washer Fluid Reservoir
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MAINTAINING YOUR VEHICLE 471

American Petroleum Institute (API) Engine Oil
Identification Symbol
This symbol means that the oil has
been certified by the American
Petroleum Institute (API). The
manufacturer only recommends
API Certified engine oils.
CAUTION!
Do not use chemical flushes in your engine oil as the
chemicals can damage your engine. Such damage is
not covered by the New Vehicle Limited Warranty.
Engine Oil Viscosity
SAE 5W-40 engine oil is preferred for use in all operating
temperatures.The engine oil filler cap also shows the recommended
engine oil viscosity for your engine. For information on
engine oil filler cap location, refer to “Engine Compart-
ment” in Maintaining Your Vehicle” for further
information.
Synthetic Engine Oils
You may use synthetic engine oils provided the recom-
mended oil quality requirements are met, and the recom-
mended maintenance intervals for oil and filter changes
are followed.
Materials Added To Engine Oil
The manufacturer strongly recommends against the ad-
dition of any additives (other than leak detection dyes) to
the engine oil. Engine oil is an engineered product and
it’s performance may be impaired by supplemental
additives.
478 MAINTAINING YOUR VEHICLE

Disposing Of Used Engine Oil And Oil Filters
Care should be taken in disposing of used engine oil and
oil filters from your vehicle. Used oil and oil filters,
indiscriminately discarded, can present a problem to the
environment. Contact your dealer, service station, or
governmental agency for advice on how and where used
oil and oil filters can be safely discarded in your area.
Engine Oil Filter
The engine oil filter should be replaced with a new filter
at every engine oil change.
Engine Oil Filter Selection
The manufacturer’s engines have a full-flow type oil
filter. Use a filter of this type for replacement. The quality
of replacement filters varies considerably. Only high
quality filters should be used to assure most efficient
service. MOPARengine oil filters are a high quality oil
filter and are recommended.
Engine Air Cleaner Filter
Refer to the “Maintenance Schedule” for the proper
maintenance intervals.
WARNING!
The air cleaner can provide a measure of protection
in the case of engine backfire. Do not remove the air
cleaner unless such removal is necessary for repair or
maintenance. Make sure that no one is near the
engine compartment before starting the vehicle with
the air cleaner removed. Failure to do so can result in
serious personal injury.
Engine Air Cleaner Filter Selection
The quality of replacement engine air cleaner filters
varies considerably. Only high quality filters should be
used to assure most efficient service. MOPARengine air
cleaner filters are a high quality filter and are
recommended.
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MAINTAINING YOUR VEHICLE 479

Automatic Transmission
Selection Of Lubricant
It is important that the proper lubricant is used in the
transmission to assure optimum transmission perfor-
mance. Use only the manufacturer’s recommended trans-
mission fluid. Refer to “Fluids, Lubricants, and Genuine
Parts” in “Maintaining Your Vehicle” for further informa-
tion. It is important that the transmission fluid be main-
tained at the prescribed level using the recommended
fluid.
CAUTION!
Using a transmission fluid other than the manufac-
turer’s recommended fluid may cause deterioration
in transmission shift quality and/or torque converter
shudder. Using a transmission fluid other than the
manufacturer’s recommended fluid will require
more frequent fluid and filter changes. Refer to
“Fluids, Lubricants, and Genuine Parts” in “Main-
taining Your Vehicle” for further information.
Special Additives
Automatic Transmission Fluid (ATF) is an engineered
product and its performance may be impaired by supple-
mental additives. Therefore, do not add any fluid addi-
tives to the transmission. The only exception to this
policy is the use of special dyes to aid in detecting fluid
leaks. In addition, avoid using transmission sealers as
they may adversely affect seals.
498 MAINTAINING YOUR VEHICLE

6,000 Miles (10,000 km) or
6 Months Maintenance Service
Schedule
❏Change the engine oil and engine oil
filter.
Odometer Reading Date
Repair Order # Dealer Code
Signature, Authorized Service Center
12,000 Miles (20,000 km) or 12 Months Maintenance Service
Schedule
❏Change the engine oil and engine oil filter.
❏If using your vehicle for any of the following: Dusty or off-road conditions. Inspect the
engine air cleaner filter; replace if necessary.
❏Inspect the brake linings, replace if necessary.
❏Inspect the CV joints. Perform the first inspection at 12,000 miles (20 000 km) or
12 months.
❏Inspect exhaust system. Perform the first inspection at 12,000 miles (20 000 km) or
12 months.
❏Inspect the front suspension, tie rod ends and boot seals for cracks or leaks and all parts for
damage, wear, improper looseness or end play; replace if necessary.
Odometer Reading Date
Repair Order # Dealer Code
Signature, Authorized Service Center
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S524 MAINTENANCE SCHEDULES

18,000 Miles (30,000 km) or
18 Months Maintenance
Service Schedule
❏Change the engine oil and engine oil
filter.
Odometer Reading Date
Repair Order # Dealer Code
Signature, Authorized Service Center
24,000 Miles (40,000 km) or 24 Months Maintenance Service
Schedule
❏Change the engine oil and engine oil filter.
❏If using your vehicle for any of the following: Dusty or off-road conditions. Inspect the
engine air cleaner filter; replace if necessary.
❏Inspect the brake linings, replace if necessary.
❏Inspect the CV joints.
❏Inspect exhaust system.
❏Inspect the front suspension, tie rod ends and boot seals for cracks or leaks and all parts for
damage, wear, improper looseness or end play; replace if necessary.
Odometer Reading Date
Repair Order # Dealer Code
Signature, Authorized Service Center
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SMAINTENANCE SCHEDULES 525

30,000 Miles (50,000 km) or
30 Months Maintenance
Service Schedule
❏Change the engine oil and engine oil
filter.
❏Replace the engine air cleaner filter.
❏Drain the transfer case and refill.
❏Adjust parking brake on vehicles
equipped with four-wheel disc brakes.
Odometer Reading Date
Repair Order # Dealer Code
Signature, Authorized Service Center
36,000 Miles (60,000 km) or
36 Months Maintenance
Service Schedule
❏Change the engine oil and engine oil
filter.
❏If using your vehicle for any of the
following: Dusty or off-road conditions.
Inspect the engine air cleaner filter;
replace if necessary.
❏Inspect the brake linings, replace if
necessary.
❏
Inspect the front suspension, tie rod ends
and boot seals for cracks or leaks and all
parts for damage, wear, improper
looseness or end play; replace if necessary.
Odometer Reading Date
Repair Order # Dealer Code
Signature, Authorized Service Center
42,000 Miles (70,000 km) or
42 Months Maintenance
Service Schedule
❏Change the engine oil and engine oil
filter.
Odometer Reading Date
Repair Order # Dealer Code
Signature, Authorized Service Center
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S526 MAINTENANCE SCHEDULES