2015 JEEP GRAND CHEROKEE fuel additives

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. MMT is prohibited in Federal
and California reformulated gasoline.
Materials Added To Fuel
All gasoline sold in the United States is required to
contain effective detergent additives. Use of additional
detergents or other additives is not needed under normal
conditions and they would result in additional cost.
Therefore, you should not have to add anything to the
fuel.
Fuel System Cautions
CAUTION!
Follow these guidelines to maintain your vehicle’s
performance:
•The use of leaded gasoline is prohibited by Federal
law. Using leaded gasoline can impair engine per-
formance and damage the emissions control sys-
tem.
•An out-of-tune engine or certain fuel or ignition
malfunctions can cause the catalytic converter to
overheat. If you notice a pungent burning odor or
some light smoke, your engine may be out of tune
or malfunctioning and may require immediate ser-
vice. Contact your authorized dealer for service
assistance.
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STARTING AND OPERATING 473

CAUTION!(Continued)
•The use of fuel additives, which are now being
sold as octane enhancers, is not recommended.
Most of these products contain high concentrations
of methanol. Fuel system damage or vehicle perfor-
mance problems resulting from the use of such
fuels or additives is not the responsibility of the
manufacturer and may void or not be covered
under the New Vehicle Limited Warranty.
NOTE:Intentional tampering with the emissions control
system can result in civil penalties being assessed against
you.
Carbon Monoxide Warnings
WARNING!
Carbon monoxide (CO) in exhaust gases is deadly.
Follow the precautions below to prevent carbon
monoxide poisoning:
•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
vehicle is stopped in an open area with the engine
running for more than a short period, adjust the
ventilation system to force fresh, outside air into
the vehicle.
•Guard against carbon monoxide with proper main-
tenance. Have the exhaust system inspected every
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474 STARTING AND OPERATING

About Your Brakes........................425
Adaptive Cruise Control (ACC) (Cruise Control) . . .187
Adding Engine Coolant (Antifreeze)............558
Adding Fuel.............................475
Additives, Fuel...........................473
Adjust
Down...............................144
Forward..........................142, 144
Rearward.........................142, 144
Up .................................144
AirBag.................................67
Advance Front Air Bag.................67, 68
Air Bag Components.....................67
Air Bag Operation.......................70
Air Bag Warning Light....................78
Driver Knee Air Bag......................71
Enhanced Accident Response................78
Event Data Recorder (EDR).................81
FrontAirBag...........................67If A Deployment Occurs...................76
Knee Impact Bolsters.....................71
Maintaining Your Air Bag System............80
Side Air Bags...........................71
Transporting Pets.......................106
Air Bag Deployment........................67
Air Bag Light......................78, 109, 286
Air Bag Maintenance.......................80
Air Cleaner, Engine (Engine Air Cleaner Filter). . . .535
Air Conditioner Maintenance.................541
Air Conditioning Filter...............377, 536, 542
Air Conditioning, Operating Tips...........375, 378
Air Conditioning Refrigerant..............541, 542
Air Conditioning System.................374, 541
Air Pressure, Tires.........................449
Alarm
Arm The System........................20
Tamper Alert...........................22
Alarm, Panic.............................25
614 INDEX

Fluids, Lubricants And Genuine Parts...........592
Fog Lights...........................286, 587
Fog Light Service.........................587
Folding Rear Seat.........................156
Forward Collision Warning..................214
Four-Way Hazard Flasher...................500
Freeing A Stuck Vehicle.....................519
Front Axle (Differential).....................564
Fuel...................................471
Adding..............................475
Additives.............................473
Clean Air.............................471
Economy Mode........................405
Ethanol..............................471
Gasoline..............................471
Gauge...............................286
Materials Added........................473
Methanol.............................471
Octane Rating......................471, 592Requirements.......................471, 591
Tank Capacity..........................591
Fueling................................475
Fuses..................................574
Garage Door Opener (HomeLink®).........242, 249
Gasoline, Clean Air........................471
Gasoline (Fuel)...........................471
Gasoline, Reformulated.....................471
Gauges
Coolant Temperature.....................286
Fuel.................................286
Speedometer..........................286
Tachometer............................286
Gear Ranges.............................409
General Information....................210, 470
Glass Cleaning
...........................572
Gross Axle Weight Rating...................482
Gross Vehicle Weight Rating..................481
620 INDEX