2012 JEEP GRAND CHEROKEE fuel

Display Fuel Saver — If Equipped
The “ECO” message is located in the Compass/
Temperature display; this message can be turned on or
off. To make your selection, press and release the SELECT
button until a check-mark appears next to the setting,
showing that the setting has been selected.
Keyless Enter-N-Go (Passive Entry)
This feature allows you to lock and unlock the vehicle’s
door(s) without having to press the RKE transmitter lock
or unlock buttons. To make your selection, press and
release the SELECT button until a check-mark appears
next to the feature showing the system has been activated
or the check-mark is removed showing the system has
been deactivated. Refer to “Keyless Enter-N-Go” in
“Things To Know Before Starting Your Vehicle”.
Auto High Beams
(Available with SmartBeam™ Only)
When this feature is selected, the high beam headlights
will deactivate automatically under certain conditions. To
make your selection, press and release the SELECT
button until a check-mark appears next to the feature
showing the system has been activated or the check-mark
is removed showing the system has been deactivated.
Refer to “Lights/SmartBeam™ — If Equipped” in “Un-
derstanding The Features Of Your Vehicle” for further
information.
Wiper Mode — If Equipped
When this feature is selected, the system will automati-
cally activate the windshield wipers if it senses moisture
on the windshield. To make your selection, press and
release the SELECT button until a check-mark appears
next to the feature showing the system has been activated
or the check-mark is removed showing the system has
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UNDERSTANDING YOUR INSTRUMENT PANEL 325

NOTE:
•In Floor, Mix and Defrost modes a small amount of air
will flow through the outboard panel outlets for
occupant comfort.
•The air conditioning compressor operates in Mix,
Defrost, or a blend of these modes, even if the Air
Conditioning (A/C) button is not pressed. This dehu-
midifies the air to help dry the windshield. To improve
fuel economy, use these modes only when necessary.
Recirculation Control Pressing the Recirculation Control button will
put the system in recirculation mode. This can
be used when outside conditions such as
smoke, odors, dust, or high humidity are pres-
ent. Activating recirculation will cause the LED in the
control button to illuminate. NOTE:
•Continuous use of the Recirculation mode may make
the inside air stuffy and window fogging may occur.
Extended use of this mode is not recommended.
•The use of the Recirculation mode in cold or damp
weather could cause windows to fog on the inside,
because of moisture buildup inside the vehicle. Select
the outside air position for maximum defogging.
•The A/C will engage automatically to prevent fogging
when the recirculation button is pressed and the mode
control is set to panel or panel / floor.
•The A/C can be deselected manually without disturb-
ing the mode control selection.
•When the ignition switch is turned to the LOCK
position or the ignition switch START/STOP button is
cycled to OFF, the recirculation feature will be
cancelled.
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UNDERSTANDING YOUR INSTRUMENT PANEL 397

Tires — General Information ............. 487
▫ Tire Pressure ....................... 487
▫ Tire Inflation Pressures ................ 488
▫ Tire Pressures For High Speed Operation . . . 490
▫ Radial-Ply Tires ..................... 490
▫ Spare Tire Matching Original Equipped Tire
And Wheel – If Equipped .............. 490
▫ Compact Spare Tire – If Equipped ........ 491
▫ Full Size Spare – If Equipped ............ 492
▫ Limited-Use Spare – If Equipped ......... 492
▫ Tire Spinning ....................... 493
▫ Tread Wear Indicators ................. 494
▫ Life Of Tire ........................ 494 ▫
Replacement Tires .................... 495
 Tire Chains (Traction Devices) ............. 496
 Snow Tires .......................... 498
 Tire Rotation Recommendations ........... 498
 Tire Pressure Monitor System (TPMS) ....... 499
▫ Base System ........................ 502
▫ Premium System – If Equipped .......... 504
▫ General Information .................. 508
 Fuel Requirements ..................... 509
▫ 3.6L Engine ........................ 509
▫ 5.7L Engine ........................ 509
▫ Reformulated Gasoline ................ 510
▫ Gasoline/Oxygenate Blends ............. 510
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▫E-85 Usage In Non-Flex Fuel Vehicles ...... 510
▫ MMT In Gasoline .................... 511
▫ Materials Added To Fuel ............... 512
▫ Fuel System Cautions ................. 512
▫ Carbon Monoxide Warnings ............ 513
 Flexible Fuel (3.6L Engine Only) —
If Equipped .......................... 513
▫ E-85 General Information ............... 513
▫ Ethanol Fuel (E-85) ................... 515
▫ Fuel Requirements ................... 515
▫ Selection Of Engine Oil For Flexible Fuel
Vehicles (E-85) And Gasoline Vehicles ...... 516
▫ Starting ........................... 516
▫ Cruising Range ...................... 517 ▫
Replacement Parts ................... 517
▫ Maintenance ........................ 517
 Adding Fuel ......................... 517
▫ Fuel Filler Cap (Gas Cap) .............. 517
▫ Loose Fuel Filler Cap Message ........... 520
 Vehicle Loading ...................... 521
▫ Certification Label ................... 521
 Trailer Towing ........................ 523
▫ Common Towing Definitions ............ 523
▫ Trailer Hitch Classification .............. 528
▫ Trailer Towing Weights
(Maximum Trailer Weight Ratings) ........ 529
▫ Trailer And Tongue Weight ............. 530
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STARTING AND OPERATING 411

•Press the ENGINE START/STOP button a second time
to change the ignition switch to the RUN position
(EVIC displays “IGNITION MODE RUN”),
•Press the ENGINE START/STOP button a third time
to return the ignition switch to the OFF position (EVIC
displays “IGNITION MODE OFF”).
Extreme Cold Weather (Below –20°F Or29°C)
To ensure reliable starting at these temperatures, use of
an externally powered electric engine block heater (avail-
able from your authorized dealer) is recommended.
If Engine Fails To Start
WARNING!
•Never pour fuel or other flammable liquids into
the throttle body air inlet opening in an attempt to
start the vehicle. This could result in a flash fire
causing serious personal injury.
•Do not attempt to push or tow your vehicle to get it
started. Vehicles equipped with an automatic trans-
mission cannot be started this way. Unburned fuel
could enter the catalytic converter and once the
engine has started, ignite and damage the converter
and vehicle. If the vehicle has a discharged battery,
booster cables may be used to obtain a start from a
booster battery or the battery in another vehicle.
This type of start can be dangerous if done improp-
erly. Refer to “Jump Starting” in “What To Do In
Emergencies” for further information.
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STARTING AND OPERATING 417

Clearing A Flooded Engine
(Using ENGINE START/STOP Button)
If the engine fails to start after you have followed the
“Normal Starting” or “Extreme Cold Weatherproce-
dures, it may be flooded. To clear any excess fuel, press
and hold the brake pedal, push the accelerator pedal all
the way to the floor and hold it, then press and release the
ENGINE START/STOP button once. The starter motor
will engage automatically, run for 10 seconds, and then
disengage. Once this occurs, release the accelerator pedal
and the brake pedal, wait 10 to 15 seconds, then repeat
the “Normal Starting” procedure.
Clearing A Flooded Engine
(Using Fob With Integrated Key)
If the engine fails to start after you have followed the
“Normal Starting” or “Extreme Cold Weather” proce-
dures, it may be flooded. To clear any excess fuel, push
the accelerator pedal all the way to the floor and hold it.
Then, turn the ignition switch to the START position and release it as soon as the starter engages. The starter motor
will disengage automatically in 10 seconds. Once this
occurs, release the accelerator pedal, turn the ignition
switch to the LOCK position, wait 10 to 15 seconds, then
repeat the “Normal Starting” procedure.
CAUTION!
To prevent damage to the starter, wait 10 to 15 sec-
onds before trying again.
After Starting
The idle speed is controlled automatically and it will
decrease as the engine warms up.
ENGINE BLOCK HEATER — IF EQUIPPED
The engine block heater warms the engine, and permits
quicker starts in cold weather. Connect the cord to a
standard 110-115 Volt AC electrical outlet with a
grounded, three-wire extension cord.
418 STARTING AND OPERATING

DRIVE
This range should be used for most city and highway
driving. It provides the smoothest upshifts and down-
shifts, and the best fuel economy. The transmission
automatically upshifts through underdrive first, second,
and third gears, direct fourth gear and overdrive fifth
gear. The DRIVE position provides optimum driving
characteristics under all normal operating conditions.
When frequent transmission shifting occurs (such as
when operating the vehicle under heavy loading condi-
tions, in hilly terrain, traveling into strong head winds, or
while towing heavy trailers), use the Electronic Range
Select (ERS) feature (refer to “Electronic Range Select
(ERS)” in this section) to select a lower gear range. Under
these conditions, using a lower gear range will improve
performance and extend transmission life by reducing
excessive shifting and heat buildup.
Transmission Limp Home Mode
Transmission function is monitored electronically for
abnormal conditions. If a condition is detected that could
result in transmission damage, Transmission Limp Home
Mode is activated. In this mode, the transmission remains
in the current gear until the vehicle is brought to a stop.
After the vehicle has stopped, the transmission will
remain in second gear regardless of which forward gear
is selected. PARK, REVERSE, and NEUTRAL will con-
tinue to operate. The Malfunction Indicator Light (MIL)
may be illuminated. Limp Home Mode allows the vehicle
to be driven to an authorized dealer for service without
damaging the transmission.
In the event of a momentary problem, the transmission
can be reset to regain all forward gears by performing the
following steps:
1. Stop the vehicle.
2. Shift the transmission into PARK.
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STARTING AND OPERATING 427

DRIVE
This range should be used for most city and highway
driving. It provides the smoothest upshifts and down-
shifts, and the best fuel economy. The transmission
automatically upshifts through underdrive first and sec-
ond gears, direct third gear and overdrive fourth and
fifth gears. The DRIVE position provides optimum driv-
ing characteristics under all normal operating conditions.
To access all six available gears, you must use the
Electronic Range Select (ERS) feature (refer to “Electronic
Range Select (ERS)” in this section).
When frequent transmission shifting occurs (such as
when operating the vehicle under heavy loading condi-
tions, in hilly terrain, traveling into strong head winds, or
while towing heavy trailers), use the Electronic Range
Select (ERS) feature (refer to “Electronic Range Select
(ERS)” in this section) to select a lower gear range. Underthese conditions, using a lower gear range will improve
performance and extend transmission life by reducing
excessive shifting and heat buildup.
If the transmission operating temperature exceeds nor-
mal operating limits, the powertrain controller will
modify the transmission shift schedule and expand the
range of torque converter clutch engagement. This is
done to prevent transmission damage due to overheat-
ing.
If the transmission becomes extremely hot, the “Trans-
mission Temperature Warning Light” may illuminate and
the transmission may downshift out of Overdrive until
the transmission cools down.
NOTE:
Use caution when operating a heavily loaded
vehicle at low speeds (such as towing a trailer up a steep
grade, or in stop-and-go traffic) during hot weather. In
these conditions, torque converter slip can impose a
significant additional heat load on the cooling system.
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STARTING AND OPERATING 435