2012 JEEP GRAND CHEROKEE ECO mode

started or the transfer case (if equipped) is
shifted from 4WD LOW range or NEUTRAL
back to 4WD HIGH range, the ESC system will
be in this “On” mode. This mode should be
used for most driving situations. ESC should
only be turned to “Partial Off” mode for specific
reasons as noted below.
Partial Off
This mode is entered by momentarily pressing
the “ESC OFF” switch. When in “Partial Off”
mode, the TCS portion of ESC, except for the
BLD feature described in the TCS section, has
been disabled and the “ESC Off Indicator
Light” will be illuminated. All other stability
features of ESC function normally. This mode is
intended to be used if the vehicle is in deep
snow, sand, or gravel conditions and more
wheel spin than ESC would normally allow is
required to gain traction. To turn ESC on again,
momentarily press the “ESC OFF” switch. This
will restore the normal “ESC On” mode of
operation.
When in “Partial Off” mode, the TCS function-
ality of ESC, (except for the limited slip feature
described in the TCS section), has been dis-
abled and the “ESC Off Indicator Light” will beilluminated. All other stability features of ESC
function normally. When in “Partial Off” mode,
the engine power reduction feature of TCS is
disabled, and the enhanced vehicle stability
offered by the ESC system is reduced.
NOTE:
To improve the vehicle’s traction when driv-
ing with snow chains, or starting off in deep
snow, sand, or gravel, it may be desirable to
switch to the “Partial Off” mode by pressing
the “ESC OFF” switch. Once the situation
requiring ESC to be switched to the “Partial
Off” mode is overcome, turn ESC back on by
momentarily pressing the “ESC OFF”
switch. This may be done while the vehicle
is in motion.
4WD Low Range
Partial Off
This is the normal operating mode for ESC in
4WD LOW range. Whenever the vehicle is
started in 4WD LOW range, or the transfer case
(if equipped) is shifted from 4WD HIGH range
or NEUTRAL to 4WD LOW range, the ESC
system will be in the “Partial Off” mode.
Trailer Sway Control (TSC)TSC uses sensors in the vehicle to recognize
an excessively swaying trailer and will take the
appropriate actions to attempt to stop the sway.
The system may reduce engine power and
apply the brake of the appropriate wheel(s) to
counteract the sway of the trailer. TSC will
become active automatically once an exces-
sively swaying trailer is recognized. No driver
action is required. Note that TSC cannot stop all
trailers from swaying. Always use caution when
towing a trailer and follow the trailer tongue
weight recommendations. Refer to “Trailer Tow-
ing” in “Starting and Operating” for further
ESC OFF Switch
248

HDC control speed. Conversely, if more speed
is desired during HDC control, the accelerator
pedal will increase vehicle speed in the usual
manner. When either the brake or the accelera-
tor is released, HDC will control the vehicle
back to the original set speed.
HDC Operation in 4WD Low Range
To enable HDC, press the HDC switch or put
the Selec-Terrain™ system in the “ROCK”
mode. The HDC icon will be illuminated in the
instrument cluster and HDC will function. If the
vehicle speed goes above 20 mph (32 km/h),
the HDC icon will flash and HDC will not
function. To disable HDC, press the HDC
switch.
4WD Low Range Set Speeds
•1st = 1 mph (1.6 km/h)
• 2nd = 2.5 mph (4 km/h)
• 3rd = 4 mph (6 km/h)
• 4th = 5.5 mph (9 km/h)
• 5th or D (Drive) = 7.5 mph (12 km/h)
• REVERSE = 1 mph (1.6 km/h)
• NEUTRAL = 2.5 mph (4 km/h) •
PARK = HDC will not function
HDC is intended for low speed off-road driv-
ing only. At vehicle speeds above 20 mph
(32 km/h), HDC will no longer function. When
the vehicle speed drops below 20 mph
(32 km/h), HDC function will automatically re-
sume and the vehicle speed will return to the
chosen set speed.
WARNING!
HDC is only intended to assist the driver in
controlling vehicle speed when descending
hills. The driver must remain attentive to the
driving conditions and is responsible for main-
taining a safe vehicle speed.
ESC Activation/Malfunction Indicator
Light and ESC OFF Indicator Light
The “ESC Activation/Malfunction
Indicator Light” in the instrument
cluster will come on when the igni-
tion switch is turned to the ON
position. It should turn off 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
than 30 mph (48 km/h), see your authorized
dealer as soon as possible to have the problem
diagnosed and corrected.
The “ESC Activation/Malfunction Indicator
Light” (located in the instrument cluster) starts
to flash as soon as the tires lose traction and
the ESC system becomes active. The “ESC
Activation/Malfunction Indicator Light” also
flashes when TCS is active. If the “ESC
Activation/Malfunction Indicator Light” begins
to flash during acceleration, ease up on the
accelerator and apply as little throttle as pos-
sible. Be sure to adapt your speed and driving
to the prevailing road conditions.
NOTE:
•
The “ESC Activation/Malfunction Indica-
tor Light” and the “ESC OFF Indicator
Light” come on momentarily each time
the ignition switch is turned ON.
251

Towing TipsBefore setting out on a trip, practice turning,
stopping and backing the trailer in an area
away from heavy traffic.
Automatic Transmission
The DRIVE range can be selected when tow-
ing. However, if frequent shifting occurs while in
this range, the TOW/HAUL mode (if equipped),
or a lower gear range, should be selected.
NOTE:
Using TOW/HAUL mode (if equipped) or se-
lecting a lower gear range (using the Elec-tronic Range Select (ERS) shift control)
while operating the vehicle under heavy op-
erating conditions, will improve perfor-
mance and extend transmission life by re-
ducing excessive shifting and heat buildup.
This action will also provide better engine
braking.
The transmission fluid and filter should be
changed if you REGULARLY tow a trailer for
more than 45 minutes of continuous operation.
Refer to “Maintenance Schedule” for the proper
maintenance intervals.
NOTE:
Check the transmission fluid level before
towing (5.7L engine).
To avoid transmission overheating, when
towing a loaded trailer up steep grades at
low speeds (20 mph (32 km/h) or below),
holding your vehicle in first gear (using the
ERS shift control) is recommended (5.7L
Models Only).
274

HAZARD WARNING FLASHERSThe Hazard Warning flasher switch is located
on the switch bank just above the climate
controls.Press the switch to turn on the Hazard
Warning flasher. When the switch is
activated, all directional turn signals will
flash on and off to warn oncoming
traffic of an emergency. Press the switch a
second time to turn off the Hazard Warning
flashers.
This is an emergency warning system and it
should not be used when the vehicle is in
motion. Use it when your vehicle is disabled
and it is creating a safety hazard for other
motorists.
When you must leave the vehicle to seek assis-
tance, the Hazard Warning flashers will con-
tinue to operate even though the ignition is
placed in the OFF position.
NOTE:
With extended use the Hazard Warning
flashers may wear down your battery.IF YOUR ENGINE OVERHEATSIn any of the following situations, you can
reduce the potential for overheating by taking
the appropriate action.
• On the highways — slow down.
• In city traffic — while stopped, place the
transmission in NEUTRAL, but do not in-
crease the engine idle speed.
NOTE:
There are steps that you can take to slow
down an impending overheat condition:
• If your air conditioner (A/C) is on, turn it
off. The A/C system adds heat to the
engine cooling system and turning the
A/C off can help remove this heat.
• You can also turn the temperature control
to maximum heat, the mode control to
floor and the blower control to high. This
allows the heater core to act as a supple-
ment to the radiator and aids in removing
heat from the engine cooling system.CAUTION!
Driving with a hot cooling system could dam-
age your vehicle. If the temperature gauge
reads HOT (H), pull over and stop the vehicle.
Idle the vehicle with the air conditioner turned
off until the pointer drops back into the normal
range. If the pointer remains on HOT (H), and
you hear continuous chimes, turn the engine
off immediately and call for service.
WARNING!
You or others can be badly burned by hot
engine coolant (antifreeze) or steam from
your radiator. If you see or hear steam coming
from under the hood, do not open the hood
until the radiator has had time to cool. Never
try to open a cooling system pressure cap
when the radiator or coolant bottle is hot.
282

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