2011 JEEP GRAND CHEROKEE overheating

Front Passenger Seat Fold-Flat
Feature — If Equipped
To fold the seatback to the flat load-floor posi-
tion, lift the recline lever and push the seatback
forward. To return to the seating position, raise
the seatback and lock it into place.
Heated Seats — If EquippedOn some models, the front and rear seats may
be equipped with heaters in both the seat
cushions and seatbacks.
WARNING!
•Persons who are unable to feel pain to the
skin because of advanced age, chronic
illness, diabetes, spinal cord injury, medi-
cation, alcohol use, exhaustion or other
physical condition must exercise care when
using the seat heater. It may cause burns
even at low temperatures, especially if
used for long periods of time.
• Do not place anything on the seat that
insulates against heat, such as a blanket or
cushion. This may cause the seat heater to
overheat. Sitting in a seat that has been
overheated could cause serious burns due
to the increased surface temperature of the
seat.
CAUTION!
Repeated overheating of the seat could dam-
age the heating element and/or degrade the
material of the seat. Vehicles Equipped with Remote Start
On models that are equipped with remote start,
the driver’s heated seat can be programmed to
come on during a remote start. Refer to “Re-
mote Starting System — If Equipped” in
“Things to Know Before Starting Your Vehicle”
for further information.
Front Heated Seats
There are two heated seat switches that allow
the driver and passenger to operate the seats
independently. The controls for each heater are
located near the bottom center of the instru-
ment panel (below the climate controls).
You can choose from HIGH, LOW or OFF heat
settings. Amber indicator lights in each switch
indicate the level of heat in use. Two indicator
lights will illuminate for HIGH, one for LOW and
none for OFF.
Press the switch once to select
HIGH-level heating. Press the
switch a second time to select
LOW-level heating. Press the
switch a third time to shut the heat-
ing elements OFF.
Fold-Flat Passenger Seat
97

non-essential electrical devices or increase en-
gine speed (if at idle). If the charging system
light remains on, it means that the vehicle is
experiencing a problem with the charging sys-
tem. Obtain SERVICE IMMEDIATELY. See an
authorized dealer.
If jump starting is required, refer to “Jump
Starting Procedures” in “What To Do In Emer-
gencies”.
•Electronic Throttle Control (ETC) Light
This light informs you of a problem
with the Electronic Throttle Control
(ETC) system. The light will come
on when the ignition is first turned
ON and remain on briefly as a bulb
check. If the light does not come
on during starting, have the system checked by
an authorized dealer.
If a problem is detected, the light will come on
while the engine is running. Cycle the ignition
key when the vehicle has completely stopped
and the shift lever is placed in the PARK
position. The light should turn off.
If the light remains lit with the engine running
your vehicle, will usually be drivable, however, see an authorized dealer for service as soon as
possible. If the light is flashing when the engine
is running, immediate service is required and
you may experience reduced performance, an
elevated/rough idle or engine stall and your
vehicle may require towing.
•
Engine Temperature Warning Light
This light warns of an overheated en-
gine condition. As temperatures rise
and the gauge approaches H,this
indicator will illuminate and a single
chime will sound after reaching a set threshold.
Further overheating will cause the temperature
gauge to pass H,the indicator will continuously
flash and a continuous chime will occur until
the engine is allowed to cool.
If the light turns on while driving, safely pull
over and stop the vehicle. If the A/C system is
on, turn it off. Also, shift the transmission into
NEUTRAL and idle the vehicle. If the tempera-
ture reading does not return to normal, turn the
engine off immediately and call for service.
Refer to “If Your Engine Overheats” in “What To
Do In Emergencies” for more information. •
Transmission Temperature Light
This light indicates that there is
excessive transmission fluid tem-
perature that might occur with se-
vere usage such as trailer towing.
It may also occur when operating
the vehicle in a high torque con-
verter slip condition, such as 4-wheel-drive
operation (e.g., snow plowing, off- road opera-
tion). If this light comes on, stop the vehicle and
run the engine at idle or faster, with the trans-
mission in NEUTRAL until the light goes off.
CAUTION!
Continuous driving with the Transmission
Temperature Indicator illuminated will eventu-
ally cause severe transmission damage or
transmission failure.
170

Overdrive Operation
The automatic transmission includes an elec-
tronically controlled Overdrive (fifth gear for
3.6L and 3.0L Diesel engine, fourth and fifth
gears for 5.7L engine). The transmission will
automatically shift to Overdrive, if the following
conditions are present:
•the shift lever is in DRIVE;
• the engine coolant has reached normal op-
erating temperature;
• vehicle speed is above approximately
30 mph (48 km/h);
• the TOW/HAUL switch has not been acti-
vated;
• transmission has reached normal operating
temperature.
NOTE:
If the vehicle is started in extremely cold
temperatures, the transmission may not
shift into Overdrive and will automatically
select the most desirable gear for operation
at this temperature. Normal operation will
resume when the transmission fluid tem-
perature has risen to a suitable level. Refer to the “Note” under “Torque Converter
Clutch” in this section.
During cold temperature operation you may
notice delayed upshifts, depending on en-
gine and transmission temperature. This
feature improves the warm-up time of the
engine and transmission.
If the transmission temperature gets ex-
tremely hot, the transmission will automati-
cally select the most desirable gear for op-
eration at this temperature. If the
transmission temperature becomes hot
enough, the “TRANSMISSION OVER TEMP”
message may display, and the transmission
may downshift out of Overdrive until the
transmission cools down. After cool down,
the transmission will resume normal opera-
tion.
The transmission will downshift from Overdrive,
to the most desirable gear, if the accelerator
pedal is fully pressed at vehicle speeds above
approximately 35 mph (56 km/h).
When to Use TOW/HAUL Mode –
If Equipped
When driving in hilly areas, towing a trailer,
carrying a heavy load, etc., and frequent trans-
mission shifting occurs, press the TOW/HAUL
switch. This will improve performance and re-
duce the potential for transmission overheating
or failure due to excessive shifting. When oper-
ating in TOW/HAUL mode, the transmission will
shift into direct gear and Overdrive will be
enabled under steady cruise conditions.
TOW/HAUL Switch
208

•If the vehicle has not been driven in sev-
eral days, the first few seconds of opera-
tion after shifting the transmission into
gear may seem sluggish. This is due to
the fluid partially draining from the torque
converter into the transmission. This con-
dition is normal and will not cause dam-
age to the transmission. The torque con-
verter will refill within five seconds after
starting the engine.
Rocking the VehicleIf the vehicle becomes stuck in snow, sand, or
mud, it can often be moved by a rocking
motion. Move the shift lever between DRIVE
and REVERSE, while applying slight pressure
to the accelerator.
NOTE:
The Electronic Stability Control (ESC) and
Traction Control System (TCS) (if equipped)
should be turned OFF before attempting to
rock the vehicle. Refer to “Electronic Brake
Control System” in “Starting and Operating”
for further information. The least amount of accelerator pedal pressure
to maintain the rocking motion, without spinning
the wheels or racing the engine, is most effec-
tive. Racing the engine or spinning the wheels
may lead to transmission overheating and fail-
ure. Allow the engine to idle with the shift lever
in NEUTRAL for at least one minute after every
five rocking-motion cycles. This will minimize
overheating and reduce the risk of transmission
failure during prolonged efforts to free a stuck
vehicle.CAUTION!
When “rocking” a stuck vehicle by moving
between “First” and REVERSE, do not spin
the wheels faster than 15 mph (24 km/h) or
drivetrain damage may result.
FOUR-WHEEL DRIVE OPERATION
Quadra-Trac II
Operating
Instructions/Precautions
The Quadra-Trac II transfer case is fully auto-
matic in the normal driving 4WD AUTO mode.
The Quadra-Trac II transfer case provides
three mode positions:
• 4WD HI
• NEUTRAL
• 4WD LOW
This transfer case is fully automatic in the 4WD
HI mode.
Transfer Case Switch
210

sive 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 help maintain a comfortable operating
temperature for your transmission, it is rec-
ommended that when towing a maximum
loaded trailer up steep grades with switch
backs, you should use the ERS function on
the transmission shifter to lock your vehicle
into first gear (5.7L Models Only).
Electronic Speed Control – If Equipped
Do not use in hilly terrain or with heavy loads.
When using the speed control, if you expe-rience 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
overheating, take the following actions:
City Driving
When stopped for short periods of time, shift
the transmission into NEUTRAL and increase
engine idle speed.
Highway Driving
Reduce speed.
Air Conditioning
Turn off temporarily.
Trailer Hitch Attaching Points
Your vehicle will require extra equipment to tow
a trailer safely and efficiently. The trailer tow
hitch must be attached to your vehicle using
the provided attaching points on the vehicle’s
frame. Refer to the following chart to determine
the accurate attaching points. Other equip-
ment, such as trailer sway controls and braking
equipment, trailer equalizing (leveling) equip-
ment and low profile mirrors, may also be
required or strongly recommended.
Trailer Tow Hitch Attaching Points And Overhang Dimensions
Fixed, Detach
and Retractable Hitch
A 1.85 ft. (565 mm)
B 2.09 ft. (636 mm)
C 2.32 ft. (707 mm)
D 2.4 ft. (733 mm)
E 1.62 ft. (494 mm)
F 1.47 ft. (447 mm)
G (Maximum Overhang) 3.59 ft. (1093 mm)
250

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
flasher.
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 flasher will continue
to operate even though the ignition is placed in
the OFF position.
NOTE:
With extended use the Hazard Warning
flasher 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.
258

Emergency, In Case ofFreeing Vehicle When Stuck ......210
Hazard Warning Flasher ........258
Jacking ..................259
Jump Starting ..............262
Engine Air Cleaner ................276
Break-In Recommendations .......54
Compartment .........270,271,272
Compartment Identification . . 270,271,272
Cooling ..................280
Exhaust Gas Caution .........28,55
Fails to Start ...............202
Flooded, Starting ............202
Fuel Requirements .........240,297
Jump Starting ..............262
Multi-Displacement ...........222
Oil .................. 274,297
Oil Change Interval ...........274
Oil Disposal ...............276
Oil Filter .................276
Oil Selection .......... 274,275,297
Oil Synthetic ...............275
Overheating ...............258
Starting ..................200
Temperature Gauge ...........163
Engine Oil Viscosity ............275 Engine Oil Viscosity Chart
........275
Enhanced Accident Response Feature . . 43
Entry System, Illuminated ..........16
Ethanol ...................241
Event Data Recorder ............45
Exhaust Gas Caution ........28,55,279
Exhaust System ............ 55,278
Exterior Finish Care ............287
Exterior Lights ................57
Filters Air Cleaner ................276
Engine Oil ................276
Finish Care .................287
Flashers ..................258
Hazard Warning .............258
Turn Signal ......... 57,159,294,295
Flipper Glass, Liftgate ...........26
Flooded Engine Starting .........202
Fluid Capacities ..............297
Fluid Leaks .................57
Fluid Level Checks Automatic Transmission ......285,286
Brake ...................283
Engine Oil
................274
Power Steering .............221 Fluids, Lubricants and Genuine Parts . . 298
Fog Light Service
.............294
Fog Lights ............ 109,159,294
Fog Lights, Rear ..............163
Folding Rear Seat .............101
Four Wheel Drive ........... 210,213
Operation ................210
Systems .................210
Four Wheel Drive Operation .......210
Four-Way Hazard Flasher .........258
Freeing A Stuck Vehicle ..........210
Front Axle (Differential) ..........284
Fuel .....................240
Additives .................241
Conserving ...............171
Diesel ..................242
Filler Cap (Gas Cap) ........242,244
Gasoline .................240
Gauge ..................162
Light ...................169
Octane Rating ..............240
Requirements ..............297
Saver Mode ...............171
Tank Capacity ..............297
Fuel System Caution ............243
Fuses ....................290
338

Odometer..................159
Trip ....................159
Off-Pavement Driving (Off-Road) .....218
Off-Road Driving (Off-Pavement) .....218
Oil Change Indicator ...........171
Oil Change Indicator, Reset .......171
Oil, Engine .................274
Capacity .................297
Change Interval .............274
Diesel ..................275
Dipstick .................274
Filter ...................276
Identification Logo ...........274
Materials Added to ...........276
Recommendation .......274,275,297
Synthetic .................275
Viscosity ............... 275,297
Onboard Diagnostic System .......273
Operator Manual (Owner’s Manual) .....6
Outside Rearview Mirrors ..........67
Overdrive ..................208
Overdrive OFF Switch ...........208
Overhead Console .............139
Overheating, Engine .........163,258
Owner’s Manual (Operator Manual) .....6Paint Care
.................287
Paint Damage ...............287
Park Sense System, Rear .........132
Parking Brake ...............222
Personal Settings .............177
Pets ......................54
Pets, Transporting ..............54
Phone, Cellular ...............74
Phone, Hands-Free (uconnect ) ......74
Polishing and Waxing ...........287
Power Door Locks ................20
Lift Gate ..................27
Mirrors ...................68
Outlet (Auxiliary Electrical Outlet) . . . 144
Seats .................. 94,96
Steering ............... 220,221
Sunroof ............... 140,142
Tilt/Telescoping Steering Column . . . 115
Windows ..................24
Pregnant Women and Seat Belts .....36
Preparation for Jacking ..........259
Pretensioners Seat Belts .................34
Programmable Electronic Features ....177Programming Transmitters(Remote Keyless Entry)
...........17
Quadra-Trac ................210
Radial Ply Tires ..............231
Radio Operation ..............185
Radio (Sound Systems) ..........181
Rain Sensitive Wiper System .......114
Rear Axle (Differential) ..........284
Rear Camera ................138
Rear Cross Path ...............72
Rear Cupholder ..............146
Rear Fog Lights ..............163
Rear Park Sense System .........132
Rear Seat, Folding .............101
Rear Window Defroster ..........151
Rear Window Features ..........150
Rear Wiper/Washer ............150
Rearview Mirrors ..............67
Recorder, Event Data ............45
Recreational Towing ............251
Shifting into Transfer Case Neutral
(N) ....................252
Shifting out of Transfer Case Neutral
(N) ....................254
341