2008 JEEP GRAND CHEROKEE heater

4 - Way Passenger's Power Seat Ð If Equipped
The front passenger's power seat switches are located on
the outboard side of the passenger seat lower side trim.
The bottom switch controls forward/rearward adjust-
ment. The top switch controls the seatback recline adjust-
ment.
NOTE:The 4 - way seat does not have an up/down
adjustment.
Head Restraints
Head restraints can reduce the risk of whiplash injury in
the event of impact from the rear. Adjustable head
restraints should be adjusted so that the upper edge is as
high as practical. The head restraints have a locking
button which must be pushed in to lower the head
restraint to all positions. The restraints may be raised
without pushing in the button.
Front Heated SeatsÐIf Equipped
Heated seats provide comfort and warmth on cold days
and can help soothe sore muscles and backs. The heaters
provide the same heat level for both cushion and back.
The front driver and passenger seats are heated. The
controls for each heater are located near the bottom
Adjustable Head Restraints
UNDERSTANDING THE FEATURES OF YOUR VEHICLE 111
3

center of the instrument panel. After turning on the
ignition, you can choose from High, Low, or Off heat
settings. Amber LEDs on the side of each switch indicate
the level of heat in use. Two LEDs are illuminated for
high, one for low, and none for off. Pressing the switch
once will select high-level heating.Pressing the switch a second time will select low-level
heating. Pressing the switch a third time will shut the
heating elements off.
When high-temperature heating is selected, the heaters
provide a boosted heat level during the first four minutes
of operation after heating is activated. The heat output
then drops to the normal high-temperature level. If
high-level heating is selected, the system will automati-
cally switch to the low level after 30 minutes of continu-
ous operation. At that time, the number of illuminated
LEDs changes from two to one, indicating the change.
Operation on the low setting also turns off automatically
after 30 minutes.
NOTE:Once a heat setting is selected, heat will be felt
within two to five minutes.
Front Heated Seat Switches
112 UNDERSTANDING THE FEATURES OF YOUR VEHICLE

WARNING!
Persons who are unable to feel pain to the skin
because of advanced age, chronic illness, diabetes,
spinal cord injury, medication, alcohol use, exhaus-
tion 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.
Rear Heated Seats Ð If Equipped
On vehicles equipped with rear heated seats, the seats
closest to the doors are heated. The controls for these
seats are located on the rear of the center console.
Two LEDs are illuminated for high, one for low, and none
for off. Pressing the switch once will select high-level
Rear Heated Seat Switches
UNDERSTANDING THE FEATURES OF YOUR VEHICLE 113
3

heating. Pressing the switch a second time will select
low-level heating. Pressing the switch a third time will
shut the heating elements off.
When high-temperature heating is selected, the heaters
provide a boosted heat level during the first four minutes
of operation after heating is activated. The heat output
then drops to the normal high-temperature level. If
high-level heating is selected, the system will automati-
cally switch to the low level after 30 minutes of continu-
ous operation. At that time, the number of illuminated
LEDs changes from two to one, indicating the change.
Operation on the low setting also turns off automatically
after 30 minutes.
NOTE:Once a heat setting is selected, heat will be felt
within two to five minutes.WARNING!
Persons who are unable to feel pain to the skin
because of advanced age, chronic illness, diabetes,
spinal cord injury, medication, alcohol use, exhaus-
tion 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.
114 UNDERSTANDING THE FEATURES OF YOUR VEHICLE

Macrovision
This product incorporates copyright protection technol-
ogy that is protected by U.S. patents and other intellec-
tual property rights. Use of this copyright protection
technology must be authorized by Macrovision, and is
intended for home and other limited viewing uses only
unless otherwise authorized by Macrovision. Reverse
engineering or disassembly is prohibited
DTS
9DTS9and9DTS 2.09are trademarks of Digital Theater
Systems, Inc.
SALES CODE RES Ð AM/FM STEREO RADIO
WITH CD PLAYER (MP3 AUX JACK)
NOTE:The radio sales code is located on the lower right
side of your radio faceplate.
Operating Instructions - Radio Mode
NOTE:The ignition switch must be in the ON or ACC
position to operate the radio.
RES Radio (Non-Satellite Model Shown - With Satellite
Similar)
228 UNDERSTANDING YOUR INSTRUMENT PANEL

STARTING AND OPERATING
CONTENTS
mStarting Procedure......................275
NNormal Starting Ð Gasoline Engines.......276
NExtremely Cold Weather (Below220ÉF Or
229ÉC).............................276
NIf Engine Fails To Start.................277
NAfter Starting........................278
NNormal Starting Ð Diesel Engines.........278
mEngine Block Heater Ð If Equipped.........283
mAutomatic Transmission..................284NShift Lock Manual Override Ð If Equipped . . . 284
NBrake/Transmission Interlock System.......285
N5±Speed Automatic Transmission..........285
NGear Ranges.........................286
NRocking The Vehicle...................292
mFour-Wheel Drive Operation...............293
NQuadra-Trac ItOperating Instructions/
Precautions Ð If Equipped..............293
NQuadra-Trac IItOperating
Instructions/Precautions Ð If Equipped.....293
5

Normal Starting Ð Gasoline Engines
The gear selector must be in the ªNº (Neutral) or ªPº
(Park) position before you can start the engine. Apply the
brakes before shifting into any driving gear.
NOTE:Normal starting of either a cold or a warm
engine is obtained without pumping or depressing the
accelerator pedal.
Do notpress the accelerator. Use the Fob with Integrated
Key to briefly turn the ignition switch to the START
position and release it as soon as the starter engages. Thestarter motor will continue to run, and it will disengage
automatically when the engine is running. If the engine
fails to start, the starter will disengage automatically in 10
seconds. If this occurs, turn the ignition switch to the
LOCK position, wait 10 to 15 seconds, then repeat the
normal starting procedure.
Extremely Cold Weather (below220ÉF or229ÉC)
To insure reliable starting at these temperatures, use of an
externally powered electric engine block heater (available
from your dealer) is recommended.
276 STARTING AND OPERATING

ENGINE BLOCK HEATER Ð IF EQUIPPED
The engine block heater warms engine coolant and
permits quicker starts in cold weather. Connect the heater
cord to a ground-fault interrupter protected 110-115 volt
AC electrical outlet with a grounded, three-wire exten-
sion cord.
Use the heater when temperatures below 0ÉF (-18ÉC) are
expected to last for several days.
The block heater must be plugged in at least one hour to
have an adequate warming effect on the coolant.The engine block heater cord is located:²3.7L/4.7L Engine Ð coiled and strapped to the engine
oil dipstick tube.
²5.7L Engine Ð bundled and fastened to the injector
harness.
²3.0L Diesel Engine Ð on the passenger side of the
vehicle mounted on a stud between the fresh airbox
and coolant reservoir.
WARNING!
Remember to disconnect the cord before driving.
Damage to the 110-115 volt AC electrical cord could
cause electrocution.
STARTING AND OPERATING 283
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