2007 JEEP GRAND CHEROKEE Transmission

Display U.S. or Metric?
Pressing the STEP button when in this display selects US
or Metric. The overhead console and instrument panel
displays will be in the selected units.
Auto Door Locks?
When this feature is selected, all doors and the liftgate
lock automatically when the speed of the vehicle reaches
15 mph (25 km/h). Pressing the STEP button when in this
display will select “Yes” or “No.”
Auto Unlock On Exit? (Available Only When the
AUTO DOOR LOCKS Feature is Turned On )
When this feature is selected all the vehicle’s doors will
unlock when the driver’s door is opened if the vehicle isstopped and the transmission is in P (Park) or N (Neu-
tral) position. Pressing the STEP button when in this
display will select “Yes” or “No.”
Remote Unlock Driver’s Door 1st?
When this feature is selected only the driver’s door will
unlock on the first press of the remote keyless entry
unlock button and require a second press to unlock the
remaining locked doors and liftgate. WhenREMOTE
UNLOCK ALL DOORSis selected all of the doors and
the liftgate will unlock at the first press of the remote
keyless entry unlock button. Pressing the STEP button
when in this display will select DRIVER’S DOOR 1ST or
ALL DOORS.
UNDERSTANDING YOUR INSTRUMENT PANEL 187
4

NOTE:To ensure proper compass calibration, make
sure the compass variance is properly set before manu-
ally calibrating the compass. Refer to Variance Map.
To Put Into a Calibration Mode
Start the engine and leave the transmission in the P (Park)
position. Set the display to “Compass/Temperature.”
Press and hold the C/T button for approximately 5
seconds to change the display to compass variance mode;
holding the button for an additional 5 seconds will flash
the “CAL” symbol indicating compass calibration mode.
When the “CAL” indicator is flashing, complete one or
more 360 degree turns, under 5 mph (8 km/h), in an area
free from large metal objects or power lines. The “CAL”
indicator will turn off and the compass will function
normally.Compass Varianceis the difference between magnetic
north and geographic north. In some areas of the country,
the difference between magnetic and geographic north is
great enough to cause the compass to give false readings.
If this occurs, the compass variance must be set according
to the Compass Variance Map.
Compass/Temperature Button
196 UNDERSTANDING YOUR INSTRUMENT PANEL

To set the variance: Turn the ignition ON and set the
display to “Compass/Temperature.” Press the C/T but-
ton for approximately 5 seconds. The last variance zone
number will be displayed. Press and hold the STEP
button for 1 second to select the new variance zone and
press the RESET button to resume normal operation.
RADIO GENERAL INFORMATION
Radio Broadcast Signals
Your new radio will provide excellent reception under
most operating conditions. Like any system, however, car
radios have performance limitations, due to mobile op-
eration and natural phenomena, which might lead you to
believe your sound system is malfunctioning. To help
you understand and save you concern about these “ap-
parent” malfunctions, you must understand a point or
two about the transmission and reception of radio sig-
nals.
UNDERSTANDING YOUR INSTRUMENT PANEL 197
4

Two Types of Signals
There are two basic types of radio signals... AM or
Amplitude Modulation, in which the transmitted sound
causes the amplitude, or height, of the radio waves to
vary... and FM or Frequency Modulation, in which the
frequency of the wave is varied to carry the sound.
Electrical Disturbances
Radio waves may pick up electrical disturbances during
transmission. They mainly affect the wave amplitude,
and thus remain a part of the AM reception. They
interfere very little with the frequency variations that
carry the FM signal.
AM Reception
AM sound is based on wave amplitude, so AM reception
can be disrupted by such things as lightning, power lines
and neon signs.
FM Reception
Because FM transmission is based on frequency varia-
tions, interference that consists of amplitude variations
can be filtered out, leaving the reception relatively clear,
which is the major feature of FM radio.
NOTE:The radio, steering wheel radio controls (if
equipped), and 6 disc CD/DVD changer (if equipped)
will remain active for up to 10 minutes after the ignition
switch has been turned off. Opening a vehicle front door
will cancel this feature.
198 UNDERSTANDING YOUR INSTRUMENT PANEL

When using the air conditioner in extremely heavy traffic
in hot weather especially when towing a trailer, addi-
tional engine cooling may be required. If this situation is
encountered, operate the transmission in a lower gear to
increase engine RPM, coolant flow and fan speed. When
stopped in heavy traffic, it may be necessary to shift into
N (Neutral) and depress the accelerator slightly for fast
idle operation to increase coolant flow and fan speed.
Your air conditioning system is also equipped with an
automatic recirculation system. When the system senses
a heavy load or high heat conditions, it may use partial
Recirculation A/C mode to provide additional comfort.Winter Operation
When operating the system during the winter months,
make sure the air intake, located directly in front of the
windshield, is free of ice, slush, snow, or other obstruc-
tions.
Vacation Storage
Anytime you store your vehicle, or keep it out of service
(i.e. vacation) for two weeks or more, run the air condi-
tioning system at idle for about five minutes in the fresh
air and high blower setting. This will insure adequate
system lubrication to minimize the possibility of com-
pressor damage when the system is started again.
UNDERSTANDING YOUR INSTRUMENT PANEL 243
4

STARTING AND OPERATING
CONTENTS

Starting Procedure......................249
▫Normal Starting — Gasoline Engines.......249
▫If Engine Fails To Start.................249
▫Normal Starting — Diesel Engines.........250

Engine Block Heater — If Equipped.........253

Automatic Transmission..................253
▫Brake/Transmission Interlock System.......254
▫5–Speed Automatic Transmission..........254
▫Gear Ranges.........................255▫Rocking The Vehicle...................261

Four-Wheel Drive Operation...............262
▫Quadra-Trac IOperating Instructions/
Precautions — If Equipped..............262
▫Quadra-Trac IIOperating
Instructions/Precautions — If Equipped.....262
▫Shift Positions........................264
▫Shifting Procedures....................264
▫Quadra-Drive IISystem — If Equipped.....267

On-Road Driving Tips...................268
5

ENGINE BLOCK HEATER — IF EQUIPPED
The engine block heater warms engine coolant and per-
mits quicker starts in cold weather. Connect the cord to a
standard 110-115 volt AC electrical outlet with grounded,
three wire extension cord.
Use the heater when temperatures below 0°F (-18°C) are
expected to last for several days.
The engine block heater cord is located:
•3.7L/4.7L Engine — coiled and strapped to the engine
oil dipstick tube.
•5.7L Engine — bundled and fastened to the injector
harness.
WARNING!
Remember to disconnect the cord before driving.
Damage to the 110-115 volt AC electrical cord could
cause electrocution.
AUTOMATIC TRANSMISSION
CAUTION!
Damage to the transmission may occur if the follow-
ing precautions are not observed:
•Shift into P (Park) only after the vehicle has come
to a complete stop.
•Shift into or out of R (Reverse) only after the
vehicle has come to a complete stop and the
engine is at idle speed.
•Do not shift from R (Reverse), P (Park), or N
(Neutral) into any forward gear when the engine
is above idle speed.
•Before shifting into any gear, make sure your foot
is firmly on the brake pedal.
STARTING AND OPERATING 253
5

WARNING!
It is dangerous to shift the selector lever out of P
(Park) or N (Neutral) if the engine speed is higher
than idle speed. If your foot is not firmly on the
brake pedal, the vehicle could accelerate quickly
forward or in reverse. You could lose control of the
vehicle and hit someone or something. Only shift
into gear when the engine is idling normally and
when your foot is firmly on the brake pedal.
Brake/Transmission Interlock System
This system prevents you from moving the gear shift out
of P (Park) and into any gear unless the brake pedal is
pressed. This system is active only while the ignition
switch is in the ON position. Always depress thebrake
pedal first,before moving the gear selector out of P
(Park).
5–Speed Automatic Transmission
The electronically controlled transmission provides a
precise shift schedule. The transmission electronics are
self-calibrating; therefore, the first few shifts on a new
vehicle, may be somewhat abrupt. This is a normal
condition, and precision shifts will develop within a few
hundred miles.
254 STARTING AND OPERATING