2007 JEEP GRAND CHEROKEE ABS

the door lock plunger located on the inside of the doors
or with the driver’s door key lock cylinder, will not set
the alarm.
To Disarm the System
To disarm the system, use the remote keyless entry
transmitter. Also, using a valid sentry key and moving
the ignition switch to the ON/START position will
disarm the system. If something has triggered the system
in your absence, the horn will sound three times when
you unlock the doors. Check the vehicle for tampering.
The Security Alarm System is designed to protect your
vehicle; however, you can create conditions where the
system will arm unexpectedly. If you remain in the
vehicle and lock the doors with the transmitter, once the
system is armed (after 16 seconds), when you move
inside of the vehicle or you pull the door handle to exit
the alarm will sound. If this occurs, press the “Unlock”
button on the remote keyless entry transmitter to disarmthe system. The Security Alarm System will not disarm
with a manual unlock, either through the lock plunger
located on the inside of the door, or through a key in the
driver’s door key cylinder.ILLUMINATED ENTRY
The interior lights come on when you open any door.
They will remain on for about 30 seconds after all doors
are closed then fade to off.
The lights also will fade to off if you turn on the ignition
after you close all the doors.
REMOTE KEYLESS ENTRY
This system allows you to lock or unlock the doors,
liftgate, or activate the panic alarm from distances up to
about 23 feet (7 meters) using a hand held transmitter.
The transmitter does not need to be pointed at the vehicle
to activate the system.
THINGS TO KNOW BEFORE STARTING YOUR VEHICLE 19
2

▫Daytime Running Lights — If Equipped.....116
▫Lights-On Reminder...................117
▫Fog Lights — If Equipped...............117
▫Turn Signals.........................117
▫High Beam Switch....................118
▫Passing Light........................118
▫Headlight Time Delay..................118
▫Interior Lights.......................118
▫Front Map/Reading Lights..............119

Windshield Wipers And Washers............120
▫Mist...............................121
▫Speed Sensitive Intermittent Wiper System . . . 121
▫Rain Sensing Wipers—If Equipped.........122
Tilt Steering Column....................124

Adjustable Pedals — If Equipped...........124

Electronic Speed Control..................126
▫ToActivate ..........................126
▫To Set At a Desired Speed...............127
▫To Deactivate........................127
▫To Resume Speed.....................127
▫To Vary The Speed Setting...............127
▫To Accelerate For Passing...............128
▫Driving Up Or Down Hills..............128

Electronic Brake Control System............129
▫ABS (Anti-Lock Brake System)............129
▫TCS (Traction Control System)............130
UNDERSTANDING THE FEATURES OF YOUR VEHICLE 69
3

WARNING!
To help keep your vehicle under control, do not use
Speed Control under these conditions:
•When it is not possible to keep your vehicle at a set
speed.
•On slippery roads, such as on snow or ice.
•In heavy or varying traffic volume, in traffic that varies
in speed, or on winding roads.
•Be sure to turn the Speed Control switch to the OFF
position when not in use to avoid accidental engage-
ment.
ELECTRONIC BRAKE CONTROL SYSTEM
Your vehicle is equipped with an advanced electronic
brake control system that includes ABS (Anti-Lock Brake
System), TCS (Traction Control System), BAS (Brake
Assist System), ERM (Electronic Roll Mitigation), and
ESP (Electronic Stability Program). All five systems work
together to enhance vehicle stability and control in vari-
ous driving conditions, and are commonly referred to as
ESP.
ABS (Anti-Lock Brake System)
This system aids the driver in maintaining vehicle control
under adverse braking conditions. The system controls
hydraulic brake pressure to prevent wheel lock-up and
help avoid skidding on slippery surfaces during braking.
Refer to “Anti-Lock Brake System” in Section 5 of this
manual for more information about ABS.
UNDERSTANDING THE FEATURES OF YOUR VEHICLE 129
3

WARNING!
ABS (Anti-Lock Brake System) cannot prevent the
natural laws of physics from acting on the vehicle,
nor can it increase the traction afforded by prevail-
ing road conditions. ABS cannot prevent accidents,
including those resulting from excessive speed in
turns, driving on very slippery surfaces, or hydro-
planing. Only a safe, attentive, and skillful driver
can prevent accidents. The capabilities of an ABS-
equipped vehicle must never be exploited in a reck-
less or dangerous manner which could jeopardize
the user’s safety or the safety of others.
TCS (Traction Control System)
This system monitors the amount of wheel spin of each of
the driven wheels. If wheel spin is detected, brake
pressure is applied to the slipping wheel(s) and engine
power is reduced to provide enhanced acceleration and
stability. A feature of the TCS system functions similar to
a limited slip differential and controls the wheel spin
across a driven axle. If one wheel on a driven axle is
spinning faster than the other, the system will apply the
brake of the spinning wheel. This will allow more engine
torque to be applied to the wheel that is not spinning.
This feature remains active even if TCS and ESP are in
either the “Partial Off” or “Full Off” modes. Refer to “ESP
(Electronic Stability Program)” in this section.
130 UNDERSTANDING THE FEATURES OF YOUR VEHICLE

BAS (Brake Assist System)
The BAS is designed to optimize the vehicle’s braking
capability during emergency braking maneuvers. The
system detects an emergency braking situation by sens-
ing the rate and amount of brake application and then
applies optimum pressure to the brakes. This can help
reduce braking distances. The BAS complements the
anti-lock brake system (ABS). Applying the brakes very
quickly results in the best BAS assistance. To receive the
benefit of the system, you must apply continuous brak-
ing pressure during the stopping sequence. Do not
reduce brake pedal pressure unless braking is no longer
desired. Once the brake pedal is released, the BAS is
deactivated.WARNING!
BAS (Brake Assist System) cannot prevent the natu-
ral laws of physics from acting on the vehicle, nor
can it increase the traction afforded by prevailing
road conditions. BAS cannot prevent accidents, in-
cluding those resulting from excessive speed in
turns, driving on very slippery surfaces, or hydro-
planing. Only a safe, attentive, and skillful driver
can prevent accidents. The capabilities of a BAS-
equipped vehicle must never be exploited in a reck-
less or dangerous manner which could jeopardize
the user’s safety or the safety of others.
UNDERSTANDING THE FEATURES OF YOUR VEHICLE 131
3

engine start. If the bulb does not come on when turning
the key from OFF to ON, have the condition checked
promptly.
Certain conditions such as a loose or missing gas cap,
poor fuel quality, etc. may illuminate the light after
engine start. The vehicle should be serviced if the light
stays on through several of your typical driving cycles. In
most situations the vehicle will drive normally and will
not require towing.
The Malfunction Indicator Light flashes to alert you to
serious conditions that could lead to immediate loss of
power or severe catalytic converter damage. The vehicle
should be serviced as soon as possible if this occurs.
6. Airbag Warning Light
This light turns on and remains on for 6 to 8
seconds as a bulb check when the ignition
switch is first turned ON. If the light is not onduring starting, stays on, or turns on while driving, have
the system inspected by an authorized dealer as soon as
possible.
7. Anti-Lock Brake Warning Light
This light monitors the Anti-Lock Brake System.
The light will turn on when the ignition switch is
turned to the ON position and may stay on for as long as
four seconds.
If the ABS light remains on or turns on while driving, it
indicates that the Anti-Lock portion of the brake system
is not functioning and that service is required. However,
the conventional brake system will continue to operate
normally if the BRAKE warning light is not on.
If the ABS light is on, the brake system should be serviced
as soon as possible to restore the benefits of Anti-Lock
brakes. If the ABS light does not turn on when the
Ignition switch is turned to the ON position, have the
light inspected by an authorized dealer.
176 UNDERSTANDING YOUR INSTRUMENT PANEL

five rocking-motion cycles. This will minimize overheat-
ing 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 R (Reverse), do not spin the wheels faster
than 15 mph (24 km/h), or drivetrain damage may
result.
FOUR-WHEEL DRIVE OPERATION
Quadra-Trac IOperating
Instructions/Precautions — If Equipped
The Quadra-Trac Iis a single speed (HI range only)
transfer case which provides convenient full-time
4–wheel drive. No driver interaction is required. This
transfer case divides engine torque almost evenly with 48percent of engine torque to the front axle and 52 percent
of engine torque to the rear axle. The Brake Traction
Control System (BTC), which combines standard ABS
and Traction Control, provides resistance to any wheel
that is slipping to allow additional torque transfer to
wheels with traction.
NOTE:The Quadra-Trac Isystem is not appropriate
for conditions where LOW range is recommended. Refer
to “Off-Road Driving Tips” in this section.
Quadra-Trac IIOperating
Instructions/Precautions — If Equipped
The Quadra-Trac IItransfer case is fully automatic in the
normal driving 4 HI mode. The Quadra-Trac IItransfer
case provides three mode positions — four wheel drive
high range, neutral, and four wheel drive low range.
This transfer case is fully automatic in the 4 HI mode.
This transfer case divides engine torque almost evenly
with 48 percent of engine torque to the front axle and 52
262 STARTING AND OPERATING

When parking on a hill, turn the front wheels toward the
curb on a downhill grade and away from the curb on an
uphill grade.
The parking brake should always be applied whenever
the driver is not in the vehicle.
ANTI-LOCK BRAKE SYSTEM
The Anti-Lock Brake System (ABS) is designed to aid the
driver in maintaining vehicle control under adverse
braking conditions. The system operates with a separate
computer to modulate hydraulic pressure to prevent
wheel lock-up and help avoid skidding on slippery
surfaces.
All vehicle wheels and tires must be the same size and
type and tires must be properly inflated to produce
accurate signals for the computer.
WARNING!
Significant over or under inflation of tires, or mixing
sizes of tires or wheels on the vehicle can lead to loss
of braking effectiveness.
The Anti-Lock Brake System conducts a low-speed self-
test at about 12 mph (20 km/h). If you have your foot
lightly on the brake while this test is occurring you may
feel slight pedal movement. The movement can be more
apparent on ice and snow. This is normal.
The Anti-Lock Brake System pump motor runs during
the self-test at 12 mph (20 km/h) and during an ABS stop.
The pump motor makes a low humming noise during
operation, which is normal.
274 STARTING AND OPERATING