brake JEEP WRANGLER 2008 JK / 3.G Owners Manual

Automatic Transmission — If Equipped
1. Place the shift lever in the PARK position.
2. Turn the ignition switch to the ACC position.
3. Push the ignition key inward.4. Turn the ignition key to the LOCK position, and
remove the key.
WARNING!
Leaving unattended children in a vehicle is danger-
ous for a number of reasons. A child or others could
be injured. Children should be warned not to touch
the parking brake, brake pedal, or the shift lever. Do
not leave the key in the ignition. A child could
operate power windows, other controls, or move the
vehicle.
CAUTION!
An unlocked vehicle is an invitation to thieves.
Always remove the key from the ignition, and lock
all doors when leaving the vehicle unattended.Ignition Key Positions
THINGS TO KNOW BEFORE STARTING YOUR VEHICLE 13
2

•Airbag deployment level (if applicable)
•Impact acceleration and angle
•Seat belt status
•Brake status (service and parking brakes)
•Accelerator status (including vehicle speed)
•Engine control status (including engine speed)
•Transmission gear selection
•Cruise control status
•Traction/stability control status
•Tire pressure monitoring system (TPMS) status
Child Restraint
Everyone in your vehicle needs to be buckled up at all
times — babies and children, too. Every state in the
United States and all Canadian provinces require that
small children ride in proper restraint systems. This is the
law, and you can be prosecuted for ignoring it.
Children 12 years and under should ride properly buck-
led up in a rear seat, if available. According to crash
statistics, children are safer when properly restrained in
the rear seats, rather than in the front.
There are different sizes and types of restraints for
children from newborn size to the child almost large
enough for an adult safety belt. Always check the child
seat owner’s manual to ensure you have the correct seat
for your child. Use the restraint that is correct for your
child.
62 THINGS TO KNOW BEFORE STARTING YOUR VEHICLE

▫To Accelerate For Passing ...............105
 Electronic Brake Control System ............105
▫ ABS (Anti-Lock Brake System) ............105
▫ TCS (Traction Control System) ............106
▫ BAS (Brake Assist System) ...............107
▫ ERM (Electronic Roll Mitigation) ..........108
▫ ESP (Electronic Stability Program) .........109
▫ ESP/BAS Warning Light ................115
 Electrical Power Outlet ...................116
▫ Electrical Outlet Use With Engine Off .......117
 Cupholders ...........................117
▫ Front Cupholders .....................117
▫ Rear Cupholders ......................118 
Storage ..............................118
▫ Console Storage Compartment ............118
▫ Rear Storage Compartment ..............119
 Dual Top — If Equipped .................120
▫ Removing The Soft Top .................120
▫ Installing The Soft Top .................122
 Freedom Top Three-Piece Modular Hard Top . . . 125
▫ Front Panel(s) Removal .................126
▫ Front Panel(s) Installation ...............128
▫ Front Panel(s) Installation Only
(With Rear Hard Top Removed) ...........128
▫ Rear Hard Top Removal ................129
▫ Rear Hard Top Installation ...............131
UNDERSTANDING THE FEATURES OF YOUR VEHICLE 81
3

WARNING!
Leaving the Electronic Speed Control System on
when not in use is dangerous. You could accidentally
set the system or cause it to go faster than you want.
You could lose control and have an accident. Always
leave the system OFF when you are not using it.
To Set At A Desired Speed
When the vehicle has reached the desired speed, press
down on the lever and release. Release the accelerator
and the vehicle will operate at the selected speed.
NOTE:The vehicle should be traveling at a steady
speed and on level ground before pressing the SET lever.
To Deactivate
A soft tap on the brake pedal, pulling the speed control
lever towards you, or normal brake or clutch pressure
while slowing the vehicle will deactivate speed control
without erasing the set speed memory. Pressing the
ON/OFF button or turning off the ignition switch erases
the set speed memory.
To Resume Speed
To resume a previously set speed, push the RESUME
ACCEL lever up and release. Resume can be used at any
speed above 20 mph (32 km/h).
To Vary The Speed Setting
When the speed control is ON, speed can be increased by
pushing up and holding RESUME ACCEL. Release the
lever when the desired speed is reached, and the new
speed will be set.
UNDERSTANDING THE FEATURES OF YOUR VEHICLE 103
3

To Accelerate For Passing
Depress the accelerator as you would normally. When the
pedal is released, the vehicle will return to the set speed.
Using Speed Control On Hills
NOTE:The speed control system maintains speed up
and down hills. A slight speed change on moderate hills
is normal.
On steep hills, a greater speed loss or gain and/or more
frequent downshifts (auto transmission only) may occur
so it may be preferable to drive without speed control.
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 of these
systems work together to enhance vehicle stability and
control in various driving conditions.
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 105
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 prevailing
road conditions. ABS 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 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) 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.
106 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, including
those resulting from excessive speed in turns, driving
on very slippery surfaces, or hydroplaning. Only a
safe, attentive, and skillful driver can prevent acci-
dents. The capabilities of a BAS-equipped vehicle
must never be exploited in a reckless or dangerous
manner which could jeopardize the user’s safety or
the safety of others.
UNDERSTANDING THE FEATURES OF YOUR VEHICLE 107
3

ERM (Electronic Roll Mitigation)
This system anticipates the potential for wheel lift by
monitoring the driver ’s steering wheel input and the
speed of the vehicle. When ERM determines that the rate
of change of the steering wheel angle and vehicles speed
are sufficient to potentially cause wheel lift, it applies the
appropriate brake and may reduce engine power to
lessen the chance that wheel lift will occur. ERM will only
intervene during very severe or evasive driving maneu-
vers.
ERM can only reduce the chance of wheel lift occurring
during severe or evasive driving maneuvers. It cannot
prevent wheel lift due to other factors such as road
conditions, leaving the roadway or striking objects or
other vehicles.NOTE:
Anytime the ESP system is in the “Full Off”
mode, ERM is disabled. Refer to ESP (Electronic Stability
Program) for a complete explanation of the available ESP
modes.
WARNING!
Many factors, such as vehicle loading, road condi-
tions and driving conditions, influence the chance
that wheel lift or rollover may occur. ERM cannot
prevent all wheel lift or rollovers, especially those
that involve leaving the roadway or striking objects
or other vehicles. Only a safe, attentive, and skillful
driver can prevent accidents. The capabilities of an
ERM-equipped vehicle must never be exploited in a
reckless or dangerous manner which could jeopar-
dize the user’s safety or the safety of others.
108 UNDERSTANDING THE FEATURES OF YOUR VEHICLE

ESP (Electronic Stability Program)
This system enhances directional control and stability of
the vehicle under various driving conditions. ESP cor-
rects for over/under steering of the vehicle by applying
the brake of the appropriate wheel to assist in counter-
acting the over/under steer condition. Engine power
may also be reduced to help the vehicle maintain the
desired path.
ESP uses sensors in the vehicle to determine the vehicle
path intended by the driver and compares it to the actual
path of the vehicle. When the actual path does not match
the intended path, ESP applies the brake of the appropri-
ate wheel to assist in counteracting the oversteer or
understeer condition.
•Oversteer - when the vehicle is turning more than
appropriate for the steering wheel position.
•Understeer - when the vehicle is turning less than
appropriate for the steering wheel position.
The ESP/TCS Indicator Light (located in the instrument
cluster), starts to flash as soon as the tires lose traction
and the ESP system becomes active. The ESP/TCS Indi-
cator Light also flashes when TCS is active. If the
ESP/TCS Indicator Light begins to flash during accelera-
tion, ease up on the accelerator and apply as little throttle
as possible. Be sure to adapt your speed and driving to
the prevailing road conditions.
UNDERSTANDING THE FEATURES OF YOUR VEHICLE 109
3

16. Before lowering the top, open the swing gate to
prevent possible damage to the rear center high-mounted
brake lamp. Move to the front of the vehicle. Grasp the
side bow behind the header and lift the top, folding it
toward the rear of the vehicle.
17. Tuck the fabric and the check straps between the
bows and as far inward as possible. This will keep anyportion of the top from flapping outside of the vehicle.
When the top is completely down, position the drip rails
so they make a “v-shape”, this prevents damage to the
soft top material.
18. Close front header latches.
19. Remove door frames, if desired. Refer to “Door
Frame” in this section.
UNDERSTANDING THE FEATURES OF YOUR VEHICLE 151
3