JEEP GRAND CHEROKEE 2008 WK / 3.G Owners Manual

Mist
Use this feature when weather conditions make occa-
sional usage of the wipers necessary. Pull down and
release the control lever for a single wiping cycle.
Speed Sensitive Intermittent Wiper System
Use one of the five intermittent wiper speeds when
weather conditions make a single wiping cycle, with a
variable pause between cycles, desirable. Turn the end of
the lever to one of the five delay positions for the desired
delay interval. The delay can be regulated from a maxi-
mum of approximately 18 seconds between cycles, to a
cycle every 1/2 second.
NOTE:The wiper delay times depend on vehicle speed.
If the vehicle is moving less than 10 mph (16 km/h),
delay times will be doubled.
Rain Sensing WipersÐIf Equipped
This feature senses moisture on the windshield and
automatically activates the wipers for the driver. The
feature is especially useful for road splash or overspray
from the windshield washers of the vehicle ahead. Rotate
the end of the multi-function lever to one of five settings
to activate this feature.
The sensitivity of the system can be adjusted with the
multi-function lever. Wiper delay position 1 is the least
sensitive, and wiper delay position 5 is the most sensi-
tive. Setting 3 should be used for normal rain conditions.
Settings 1 and 2 can be used if the driver desires less
wiper sensitivity. Settings 4 and 5 can be used if the
driver desires more sensitivity. Place the wiper switch in
the OFF position when not using the system.
UNDERSTANDING THE FEATURES OF YOUR VEHICLE 131
3

NOTE:
²The rain sensing feature will not operate when the
wiper switch is in the LOW or HIGH speed position.
²The rain sensing feature may not function properly
when ice, or dried salt water is present on the wind-
shield.
²Use of Rain-Xtor products containing wax or silicone
may reduce rain sensor performance.
²A customer programmable feature in the Electronic
Vehicle Information Center (EVIC) allows the Rain
Sense feature to be turned off. Refer to ªElectronic
Vehicle Information Center (EVIC) Ð Customer Pro-
grammable Featuresº in Section 4 of this manual.The rain sensing system has protection features for the
wiper blades and arms, and will not operate under the
following conditions:
²Low Ambient TemperatureÐ When the ignition is
first turned ON, the rain sensing system will not
operate until the wiper switch is moved, vehicle speed
is greater than 0 mph (0 km/h), or the outside tem-
perature is greater than 32ÉF (0ÉC).
²Transmission in N (Neutral) PositionÐ When the
ignition is ON, and the transmission is in the N
(Neutral) position, the rain sensing system will not
operate until the wiper switch is moved, vehicle speed
is greater than 5 mph (8 km/h), or the shift lever is
moved out of the N (Neutral) position.
132 UNDERSTANDING THE FEATURES OF YOUR VEHICLE

TILT/TELESCOPING STEERING COLUMN
This feature allows you to tilt the steering column
upward or downward. It also allows you to lengthen or
shorten the steering column. The tilt/telescoping control
handle is located below the steering wheel at the end of
the steering column.To unlock the steering column, push the control handle
downward (toward the floor). To tilt the steering column,
move the steering wheel upward or downward as de-
sired. To lengthen or shorten the steering column, pull
the steering wheel outward or push it inward as desired.
To lock the steering column in position, push the control
handle upward until fully engaged.
WARNING!
Do not adjust the steering wheel while driving. The
telescoping adjustment must be locked while driv-
ing. Adjusting the steering wheel while driving or
driving without the telescoping adjustment locked
could cause the driver to lose control of the vehicle.
Tilt Steering Column
UNDERSTANDING THE FEATURES OF YOUR VEHICLE 133
3

ADJUSTABLE PEDALS Ð IF EQUIPPED
This feature allows both the brake and accelerator pedals
to move toward the driver to provide improved position
with the steering wheel. The adjustable pedal system is
designed to allow a greater range of driver comfort for
steering wheel tilt and seat position. The position of the
brake and accelerator pedals can be adjusted without
compromising safety or comfort in actuating the pedals.Press the bottom of the switch to move the pedals
rearward (toward the driver).
Press the top of the switch to move the pedals forward
(away from the driver).
²The pedals can be adjusted with the ignition OFF.
²The pedals can be adjusted while driving.
²The pedalscannotbe adjusted when the vehicle is in R
(Reverse) or when the Speed Control is ON. A message
will be displayed in the Electronic Vehicle Information
Center (EVIC) if the pedals are attempted to be ad-
justed when the system is locked out (ªAdjustable
Pedal Disabled Ð Cruise Control Engagedº or ªAd-
justable Pedal Disabled Ð Vehicle In Reverseº). Refer
to Electronic Vehicle Information Center (EVIC) in
Section 4 for more information.
Adjustable Pedal Switch
134 UNDERSTANDING THE FEATURES OF YOUR VEHICLE

CAUTION!
Do not place any article under the adjustable pedal's
or impede its ability to move as it may cause damage
to the pedal controls. Pedal travel may become lim-
ited if movement is stopped by an obstruction in the
adjustable pedal's path.
ELECTRONIC SPEED CONTROL Ð IF EQUIPPED
When engaged, this device takes over accelerator opera-
tions at speeds greater than 25 mph (40 km/h) for 3.7L,
4.7L, and 5.7L engines, and 14 mph (23 km/h) for 3.0L
diesel engines.
Electronic Speed Control Operation
The speed control lever is located on the right side of the
steering wheel.
Electronic Speed Control Switch
UNDERSTANDING THE FEATURES OF YOUR VEHICLE 135
3

To Activate
Push the ON/OFF button. The CRUISE indicator in the
instrument cluster will illuminate. To turn the system
OFF, push the ON/OFF button a second time. The
CRUISE indicator will turn off. The system should be
turned OFF when not in use.
WARNING!
Leaving the 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 ªCANCELº, 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.
136 UNDERSTANDING THE FEATURES OF YOUR VEHICLE

To Resume Speed
To resume a previously set speed, push the ªRESUME
ACCELº lever up and release. Resume can be used at any
speed above 25 mph (40 km/h) for 3.7L, 4.7L, and 5.7L
engines, and 14 mph (23 km/h) for 3.0L diesel engines.
To Vary The Speed Setting
When the speed control is ON, speed can be increased by
pushing up and holding ªRESUME ACCELº. Release the
lever when the desired speed is reached, and the new
speed will be set.
Tapping ªRESUME ACCELº once will result ina1mph
(2 km/h) (3.7L, 4.7L, 5.7L, and 3.0L Diesel models) speed
increase. Each time the lever is tapped, speed increases so
that tapping the lever three times will increase speed by
3 mph (5 km/h) (3.7L, 4.7L, 5.7L, and 3.0L Diesel
models).To decrease speed while speed control is ON, push down
and hold ªSET DECELº. Release the lever when the
desired speed is reached, and the new speed will be set.
Tapping the ªSET DECELº button once will result in a 1
mph (2 km/h) speed decrease. Each time the button is
tapped, speed decreases.
NOTE:The Speed Control system has been designed to
shut down if multiple speed control switch functions are
operated simultaneously in order to ensure proper op-
eration. If this occurs, the system can be reactivated by
pushing the speed control switch ON/OFF button and
re-setting the desired vehicle SET speed.
To Accelerate For Passing
Depress the accelerator as you would normally. When the
pedal is released, the vehicle will return to the set speed.
UNDERSTANDING THE FEATURES OF YOUR VEHICLE 137
3

Using Speed Control On Hills
The automatic transmission may downshift on hills to
maintain the vehicle set speed.
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 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.Also, your vehicle is equipped with TSC (Trailer Sway
Control) and, if it has 4WD with the NV245 two-speed
transfer case, HSA (Hill Start Assist) and HDC (Hill
Descent Control).
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 ªAnti-Lock Brake Systemº in Section 5 of this
manual for more information about ABS.
138 UNDERSTANDING THE FEATURES OF YOUR VEHICLE

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) 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 ªPartial Offº or ªFull Offº modes. Refer to ªESP
(Electronic Stability Program)º in this section for more
information.
UNDERSTANDING THE FEATURES OF YOUR VEHICLE 139
3

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 applycontinuousbrak-
ing pressure during the stopping sequence (do not
ªpumpº the brakes). 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.
140 UNDERSTANDING THE FEATURES OF YOUR VEHICLE