ignition JEEP GRAND CHEROKEE 2012 WK2 / 4.G Service Manual

The sensitivity of the system can be adjusted with the
multifunction lever. Wiper delay position 1 is the least
sensitive, and wiper delay position 4 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 can be used if the driver
desires more sensitivity. Place the wiper switch in the
OFF position when not using the system.
NOTE:
•The Rain Sensing feature will not operate when the
wiper switch is in the low or high-speed position.
•The Rain Sensing feature may not function properly
when ice, or dried salt water is present on the wind-
shield.
•Use of Rain-Xor products containing wax or silicone
may reduce Rain Sensing performance.
•A customer programmable feature in the Electronic
Vehicle Information Center (EVIC) allows the Rain
Sensing feature to be turned off. Refer to “Electronic
Vehicle Information Center (EVIC)/Personal Settings
(Customer-Programmable Features)” in “Understand-
ing Your Instrument Panel” for further information.
The Rain Sensing system has protection features for the
wiper blades and arms, and will not operate under the
following conditions:
•Low Ambient Temperature — 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 32°F (0°C).
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UNDERSTANDING THE FEATURES OF YOUR VEHICLE 193

•Transmission In NEUTRAL Position— When the
ignition is ON, and the transmission is in the NEU-
TRAL 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 NEUTRAL position.
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 lever is
located below the steering wheel at the end of the
steering column. To unlock the steering column, push the lever downward
(toward the floor). To tilt the steering column, move the
steering wheel upward or downward as desired. 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 lever upward until
fully engaged.
Tilt/Telescoping Lever
194 UNDERSTANDING THE FEATURES OF YOUR VEHICLE

To Set A Desired Speed
Turn the Electronic Speed Control ON. When the vehicle
has reached the desired speed, press the SET (-) button
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 button.
To Deactivate
A soft tap on the brake pedal, pushing the CANCEL
button, or normal brake pressure while slowing the
vehicle will deactivate Electronic Speed Control without
erasing the set speed memory. Pressing the ON/OFF
button or turning the ignition switch OFF erases the set
speed memory.
To Resume Speed
To resume a previously set speed, push the RES (+)
button and release. Resume can be used at any speed
above 20 mph (32 km/h).
To Vary The Speed Setting
When the Electronic Speed Control is set, you can in-
crease speed by pushing the RES (+) button. If the button
is continually pressed, the set speed will continue to
increase until the button is released, then the new set
speed will be established.
Pressing the RES (+) button once will result ina1mph
(1.6 km/h) increase in set speed. Each subsequent tap of
the button results in an increase of 1 mph (1.6 km/h).
To decrease speed while the Electronic Speed Control is
set, push the SET (-) button. If the button is continually
held in the SET (-) position, the set speed will continue to
decrease until the button is released. Release the button
when the desired speed is reached, and the new set speed
will be established.
Pressing the SET (-) button once will result ina1mph
(1.6 km/h) decrease in set speed. Each subsequent tap of
the button results in a decrease of 1 mph (1.6 km/h).
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UNDERSTANDING THE FEATURES OF YOUR VEHICLE 199

NOTE:If ACC is resumed or set with the ESC/TCS off,
ESC will automatically be re-engaged.
To Turn Off
The system will turn off and erase the set speed in
memory if:
•You push the ON/OFF button.
•You turn OFF the ignition.
•You switch to Four-Wheel Drive Low.
To Resume Speed
Press the RES +button and release. Then remove your
foot from the accelerator pedal. The EVIC will display the
last set speed.
NOTE: You can resume ACC from a minimum of
20 mph (32 km/h).
WARNING!
The Resume function should only be used if traffic
and road conditions permit. Resuming a set speed
that is too high or too low for prevailing traffic and
road conditions could cause the vehicle to accelerate
or decelerate too sharply for safe operation. Failure to
follow these warnings can result in a collision and
death or serious personal injury.
Adaptive Cruise Control Cancelled
208 UNDERSTANDING THE FEATURES OF YOUR VEHICLE

To Resume
Press the RES+button and then remove your foot from
the accelerator pedal. The EVIC will display the last set
speed.
To Turn Off
The system will turn off and erase the set speed in
memory if:
•You push the ON/OFF button.
•You turn off the ignition.
•You engage Four-Wheel Drive Low.
If the Cruise Control system is turned off and reactivated,
the system will return to the last driver setting (ACC or
Normal Cruise Control).
Forward Collision Warning — If Equipped
Forward Collision Warning (FCW) warns the driver of a
potential collision with the vehicle in front of you and
prompts the driver to take action in order to avoid the
collision.
FCW monitors the information from the forward looking
sensor as well as the Electronic Brake Controller (EBC),
wheel speed sensors, i.e., to calculate a probable rear-end
collision. When the system determines that a rear-end
collision is probable a warning message (both audible
and visual) will be displayed on the EVIC. When the
system determines a collision with the vehicle in front of
you is no longer probable, the warning message will be
deactivated.
224 UNDERSTANDING THE FEATURES OF YOUR VEHICLE

Changing the FCW status to “Off” prevents the system
from warning you of a possible collision with the vehicle
in front of you.
NOTE:In the “Off” setting FCW OFF will be displayed
in the EVIC. NOTE:
•The system will retain the last setting selected by the
driver after ignition shut down.
Example Only
FCW Off Example
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UNDERSTANDING THE FEATURES OF YOUR VEHICLE 227

PARKSENSEREAR PARK ASSIST — IF
EQUIPPED
The ParkSense Rear Park Assist system provides visual
and audible indications of the distance between the rear
fascia and a detected obstacle when backing up, e.g.
during a parking maneuver. Refer to ParkSense System
Usage Precautions for limitations of this system and
recommendations.
ParkSense will retain the last system state (enabled or
disabled) from the last ignition cycle when the ignition is
changed to the ON/RUN position.
ParkSense can be active only when the shift lever is in
REVERSE. If ParkSense is enabled at this shift lever
position, the system will remain active until the vehicle
speed is increased to approximately 11 mph (18 km/h) or
above. The system will become active again if the vehicle
speed is decreased to speeds less than approximately
10 mph (16 km/h).
ParkSense Sensors
The four ParkSense sensors, located in the rear fascia/
bumper, monitor the area behind the vehicle that is
within the sensors’ field of view. The sensors can detect
obstacles from approximately 12 in (30 cm) up to 79 in
(200 cm) from the rear fascia/bumper in the horizontal
direction, depending on the location, type and orienta-
tion of the obstacle.
ParkSense Warning Display
The ParkSense Warning screen will only be displayed if
Sound and Display is selected from the Customer- Pro-
grammable Features section of the Electronic Vehicle
Information Center (EVIC). Refer to “Electronic Vehicle
Information Center (EVIC)/Personal Settings (Customer-
Programmable Features)” in “Understanding Your In-
strument Panel” for further information.
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UNDERSTANDING THE FEATURES OF YOUR VEHICLE 229

“Electronic Vehicle Information Center (EVIC)” in “Un-
derstanding Your Instrument Panel” for further informa-
tion. When the shift lever is moved to REVERSE and the
system is disabled, the EVIC will display the “PARK
ASSIST SYSTEM OFF” message for as long as the vehicle
is in REVERSE.
The ParkSenseswitch LED will be ON when
ParkSense is disabled or defective. The ParkSense 
switch LED will be OFF when the system is enabled.
Service The ParkSense Rear Park Assist System
When the ParkSenseRear Park Assist System is mal-
functioning, the instrument cluster will actuate a single
chime, once per ignition cycle, and it will display the
“CLEAN PARK ASSIST SENSORS” or the “SERVICE
PARK ASSIST SYSTEM” message. Refer to “Electronic
Vehicle Information Center (EVIC)” in “Understanding
Your Instrument Panel” for further information. When
the shift lever is moved to REVERSE and the system has detected a faulted condition, the EVIC will display the
“CLEAN PARK ASSIST SENSORS” or the “SERVICE
PARK ASSIST SYSTEM” message for as long as the
vehicle is in REVERSE. Under this condition, ParkSense
will not operate.
If “CLEAN PARK ASSIST SENSORS” appears in the
Electronic Vehicle Information Center (EVIC) make sure
the rear fascia/bumper is clean and clear of snow, ice,
mud, dirt or other obstruction and then cycle the ignition.
If the message continues to appear see an authorized
dealer.
If “SERVICE PARK ASSIST SYSTEM” appears in the
EVIC, see an authorized dealer.
Cleaning The ParkSense
System
Clean the ParkSense sensors with water, car wash soap
and a soft cloth. Do not use rough or hard cloths. Do not
scratch or poke the sensors. Otherwise, you could dam-
age the sensors.
234 UNDERSTANDING THE FEATURES OF YOUR VEHICLE

ParkSenseSystem Usage Precautions
NOTE:
•Ensure that the rear bumper is free of snow, ice, mud,
dirt and debris to keep the ParkSense system operat-
ing properly.
•Jackhammers, large trucks, and other vibrations could
affect the performance of ParkSense.
•When you turn ParkSense off, the instrument cluster
will display “PARK ASSIST SYSTEM OFF.” Further-
more, once you turn ParkSense off, it remains off
until you turn it on again, even if you cycle the ignition
key.
•When you move the shift lever to the REVERSE
position and ParkSense is turned off, the EVIC will
display “PARK ASSIST SYSTEM OFF” message for as
long as the vehicle is in REVERSE.
•ParkSense, when on, will MUTE the radio when it is
sounding a tone.
•Clean the ParkSense sensors regularly, taking care
not to scratch or damage them. The sensors must not
be covered with ice, snow, slush, mud, dirt or debris.
Failure to do so can result in the system not working
properly. The ParkSense system might not detect an
obstacle behind the fascia/bumper, or it could provide
a false indication that an obstacle is behind the fascia/
bumper.
•Objects such as bicycle carriers, trailer hitches, etc.,
must not be placed within 12 in (30 cm) from the rear
fascia/bumper while driving the vehicle. Failure to do
so can result in the system misinterpreting a close
object as a sensor problem, causing the “SERVICE
PARK ASSIST SYSTEM” message to be displayed in
the EVIC.
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UNDERSTANDING THE FEATURES OF YOUR VEHICLE 235

NOTE:HomeLink is disabled when the Vehicle Secu-
rity Alarm is active.
Before You Begin Programming HomeLink 
Be sure that your vehicle is parked outside of the garage
before you begin programming. For more efficient programming and accurate transmis-
sion of the radio-frequency signal it is recommended that
a new battery be placed in the hand-held transmitter of
the device that is being programmed to the HomeLink

system.
Erase all channels before you begin programming. To
erase the channels place the ignition in the ON/RUN
position and press and hold the two outside HomeLink 
buttons (I and III) for up 20 seconds or until the red
indicator flashes.
NOTE:
•Erasing all channels should only be performed when
programming HomeLink for the first time. Do not
erase channels when programming additional buttons.
•If you have any problems, or require assistance, please
call toll-free 1–800–355–3515 or, on the Internet at
www.HomeLink.com for information or assistance.
HomeLink Buttons/Sunvisor/Headliner
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UNDERSTANDING THE FEATURES OF YOUR VEHICLE 243