2012 JEEP GRAND CHEROKEE ignition

“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 Park-
Senseis disabled or defective. The ParkSenseswitch
LED will be OFF when the system is enabled.
Service The ParkSenseRear 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 hasdetected 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 ParkSenseSystem
Clean the ParkSensesensors 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 ParkSensesystem operat-
ing properly.
•Jackhammers, large trucks, and other vibrations could
affect the performance of ParkSense.
•When you turn ParkSenseoff, the instrument cluster
will display “PARK ASSIST SYSTEM OFF.” Further-
more, once you turn ParkSenseoff, 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 ParkSenseis 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 ParkSensesensors 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 ParkSensesystem 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.
3
UNDERSTANDING THE FEATURES OF YOUR VEHICLE 235

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 HomeLinkfor 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.3
UNDERSTANDING THE FEATURES OF YOUR VEHICLE 243

Programming A Rolling Code
For programming garage door openers that were manu-
factured after 1995. These garage door openers can be
identified by the “LEARN” or “TRAIN” button located
where the hanging antenna is attached to the garage door
opener. It is NOT the button that is normally used to
open and close the door. The name and color of the
button may vary by manufacturer.
1. Turn the ignition switch to the ON/RUN position.
2. Place the hand-held transmitter 1 to 3 in (3 to 8 cm)
away from the HomeLinkbutton you wish to program
while keeping the HomeLinkindicator light in view.
Training The Garage Door Opener
1 — Door Opener
2 — Training Button 244 UNDERSTANDING THE FEATURES OF YOUR VEHICLE

3. Simultaneously press and hold both the Homelink
button you want to program and the hand-held transmit-
ter button.
4. Continue to hold both buttons and observe the indi-
cator light. The Homelinkindicator will flash slowly
and then rapidly after Homelinkhas received the fre-
quency signal from the hand-held transmitter. Release
both buttons after the indicator light changes from slow
to rapid.
5. At the garage door opener motor (in the garage),
locate the “LEARN” or “TRAINING” button. This can
usually be found where the hanging antenna wire is
attached to the garage door opener/device motor. Firmly
press and release the “LEARN” or “TRAINING” button.
On some garage door openers/devices there may be a
light that blinks when the garage door opener/device is
in the LEARN/TRAIN mode.NOTE:You have 30 seconds in which to initiate the next
step after the LEARN button has been pressed.
6. Return to the vehicle and press the programmed
HomeLinkbutton twice (holding the button for two
seconds each time). If the garage door opener/device
activates, programming is complete.
NOTE:If the garage door opener/device does not
activate, press the button a third time (for two seconds) to
complete the training.
To program the remaining two HomeLinkbuttons,
repeat each step for each remaining button. DO NOT
erase the channels.
Reprogramming A Single HomeLinkButton
To reprogram a channel that has been previously trained,
follow these steps:
1. Turn the ignition switch to the ON/RUN position.
3
UNDERSTANDING THE FEATURES OF YOUR VEHICLE 245

2. Press and hold the desired HomeLinkbutton until
the indicator light begins to flash after 20 seconds.Do not
release the button.
3.Without releasing the buttonproceed with “Program-
ming A Rolling Code” Step 2 and follow all remaining
steps.
Programming A Non-Rolling Code
For programming Garage Door Openers manufactured
before 1995.
1. Turn the ignition switch to the ON/RUN position.
2. Place the hand-held transmitter 1 to 3 in (3 to 8 cm)
away from the HomeLinkbutton you wish to program
while keeping the HomeLinkindicator light in view.
3. Simultaneously press and hold both the Homelink
button you want to program and the hand-held transmit-
ter button.4. Continue to hold both buttons and observe the indi-
cator light. The Homelinkindicator will flash slowly
and then rapidly after Homelinkhas received the fre-
quency signal from the hand-held transmitter. Release
both buttons after the indicator light changes from slow
to rapid.
5. Press and hold the programmed HomeLinkbutton
and observe the indicator light.
•If the indicator light stays on constantly, program-
ming is complete and the garage door/device
should activate when the HomeLinkbutton is
pressed.
•To program the two remaining HomeLinkbuttons,
repeat each step for each remaining button. DO
NOT erase the channels.
246 UNDERSTANDING THE FEATURES OF YOUR VEHICLE

Reprogramming A Single HomeLinkButton
To reprogram a channel that has been previously trained,
follow these steps:
1. Turn the ignition switch to the ON/RUN position.
2. Press and hold the desired HomeLinkbutton until
the indicator light begins to flash after 20 seconds.Do not
release the button.
3.Without releasing the buttonproceed with “Program-
ming A Non-Rolling Code” Step 2 and follow all remain-
ing steps.
Canadian/Gate Operator Programming
For programming transmitters in Canada/United States
that require the transmitter signals to “time-out” after
several seconds of transmission.
Canadian radio frequency laws require transmitter sig-
nals to time-out (or quit) after several seconds of trans-
mission – which may not be long enough for HomeLinkto pick up the signal during programming. Similar to this
Canadian law, some U.S. gate operators are designed to
time-out in the same manner.
It may be helpful to unplug the device during the cycling
process to prevent possible overheating of the garage
door or gate motor.
1. Turn the ignition switch to the ON/RUN position.
2. Place the hand-held transmitter 1 to 3 in (3 to 8 cm)
away from the HomeLinkbutton you wish to program
while keeping the HomeLinkindicator light in view.
3. Continue to press and hold the HomeLinkbutton,
while you press and release (“cycle”), your hand-held
transmitter every two seconds until HomeLinkhas
successfully accepted the frequency signal. The indicator
light will flash slowly and then rapidly when fully
trained.
3
UNDERSTANDING THE FEATURES OF YOUR VEHICLE 247

4. Watch for the HomeLinkindicator to change flash
rates. When it changes, it is programmed. It may take up
to 30 seconds or longer in rare cases. The garage door
may open and close while you are programming.
5. Press and hold the programmed HomeLinkbutton
and observe the indicator light.
•If the indicator light stays on constantly, program-
ming is complete and the garage door/device
should activate when the HomeLinkbutton is
pressed.
•To program the two remaining HomeLinkbuttons,
repeat each step for each remaining button. DO
NOT erase the channels.
If you unplugged the garage door opener/device for
programming, plug it back in at this time.
Reprogramming A Single HomeLinkButton
To reprogram a channel that has been previously trained,
follow these steps:
1. Turn the ignition switch to the ON/RUN position.
2. Press and hold the desired HomeLinkbutton until
the indicator light begins to flash after 20 seconds.Do not
release the button.
3.Without releasing the buttonproceed with
“Canadian/Gate Operator Programming” Step 2 and
follow all remaining steps.
Using HomeLink
To operate, press and release the programmed
HomeLinkbutton. Activation will now occur for the
programmed device (i.e., garage door opener, gate opera-
tor, security system, entry door lock, home/office light-
ing, etc.,). The hand-held transmitter of the device may
also be used at any time.
248 UNDERSTANDING THE FEATURES OF YOUR VEHICLE