2012 JEEP GRAND CHEROKEE sensor

ParkSensewill 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 or DRIVE. If ParkSense is
enabled at one of these shift lever positions, 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 SensorsThe 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 ap-
proximately 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
orientation of the obstacle. The six ParkSense
sensors, located in the
front fascia/bumper, monitor the area in front of
the vehicle that is within the sensors’ field of
view. The sensors can detect obstacles from
approximately 12 in (30 cm) up to 47 in
(120 cm) from the front fascia/bumper in the
horizontal direction, depending on the location,
type and orientation of the obstacle.
ParkSense Warning DisplayThe ParkSense Warning screen will only be
displayed if Sound and Display is selected from
the Customer-Programmable Features section
of the Electronic Vehicle Information Center
(EVIC). Refer to “Electronic Vehicle Information
Center (EVIC)/Personal Settings (Customer-
Programmable Features)” in “Understanding
Your Instrument Panel” for further information.
The ParkSense Warning Display is located in
the Instrument cluster’s EVIC display. It pro-
vides both visual and audible warnings to indi-
cate the distance between the rear fascia/
bumper and/or front fascia/bumper and the
detected obstacle.
ParkSense DisplayThe warning display will turn ON indicating the
system status when the vehicle is in REVERSE
or when the vehicle is in DRIVE and an obstacle
has been detected.
Park Assist Display
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Service The ParkSensePark Assist
System
When the ParkSense Park Assist System is
malfunctioning, the instrument cluster will actu-
ate a single chime, once per ignition cycle. The
instrument cluster will display the “CLEAN
PARK ASSIST SENSORS” message when any
of the rear or front sensor(s) is blocked by
snow, mud, or ice and the vehicle is shifted into
REVERSE or DRIVE.
The instrument cluster will display the “SER-
VICE PARK ASSIST SYSTEM” message when
any of the rear or front sensors are damaged
and require service. When the shift lever is
moved to REVERSE or DRIVE and the system
has detected a faulted condition, the EVIC will
display the “CLEAN PARK ASSIST SENSORS”
or the “SERVICE PARK ASSIST SYSTEM” mes-
sage for as long as the vehicle is in REVERSE
or DRIVE (at speeds less than
11 mph/18 km/h). Under this condition Park-
Sense will not operate. Refer to “Electronic
Vehicle Information Center (EVIC)” in “Under-
standing Your Instrument Panel” for further in-
formation. If the “CLEAN PARK ASSIST SENSORS” mes-
sage appears in the Electronic Vehicle Informa-
tion Center (EVIC) make sure the rear fascia/
bumper and/or front 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 autho-
rized dealer.
Cleaning The ParkSense
SystemClean 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 sen-
sors. Otherwise, you could damage the sen-
sors.
ParkSense System Usage
Precautions
NOTE:
• Ensure that the front and rear bumper are
free of snow, ice, mud, dirt and debris to
keep the ParkSense system operating
properly.
• Jackhammers, large trucks, and other vi-
brations could affect the performance of
ParkSense. •
When you turn ParkSense off, the instru-
ment cluster will display “PARK ASSIST
SYSTEM OFF.” Furthermore, 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 or DRIVE position and Park-
Sense is turned off, the instrument clus-
ter will display “PARK ASSIST SYSTEM
OFF” message for as long as the vehicle
is in REVERSE and when the vehicle is in
DRIVE at or below 11 mph (18 km/h).
• 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 be-
hind or in front of the fascia/bumper, or it
could provide a false indication that an
obstacle is behind or in front of the fascia/
bumper.
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•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, caus-
ing the “SERVICE PARK ASSIST SYS-
TEM” message to be displayed in the
instrument cluster.
• On vehicles equipped with a tailgate,
ParkSense should be disabled when the
tailgate is in the lowered or open position.
A lowered tailgate could provide a false
indication that an obstacle is behind the
vehicle.
CAUTION!
• ParkSense is only a parking aid and it is
unable to recognize every obstacle, includ-
ing small obstacles. Parking curbs might be
temporarily detected or not detected at all.
Obstacles located above or below the sen-
sors will not be detected when they are in
close proximity.
(Continued)
CAUTION!(Continued)
• The vehicle must be driven slowly when
using ParkSense in order to be able to
stop in time when an obstacle is detected.
When backing up, it is recommended that
the driver looks over his/her shoulder when
using ParkSense.
WARNING!
• Drivers must be careful when backing up
even when using the ParkSense Park
Assist System. Always check carefully be-
hind your vehicle, look behind you, and be
sure to check for pedestrians, animals,
other vehicles, obstructions, and blind
spots before backing up. You are respon-
sible for safety and must continue to pay
attention to your surroundings. Failure to
do so can result in serious injury or death.
(Continued)
WARNING!(Continued)
• Before using the ParkSense Park Assist
System, it is strongly recommended that
the ball mount and hitch ball assembly is
disconnected from the vehicle when the
vehicle is not used for towing. Failure to do
so can result in injury or damage to ve-
hicles or obstacles because the hitch ball
will be much closer to the obstacle than the
rear fascia when the warning display turns
on the single flashing arc and sounds the
continuous tone. Also, the sensors could
detect the ball mount and hitch ball assem-
bly, depending on its size and shape, giving
a false indication that an obstacle is behind
the vehicle.
PARKVIEW REAR BACK UP
CAMERA — IF EQUIPPED
Your vehicle may be equipped with the Park-
View Rear Back Up Camera that allows you to
see an on-screen image of the rear surround-
ings of your vehicle whenever the shift lever is
put into REVERSE. The image will be displayed
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As an added safety feature, your vehicle has
been equipped with a Tire Pressure Monitoring
System (TPMS) that illuminates a low tire pres-
sure telltale when one or more of your tires is
significantly under-inflated. Accordingly, when
the low tire pressure telltale illuminates, you
should stop and check your tires as soon as
possible, and inflate them to the proper pres-
sure. Driving on a significantly under-inflated
tire causes the tire to overheat and can lead to
tire failure. Under-inflation also reduces fuel
efficiency and tire tread life, and may affect the
vehicle’s handling and stopping ability.
Please note that the TPMS is not a substitute for
proper tire maintenance, and it is the driver’s
responsibility to maintain correct tire pressure,
even if under-inflation has not reached the level
to trigger illumination of the TPMS low tire
pressure telltale.Your vehicle has also been equipped with a
TPMS malfunction indicator to indicate when
the system is not operating properly. The TPMS
malfunction indicator is combined with the low
tire pressure telltale. When the system detects
a malfunction, the telltale will flash for approxi-
mately one minute and then remain continu-
ously illuminated. This sequence will continue
upon subsequent vehicle start-ups as long as
the malfunction exists. When the malfunction
indicator is illuminated, the system may not be
able to detect or signal low tire pressure as
intended. TPMS malfunctions may occur for a
variety of reasons, including the installation of
replacement or alternate tires or wheels on the
vehicle that prevent the TPMS from functioning
properly. Always check the TPMS malfunction
telltale after replacing one or more tires or
wheels on your vehicle, to ensure that the
replacement or alternate tires and wheels allow
the TPMS to continue to function properly.CAUTION!
The TPMS has been optimized for the original
equipment tires and wheels. TPMS pressures
and warning have been established for the tire
size equipped on your vehicle. Undesirable
system operation or sensor damage may re-
sult when using replacement equipment that
is not of the same size, type, and/or style.
Aftermarket wheels can cause sensor dam-
age. Do not use tire sealant from a can or
balance beads if your vehicle is equipped with
a TPMS, as damage to the sensors may
result.
12. Park/Headlight ON Indicator — If
Equipped This indicator will illuminate when
the park lights or headlights are
turned on.
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Electronic Vehicle Information
Center (EVIC) Displays
When the appropriate conditions exist, the
EVIC displays the following messages:
•Vehicle Not In Park
• Key Left Vehicle
• Key Not Detected
• Service Keyless System
• Service Tire Pressure System
• Service Park Assist System
• Park Assist System Blinded
• Park Assist Disabled
• Front Sensor Blinded
• Rear Sensor Blinded
• Keyfob Battery Low
• Liftglass Open
• Left Front Turn Signal Lamp Out
• Right Front Turn Signal Lamp Out
• Left Rear Turn Signal Lamp Out •
Right Rear Turn Signal Lamp Out
• Check Tire Pressure
• ESC System Off
• Service Blind Spot System
• Blind Spot Detection Unavailable
• Blind Spot System Off
• Blind Spot System Unavailable Sensor
Blocked
• Blind Spot System Unavailable Astronomy
Zone — When the Blind Spot Module senses
a tower on the same frequency that it is
interfering with, it will automatically turn the
Blind Spot System off.
• Normal Cruise Ready — When Adaptive
Cruise Control (ACC) system is turned off
and Normal (Fixed Speed) Cruise Control
mode is available. Refer to “Adaptive Cruise
Control (ACC)” in “Understanding The Fea-
tures Of Your Vehicle” (if equipped).
• Adaptive Cruise Off — When the Adaptive
Cruise Control (ACC) system is turned off. Refer to “Adaptive Cruise Control (ACC)” in
“Understanding The Features Of Your Ve-
hicle” (if equipped).
• ACC Ready — When the ACC system is
activated. Refer to “Adaptive Cruise Control
(ACC)” in “Understanding The Features Of
Your Vehicle” (if equipped).
• ACC Set — After setting the desired speed
in the ACC system. Refer to “Adaptive Cruise
Control (ACC)” in “Understanding The Fea-
tures Of Your Vehicle” (if equipped).
• ACC Cancelled — To disable the ACC sys-
tem. Refer to “Adaptive Cruise Control
(ACC)” in “Understanding The Features Of
Your Vehicle” (if equipped).
• Sensed Vehicle Indicator — The system de-
tects a slower moving vehicle in the same
lane. Refer to “Adaptive Cruise Control
(ACC)” in “Understanding The Features Of
Your Vehicle” (if equipped).
• Driver Override — If you apply the accelera-
tor after setting the desired speed in the
ACC system. Refer to “Adaptive Cruise Con-
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trol (ACC)” in “Understanding The Features
Of Your Vehicle” (if equipped).
• Distance Set — After changing the desired
following distance in the ACC system, this
message will display momentarily. Refer to
“Adaptive Cruise Control (ACC)” in “Under-
standing The Features Of Your Vehicle” (if
equipped).
• Brake — If the ACC system predicts that its
maximum braking level is not sufficient to
maintain the set distance, this message will
flash and a chime will sound while ACC
continues to apply its maximum braking ca-
pacity. When this occurs, you should imme-
diately apply the brakes as needed to main-
tain a safe distance from the vehicle ahead.
Refer to “Adaptive Cruise Control (ACC)” in
“Understanding The Features Of Your Ve-
hicle” (if equipped).
• Clean Radar Sensor in the Front of Vehicle —
If the ACC system deactivates due to perfor-
mance limiting conditions. Refer to “Adap-
tive Cruise Control (ACC)” in “Understanding
The Features Of Your Vehicle” (if equipped). •
ACC/FCW Unavailable Vehicle System Error
— If the ACC system turns off due to a
temporary malfunction that limits functional-
ity. Refer to “Adaptive Cruise Control (ACC)”
in “Understanding The Features Of Your Ve-
hicle” (if equipped).
• ACC/FCW Unavailable Service Radar Sen-
sor — If the ACC system turns off due to an
internal system fault that requires service
from an authorized dealer. Refer to “Adaptive
Cruise Control (ACC)” in “Understanding
The Features Of Your Vehicle” (if equipped).
• Coolant Low
• Service Air Suspension System
• Oil Change Due
• Key In Ignition
• Lights On
• Key In Ignition Lights On
• Ignition Or Accessory On
• Ignition Or Accessory On. Lights On
• Turn Signal On
• Park Assist On •
Warning Object Detected
• Memory 1 Profile Set
• Memory 2 Profile Set
• Memory System Unavailable — Not in Park
• Memory System Unavailable — Seatbelt
buckled
• Memory 1 Profile Recall
• Memory 2 Profile Recall
• Press Brake Pedal And Push Button To Start
• Wrong Key
• Damaged Key
• Key Not Programmed
• Function Currently Unavailable — Power Lift-
gate
• Unlock To Operate — Power Liftgate
• Put In Park To Operate — Power Liftgate
• Automatic High Beams On
• Automatic High Beams Off
• Service Four Wheel Drive System
167

Automatic Compass Calibration
This compass is self-calibrating, which elimi-
nates the need to manually reset the compass.
When the vehicle is new, the compass may
appear erratic and the EVIC will display CAL
until the compass is calibrated. You may also
calibrate the compass by completing one or
more 360–degree turns (in an area free from
large metal or metallic objects) until the CAL
indicator displayed in the EVIC turns off. The
compass will now function normally.NOTE:
A good calibration requires a level surface
and an environment free from large metallic
objects such as buildings, bridges, under-
ground cables, railroad tracks, etc.
Compass Variance
Compass Variance is the difference between
Magnetic North and Geographic North. To
compensate for the differences the variance
should be set for the zone where the vehicle is
driven, per the zone map. Once properly set,
the compass will automatically compensate forthe differences, and provide the most accurate
compass heading. For the most accurate com-
pass performance, the compass must be set
using the following steps.
NOTE:
Keep magnetic materials away from the top
of the instrument panel, such as iPod’s,
Mobile Phones, Laptops and Radar Detec-
tors. This is where the compass module is
located, and it can cause interference with
the compass sensor, and it may give false
readings.
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next to the feature showing the system has
been activated or the check-mark is removed
showing the system has been deactivated.
Forward Collision Warning — If Equipped
The Forward Collision Warning (FCW) feature
can be can be set to Far, set to Near or turned
Off. The default status of FCW is the Far setting.
This means the system will warn you of a
possible collision with the vehicle in front of you
when you are farther away. This gives you the
most reaction time. To change the setting for
more dynamic driving select the Near setting.
This warns you of a possible collision with the
vehicle in front of you when you are much
closer. This allows for a more dynamic driving
experience. To change FCW status press and
release the SELECT button until a check-mark
appears next to the feature showing the system
has been activated or the check-mark is re-
moved showing the system has been deacti-
vated.
For further information, refer to ”Adaptive
Cruise Control (ACC)” in “Understanding The
Features Of Your Vehicle.”Park Assist System
The Rear Park Assist system will scan for
objects behind the vehicle when the transmis-
sion is in the REVERSE position and the vehicle
speed is less than 11 mph (18 km/h). The
system can be enabled with Sound Only,
Sound and Display, or turned OFF through the
EVIC. To make your selection, scroll up or down
until the preferred setting is highlighted, then
press and release the SELECT button until a
check-mark appears next to the setting, show-
ing that the setting has been selected. Refer to
“Rear Park Assist System” in “Understanding
The Features Of Your Vehicle” for system func-
tion and operating information.
Blind Spot Alert — If Equipped
There are three selections when operating
Blind Spot Alert. By pressing and releasing the
SELECT button once, the Blind Spot Alert fea-
ture can be activated in “Blind Spot: Lights
Only” mode. When this mode is selected the
Blind Spot Monitor (BSM) system is activated
and will only show a visual alert in the outside
mirrors. By pressing and releasing the SELECT
button a second time “Blind Spot: Lights/CHM”
mode is activated. In this mode the Blind SpotMonitor (BSM) will show a visual alert in the
outside mirrors as well as an audible alert when
the turn signal is on. When “Blind Spot: Off” is
selected the Blind Spot Monitor (BSM) system
is deactivated.
NOTE:
If your vehicle has experienced any damage
in the area where the sensor is located, even
if the fascia is not damaged, the sensor may
have become misaligned. Take your vehicle
to an authorized dealer to verify sensor
alignment. Having a sensor that is mis-
aligned will result in the BSM not operating
to specification.
Auto Unlock Doors
When this feature is selected, all doors will
unlock when the vehicle is stopped and the
transmission is in the PARK or NEUTRAL posi-
tion and the driver’s door is opened. To make
your selection, press and release the SELECT
button until a check-mark appears next to the
feature showing the system has been acti-
vated, or the check-mark is removed showing
the system has been deactivated.
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