sensor JEEP GRAND CHEROKEE 2010 Owner handbook (in English)

Pressing the RES (+) button once will result in a
1 mph (2 km/h) increase in set speed. Each
subsequent tap of the button results in an
increase of 1 mph (2 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 in a
1 mph (2 km/h) decrease in set speed. Each
subsequent tap of the button results in a de-
crease of 1 mph (2 km/h).
To Accelerate for PassingPress the accelerator as you would normally.
When the pedal is released, the vehicle will
return to the set speed.Using Electronic Speed Control On Hills
The transmission may downshift on hills to
maintain the vehicle set speed.
NOTE:
The Electronic Speed Control system main-
tains 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
Electronic Speed Control.
WARNING!
Electronic Speed Control can be dangerous
where the system cannot maintain a constant
speed. Your vehicle could go too fast for the
conditions, and you could lose control and
have a collision. Do not use Electronic Speed
Control in heavy traffic or on roads that are
winding, icy, snow-covered or slippery.
ADAPTIVE CRUISE CONTROL
(ACC) — IF EQUIPPED
Adaptive Cruise Control (ACC) increases the
driving convenience provided by cruise control
while traveling on highways and major road-
ways. However, it is not a safety system and not
designed to prevent collisions.
ACC will allow you to keep cruise control en-
gaged in light to moderate traffic conditions
without the constant need to reset your cruise
control. ACC utilizes a radar sensor designed
to detect a vehicle directly ahead of you.
NOTE:
•
If the sensor does not detect a vehicle
ahead of you, ACC will maintain a fixed
set speed.
• If the ACC sensor detects a vehicle ahead,
ACC will apply limited braking or accel-
eration (not to exceed the original Set
Speed) automatically to maintain a preset
following distance, while matching the
speed of the vehicle ahead.
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•The ACC system maintains set speed
when driving up hill and down hill. How-
ever, a slight speed change on moderate
hills is normal. In addition, downshifting
may occur while climbing uphill or de-
scending downhill. This is normal opera-
tion and necessary to maintain set speed.
Setting the Following Distance in
ACC
The specified following distance for ACC can
be set by varying the distance setting between
3 (long), 2 (medium), and 1 (short). Using this
distance setting and the vehicle speed, ACC
calculates and sets the distance to the vehicle
ahead. This distance setting displays in the
EVIC. To change the distance setting, press the Dis-
tance button and release. Each time the button
is pressed, the distance setting adjusts be-
tween long, medium, and short.
If there is no vehicle ahead, the vehicle will
maintain the set speed. If a slower moving
vehicle is detected in the same lane, the EVIC
displays the “Sensed Vehicle Indicator” icon,
and the system adjusts vehicle speed auto-
matically to maintain the distance setting, re-
gardless of the set speed.The vehicle will then maintain the set distance
until:
•
The vehicle ahead accelerates to a speed
above the set speed.
• The vehicle ahead moves out of your lane or
view of the sensor.
• The vehicle ahead slows to a speed below
15 mph (24 km/h) and the system automati-
cally disengages itself.
• The distance setting is changed.
• The system disengages. (Refer to the infor-
mation on ACC Activation).
The maximum braking applied by ACC is lim-
ited; however, the driver can always apply the
brakes manually, if necessary.
NOTE:
The brake lights will illuminate whenever the
ACC system applies the brakes.Distance Set
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The EVIC will return to the last display
selected after five seconds of no ACC
display activity.
Display Warnings and Maintenance
“Clean Radar Sensor In Front Of Vehicle”
Warning
The ACC “Clean Radar Sensor In Front Of
Vehicle” warning will display when conditions
temporarily limit system performance. This
most often occurs at times of poor visibility,
such as in snow or heavy rain. The ACC system
may also become temporarily blinded due to
obstructions, such as mud, dirt or ice. In these
cases, the EVIC will display “Clean Radar Sen-
sor In Front Of Vehicle” and the system will
deactivate.NOTE:
If the ACC “Clean Radar Sensor In Front Of
Vehicle” warning is active Normal (Fixed
Speed) Cruise Control is still available. For
additional information refer to “Normal
(Fixed Speed) Cruise Control Mode” in this
section.
If weather conditions are not a factor, the driver
should examine the sensor. It may require
cleaning or removal of an obstruction. The
sensor is located in the center of the vehicle
behind the lower grille.To keep the ACC System operating properly, it
is important to note the following maintenance
items:
•
Always keep the sensor clean. Carefully
wipe the sensor lens with a soft cloth. Be
cautious not to damage the sensor lens.
• Do not remove any screws from the sensor.
Doing so could cause an ACC system mal-
function or failure and require a sensor re-
alignment.
• If the sensor is damaged due to a collision,
see your authorized dealer for service.
• Do not attach or install any accessories near
the sensor, including transparent material or
aftermarket grilles. Doing so could cause an
ACC system failure or malfunction.
When the condition that deactivated the system
is no longer present, the system will return to
the “Adaptive Cruise Control Off” state and will
resume function by simply reactivating it.
NOTE:
Installing a vehicle front-end protector or an
aftermarket grille or modifying the grille is
Clear Radar Sensor Warning
125

not recommended. Doing so may block the
sensor and inhibit ACC operation.
Removing ACC Sensor For Off-Roading
NOTE:
When off-roading, it may be advisable to
remove the ACC sensor. The sensor is lo-
cated behind the front lower grille in the
center of the vehicle. After removing the
lower fascia, you may remove the lower
sensor and bracket assembly.
To remove the sensor follow these instructions:
1. Unplug the connector by depressing the two
tabs on the connector and pulling it out. Do not
pull by the wiring or using any tools to remove
the connector.
2. Remove the wiring christmas tree attach-
ment from the back of the bracket.
3. Remove the two M6 fasteners that connect
the bracket to the bumper.
NOTE:
Do not change the adjustment fasteners or
pull the sensor off of the bracket. Doing so
may misalign the sensor.Store the sensor and bracket assembly in a
safe location. The wiring and connector must
be stowed properly after the sensor and
bracket assembly is removed.
A connector plug is stowed on top of the
bumper beam. Insert the wiring connector into
the connector plug.
NOTE:
When the sensor is removed, Adaptive
Cruise Control, Normal Cruise Control, and
Forward Collision Warning will not be avail-
able. The cluster will display the warning
“ACC/FCW Unavailable - Service Radar Sen-
sor.”
To reinstall the sensor and bracket assembly
reverse the process above. The fastener torque
required to assembly the bracket back to the
beam is 6.6 ft lbs (9 Nm).
ACC Unavailable Warning
If the system turns off, and the EVIC displays
“ACC/FCW Unavailable, Vehicle System Error”,
there may be a temporary malfunction that
limits ACC functionality. Although the vehicle is
still drivable under normal conditions, ACC will
be temporarily unavailable. If this occurs, tryactivating ACC again later, following a key
cycle. If the problem persists, see your autho-
rized dealer.
Service ACC Warning
If the system turns off, and the EVIC displays
“ACC/FCW Unavailable Service Radar Sen-
sor”, it indicates there is an internal system
fault. Although the vehicle is still drivable under
normal conditions, have the system checked
by an authorized dealer.
ACC/FCW Unavailable Warning
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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 and release the ON/OFF button.
• You turn off the ignition.
• You switch off ESC.
• 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 visual warning is displayed on the
EVIC, and an audible warning is also provided.
When the system determines a collision with
the vehicle in front of you is no longer probable,
the warning message will be deactivated.
WARNING!
Forward Collision Warning (FCW) is not in-
tended to avoid a collision on its own. The
driver has the responsibility to avoid a colli-
sion by controlling the vehicle via braking and
steering. Failure to follow this warning could
lead to serious injury or death.
FCW Message
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Changing FCW status (Forward Alert Timing)The FCW feature can be set to Far, set to Near
or turned Off by changing the Forward Alert
Timing in the Electronic Vehicle Information
Center (EVIC) refer to “Electronic Vehicle Infor-
mation Center (EVIC)” in “Understanding Your
Instrument Panel” for further information. The
FCW Status Off, Near or Far will be displayed in
the EVIC.
The default status of FCW is the “Far” setting,
this allows the system to 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.Changing the FCW status to the “Near” setting,
allows the system to warn you of a possible
collision with the vehicle in front of you when
you are much closer. This setting provides less
reaction time than the “Far” setting, which al-
lows for a more dynamic driving experience.
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 dis-
played in the EVIC.
NOTE:
•
The system will retain the last setting
selected by the driver after ignition shut
down.
• FCW will not react to irrelevant objects
such as overhead objects, ground reflec-
tions, objects not in the path of the car,
stationary objects that are far away, on-
coming traffic, or leading vehicles with
the same or higher rate of speed.
• FCW will be disabled like ACC below with
the unavailable screens.
Display Warnings and Maintenance
“Clean Radar Sensor In Front Of Vehicle”
Warning
The FCW “Clean Radar Sensor In Front Of
Vehicle” warning will display when conditions
temporarily limit system performance. This
most often occurs at times of poor visibility,
such as in snow or heavy rain. The FCW system
may also become temporarily blinded due to
obstructions, such as mud, dirt or ice. In these
cases, the EVIC will display “Clean Radar Sen-
sor In Front Of Vehicle” and the system will
deactivate.
Example Only
FCW Off Example
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ParkSenseSensorsThe 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
Park Assist ON
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WARNING ALERTS
Rear Distance (in/cm) Greater than 79 in (200 cm)79-39 in
(200-100 cm) 39-25 in
(100-65 cm) 25-12 in
(65-30 cm) Less Than 12 in
(30 cm)
Front Distance (in/cm) Greater than 47 in (120 cm)47-39 in
(120-100 cm) 39-25 in
(100-65 cm) 25-12 in
(65-30 cm) Less Than 12 in
(30 cm)
Audible Alert (Chime) None Single 1/2 Second ToneSlow Fast Continuous
Display Message Park Assist ON Warning Object DetectedWarning Object
Detected Warning Object
Detected Warning Object
Detected
Arcs None 3 Solid (Continuous)3 Slow Flashing 2 Slow Flashing 1 Slow Flashing
Radio Mute No Yes Yes Yes Yes
NOTE:
ParkSense will MUTE the radio, if on, when
the system is sounding an audio tone.
Enabling and Disabling ParkSense ParkSensecan be enabled and disabled with
a switch located in the switch bank of the
instrument panel or through the Customer-
Programmable Features section of the EVIC.
The available choices are: OFF, Sound Only, or
Sound and Display. Refer to “Electronic Vehicle
Information Center (EVIC)/Personal Settings (Customer-Programmable Features)” in “Un-
derstanding Your Instrument Panel” for further
information.
When the Park Sense switch is
pressed to disable the system, the
instrument cluster will display the
“PARK ASSIST OFF” message for
approximately five seconds. Refer
to “Electronic Vehicle Information
Center (EVIC)” in “Understanding Your Instru-
ment Panel” for further information. When the
shift lever is moved to REVERSE or to DRIVE (at
or below 11 mph/18 km/h) and the system is disabled, the EVIC will display the “PARK AS-
SIST OFF” message for as long as the vehicle is
in REVERSE or for five seconds when the
vehicle is in DRIVE.
The ParkSense
switch LED will be ON when
ParkSense is disabled or defective. The Park-
Sense switch LED will be OFF when the
system is enabled.
The ParkSense system uses four sensors lo-
cated in the rear bumper fascia to scan for
obstacles up to 79 in (200 cm) away from the
rear bumper fascia. The ParkSense system
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uses six sensors located in the front bumper
fascia to scan for obstacles up to 47 in
(120 cm) away from the front bumper fascia.
The warning display located above in the In-
strument Cluster’s EVIC provides both visible
and audible warnings to indicate the range of
the object.
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 “REAR SEN-
SOR BLINDED” message when any of the rear
sensor(s) is blocked by snow, mud, or ice and
the vehicle is shifted into REVERSE or DRIVE.
The instrument cluster will display the “CLEAN
PARK ASSIST SENSORS” message when any
of the 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
“SERVICE 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” message 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) and the rear fascia/bumper
or front fascia/bumper is clean and clear of
snow, ice, mud, dirt or other obstruction, see
your authorized dealer. If “SERVICE PARK AS-
SIST SYSTEM” appears in the EVIC, see your
authorized 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
OFF.” Furthermore, once you turn Park-
Sense 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 OFF” mes-
sage 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.
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•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.
• 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.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.
• 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)
137