Jeep Grand Cherokee SRT (2018 year). Manual

To increase the distance setting, push the Distance Setting
— Increase button and release. Each time the button is
pushed, the distance setting increases by one bar (longer).

To decrease the distance setting, push the Distance Setting
— Decrease button and release. Each time the button is
pushed, the distance setting decreases by one bar (shorter).

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 instrument cluster displays the “Sensed Vehicle

Distance Setting 2 Bars (Medium)

Distance Setting 1 Bar (Short)

STARTING AND OPERATING

273

Indicator” icon, and the system adjusts vehicle speed
automatically to maintain the distance setting, regardless
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 distance setting is changed.
• The system disengages. (Refer to the information on

ACC Activation).

The maximum braking applied by ACC is limited; how-
ever, the driver can always apply the brakes manually, if
necessary.

NOTE:

The brake lights will illuminate whenever the ACC

system applies the brakes.

A Proximity Warning will alert the driver if ACC predicts
that its maximum braking level is not sufficient to maintain
the set distance. If this occurs, a visual alert “BRAKE” will
flash in the instrument cluster display and a chime will
sound while ACC continues to apply its maximum braking
capacity.

NOTE:

The “Brake!” Screen in the instrument cluster

display is a warning for the driver to take action and does
not necessarily mean that the Forward Collision Warning
system is applying the brakes autonomously.

Overtake Aid

When driving with ACC engaged and following a vehicle,
the system will provide an additional acceleration up to the
ACC set speed to assist in passing the vehicle. This
additional acceleration is triggered when the driver utilizes
the left turn signal and will only be active when passing on
the left hand side.

Brake Alert

274

STARTING AND OPERATING

ACC Operation At Stop

If the ACC system brings your vehicle to a standstill while
following a target vehicle, if the target vehicle starts
moving within two seconds of your vehicle coming to a
standstill, your vehicle will resume motion without the
need for any driver action.

If the target vehicle does not start moving within two
seconds of your vehicle coming to a standstill, the ACC
with Stop system will cancel and the brakes will release. A
cancel message will display on the instrument cluster
display and produce a warning chime. Driver intervention
will be required at this moment.

While ACC with Stop is holding your vehicle at a stand-
still, if the driver seatbelt is unbuckled or the driver door is
opened, the ACC with Stop system will cancel and the
brakes will release. A cancel message will display on the
instrument cluster display and produce a warning chime.
Driver intervention will be required at this moment.

WARNING!

When the ACC system is resumed, the driver must
ensure that there are no pedestrians, vehicles or objects

(Continued)

WARNING! (Continued)

in the path of the vehicle. Failure to follow these
warnings can result in a collision and death or serious
personal injury.

Adaptive Cruise Control (ACC) Menu

The instrument cluster display will show the current ACC
system settings. The instrument cluster display is located
in the center of the instrument cluster. The information it
displays depends on ACC system status.

Push the Adaptive Cruise Control (ACC) on/off button
(located on the steering wheel) until one of the following
appears in the instrument cluster display:

Adaptive Cruise Control Off

When ACC is deactivated, the display will read “Adaptive
Cruise Control Off.”

Adaptive Cruise Control Ready

When ACC is activated, but the vehicle speed setting has
not been selected, the display will read “Adaptive Cruise
Control Ready.”

STARTING AND OPERATING

275

Adaptive Cruise Control Set

When the SET (+) or the SET (-) button (located on the
steering wheel) is pushed, the display will read “ACC
SET.”

When ACC is set, the set speed will show in the instrument
cluster display.

The ACC screen may display once again if any ACC
activity occurs, which may include any of the following:
• System Cancel
• Driver Override
• System Off
• ACC Proximity Warning
• ACC Unavailable Warning

• The instrument cluster display will return to the last

display selected after five seconds of no ACC display
activity

Display Warnings And Maintenance

“Wipe Front Radar Sensor In Front Of Vehicle”
Warning

The “ACC/FCW Unavailable Wipe Front Radar Sensor”
warning will display and also a chime will indicate 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 instrument cluster display will
display “ACC/FCW Unavailable Wipe Front Radar Sen-
sor” and the system will deactivate.

The “ACC/FCW Unavailable Wipe Front Radar Sensor”
message can sometimes be displayed while driving in
highly reflective areas (i.e. tunnels with reflective tiles, or
ice and snow). The ACC system will recover after the
vehicle has left these areas. Under rare conditions, when
the radar is not tracking any vehicles or objects in its path
this warning may temporarily occur.

276

STARTING AND OPERATING

NOTE:

If the “ACC/FCW Unavailable Wipe Front Radar

Sensor” 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 malfunction or failure and
require a sensor realignment.

• If the sensor or front end of the vehicle 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 malfunc-
tion.

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:
• If the “ACC/FCW Unavailable Wipe Front Radar Sen-

sor” message occurs frequently (e.g. more than once on
every trip) without any snow, rain, mud, or other
obstruction, have the radar sensor realigned at your
authorized dealer.

• Installing a snow plow, front-end protector, an aftermar-

ket grille or modifying the grille is not recommended.
Doing so may block the sensor and inhibit ACC/FCW
operation.

“Clean Front Windshield” Warning

The “ACC/FCW Limited Functionality Clean Front Wind-
shield” warning will display and also a chime will indicate
when conditions temporarily limit system performance.
This most often occurs at times of poor visibility, such as in
snow or heavy rain and fog. The ACC system may also
become temporarily blinded due to obstructions, such as
mud, dirt, or ice on windshield and fog on the inside of
glass. In these cases, the instrument cluster display will

STARTING AND OPERATING

277

display “ACC/FCW Limited Functionality Clean Front
Windshield” and the system will have degraded perfor-
mance.

The “ACC/FCW Limited Functionality Clean Front Wind-
shield” message can sometimes be displayed while driving
in adverse weather conditions. The ACC/FCW system will
recover after the vehicle has left these areas. Under rare
conditions, when the camera is not tracking any vehicles or
objects in its path this warning may temporarily occur.

If weather conditions are not a factor, the driver should
examine the windshield and the camera located on the
back side of the inside rear view mirror. They may require
cleaning or removal of an obstruction.

When the condition that created limited functionality is no
longer present, the system will return to full functionality.

NOTE:

If the “ACC/FCW Limited Functionality Clean

Front Windshield” message occurs frequently (e.g. more
than once on every trip) without any snow, rain, mud, or
other obstruction, have the windshield and forward facing
camera inspected at your authorized dealer.

Service ACC/FCW Warning

If the system turns off, and the instrument cluster displays
“ACC/FCW Unavailable Service Required” or “Cruise/
FCW Unavailable Service Required”, there may be an
internal system fault or a temporary malfunction that
limits ACC functionality. Although the vehicle is still
drivable under normal conditions, ACC will be temporar-
ily unavailable. If this occurs, try activating ACC again
later, following an ignition cycle. If the problem persists,
see your authorized dealer.

Precautions While Driving With ACC

In certain driving situations, ACC may have detection
issues. In these cases, ACC may brake late or unexpectedly.
The driver needs to stay alert and may need to intervene.

Towing A Trailer

Towing a trailer is not advised when using ACC.

278

STARTING AND OPERATING

Offset Driving

ACC may not detect a vehicle in the same lane that is offset
from your direct line of travel, or a vehicle merging in from
a side lane. There may not be sufficient distance to the
vehicle ahead. The offset vehicle may move in and out of
the line of travel, which can cause your vehicle to brake or
accelerate unexpectedly.

Turns And Bends

When driving on a curve with ACC engaged, the system
may decrease the vehicle speed and acceleration for stabil-
ity reasons, with no target vehicle detected. Once the
vehicle is out of the curve the system will resume your
original set speed. This is a part of normal ACC system
functionality.

NOTE:

On tight turns ACC performance may be limited.

Offset Driving Condition Example

Turn Or Bend Example

STARTING AND OPERATING

279

Using ACC On Hills

When driving on hills, ACC may not detect a vehicle in
your lane. Depending on the speed, vehicle load, traffic
conditions, and the steepness of the hills, ACC perfor-
mance may be limited.

Lane Changing

ACC may not detect a vehicle until it is completely in the
lane in which you are traveling. In the illustration shown,
ACC has not yet detected the vehicle changing lanes and it
may not detect the vehicle until it’s too late for the ACC
system to take action. ACC may not detect a vehicle until it
is completely in the lane. There may not be sufficient
distance to the lane-changing vehicle. Always be attentive
and ready to apply the brakes if necessary.

ACC Hill Example

Lane Changing Example

280

STARTING AND OPERATING

Narrow Vehicles

Some narrow vehicles traveling near the outer edges of the
lane or edging into the lane are not detected until they have
moved fully into the lane. There may not be sufficient
distance to the vehicle ahead.

Stationary Objects And Vehicles

ACC does not react to stationary objects and stationary
vehicles. For example, ACC will not react in situations
where the vehicle you are following exits your lane and the
vehicle ahead is stopped in your lane. Always be attentive
and ready to apply the brakes if necessary.

General Information

The following regulatory statement applies to all Radio
Frequency (RF) devices equipped in this vehicle:

This device complies with Part 15 of the FCC Rules and
with Industry Canada license-exempt RSS standard(s).
Operation is subject to the following two conditions:

1. This device may not cause harmful interference.

2. This device must accept any interference received, in-

cluding interference that may cause undesired opera-
tion.

Narrow Vehicle Example

Stationary Object And Stationary Vehicle Example

STARTING AND OPERATING

281

NOTE:

Changes or modifications not expressly approved

by the party responsible for compliance could void the
user’s authority to operate the equipment.

Normal (Fixed Speed) Cruise Control Mode

In addition to Adaptive Cruise Control mode, a Normal
(Fixed Speed) Cruise Control mode is available for cruising
at fixed speeds. The Normal (Fixed Speed) Cruise Control
mode is designed to maintain a set cruising speed without
requiring the driver to operate the accelerator. Cruise
Control can only be operated if the vehicle speed is above
20 mph (32 km/h).

To change between the different control modes, push the
Adaptive Cruise Control (ACC) on/off button which turns
the ACC and the Normal (Fixed Speed) Cruise Control off.
Pushing the Normal (Fixed Speed) Cruise Control on/off
button will result in turning on (changing to) the Normal
(Fixed Speed) Cruise Control mode.

WARNING!

In the Normal (Fixed Speed) Cruise Control mode, the
system will not react to vehicles ahead. In addition, the
proximity warning does not activate and no alarm will

(Continued)

WARNING! (Continued)

sound even if you are too close to the vehicle ahead
since neither the presence of the vehicle ahead nor the
vehicle-to vehicle distance is detected. Be sure to
maintain a safe distance between your vehicle and the
vehicle ahead. Always be aware which mode is se-
lected.

To Set A Desired Speed

Turn the Normal (Fixed Speed) Cruise Control
on. When the vehicle has reached the desired
speed, push the SET (+) or SET (-) button and
release. Release the accelerator and the vehicle

will operate at the selected speed. Once a speed has been
set a message “CRUISE CONTROL SET TO MPH (km/h)”
will appear indicating what speed was set. This light will
turn on when the system is turned on via the on/off
control. It turns green when the cruise control is set.

To Vary The Speed Setting

To Increase Speed

When the Normal (Fixed Speed) Cruise Control is set, you
can increase speed by pushing the SET (+) button.

282

STARTING AND OPERATING

The driver’s preferred units can be selected through the
instrument panel settings if equipped. Refer to “Getting To
Know Your Instrument Panel” for more information. The
speed increment shown is dependant on the speed of U.S.
(mph) or Metric (km/h) units:

U.S. Speed (mph)
• Pushing the SET (+) button once will result in a 1 mph

increase in set speed. Each subsequent tap of the button
results in an increase of 1 mph.

• If the button is continually pushed, the set speed will

continue to increase in 5 mph increments until the
button is released. The increase in set speed is reflected
in the instrument cluster display.

Metric Speed (km/h)
• Pushing the SET (+) button once will result in a 1 km/h

increase in set speed. Each subsequent tap of the button
results in an increase of 1 km/h.

• If the button is continually pushed, the set speed will

continue to increase in 10 km/h increments until the
button is released. The increase in set speed is reflected
in the instrument cluster display.

To Decrease Speed

When the Normal (Fixed Speed) Cruise Control is set, you
can decrease speed by pushing the SET (-) button.

The driver’s preferred units can be selected through the
instrument panel settings if equipped. Refer to “Getting To
Know Your Instrument Panel” for more information. The
speed decrement shown is dependant on the speed of U.S.
(mph) or Metric (km/h) units:

U.S. Speed (mph)
• Pushing the SET (-) button once will result in a 1 mph

decrease in set speed. Each subsequent tap of the button
results in a decrease of 1 mph.

• If the button is continually pushed, the set speed will

continue to decrease in 5 mph decrements until the
button is released. The decrease in set speed is reflected
in the instrument cluster display.

Metric Speed (km/h)
• Pushing the SET (-) button once will result in a 1 km/h

decrease in set speed. Each subsequent tap of the button
results in a decrease of 1 km/h.

STARTING AND OPERATING

283

• If the button is continually pushed, the set speed will

continue to decrease in 10 km/h decrements until the
button is released. The decrease in set speed is reflected
in the instrument cluster display.

To Cancel

The following conditions will cancel the Normal (Fixed
Speed) Cruise Control without clearing the memory:
• The brake pedal is applied.
• The CANC button is pushed.
• The Electronic Stability Control/Traction Control Sys-

tem (ESC/TCS) activates.

• The vehicle parking brake is applied.
• The braking temperature exceeds normal range (over-

heated).

• The gear selector is removed from the DRIVE position.
• The driver switches ESC to full-off mode.

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 Turn Off

The system will turn off and erase the set speed in memory
if:
• The Normal (Fixed Speed) Cruise Control on/off button

is pushed.

• The ignition is turned OFF.
• You engage Four-Wheel Drive Low.
• The Adaptive Cruise Control (ACC) on/off button is

pushed.

PARKSENSE REAR 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. If your vehicle is equipped with an
Automatic Transmission, the vehicle brakes may be auto-
matically applied and released when performing a reverse
parking maneuver if the system detects a possible collision
with an obstacle.

284

STARTING AND OPERATING

NOTE:
• The driver can override the automatic braking function

by pressing the gas pedal, turning ParkSense off via
ParkSense switch, or changing the gear while the auto-
matic brakes are being applied.

• Automatic brakes will not be available if ESC is not

available.

• Automatic brakes will not be available if there is a

faulted condition detected with the ParkSense Park
Assist system or the Braking System Module.

• The automatic braking function may only be applied if

the vehicle deceleration is not enough to avoid colliding
with a detected obstacle.

• The automatic braking function may not be applied fast

enough for obstacles that move toward the rear of the
vehicle from the left and/or right sides.

• The automatic braking function can be enabled/

disabled from the Customer-Programmable Features
section of the Uconnect System.

• ParkSense will retain its last known configuration state

for the automatic braking function through ignition
cycles.

The automatic braking function is intended to assist the
driver in avoiding possible collisions with detected ob-
stacles when backing up in REVERSE gear.

NOTE:
• The driver is always responsible for controlling the

vehicle.

• The system is provided to assist the driver and not to

substitute the driver.

• The driver must stay in full control of the vehicle’s

acceleration and braking and is responsible for the
vehicle’s movements.

Refer to “ParkSense System Usage Precautions” for limita-
tions 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 gear selector is in
REVERSE. If ParkSense is enabled at this gear selector
position, the system will remain active until the vehicle
speed is increased to approximately 7 mph (11 km/h) or
above. When in REVERSE and above the system’s operat-
ing speed, a warning will appear within the instrument

STARTING AND OPERATING

285

cluster display indicating the vehicle speed is too fast. The
system will become active again if the vehicle speed is
decreased to speeds less than approximately 6 mph
(9 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 inches (30 cm) up to 79 inches (200
cm) from the rear fascia/bumper in the horizontal direc-
tion, depending on the location, type and orientation 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 Uconnect System. Refer
to

⬙Uconnect Settings” in “Multimedia” for further infor-

mation.

The ParkSense Warning screen is located within the instru-
ment cluster display. It provides visual warnings to indi-
cate the distance between the rear fascia/bumper and the

detected obstacle. Refer to “Instrument Cluster Display” in
“Getting To Know Your Instrument Panel” for further
information.

ParkSense Display

When the vehicle is in REVERSE and an obstacle has been
detected, the warning display will turn on indicating the
system status.

The system will indicate a detected obstacle by showing a
single arc in the left and/or right rear regions based on the
obstacle’s distance and location relative to the vehicle.

Park Assist Ready

286

STARTING AND OPERATING

If an obstacle is detected in the left and/or right rear
region, the display will show a single arc in the left and/or
right rear region and the system will produce a tone. As the
vehicle moves closer to the obstacle, the display will show
the single arc moving closer to the vehicle and the tone will
change from a single 1/2 second tone to slow, to fast, to
continuous.

Single 1/2 Second Tone

Slow Tone

STARTING AND OPERATING

287

Jeep Grand Cherokee SRT (2018 year). Manual - part 18