JEEP GRAND CHEROKEE 2015 WK2 / 4.G Owners Manual

To keep the ACC System operating properly, it is impor-
tant 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
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:
•If the “ACC/FCW Unavailable Wipe Front Radar
Sensor” 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 after-
market grille or modifying the grille is not recom-
mended. Doing so may block the sensor and inhibit
ACC/FCW operation.
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UNDERSTANDING THE FEATURES OF YOUR VEHICLE 209

“Clean Front Windshield” Warning
The “ACC/FCW Limited Functionality Clean Front
Windshield” warning will display and also a chime will
indicate when conditions temporarily limit system per-
formance. This most often occurs at times of poor visibil-
ity, 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 DID will
display “ACC/FCW Limited Functionality Clean Front
Windshield” and the system will have degraded perfor-
mance.
The “ACC/FCW Limited Functionality Clean Front
Windshield” 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 function-
ality.
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.
210 UNDERSTANDING THE FEATURES OF YOUR VEHICLE

Service ACC/FCW Warning
If the system turns off, and the DID displays “ACC/FCW
Unavailable Service Required”or “Cruise/FCW Unavail-
able Service Required”, there may be an internal system
fault or a temporary malfunction that limits ACC func-
tionality. Although the vehicle is still drivable under
normal conditions, ACC will be temporarily unavailable.
If this occurs, try activating ACC again later, following a
key 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 unexpect-
edly. The driver needs to stay alert and may need to
intervene.
Towing A Trailer
NOTE:Towing a trailer is not advised when using ACC.
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.
Offset Driving Condition Example
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UNDERSTANDING THE FEATURES OF YOUR VEHICLE 211

Turns And Bends
When driving on a curve with ACC engaged, the system
may decrease the vehicle speed and acceleration for
stability 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.
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.
Turn Or Bend Example
212 UNDERSTANDING THE FEATURES OF YOUR VEHICLE

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 atten-
tive and ready to apply the brakes if necessary.
ACC Hill Example
Lane Changing Example
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UNDERSTANDING THE FEATURES OF YOUR VEHICLE 213

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.
Narrow Vehicle Example
Stationary Object And Stationary Vehicle Example
214 UNDERSTANDING THE FEATURES OF YOUR VEHICLE

General Information
This vehicle has systems that operate on radio frequency
that comply with Part 15 of the Federal Communications
Commission (FCC) rules and with Industry Canada
Standards RSS- GEN/210/220/310.
Operation is subject to the following two conditions:
1. The device may not cause harmful interference.
2. The device must accept any interference received,
including interference that may cause undesired op-
eration of the device.
Changes or modifications to any of these systems by
other than an authorized service facility could void
authorization to use this equipment.
Normal (Fixed Speed) Electronic Speed Control
Mode
In addition to Adaptive Cruise Control mode, a Normal
(Fixed Speed) Electronic Speed Control mode is available
for cruising at fixed speeds. The Normal (Fixed Speed)
Electronic Speed Control mode is designed to maintain a
set cruising speed without requiring the driver to operate
the accelerator. Electronic Speed Control can only be
operated if the vehicle speed is above 20 mph (32 km/h).
To change between the different control modes, press the
ADAPTIVE CRUISE CONTROL (ACC) ON/OFF button
which turns the ACC and the NORMAL (Fixed Speed)
ELECTRONIC SPEED CONTROL OFF. Pressing of the
NORMAL (Fixed Speed) ELECTRONIC SPEED CON-
TROL ON/OFF button will result in turning ON (chang-
ing to) the Normal (Fixed Speed) Electronic Speed Con-
trol mode.
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UNDERSTANDING THE FEATURES OF YOUR VEHICLE 215

WARNING!
In the normal Cruise Control mode, the system will
not react to vehicles ahead. In addition, the proximity
warning does not activate and no alarm will 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
selected.
To Set A Desired Speed
Turn the Normal (Fixed Speed) Electronic
Speed Control ON. When the vehicle has
reached the desired speed, press the SET (+) or
SET (-) button and release. Release the accel-
erator and the vehicle will operate at the selected speed.
Once a speed has been set a message (CRUISE CON-
TROL SET TO MPH/KM) will appear indicating what
speed was set. This light will turn on when the electronic
speed control is SET.
To Vary The Speed Setting
To Increase Speed
When the Normal (Fixed Speed) Electronic Speed Con-
trol is set, you can increase speed by pressing the SET+
button.
The speed increment shown is dependant on the speed of
U.S. (mph) or Metric (km/h) units:
U.S. Speed (mph)
•Pressing the SET+button once will result ina1mph
increase in set speed. Each subsequent tap of the
button results in an increase of 1 mph.
216 UNDERSTANDING THE FEATURES OF YOUR VEHICLE

•If the button is continually pressed, 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 DID display.
To Decrease Speed
When the Normal (Fixed Speed) Cruise Control is set,
you can decrease speed by pressing the SET-button.
The speed decrement shown is dependant on the speed
of U.S. (mph) or Metric (km/h) units:
U.S. Speed (mph)
•Pressing the SET-button once will result ina1mph
decrease in set speed. Each subsequent tap of the
button results in a decrease of 1 mph.
•If the button is continually pressed, the set speed will
continue to decrease in 5 mph increments until the
button is released. The decrease in set speed is re-
flected in the DID display.
Metric Speed (km/h)
•Pressing 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.
•If the button is continually pressed, the set speed will
continue to decrease in 10 km/h increments until the
button is released. The decrease in set speed is re-
flected in the DID display.
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UNDERSTANDING THE FEATURES OF YOUR VEHICLE 217

To Cancel
The following conditions will cancel the Normal (Fixed
Speed) Electronic Speed Control without clearing the
memory:
•The brake pedal is applied.
•The CANCEL button is pressed.
•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 shift lever/gear selector is removed from the
Drive position.
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) Electronic Speed Control
ON/OFF button is pressed.
•The ignition is turned off.
•You engage Four-Wheel Drive Low.
•The Adaptive Cruise Control (ACC) On/Off button is
pressed.
218 UNDERSTANDING THE FEATURES OF YOUR VEHICLE