JEEP GRAND CHEROKEE 2015 WK2 / 4.G SRT Owners Manual

WARNING!(Continued)
•The ACC system:
•Does not react to pedestrians, oncoming vehicles,
and stationary objects (e.g., a stopped vehicle in a
traffic jam or a disabled vehicle).
•Cannot take street, traffic, and weather condi-
tions into account, and may be limited upon
adverse sight distance conditions.
•Does not always fully recognize complex driving
conditions, which can result in wrong or missing
distance warnings.
•Will bring the vehicle to a complete stop while
following a target vehicle and hold the vehicle
for 2 seconds in the stop position. If the target
vehicle does not start moving within two seconds
the ACC system will display a message that the
system will release the brakes and that the
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WARNING!(Continued)
brakes must be applied manually. An audible
chime will sound when the brakes are released.
You should switch off the ACC system:
•When driving in fog, heavy rain, heavy snow, sleet,
heavy traffic, and complex driving situations (i.e.,
in highway construction zones).
•When entering a turn lane or highway off ramp;
when driving on roads that are winding, icy, snow-
covered, slippery, or have steep uphill or downhill
slopes.
•When towing a trailer up or down steep slopes.
•When circumstances do not allow safe driving at a
constant speed.
Adaptive Cruise Control (ACC) Operation
The speed control buttons (located on the right side of the
steering wheel) operates the ACC system.
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UNDERSTANDING THE FEATURES OF YOUR VEHICLE 189

NOTE:Any chassis/suspension or tire size modifications
to the vehicle will effect the performance of the Adaptive
Cruise Control and Forward Collision Warning System.
Activating Adaptive Cruise Control (ACC)
You can only engage ACC if the vehicle speed is above
0 mph (0 km/h).
The minimum Set Speed for the ACC system is 20 mph
(32 km/h).
When the system is turned on and in the READY state,
the Driver Information Display (DID) displays “ACC
Ready.”
When the system is OFF, the DID displays “Adaptive
Cruise Control (ACC) Off.”
NOTE:You cannot engage ACC under the following
conditions:
•When in Four-Wheel Drive Low.
Adaptive Cruise Control Buttons1 — NORMAL (FIXED SPEED) CRUISE CONTROL ON/OFF
2 — SET+/ACCEL
3 — RESUME
4 — SET-/DECEL
5 — DISTANCE SETTING — INCREASE
6 — ADAPTIVE CRUISE CONTROL (ACC) ON/OFF
7 — DISTANCE SETTING — DECREASE
8 — CANCEL 190 UNDERSTANDING THE FEATURES OF YOUR VEHICLE

•When you apply the brakes.
•When the parking brake is set.
•When the automatic transmission is in PARK, RE-
VERSE or NEUTRAL.
•When the Vehicle speed is outside of the speed range.
•When the brakes are overheated.
•When the driver door is open.
•When the driver seat belt is unbuckled.
To Activate/Deactivate
Push and release the Adaptive Cruise Control (ACC)
ON/OFF button. The ACC menu in the DID displays
“ACC Ready.”To turn the system OFF, push and release the Adaptive
Cruise Control (ACC) ON/OFF button again. At this
time, the system will turn off and the DID will display
“Adaptive Cruise Control (ACC) Off.”
Adaptive Cruise Control Ready
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UNDERSTANDING THE FEATURES OF YOUR VEHICLE 191

WARNING!
Leaving the Adaptive Cruise Control (ACC) system
on when not in use is dangerous. You could acciden-
tally set the system or cause it to go faster than you
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WARNING!(Continued)
want. You could lose control and have a collision.
Always leave the system off when you are not using
it.
To Set A Desired ACC Speed
When the vehicle reaches the speed desired, push the
SET+button or the SET-button and release. The DID
will display the set speed.
If the system is Set when the vehicle speed is below
20 mph (32 km/h), the Set Speed shall be defaulted to
20 mph (32 km/h). If the system is Set when the vehicle
speed is above 20 mph (32 km/h), the Set Speed shall be
the current speed of the vehicle.
NOTE:ACC cannot be set if there is a stationary vehicle
in front of your vehicle in close proximity.
Adaptive Cruise Control Off
192 UNDERSTANDING THE FEATURES OF YOUR VEHICLE

Remove your foot from the accelerator pedal. If you do
not, the vehicle may continue to accelerate beyond the set
speed. If this occurs:
•The message “DRIVER OVERRIDE” will display in
the DID.
•The system will not be controlling the distance be-
tween your vehicle and the vehicle ahead. The vehicle
speed will only be determined by the position of the
accelerator pedal.
To Cancel
The following conditions cancel the system:
•The brake pedal is applied.
•The CANCEL button is pushed.
•An Anti-Lock Brake System (ABS) event occurs.•The shift lever/gear selector is removed from the
Drive position.
•The Electronic Stability Control/Traction Control Sys-
tem (ESC/TCS) activates.
•The vehicle parking brake is applied.
•Driver seatbelt is unbuckled at low speeds.
•Driver door is opened at low speeds.
•A Trailer Sway Control (TSC) event occurs.
•The driver switches ESC to full-off mode.To Turn Off
The system will turn off and clear the set speed in
memory if:
•The Adaptive Cruise Control (ACC) ON/OFF button
is pushed.
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UNDERSTANDING THE FEATURES OF YOUR VEHICLE 193

•The Normal (Fixed Speed) Electronic Speed Control
ON/OFF button is pushed.
•The ignition is turned OFF.
•You switch to Four-Wheel Drive Low.
To Resume
If there is a set speed in memory push the RES (resume)
button and then remove your foot from the accelerator
pedal. The DID will display the last set speed.
NOTE:
•If your vehicle stays at standstill for longer than two
seconds, then the system will cancel and the brake
force will be ramped-out. The driver will have to apply
the brakes to keep the vehicle at a standstill.
•ACC cannot be resumed if there is a stationary vehicle
in-front of your vehicle in close proximity.
WARNING!
The Resume function should only be used if traffic
and road conditions permit. Resuming a set speed
that is too high or too low for prevailing traffic and
road conditions could cause the vehicle to accelerate
or decelerate too sharply for safe operation. Failure to
follow these warnings can result in a collision and
death or serious personal injury.
To Vary The Speed Setting
To Increase Speed
While ACC is set, you can increase the set speed by
pushing the SET+button.
The drivers preferred units can be selected through the
instrument panel settings if equipped. Refer to “Under-
standing Your Instrument Panel” for more information.
194 UNDERSTANDING THE FEATURES OF YOUR VEHICLE

The speed increment shown is dependant on the chosen
speed unit of U.S. (mph) or Metric (km/h):
U.S. Speed (mph)
•Pushing the SET+button once will result ina1mph
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 DID.
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 DID.
To Decrease Speed
While ACC is set, the set speed can be decreased by
pushing the SET-button.
The drivers preferred units can be selected through the
instrument panel settings if equipped. Refer to “Under-
standing Your Instrument Panel” for more information.
The speed decrement shown is dependant on the chosen
speed unit of U.S. (mph) or Metric (km/h):
U.S. Speed (mph)
•Pushing the SET-button once will result ina1mph
decrease in set speed. Each subsequent tap of the
button results in a decrease of 1 mph.
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UNDERSTANDING THE FEATURES OF YOUR VEHICLE 195

•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 re-
flected in the DID.
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.
•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 re-
flected in the DID.
NOTE:
•When you override and push the SET+button or SET
-buttons, the new Set Speed will be the current speed
of the vehicle.•When you use the SET-button to decelerate, if the
engine’s braking power does not slow the vehicle
sufficiently to reach the set speed, the brake system
will automatically slow the vehicle.
•The ACC system applies the brake down to a full stop
when following a target vehicle. If an ACC host vehicle
follows a target vehicle to a standstill, the host vehicle
will release the vehicle brakes two seconds after com-
ing to a full stop.
•The ACC system maintains set speed when driving up
hill and down hill. However, a slight speed change on
moderate hills is normal. In addition, downshifting
may occur while climbing uphill or descending down-
hill. This is normal operation and necessary to main-
tain set speed. When driving up hill and down hill, the
ACC system will cancel if the braking temperature
exceeds normal range (overheated).
196 UNDERSTANDING THE FEATURES OF YOUR VEHICLE

Setting The Following Distance In ACC
The specified following distance for ACC can be set by
varying the distance setting between four bars (longest),
three bars (long), two bars (medium) and one bar (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 DID.
Distance Setting 4 Bars (Longest)
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UNDERSTANDING THE FEATURES OF YOUR VEHICLE 197

Distance Setting 3 Bars (Long)Distance Setting 2 Bars (Medium)
198 UNDERSTANDING THE FEATURES OF YOUR VEHICLE