brake JEEP GRAND CHEROKEE 2017 WK2 / 4.G Workshop Manual

Selec-Terrain consists of the following positions:
•Snow – Tuning set for additional stability in inclement
weather. Use on and off road on loose traction surfaces
such as snow. When in Snow mode (depending on
certain operating conditions), the transmission may use
second gear (rather than first gear) during launches, to
minimize wheel slippage. If equipped with air suspen-
sion, the default ride height for Snow is Normal Ride
Height (NRH).
• Auto – Fully automatic full time four-wheel drive op-
eration can be used on and off road. Balances traction with seamless steering feel to provide improved han-
dling and acceleration over two-wheel drive vehicles. If
equipped with air suspension, the level will change to
Normal Ride Height (NRH).
• Sand – Off road calibration for use on low traction
surfaces such as sand or wet grass. Driveline is maxi-
mized for traction. Some binding may be felt on less
forgiving surfaces. The electronic brake controls are set
to limit traction control management of throttle and
wheel spin. If equipped with air suspension, the default
ride height for Sand is Normal Ride Height (NRH).
• Mud – Off road calibration for use on low traction
surfaces such as mud. Driveline is maximized for trac-
tion. Some binding may be felt on less forgiving sur-
faces. The electronic brake controls are set to limit
traction control management of throttle and wheel spin.
If equipped with air suspension, the level will change to
Off Road 1.
• Rock – Off road calibration only available in 4WD Low
range. The vehicle is raised (if equipped with Air
Suspension) for improved ground clearance. Traction
based tuning with improved steer-ability for use on high
traction off-road surfaces. Use for low speed obstacles
such as large rocks, deep ruts, etc. If equipped with air
Selec-Terrain Switch
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suspension, the vehicle level will change to Off-Road 2.
If the Selec-Terrain switch is in ROCK mode, and the
transfer case is switched from 4WD Low to 4WD High,
the Selec-Terrain system will return to AUTO.
NOTE: Activate the Hill Descent Control or Selec Speed
Control for steep downhill control. See “Electronic Brake
Control System” in this section for further information.
Instrument Cluster Display Messages
When the appropriate conditions exist, a message will
appear in the instrument cluster. Refer to “Instrument
Cluster Display” in “Getting To Know Your Instrument
Panel” for further information.
FUEL SAVER TECHNOLOGY 5.7L ENGINE ONLY —
IF EQUIPPED
This feature offers improved fuel economy by shutting off
four of the engine’s eight cylinders during light load and
cruise conditions. The system is automatic with no driver
inputs or additional driving skills required.
NOTE: This system may take some time to return to full
functionality after a battery disconnect.
POWER STEERING
The electric power steering system will give you good
vehicle response and increased ease of maneuverability in
tight spaces. The system will vary its assist to provide light
efforts while parking and good feel while driving. If the
electric steering system experiences a fault that prevents it
from providing assist, you will still have the ability to steer
the vehicle manually.
Alternate electric power steering efforts can be selected
through the Uconnect System. Refer to ”Customer Pro-
grammable Features” within “Uconnect Settings” in “Mul-
timedia” for further information.
WARNING!
Continued operation with reduced assist could pose a
safety risk to yourself and others. Service should be
obtained as soon as possible.
If the Electric Power Steering warning icon is
displayed and the “SERVICE POWER STEER-
ING” or the “POWER STEERING ASSIST OFF –
SERVICE SYSTEM” message is displayed within
the instrument cluster display, this indicates the vehicle
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To Deactivate
A soft tap on the brake pedal, pushing the CANC button,
or normal brake pressure while slowing the vehicle will
deactivate the Speed Control without erasing the set speed
from memory.
Pushing the on/off button or turning the ignition switch
OFF erases the set speed from memory.
ADAPTIVE CRUISE CONTROL (ACC) — IF
EQUIPPED
Adaptive Cruise Control (ACC) increases the driving con-
venience provided by cruise control while traveling on
highways and major roadways. However, it is not a safety
system and not designed to prevent collisions. Speed
Control function performs differently. Please refer to the
proper section within this chapter.
ACC will allow you to keep cruise control engaged in light
to moderate traffic conditions without the constant need to
reset your cruise control. ACC utilizes a radar sensor and a
forward facing camera 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 accelerate (not to exceed the
original set speed) automatically to maintain a preset
following distance, while matching the speed of the
vehicle ahead.
The Cruise Control system has two control modes:
• Adaptive Cruise Control mode for maintaining an ap-
propriate distance between vehicles.
• Normal (Fixed Speed) Cruise Control mode for cruising
at a constant preset speed. For additional information,
refer to “Normal (Fixed Speed) Cruise Control Mode” in
this section.
NOTE: Normal (Fixed Speed) Cruise Control will not react
to preceding vehicles. Always be aware of the mode
selected.
You can change the mode by using the Cruise Control
buttons. The two control modes function differently. Al-
ways confirm which mode is selected.
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WARNING!
•Adaptive Cruise Control (ACC) is a convenience
system. It is not a substitute for active driving
involvement. It is always the driver ’s responsibility
to be attentive of road, traffic, and weather condi-
tions, vehicle speed, distance to the vehicle ahead;
and, most importantly, brake operation to ensure safe
operation of the vehicle under all road conditions.
Your complete attention is always required while
driving to maintain safe control of your vehicle.
Failure to follow these warnings can result in a
collision and death or serious personal injury.
• 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 conditions
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.
(Continued)
WARNING! (Continued)
•Will bring the vehicle to a complete stop while
following a target vehicle and hold the vehicle for
approximately 3 minutes in the stop position. If the
target vehicle does not start moving within 3
minutes the parking brake will be activated, and
the ACC system will be cancelled.
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.
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Adaptive Cruise Control (ACC) Operation
The Speed Control buttons (located on the right side of the
steering wheel) operates the ACC system.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
instrument cluster displays “ACC Ready.”
When the system is off, the instrument cluster displays
“Adaptive Cruise Control (ACC) Off.”
NOTE: You cannot engage ACC under the following con-
ditions:
• When in Four-Wheel Drive Low.
• When you apply the brakes.
• When the parking brake is set.
• When the automatic transmission is in PARK, REVERSE
or NEUTRAL.
• When the vehicle speed is outside of the speed range.
Adaptive Cruise Control Buttons
1 — Normal (Fixed Speed)
Cruise Control On/Off 5 — Distance Setting Increase
2 — SET+/Accel 6 — Adaptive Cruise Control
(ACC) On/Off
3 — RES/Resume 7 — Distance Setting Decrease
4 — SET-/Decel 8 — CANC/Cancel
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•When the brakes are overheated.
• When the driver door is open.
• When the driver seat belt is unbuckled.
• ESC Full-Off Mode is active.
To Activate/Deactivate
Push and release the Adaptive Cruise Control (ACC)
on/off button. The ACC menu in the instrument cluster
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 instrument cluster displays
“Adaptive Cruise Control (ACC) Off.”
WARNING!
Leaving the Adaptive Cruise Control (ACC) system on
when not in use is dangerous. You could accidentally
set the system or cause it to go faster than you want.
You could lose control and have a collision. Always
leave the system off when you are not using it.
Adaptive Cruise Control Ready
Adaptive Cruise Control Off
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To Set A Desired ACC Speed
When the vehicle reaches the speed desired, push the SET
+button or the SET -button and release. The instrument
cluster display 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.
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
instrument cluster display.
• The system will not be controlling the distance between
your vehicle and the vehicle ahead. The vehicle speed
will only be determined by the position of the accelera-
tor pedal.
To Cancel
The following conditions cancel the system:
• The brake pedal is applied.
• The CANC button is pushed.
• An Anti-Lock Brake System (ABS) event occurs.
• The 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.
• The driver switches ESC to full-off mode.
• The braking temperature exceeds normal range (over-
heated).
• A Trailer Sway Control (TSC) event occurs.
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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.
• The Normal (Fixed Speed) Cruise 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 instrument cluster display 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 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 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.
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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 suffi-
ciently 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 coming
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 downhill.
This is normal operation and necessary to maintain set
speed. When driving up hill and down hill, the ACC
system will cancel if the braking temperature exceeds
normal range (overheated).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 instrument cluster display.
Distance Setting 4 Bars (Longest)
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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 VehicleIndicator” 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.
Distance Setting 1 Bar (Short)
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