2018 JEEP GRAND CHEROKEE brakes

STARTING THE ENGINE —
GAS
Before starting your vehicle, adjust your seat,
adjust the inside and outside mirrors, fasten
your seat belt, and if present, instruct all
other occupants to buckle their seat belts.
WARNING!
• Before exiting a vehicle, always come to
a complete stop, then shift the auto-
matic transmission into PARK and apply
the parking brake.
• Always make sure the keyless ignition
node is in the OFF mode, key fob is
removed from the vehicle and vehicle is
locked.
• Never leave children alone in a vehicle,
or with access to an unlocked vehicle.
Leaving children in a vehicle unattended
is dangerous for a number of reasons. A
child or others could be seriously or
fatally injured. Children should be
warned not to touch the parking brake,
brake pedal or the gear selector.
WARNING!
• Do not leave the key fob in or near the
vehicle, or in a location accessible to
children, and do not leave the ignition of
a vehicle equipped with Keyless Enter-
N-Go in the ACC or ON/RUN mode. A
child could operate power windows,
other controls, or move the vehicle.
• Do not leave children or animals inside
parked vehicles in hot weather. Interior
heat build-up may cause serious injury
or death.
Automatic Transmission
The gear selector must be in the NEUTRAL or
PARK position before you can start the en-
gine. Apply the brakes before shifting into
any driving gear.
CAUTION!
Damage to the transmission may occur if
the following precautions are not ob-
served:
• Do not shift from REVERSE, PARK, or
NEUTRAL into any forward gear when
the engine is above idle speed.
• Shift into PARK only after the vehicle
has come to a complete stop.
• Shift into or out of REVERSE only after
the vehicle has come to a complete stop
and the engine is at idle speed.
• Before shifting into any gear, make sure
your foot is firmly on the brake pedal.
Normal Starting
To Turn On The Engine Using The ENGINE START/
STOP Button
1. The transmission must be in PARK or
NEUTRAL.
2. Press and hold the brake pedal while
pushing the ENGINE START/STOP button
once.
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CAUTION!
Damage to the transmission may occur if
the following precautions are not ob-
served:
• Shift into or out of PARK or REVERSE
only after the vehicle has come to a
complete stop.
• Do not shift between PARK, REVERSE,
NEUTRAL, or DRIVE when the engine is
above idle speed.
• Before shifting into any gear, make sure
your foot is firmly pressing the brake
pedal.
NOTE:
You must press and hold the brake pedal
while shifting out of PARK.
Ignition Park Interlock
This vehicle is equipped with an Ignition Park
Interlock which requires the transmission to
be in PARK before the ignition can be turned
to the OFF mode. This helps the driver avoid
inadvertently leaving the vehicle withoutplacing the transmission in PARK. This sys-
tem also locks the transmission in PARK
whenever the ignition is in the OFF mode.
NOTE:
The transmission is NOT locked in PARK
when the ignition is in the ACC mode (even
though the engine will be off). Ensure that
the transmission is in PARK, and the ignition
isOFF(not in ACC mode) before exiting the
vehicle.
Brake/Transmission Shift Interlock
System
This vehicle is equipped with a Brake Trans-
mission Shift Interlock system (BTSI) that
holds the transmission gear selector in PARK
unless the brakes are applied. To shift the
transmission out of PARK, the engine must
be running and the brake pedal must be
pressed. The brake pedal must also be
pressed to shift from NEUTRAL into DRIVE or
REVERSE when the vehicle is stopped or
moving at low speeds.
Fuel Economy (ECO) Mode
The Fuel Economy (ECO) mode can improve
the vehicle's overall fuel economy during nor-
mal driving conditions. Push the “ECO”
switch in the center stack of the instrument
panel to activate or disable ECO mode. A
light on the switch indicates when ECO mode
is disabled (for regular models) or enabled
(for SRT models).
ECO Switch
STARTING AND OPERATING
146

Guidelines For Track Use
NOTE:
Because of the extreme conditions encoun-
tered during track use, any damage or wear
associated with track use may not be covered
by warranty.
• If your SRT vehicle is equipped with Drive
Modes they will alter the vehicle’s perfor-
mance in various driving situations. It is
recommended that your vehicle operates in
SPORT or TRACK modes during the track
event.
• Prior to each track event/day, verify all
fluids are at the correct levels. Refer to
“Fluid Capacities” in “Technical Specifica-
tions” for further information.
• Prior to each track event, verify the front
and rear brake pads have more than ½ pad
thickness remaining. If the brake pads re-
quire changing, please burnish prior to
track outing at full pace.
NOTE:
Use of DOT 4 brake fluid is suggested for
extended track usage due to increased ther-
mal capacity.• At the conclusion of each track event, it is
recommended that a brake bleed proce-
dure is performed to maintain the pedal
feel and stopping capability of your Brembo
High Performance brake system.
• It is recommended that each track outing
should end with a minimum of one cool
down lap using minimal braking.
• If equipped with a removable lower front
fascia grille, it is recommended to remove it
for track use during warm/hot weather to
improve cooling airflow to critical pow-
ertrain and cooling system components.
• All SRT vehicles are track tested for
24 hours of endurance, however, it is rec-
ommended that suspension system, brake
system, prop shaft, and ½ shaft boots
should be checked for wear or damage after
every track event.
• Track usage results in increased operating
temperatures of the engine, transmission,
driveline and brake system. This may affect
noise vibrations and harshness (NVH)
countermeasures designed into your ve-
hicle. New components may need to be
installed to return the system to the original
NVH performance.• Tire pressure:
– 40 psi (276 kpa) hot, recommend
32 psi (221 kpa) front, 30 psi
(207 kpa) rear cold
NOTE:
It is recommended that you target 40 psi
(276 kpa) Hot Tire Pressure at the conclusion
of each track session. Starting at 32 psi
(221 kpa) Front & 30 psi (207 kpa) Rear
Cold and adjusting based on ambient & track
conditions is recommended. Tire pressure
can be monitored via the instrument cluster
display and can assist with adjustments.
Track burnishing your brakes:
To avoid “green lining fade” during track use,
the brake pads and rotors must have a ther-
mal burnish for factory installed components
or when new brake friction components are
installed:
1. Use one track session to burnish brakes
by driving at 75% speed. Brake at ap-
proximately 0.60-0.80g maximum with-
out ABS intervention.
STARTING AND OPERATING
162

2. Lap the track in this manner until you
start smelling the brakes. Continue for
another ½ lap at speed, then do a two lap
cool down with minimal brake applies.
Make sure the brakes are not smoking. If
they are, do another cool down lap.
3. Do not continue for more than one full
burnishing lap after you start smelling the
brakes. Do not get them smoking heavily.
This will get them too hot and affect their
life negatively in future track use.
4. Allow vehicle to sit and cool in the pad-
dock for at least 30 min. If an infrared
thermal gun is available, allow rotors to
cool to 200°F (93.3°C) before going back
out.
5. There should be a thin, ash layer when
inspecting the pads installed in the cali-
per. Having the ash layer go more than
half the thickness of the pad material
indicates too aggressive of a burnish.
6. Sometimes, a second burnish session is
required. If the pads start smelling in the
next track session, reduce speed and
braking decel to burnish targets and fol-
low step 2-4.7. New pads installed on old rotors still need
to be burnished. New rotors installed with
old pads should be burnished at the track
or street driven for 300 city miles to
develop an adequate lining transfer layer
on the rotor surface prior to track use.
8. Rotors that pulsate during track use
should be replaced. Resurfacing of the
rotors is not recommended, as it removes
mass from the rotor, reducing its thermal
capacity. Resurfacing also thins the rotor
cheek, making it less robust and increas-
ing the likelihood of pulsation in further
track use.
SPEED CONTROL
When engaged, the Speed Control takes over
accelerator operations at speeds greater than
25 mph (40 km/h).
The Speed Control buttons are located on the
right side of the steering wheel.
Speed Control Switches
1 — Push CANC/Cancel
2 — Push SET (+)/Accel
3 — Push RES/Resume
4 — Push On/Off
5 — Push SET (-)/Decel
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• 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 af-
ter 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 oc-
cur while climbing uphill or descending
downhill. This is normal operation and nec-
essary to maintain set speed. When driving
up hill and down hill, the ACC system will
cancel if the braking temperature exceeds
normal range (overheated).
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” in the Owner’s Manual 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
While ACC is set, the set speed can be de-
creased 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” in the Owner’s Manual 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 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.
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• 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 Resume
If there is a set speed in memory push the
RES (resume) button and then remove your
foot from the accelerator pedal. The instru-
ment cluster display will show 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 sta-
tionary vehicle in-front of your vehicle in
close proximity.
WARNING!
The Resume function should only be used
if traffic and road conditions permit. Re-
suming a set speed that is too high or too
low for prevailing traffic and road condi-
tions could cause the vehicle to accelerate
or decelerate too sharply for safe opera-
tion. Failure to follow these warnings can
result in a collision and death or serious
personal injury.
Deactivation
Push and release the Adaptive Cruise Control
(ACC) on/off button a second time to turn the
system off.
“Adaptive Cruise Control (ACC) Off” will ap-
pear in the instrument cluster display to
indicate the ACC is off.
WARNING!
Leaving the 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
WARNING!
an accident. Always leave the system OFF
when you are not using it.
Setting The Following Distance
The specified following distance for ACC can
be set by varying the distance setting be-
tween 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 appears
in the instrument cluster display.
• To increase the distance setting, push the
Distance Setting—Increase button and re-
lease. Each time the button is pushed, the
distance setting increases by one bar (lon-
ger).
• To decrease the distance setting, push the
Distance Setting—Decrease button and re-
lease. Each time the button is pushed, the
distance setting decreases by one bar
(shorter).
STARTING AND OPERATING
168

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 stand-
still, 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 clus-
ter display and produce a warning chime.
Driver intervention will be required at this
moment.
While ACC with Stop is holding your vehicle
at a standstill, if the driver seatbelt is un-
buckled 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 pedes-
trians, vehicles or objects in the path of
the vehicle. Failure to follow these warn-
ings can result in a collision and death or
serious personal injury.
Changing Modes
If desired, the Adaptive Cruise Control mode
can be turned off and the system can be
operated as a Normal (Fixed Speed) Cruise
Control mode. When in the Normal (Fixed
Speed) Cruise Control mode the distance
setting feature will be disabled and the sys-
tem will maintain the speed you set.
• To change between the different cruise con-
trol modes, push the Adaptive Cruise Con-
trol (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.Refer to your Owner's Manual for further
information.
WARNING!
Adaptive Cruise Control (ACC) is a conve-
nience 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 conditions, ve-
hicle speed, distance to the vehicle ahead;
and, most importantly, brake operation to
ensure safe operation of the vehicle under
all road conditions. Your complete atten-
tion is always required while driving to
maintain safe control of your vehicle. Fail-
ure 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
169

WARNING!
limited upon adverse sight distance con-
ditions.
• 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 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 con-
struction 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.
WARNING!
• When towing a trailer up or down steep
slopes.
• When circumstances do not allow safe
driving at a constant speed.
The Cruise Control system has two control
modes:
• Adaptive Cruise Control mode for main-
taining an appropriate 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 your Owner’s Manual.
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. Always con-
firm which mode is selected.
PARKSENSE REAR PARK
ASSIST
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 direction, depend-
ing on the location, type and orientation of
the obstacle.
Activation/Deactivation ParkSense
ParkSense can be enabled and disabled with
the ParkSense switch
.
When the ParkSense switch is pushed to
disable the system, the instrument cluster
display will show the “PARKSENSE OFF”
message for approximately five seconds. Re-
fer to “Instrument Cluster Display” in “Get-
ting To Know Your Instrument Panel” in the
Owner’s Manual for more information. When
the gear selector is moved to REVERSE and
STARTING AND OPERATING
170