2018 JEEP GRAND CHEROKEE sensor

Rearming Of The System
If something triggers the alarm, and no action
is taken to disarm it, the vehicle security
alarm will turn the horn off after 29 seconds,
five seconds between cycles, up to eight
cycles if the trigger remains active and the
vehicle security alarm will rearm itself.
PREMIUM VEHICLE
SECURITY ALARM — IF
EQUIPPED
This premium vehicle security alarm moni-
tors the vehicle doors, hood, liftgate and
ignition for unauthorized operation. When the
alarm is armed, the interior switches for door
locks, and power liftgate are disabled. If
something triggers the alarm, the vehicle
security alarm will provide the following au-
dible and visible signals: the horn will pulse,
and the park lamps and/or turn signals will
flash.
To Arm The System
Follow these steps to arm the security alarm:
1. Remove the key from the ignition system
(refer to "Starting The Engine" in "Starting
And Operating" for further information).
• For vehicles equipped with Keyless
Enter-N-Go, make sure the vehicle igni-
tion system is "OFF."
• For vehicles not equipped with Keyless
Enter-N-Go, make sure the vehicle igni-
tion system is "OFF" and the key is physi-
cally removed from the ignition.
2. Perform one of the following methods to
lock the vehicle:
• Push lock on the interior power door
lock switch with the driver and/or passen-
ger door open.
• Push the lock button on the exterior
Passive Entry Door Handle with a valid
key fob available in the same exterior
zone (refer to "Keyless Enter-N-Go" in
“Doors” in Getting To Know Your Vehicle"
in your Owner’s Manual for further infor-
mation).• Push the lock button on the key fob.
3. If any doors are open, close them.
NOTE:
• Once the security system is armed, it re-
mains in that state until you disarm it by
following either of the disarming proce-
dures described. If a power loss occurs
after arming the system, you must disarm
the system after restoring power to prevent
alarm activation.
• The ultrasonic intrusion sensor (motion de-
tector) actively monitors your vehicle every
time you arm the security system. If you
prefer, you can turn off the ultrasonic intru-
sion sensor when arming the security sys-
tem. To do so, push the lock button on the
key fob three times within 15 seconds of
arming the system (while the vehicle secu-
rity light is flashing rapidly).
19

To Disarm The System
The vehicle security alarm can be disarmed
using any of the following methods:
• Push the unlock button on the key fob.
• Grasp the Passive Entry Unlock Door
Handle (refer to "Keyless Enter-N-Go" in
“Doors” in Getting To Know Your Vehicle" in
your Owner’s Manual for further informa-
tion).
• Cycle the vehicle ignition system out of the
OFF position.
– For vehicles equipped with Keyless
Enter-N-Go, push the Keyless Enter-
N-Go Start/Stop button (requires at
least one valid key fob in the vehicle).
– For vehicles not equipped with Keyless
Enter-N-Go, insert a valid key into the
ignition switch and turn the key to the
ON position.
NOTE:
• The driver's door key cylinder and the lift-
gate button on the key fob cannot arm or
disarm the vehicle security alarm.• The vehicle security alarm remains armed
during power liftgate entry. Pushing the
liftgate button will not disarm the vehicle
security alarm. If someone enters the ve-
hicle through the liftgate and opens any
door the alarm will sound.
• When the vehicle security alarm is armed,
the interior power door lock switches will
not unlock the doors.
• The ultrasonic intrusion sensor (motion de-
tector) actively monitors your vehicle every
time you arm the security system. If you
prefer, you can turn off the ultrasonic intru-
sion sensor when arming the security sys-
tem. To do so, push the lock button on the
key fob three times within 15 seconds of
arming the system (while the vehicle secu-
rity light is flashing rapidly).
The vehicle security alarm is designed to
protect your vehicle; however, you can create
conditions where the system will give you a
false alarm. If one of the previously described
arming sequences has occurred, the vehicle
security alarm will arm regardless of whetheryou are in the vehicle or not. If you remain in
the vehicle and open a door, the alarm will
sound. If this occurs, disarm the vehicle
security alarm.
If the vehicle security alarm is armed and the
battery becomes disconnected, the vehicle
security alarm will remain armed when the
battery is reconnected; the exterior lights will
flash, the horn will sound. If this occurs,
disarm the vehicle security alarm.
Security System Manual Override
The system will not arm if you lock the doors
using the manual door lock plunger.
DOORS
Keyless Enter-N-Go — Passive Entry
The Passive Entry system is an enhancement
to the vehicle’s key fob and a feature of
Keyless Enter-N-Go — Passive Entry. This
feature allows you to lock and unlock the
vehicle’s door(s) and fuel door without having
to push the key fob lock or unlock buttons.
GETTING TO KNOW YOUR VEHICLE
20

NOTE:
• In the event of a power malfunction to the
liftgate, an emergency liftgate latch release
can be used to open the liftgate. The emer-
gency liftgate latch release can be ac-
cessed through a snap-in cover located on
the liftgate trim panel.
• If liftgate is left open for an extended pe-
riod of time, the liftgate may need to be
closed manually to reset power liftgate
functionality.
WARNING!
During power operation, personal injury or
cargo damage may occur. Ensure the lift-
gate travel path is clear. Make sure the
liftgate is closed and latched before driv-
ing away.
NOTE:
• The power liftgate buttons will not operate
if the vehicle is in gear or the vehicle speed
is above 0 MPH (0 km/h).• The power liftgate will not operate in tem-
peratures below −22°F (−30°C) or tem-
peratures above 150° F (65° C). Be sure to
remove any buildup of snow or ice from the
liftgate before pushing any of the power
liftgate switches.
• If anything obstructs the power liftgate
while it is closing or opening, the liftgate
will automatically reverse to the closed or
open position, provided it meets sufficient
resistance.
• There are also pinch sensors attached to
the side of the liftgate. Light pressure any-
where along these strips will cause the
liftgate to return to the open position.
• If the liftgate is not fully open, push the
liftgate button on the key fob twice to
operate the liftgate.
• If the electronic liftgate release is pushed
while the power liftgate is closing, the lift-
gate will reverse to the full open position.
• If the electronic liftgate release is pushed
while the power liftgate is opening, the
liftgate motor will disengage to allow
manual operation.• If the power liftgate encounters multiple
obstructions within the same cycle, the
system will automatically stop and the lift-
gate must be opened or closed manually.
WARNING!
• Driving with the liftgate open can allow
poisonous exhaust gases into your ve-
hicle. You and your passengers could be
injured by these fumes. Keep the liftgate
closed when you are operating the ve-
hicle.
• If you are required to drive with the
liftgate open, make sure that all win-
dows are closed, and the climate control
blower switch is set at high speed. Do
not use the recirculation mode.
GETTING TO KNOW YOUR VEHICLE
56

Your vehicle has also been equipped with a
TPMS malfunction indicator to indicate when
the system is not operating properly. The
TPMS malfunction indicator is combined
with the low tire pressure telltale. When the
system detects a malfunction, the telltale will
flash for approximately one minute and then
remain continuously illuminated. This se-
quence will continue upon subsequent ve-
hicle start-ups as long as the malfunction
exists. When the malfunction indicator is
illuminated, the system may not be able to
detect or signal low tire pressure as intended.
TPMS malfunctions may occur for a variety of
reasons, including the installation of replace-
ment or alternate tires or wheels on the ve-
hicle that prevent the TPMS from functioning
properly. Always check the TPMS malfunc-
tion telltale after replacing one or more tires
or wheels on your vehicle to ensure that the
replacement or alternate tires and wheels
allow the TPMS to continue to function
properly.CAUTION!
The TPMS has been optimized for the
original equipment tires and wheels.
TPMS pressures and warning have been
established for the tire size equipped on
your vehicle. Undesirable system opera-
tion or sensor damage may result when
using replacement equipment that is not
of the same size, type, and/or style. After-
market wheels can cause sensor damage.
Using aftermarket tire sealants may cause
the Tire Pressure Monitoring System
(TPMS) sensor to become inoperable. Af-
ter using an aftermarket tire sealant it is
recommended that you take your vehicle to
your authorized dealer to have your sensor
function checked.
Yellow Indicator Lights
— Air Suspension Light — If
Equipped
This light will illuminate when the air suspen-
sion system is actively adjusting the ride
height.
— Forward Collision Warning Off Indi-
cator Light — If Equipped
This light indicates that Forward Collision
Warning is off.
— 4WD Low Indicator Light — If
Equipped
This light alerts the driver that the vehicle is
in the four-wheel drive LOW mode. The front
and rear driveshafts are mechanically locked
together forcing the front and rear wheels to
rotate at the same speed. Low range provides
a greater gear reduction ratio to provide in-
creased torque at the wheels.
Refer to “Four-Wheel Drive Operation — If
Equipped” in “Starting And Operating” for
further information on four-wheel drive op-
eration and proper use.
— Rear Fog Indicator — If Equipped
This indicator light will illuminate when the
rear fog lights are on.
73

ESC uses sensors in the vehicle to determine
the vehicle path intended by the driver and
compares it to the actual path of the vehicle.
When the actual path does not match the
intended path, ESC applies the brake of the
appropriate wheel to assist in counteracting
the oversteer or understeer condition.
• Oversteer — when the vehicle is turning
more than appropriate for the steering
wheel position.
• Understeer — when the vehicle is turning
less than appropriate for the steering wheel
position.
The “ESC Activation/Malfunction Indicator
Light” located in the instrument cluster will
start to flash as soon as the ESC system
becomes active. The “ESC Activation/
Malfunction Indicator Light” also flashes
when the TCS is active. If the “ESC
Activation/Malfunction Indicator Light” be-
gins to flash during acceleration, ease up on
the accelerator and apply as little throttle as
possible. Be sure to adapt your speed and
driving to the prevailing road conditions.WARNING!
• Electronic Stability Control (ESC) can-
not prevent the natural laws of physics
from acting on the vehicle, nor can it
increase the traction afforded by prevail-
ing road conditions. ESC cannot prevent
accidents, including those resulting
from excessive speed in turns, driving on
very slippery surfaces, or hydroplaning.
ESC also cannot prevent accidents re-
sulting from loss of vehicle control due
to inappropriate driver input for the con-
ditions. Only a safe, attentive, and skill-
ful driver can prevent accidents. The
capabilities of an ESC equipped vehicle
must never be exploited in a reckless or
dangerous manner which could jeopar-
dize the user’s safety or the safety of
others.
• Vehicle modifications, or failure to prop-
erly maintain your vehicle, may change
the handling characteristics of your ve-
hicle, and may negatively affect the per-
formance of the ESC system. Changes to
the steering system, suspension, brak-
WARNING!
ing system, tire type and size or wheel
size may adversely affect ESC perfor-
mance. Improperly inflated and un-
evenly worn tires may also degrade ESC
performance. Any vehicle modification
or poor vehicle maintenance that re-
duces the effectiveness of the ESC sys-
tem can increase the risk of loss of
vehicle control, vehicle rollover, per-
sonal injury and death.
ESC Operating Modes
NOTE:
Depending upon model and mode of opera-
tion, the ESC system may have multiple op-
erating modes.
ESC On
This is the normal operating mode for the
ESC. Whenever the vehicle is started, the
ESC system will be in this mode. This mode
SAFETY
84

brake and may also reduce engine power to
lessen the chance that wheel lift will occur.
ERM can only reduce the chance of wheel lift
occurring during severe or evasive driving
maneuvers; it cannot prevent wheel lift due to
other factors, such as road conditions, leav-
ing the roadway, or striking objects or other
vehicles.
NOTE:
ERM is disabled anytime the ESC is in “Full
Off” mode (if equipped). Refer to “Electronic
Stability Control (ESC)” in this section for a
complete explanation of the available ESC
modes.
WARNING!
Many factors, such as vehicle loading,
road conditions and driving conditions,
influence the chance that wheel lift or
rollover may occur. ERM cannot prevent all
wheel lift or roll overs, especially those
that involve leaving the roadway or striking
objects or other vehicles. The capabilities
WARNING!
of an ERM-equipped vehicle must never
be exploited in a reckless or dangerous
manner which could jeopardize the user's
safety or the safety of others.
Trailer Sway Control (TSC)
TSC uses sensors in the vehicle to recognize
an excessively swaying trailer and will take
the appropriate actions to attempt to stop the
sway. TSC will become active automatically
once an excessively swaying trailer is recog-
nized.
NOTE:
TSC cannot stop all trailers from swaying.
Always use caution when towing a trailer and
follow the trailer tongue weight recommenda-
tions. Refer to “Trailer Towing” in “Starting
And Operating” for further information.
When TSC is functioning, the “ESC
Activation/Malfunction Indicator Light” will
flash, the engine power may be reduced andyou may feel the brakes being applied to
individual wheels to attempt to stop the
trailer from swaying. TSC is disabled when
the ESC system is in the “Partial Off” or “Full
Off” modes.
WARNING!
If TSC activates while driving, slow the
vehicle down, stop at the nearest safe
location, and adjust the trailer load to
eliminate trailer sway.
Ready Alert Braking (RAB)
Ready Alert Braking may reduce the time
required to reach full braking during emer-
gency braking situations. It anticipates when
an emergency braking situation may occur by
monitoring how fast the throttle is released by
the driver. The EBC will prepare the brake
system for a panic stop.
87

AUXILIARY DRIVING
SYSTEMS
Blind Spot Monitoring
The Blind Spot Monitoring (BSM) system
uses two radar-based sensors, located inside
the rear bumper fascia, to detect Highway
licensable vehicles (automobiles, trucks, mo-
torcycles etc.) that enter the blind spot zones
from the rear/front/side of the vehicle.
The BSM detection zone covers approxi-
mately one lane width on both sides of the
vehicle 12 ft (3.8 m). The zone length starts
at the outside rear view mirror and extends
approximately 10 ft (3 m) beyond the rear
bumper of the vehicle. The BSM system
monitors the detection zones on both sides of
the vehicle when the vehicle speed reaches
approximately 6 mph (10 km/h) or higher and
will alert the driver of vehicles in these areas.When the vehicle is started, the BSM warning
light will momentarily illuminate in both out-
side rear view mirrors to let the driver know
that the system is operational. The BSM
system sensors operate when the vehicle is in
any forward gear or REVERSE and enters
stand by mode when the vehicle is in PARK.
The BSM warning light, located in the out-
side mirrors, will illuminate if a vehicle
moves into a blind spot zone.The BSM system can also be configured to
sound an audible (chime) alert and mute the
radio to notify you of objects that have en-
tered the detection zones.
Rear Cross Path (RCP)
The Rear Cross Path (RCP) feature is in-
tended to aid the driver when backing out of
parking spaces where the vision of oncoming
vehicles may be blocked. Proceed slowly and
cautiously out of the parking space until the
Rear Detection Zones
Blind Spot Warning Light
SAFETY
92

rear end of the vehicle is exposed. The RCP
system will then have a clear view of the cross
traffic and if an oncoming vehicle is de-
tected, will alert the driver. When RCP is on
and the vehicle is in REVERSE, the driver is
alerted using both the visual and audible
alarms, including reducing the radio volume.
Refer to “Blind Spot Monitoring” in “Safety”
in the Owner's Manual for more information.
Modes Of Operation
Three selectable modes of operation are
available in the Uconnect System. Refer to
“Uconnect Settings” in “Multimedia” in the
Owner’s Manual for further information.
Blind Spot Alert Lights Only
When operating in Blind Spot Alert mode, the
BSM system will provide a visual alert in the
appropriate side view mirror based on a de-
tected object. However, when the system is
operating in Rear Cross Path (RCP) mode, the
system will respond with both visual and
audible alerts when a detected object is pres-
ent. Whenever an audible alert is requested,
the radio is muted.Blind Spot Alert Lights/Chime
When operating in Blind Spot Alert Lights/
Chime mode, the BSM system will provide a
visual alert in the appropriate side view mirror
based on a detected object. If the turn signal
is then activated, and it corresponds to an
alert present on that side of the vehicle, an
audible chime will also be sounded. When-
ever a turn signal and detected object are
present on the same side at the same time,
both the visual and audible alerts will be
issued. In addition to the audible alert the
radio (if on) will also be muted.
NOTE:
Whenever an audible alert is requested by the
BSM system, the radio is also muted.
When the system is in RCP, the system shall
respond with both visual and audible alerts
when a detected object is present. Whenever
an audible alert is requested, the radio is also
muted. Turn/hazard signal status is ignored;
the RCP state always requests the chime.Blind Spot Alert Off
When the BSM system is turned off there will
be no visual or audible alerts from either the
BSM or RCP systems.
NOTE:
The BSM system will store the current oper-
ating mode when the vehicle is shut off. Each
time the vehicle is started the previously
stored mode will be recalled and used.
Forward Collision Warning (FCW)
The Forward Collision Warning (FCW) system pro-
vides the driver with audible and visual warnings
within the instrument cluster display to warn the
driver when it detects a potential frontal collision.
The warnings are intended to provide the driver
with enough time to react, avoid or mitigate the
potential collision.
NOTE:
FCW monitors the information from the for-
ward looking sensors as well as the Electronic
Brake Controller (EBC), to calculate the prob-
ability of a forward collision. When the sys-
tem determines that a forward collision is
probable, the driver will be provided with
audible and visual warnings.
93