2012 JEEP GRAND CHEROKEE brakes

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 modifications to the
vehicle will effect the performance of the Adaptive Cruise
Control.
Activating Adaptive Cruise Control (ACC)
You can only activate ACC if the vehicle speed is above
20 mph (32 km/h).
When the system is turned on and in the READY state,
the Electronic Vehicle Information Center (EVIC) dis-
plays “Adaptive Cruise Ready.”
When the system is OFF, the EVIC displays “Adaptive
Cruise Control Off.”
NOTE:You cannot enable ACC under the following
conditions:
•When in Four-Wheel Drive Low.
•When you apply the brakes.
•When the parking brake is set.
1 — DISTANCE SETTING
2 — RES+
3 — SET-
4 — CANCEL
5 — ON/OFF
6 — MODE 204 UNDERSTANDING THE FEATURES OF YOUR VEHICLE

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 EVIC and a chime will sound
while ACC continues to apply its maximum braking
capacity. When this occurs, you should immediately
apply the brakes as needed to maintain a safe distance
from the vehicle ahead.
The ACC Systems provides Overtake Aid when passing
on the left hand side only. When driving with ACC
engaged and following a Target vehicle, the system willprovide an additional acceleration based on your current
speed. The acceleration is triggered by indicating a left
turn signal.
Adaptive Cruise Control (ACC) Menu
The EVIC displays the current ACC system settings. The
EVIC is located in the upper part of the instrument
Brake Alert
212 UNDERSTANDING THE FEATURES OF YOUR VEHICLE

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.
Lane Changing
ACC will 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 will not detect a vehicle until
it is completely in the lane. There will not be sufficient
distance to the lane-changing vehicle. Always be atten-
tive and ready to apply the brakes if necessary.
220 UNDERSTANDING THE FEATURES OF YOUR VEHICLE

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.
General Information
FCC Requirements For Vehicular Radar Systems
Classification Specifications:
47 C.F.R. Part 15
47 C.F.R Part 15.515
Normal (Fixed Speed) Cruise Control Mode
In addition to Adaptive Cruise Control mode, a normal
(fixed speed) Cruise Control mode is available for cruis-
ing at fixed speeds. The normal Cruise Control mode is
designed to maintain a set cruising speed without requir-
ing the driver to operate the accelerator. Cruise Control
can only be operated if the vehicle speed is above 20 mph
(32 km/h).
To change between the different cruise modes, press the
MODE button when the system is in either the OFF,
READY or SET state. Pressing of the MODE button in any
state will result in changing to the new Mode in the OFF
state.
222 UNDERSTANDING THE FEATURES OF YOUR VEHICLE

The light also will turn on when the parking brake is
applied with the ignition switch in the ON/RUN posi-
tion.
NOTE:This light shows only that the parking brake is
applied. It does not show the degree of brake application.
15. Anti-Lock Brake (ABS) Light
This light monitors the Anti-Lock Brake System
(ABS). The light will turn on when the ignition
switch is turned to the ON/RUN position and
may stay on for as long as four seconds.
If the ABS light remains on or turns on while driving, it
indicates that the Anti-Lock portion of the brake system
is not functioning and that service is required. However,
the conventional brake system will continue to operate
normally if the BRAKE warning light is not on.
If the ABS light is on, the brake system should be serviced
as soon as possible to restore the benefits of Anti-Lockbrakes. If the ABS light does not turn on when the
ignition switch is turned to the ON/RUN position, have
the light inspected by an authorized dealer.
16. Speedometer
Indicates vehicle speed.
17. Sport Mode
This light will illuminate when the sport mode
or track mode is selected. These modes provide
performance based tuning with improved han-
dling and acceleration through an electronic
controlled dampening system. This system reduces body
roll and pitch in many driving situations including
cornering, acceleration and braking.
18. Fuel Door Reminder
The fuel pump symbol points to the side of the
vehicle where the fuel door is located.
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UNDERSTANDING YOUR INSTRUMENT PANEL 291

momentarily. Refer to “Adaptive Cruise Control
(ACC)” in “Understanding The Features Of Your
Vehicle” (if equipped).
•Brake — If the ACC system predicts that its maximum
braking level is not sufficient to maintain the set
distance, this message will flash and a chime will
sound while ACC continues to apply its maximum
braking capacity. When this occurs, you should imme-
diately apply the brakes as needed to maintain a safe
distance from the vehicle ahead. Refer to “Adaptive
Cruise Control (ACC)” in “Understanding The Fea-
tures Of Your Vehicle” (if equipped).
•Clean Radar Sensor in the Front of Vehicle — If the
ACC system deactivates due to performance limiting
conditions. Refer to “Adaptive Cruise Control (ACC)”
in “Understanding The Features Of Your Vehicle” (if
equipped).
•ACC/FCW Unavailable Vehicle System Error — If the
ACC system turns off due to a temporary malfunction
that limits functionality. Refer to “Adaptive Cruise
Control (ACC)” in “Understanding The Features Of
Your Vehicle” (if equipped).
•ACC/FCW Unavailable Service Radar Sensor — If the
ACC system turns off due to an internal system fault
that requires service from an authorized dealer. Refer
to “Adaptive Cruise Control (ACC)” in “Understand-
ing The Features Of Your Vehicle” (if equipped).
•Cruise Off When Park Brake is On
•ACC Cancelled Below Min. Speed.
•Coolant low
•Service air suspension system
•Oil change due
•Key in ignition
298 UNDERSTANDING YOUR INSTRUMENT PANEL

STARTING PROCEDURES
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!
•When leaving the vehicle, always remove the key
fob from the ignition and lock your vehicle.
•Never leave children alone in a vehicle, or with
access to an unlocked vehicle. Allowing children
to be 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 shift lever.
(Continued)
WARNING! (Continued)
•Do not leave the key fob in or near the vehicle, and
do not leave Keyless Enter-N-Go in the ACC or
ON/RUN mode. A child could operate power win-
dows, other controls, or move the vehicle.
Automatic Transmission
The shift lever must be in the NEUTRAL or PARK
position before you can start the engine. Apply the brakes
before shifting into any driving gear.
CAUTION!
Damage to the transmission may occur if the follow-
ing precautions are not observed:
•Shift into PARK only after the vehicle has come to
a complete stop.
(Continued)
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STARTING AND OPERATING 375

WARNING! (Continued)
•Unintended movement of a vehicle could injure
those in or near the vehicle. As with all vehicles,
you should never exit a vehicle while the engine is
running. Before exiting a vehicle, always apply the
parking brake, shift the transmission into PARK,
and remove the key fob. Once the key fob is
removed, the shift lever is locked in the PARK
position, securing the vehicle against unwanted
movement. Furthermore, you should never leave
unattended children inside a vehicle.
Key Ignition Park Interlock
This vehicle is equipped with a Key Ignition Park Inter-
lock which requires the shift lever to be placed in PARK
before the ignition switch can be turned to the LOCK/
OFF position. The key fob can only be removed from the
ignition when the ignition is in the LOCK/OFF position,
and once removed the shift lever is locked in PARK.
Brake/Transmission Shift Interlock System
This vehicle is equipped with a Brake Transmission Shift
Interlock (BTSI) system that holds the shift lever in the
PARK position unless the brakes are applied. To move
the shift lever out of the PARK position, the ignition
switch must be turned to the ON/RUN position (engine
running or not) and the brake pedal must be pressed.
Five-Speed Automatic Transmission
The shift lever position display (located in the instrument
panel cluster) indicates the transmission gear range. You
must press the brake pedal to move the shift lever out of
the PARK position (refer to “Brake/Transmission Shift
Interlock System” in this section). To drive, move the shift
lever from PARK or NEUTRAL to the DRIVE position.
The electronically-controlled transmission provides a
precise shift schedule. The transmission electronics are
self-calibrating; therefore, the first few shifts on a new
382 STARTING AND OPERATING