2012 JEEP GRAND CHEROKEE suspension

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
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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
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•Vehicle Lowered To Entry/Exit (Park) Height — This
message is displayed (for 5 seconds) when the vehicle
has achieved the Park Height.
•Entry/Exit (Park) Height in Progress — This message
is displayed (for 5 seconds) when the request is made
to go into Entry/Exit Height while the vehicle speed is
between 15 and 25 mph. This shows that the request
has been recognized and will lower to Entry/Exit
height when vehicle is below 15 mph.
•Service Air Suspension System — This is displayed
when a fault has occurred in the system. The system
will have limited operation at that point.
•Immediate Air Suspension Service/Repair Required
— This is displayed when a fault has occurred in the
system which results in a complete system shutdown.
The system will be non operational at that point.
•Reduce Speed To Maintain Selected Ride Height —
This message is displayed in advance warning to the
driver that the vehicle will be moved to the next lower
preset position unless the speed is reduced.
•Selected Ride Height Not Permitted — The vehicle
speed is too high to enter one of the preset levels
(Entry/Exit Level/Off Road Ride Height Level 1/Off
Road Ride Height Level 2).
•Air Suspension System Cooling Down – Please Wait —
This message is displayed if the compressor tempera-
ture level is too high. Level control is suspended until
the compressor has cooled down.
•Vehicle Cannot Be Lowered – Door Open — This
message is displayed if a door or the liftgate is ajar and
level control is suspended.
•Air Suspension Temporarily Disabled For Jacking And
Tire Change
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•Power Steering System Over Temperature — If
Equipped
If the “POWER STEERING SYSTEM OVER
TEMP” message and a icon are displayed on
the EVIC screen, it indicates that extreme steer-
ing maneuvers may have occurred, which
caused an over temperature condition in the power
steering system. You will lose power steering assistance
momentarily until the over temperature condition no
longer exists. Once driving conditions are safe, then pull
over and let vehicle idle. After five minutes, the system
will cool and return to normal operation. Refer to “Power
Steering” in “Starting and Operating” for further infor-
mation.
NOTE:
•Even if power steering assistance is no longer opera-
tional, it is still possible to steer the vehicle. Under
these conditions there will be a substantial increase in
steering effort, especially at very low vehicle speeds
and during parking maneuvers.
•If the condition persists, see your authorized dealer for
service.
EVIC Amber Telltale Lights
This area will show reconfigurable amber caution tell-
tales. These telltales include:
•Forward Collision Warning (FCW) OFF
This light warns the driver of a potential colli-
sion with the vehicle in front and prompts the
driver to take action in order to avoid the
collision. For further information, refer to
“Adaptive Cruise Control (ACC)” in “Understanding
The Features Of Your Vehicle.”
•Air Suspension Up
The air suspension up telltale will illuminate
when the air suspension is in use. For further
information, refer to “Starting And Operating”.
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UNDERSTANDING YOUR INSTRUMENT PANEL 303

•Air Suspension Down
The air suspension down telltale will illumi-
nate when the air suspension is in use. For
further information, refer to “Starting And Op-
erating”.
•Low Fuel Light
When the fuel level reaches approximately 3.0 gal
(11.0 L) this light will turn on, and remain on until
fuel is added.
•Loose Gascap Indicator
If the vehicle diagnostic system determines
that the fuel filler cap is loose, improperly
installed, or damaged, a loose gascap indicator
will display in the telltale display area. Tighten
the fuel filler cap properly and press the SELECT button
to turn off the message. If the problem continues, the
message will appear the next time the vehicle is started.A loose, improperly installed, or damaged fuel filler cap
may also turn on the Malfunction Indicator Light (MIL).
•Windshield Washer Fluid Low Indicator
This light will turn on to indicate the wind-
shield washer fluid is low.
•SERV 4WD
The SERV 4WD light monitors the electric shift
4WD system. If the SERV 4WD light stays on or
comes on during driving, it means that the
4WD system is not functioning properly and
that service is required.
304 UNDERSTANDING YOUR INSTRUMENT PANEL

SELEC-TRACK™ — IF EQUIPPED
Description
Selec-Track™ combines the capabilities of the vehicle
control systems, along with driver input, to provide the
best performance for all terrains.Selec-Track™ consists of the following positions:
•Sport– Dry weather, on-road calibration. Performance
based tuning that provides a rear wheel drive feel but
with improved handling and acceleration over a two-
wheel drive vehicle. The customer has the option of
going to partial ESC. The active suspension system
will be in Semi Firm mode, and a green flag will light
up in the instrument cluster. The transmission will
provide a more aggressive shifting pattern (Refer to
“AutoStick” in “Starting And Operating” for further
information). This feature will reset to AUTO on an
ignition cycle.
•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.
Selec-Track™ Switch
392 STARTING AND OPERATING

•Auto– Fully automatic full time four-wheel drive
operation can be used on and off road. Balances
traction with seamless steering feel to provide im-
proved handling and acceleration over two-wheel
drive vehicles. The active suspension system will be in
Touring Mode.
•Track– Track road calibration for use on high traction
surfaces. Driveline is maximized for traction. Some
binding may be felt on less forgiving surfaces. The
electronic brake controls are set to Partial OFF to limit
traction control management of throttle and wheel
spin.
The customer has the option of going to FULL OFF
with no interaction from the ESC System. The active
suspension system will be in Full Firm mode. A green
flag will light up in the instrument cluster.
•To w– Use this mode for towing. Vehicle suspension
will go to Firm mode and peak power will be limitedin the engine controls. When the suspension is in Firm
Mode, a green flag will light up in the cluster. Trailer
sway control is enabled in the ESC system. The terrain
switch will remain in this position through an ignition
cycle until the customer cycles into another position.
Active Dampening System
This vehicle is equipped with an electronic controlled
dampening system. This system reduces body roll and
pitch in many driving situations including cornering,
acceleration and braking. There are 3 modes:
•Touring Mode (Available in terrain positions AUTO
and SNOW) — Used during highway speeds where a
touring suspension feel is desired.
•Firm Mode (Available in terrain positions SPORT and
TOW) — Provides a firm suspension for better han-
dling.
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STARTING AND OPERATING 393

•Full Firm (Available in TRACK mode) — Provides a
full firm suspension for an aggressive track
experience.
DRIVING THROUGH WATER
Driving through water more than a few inches/
centimeters deep will require extra caution to ensure
safety and prevent damage to your vehicle.
CAUTION!
•Due to lower ground clearance, driving your ve-
hicle up steep driveways, approach ramps or near
parking blocks may cause damage to the front
fascia and ground effects.
•Driving through snow more than 4 inches
(100 mm) deep may cause damage to the front
fascia and ground effects.
Flowing/Rising Water
WARNING!
Do not drive on, or cross, a road or a path where
water is flowing and/or rising (as in storm run-off).
Flowing water can wear away the road or path’s
surface and cause your vehicle to sink into deeper
water. Furthermore, flowing and/or rising water can
carry your vehicle away swiftly. Failure to follow this
warning may result in injuries that are serious or
fatal to you, your passengers, and others around you.
Shallow Standing Water
Although your vehicle is capable of driving through
shallow standing water, consider the following Caution
and Warning before doing so.
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