2012 JEEP GRAND CHEROKEE suspension

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.
•When the automatic transmission is in PARK, RE-
VERSE or NEUTRAL.
•When pushing the RES +button without a previously
set speed in memory.
204 UNDERSTANDING THE FEATURES OF YOUR VEHICLE

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
•Lights On
•Key In Ignition Lights On
•Ignition Or Accessory On
•Ignition Or Accessory On. Lights On
•Turn Signal On
•Park Assist On
•Warning Object Detected
•Remote Start Aborted — Door ajar
•Remote Start Aborted — Hood ajar
•Remote Start Aborted — L/Gate ajar
•Remote Start Aborted — Fuel low
•Remote Start Disabled — Start Vehicle to Reset
•Remote Start Active — Insert Key and Turn to Run
•Remote Start Active — Push Start Button
•Memory 1 Profile Set
•Memory 2 Profile Set
•Memory System Unavailable — Not In Park
•Memory System Unavailable — Seatbelt Buckled
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•Raising Vehicle Ride Height (with icon)
•Lowering Vehicle Ride Height (with icon)
•Normal Vehicle Ride Height — This message is dis-
played (for 5 seconds) when the vehicle has achieved
the Normal Vehicle Ride Height.
•Off Road Ride Height Level 1 — This message is
displayed (for 5 seconds) when the vehicle has
achieved the Off Road Height Level 1.
•Off Road Ride Height Level 2 — This message is
displayed (for 5 seconds) when the vehicle has
achieved the Off Road Height Level 2.
•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.
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UNDERSTANDING YOUR INSTRUMENT PANEL 303

•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
•Aerodynamic Ride Height — This is displayed (for
5 seconds) when the vehicle has achieved the Aerody-
namic Height.
EVIC White Telltale Lights
This area will show reconfigurable white caution tell-
tales. These telltales include:
•Shift Lever Status
The shift lever status “P,R,N,D,L,5,4,3,2,1” are displayed
indicating the shift lever position. Telltales “5,4,3,2,1”
indicate the Electronic Range Select (ERS) feature has
been engaged and the gear selected is displayed. For
further information on ERS, refer to “Starting And Oper-
ating”
•Electronic Speed Control ON This light will turn on when the electronic
speed control is ON. For further information,
refer to “Electronic Speed Control” in “Under-
standing The Features Of Your Vehicle.”
304 UNDERSTANDING YOUR INSTRUMENT PANEL

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) OFFThis 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”.
•Air Suspension DownThe 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 LightWhen 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
306 UNDERSTANDING YOUR INSTRUMENT PANEL

SELEC-TERRAIN™ — IF EQUIPPED
Description
Selec-Terrain™ combines the capabilities of the vehicle
control systems, along with driver input, to provide the
best performance for all terrains.Selec-Terrain™ consists of the following positions:
•Sport
– Dry weather, on-road calibration. Only avail-
able in 4WD High range. Performance based tuning
that provides a rear wheel drive feel but with im-
proved handling and acceleration over a two-wheel
drive vehicle. The Electronic Stability Control will set
to allow more driver control of vehicle while maintain-
ing safe handling controls. The vehicle will lower (if
equipped with Air Suspension) to Aero Mode in High
Range. 4WD Low is not available in SPORT mode, if
4WD Low is selected the Selec-Terrain™ will auto-
matically switch back to AUTO.
•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
Selec-Terrain™ Switch
446 STARTING AND OPERATING

with air suspension, the level will change to Normal
Ride Height (NRH) if the transfer case is in high range.
The level will change to Off-Road 1 if the transfer case
is in Low range.
•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. If equipped with air suspension, the
level will change to NRH.
•Sand/Mud – Off road calibration for use on low
traction surfaces such as mud, sand, or wet grass.
Driveline is maximized for traction. Some binding
may be felt on less forgiving surfaces. The electronic
brake controls are set to limit traction control manage-
ment 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. Activate the Hill De-
scent Control for steep downhill control. Use for low
speed obstacles such as large rocks, deep ruts, etc. If
equipped with air 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.
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Electronic Vehicle Information Center (EVIC)
Display Messages
When the appropriate conditions exist, a message will
appear in the EVIC display. Refer to “Electronic Vehicle
Information Center (EVIC)” in “Understanding Your
Instrument Panel” for further information.
QUADRA-LIFT™ — IF EQUIPPED
Description
The Quadra-Lift™ air suspension system provides full
time load leveling capability along with the benefit of
being able to adjust vehicle height by the push of a
button.
Selec-Terrain™ Switch
1 — Up Button
2 — Down Button
3 — Park Mode Indicator Lamp
4 — Normal Ride Height Indicator Lamp
5 — Off-Road 1 Indicator Lamp
6 — Off-Road 2 Indicator Lamp
448 STARTING AND OPERATING