suspension JEEP GRAND CHEROKEE 2015 WK2 / 4.G SRT Owners Manual

NOTE:Any chassis/suspension or tire size modifications
to the vehicle will effect the performance of the Adaptive
Cruise Control and Forward Collision Warning System.
Activating Adaptive Cruise Control (ACC)
You can only engage ACC if the vehicle speed is above
0 mph (0 km/h).
The minimum Set Speed for the ACC system is 20 mph
(32 km/h).
When the system is turned on and in the READY state,
the Driver Information Display (DID) displays “ACC
Ready.”
When the system is OFF, the DID displays “Adaptive
Cruise Control (ACC) Off.”
NOTE:You cannot engage ACC under the following
conditions:
•When in Four-Wheel Drive Low.
Adaptive Cruise Control Buttons1 — NORMAL (FIXED SPEED) CRUISE CONTROL ON/OFF
2 — SET+/ACCEL
3 — RESUME
4 — SET-/DECEL
5 — DISTANCE SETTING — INCREASE
6 — ADAPTIVE CRUISE CONTROL (ACC) ON/OFF
7 — DISTANCE SETTING — DECREASE
8 — CANCEL 190 UNDERSTANDING THE FEATURES OF YOUR VEHICLE

6. Selectable Information (Compass, Temp, Range to
Empty, Trip A, Trip B, Average Fuel Economy, Current
Fuel Economy)
7. Air Suspension Status — If Equipped
8. 4WD Status — Status
The main display area will normally display the main
menu or the screens of a selected feature of the main
menu. The main display area also displays “pop up”
messages that consist of approximately 60 possible warn-
ing or information messages. These pop up messages fall
into several categories:
•Five Second Stored Messages
When the appropriate conditions occur, this type of
message takes control of the main display area for five
seconds and then returns to the previous screen. Most of
the messages of this type are then stored (as long as the
condition that activated it remains active) and can bereviewed from the “Messages” main menu item. Ex-
amples of this message type are “Right Front Turn Signal
Lamp Out” and “Low Tire Pressure.”
•Unstored Messages
This message type is displayed indefinitely or until the
condition that activated the message is cleared. Examples
of this message type are “Turn Signal On” (if a turn signal
is left on) and “Lights On” (if driver leaves the vehicle).
•Unstored Messages Until RUN
These messages deal primarily with the Remote Start
feature. This message type is displayed until the ignition
is in the RUN state. Examples of this message type are
“Remote Start Aborted - Door Ajar” and “Press Brake
Pedal and Push Button to Start.”
•Five Second Unstored Messages
When the appropriate conditions occur, this type of
message takes control of the main display area for five
298 UNDERSTANDING YOUR INSTRUMENT PANEL

•Shift to Neutral then Drive or Reverse
•Autostick Unavailable Service Required
•Automatic Unavailable Use Autostick Service Req.
•Transmission Getting Hot Press Brake
•Trans. Hot Stop Safely Shift To Park Wait to Cool
•Transmission Cool Ready to Drive
•Service Transmission
•Service Shifter
•Engage Park Brake To Prevent Rolling
•Transmission Too Cold Idle With Engine On
•Washer Fluid Low
•Service Air Suspension System
•Normal Ride Height Achieved•Aerodynamic Ride Height Achieved
•Off Road 1 Ride Height Achieved
•Off Road 2 Ride Height Achieved
•Entry/Exit Ride Height Achieved
•Selected Ride Height Not Permitted
•Service Air Suspension System Immediately
•Reduce Speed To Maintain Selected Ride Height
•Air Suspension System Cooling Down Please Wait
•Vehicle Cannot Be Lowered Door Open
•Off Road 2 Watch For Clearance
•Entry/Exit Watch For Clearance
302 UNDERSTANDING YOUR INSTRUMENT PANEL

•Air Suspension Temporarily Disabled For Jacking And
Tire Change
•Battery Low Start Engine To Change Ride Height
The Reconfigurable Telltales section is divided into the
white telltales area on the right, amber telltales in the
middle, and red telltales on the left.
DID White Telltales
This area will show reconfigurable white caution tell-
tales. These telltales include:
•Cruise Ready
This telltale will turn on to indicate that the
Adaptive Cruise Control system is ready to be
activated.•Selec — Speed
This telltale will turn on to indicate that the
Selec-Speed is activated.
•Adaptive Cruise Control Ready and Adaptive Cruise
Control Set
•This telltale will turn on to indicate that the ACC is
ready and has been set to the desired speed.
DID Amber Telltales
This area will show reconfigurable amber caution tell-
tales. These telltales include:
•Low Fuel Telltale
When the fuel level reaches approximately 3.0 gal
(11.0 L), this light will turn on and remain on until
fuel is added.
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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 systemwill be in Firm mode and the transmission will be in
SPORT shift mode then and a green flag will light up
in the instrument cluster. The transmission will pro-
vide a more aggressive shifting pattern (Refer to
“Paddle Shift Mode” 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. This feature will
reset to AUTO upon an ignition cycle.
•Auto– Fully automatic full time four-wheel drive
operation can be used on and off road. Balances
Selec-Track™ Switch
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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 transmission will be in SPORT shift mode and
provide a more aggressive shifting pattern. Refer to
“Paddle Shift Mode” in “Starting And Operating”
for further information.
•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.
•This feature will reset to AUTO on an ignition cycle.•To w– Use this mode for towing. Vehicle suspension
will go to Firm mode. Trailer sway control is enabled
in the ESC system. The terrain switch will remain in
this position through an ignition cycle until the cus-
tomer cycles into another position. This feature will
reset to AUTO upon an ignition cycle.
Active Damping System
This vehicle is equipped with an electronic controlled
damping system. This system reduces body roll and pitch
in many driving situations including cornering, accelera-
tion 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.
418 STARTING AND OPERATING

•Full Firm(Available in TRACK mode) — Provides a
full firm suspension for an aggressive track experience.
Launch Mode — If Equipped
This system maximizes acceleration traction for straight
line racing. To use Launch Mode please follow the steps
below:
1. Bring vehicle to complete stop on a level track surface
with the engine running.
2. Set the steering wheel for straight ahead driving.
3. Fully press the brake pedal.
4. Press and release the “LAUNCH” Button.
5. Press the accelerator pedal to the floor.
NOTE:If the cluster launch DID message indicates all
conditions are correct for launch and the throttle is
pressed to the floor quickly (within approximately 1/2second) the system will hold the engine speed to a preset
speed (below the engine rev limiter speed).
6. Release the brake pedal.
Pressing the launch control button when launch control is
active will deactivate launch control.
NOTE:
•Launch Mode brings the engine to optimum RPM and
waits for the driver to release the brake. Launch Mode
then uses engine throttle only to achieve controlled
wheelslip for maximum acceleration through 62 mph
(100 km/h).
•Launch Mode can be initiated in any of the Select Trac
Modes.
•Launch Mode is not available until the 500 mile
(805 km) break-in has been achieved.
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CAUTION!
To avoid damage to your vehicle or tires, observe the
following precautions:
•Because of restricted traction device clearance be-
tween tires and other suspension components, it is
important that only traction devices in good condi-
tion are used. Broken devices can cause serious
damage. Stop the vehicle immediately if noise
occurs that could indicate device breakage. Remove
the damaged parts of the device before further use.
•Install device as tightly as possible and then re-
tighten after driving about ½ mile (0.8 km).
•Do not exceed 30 mph (48 km/h).
•Drive cautiously and avoid severe turns and large
bumps, especially with a loaded vehicle.
•Do not drive for a prolonged period on dry pave-
ment.
(Continued)
CAUTION!(Continued)
•Observe the traction device manufacturer ’s instruc-
tions on the method of installation, operating
speed, and conditions for use. Always use the
suggested operating speed of the device manufac-
turer ’s if it is less than 30 mph (48 km/h).
•Do not use traction devices on a compact spare tire.
TIRE ROTATION RECOMMENDATIONS
The tires on the front and rear of your vehicle operate at
different loads and perform different steering, handling,
and braking functions. For these reasons, they wear at
unequal rates.
These effects can be reduced by timely rotation of tires.
The benefits of rotation are especially worthwhile with
aggressive tread designs such as those on On/Off-Road
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VEHICLE LOADING
Certification Label
As required by National Highway Traffic Safety Admin-
istration regulations, your vehicle has a certification label
affixed to the driver’s side door or pillar.
This label contains the month and year of manufacture,
Gross Vehicle Weight Rating (GVWR), Gross Axle Weight
Rating (GAWR) front and rear, and Vehicle Identification
Number (VIN). A Month-Day-Hour (MDH) number is
included on this label and indicates the Month, Day and
Hour of manufacture. The bar code that appears on the
bottom of the label is your VIN.
Gross Vehicle Weight Rating (GVWR)
The GVWR is the total permissible weight of your vehicle
including driver, passengers, vehicle, options and cargo.
The label also specifies maximum capacities of front andrear axle systems (GAWR). Total load must be limited so
GVWR and front and rear GAWR are not exceeded.
Payload
The payload of a vehicle is defined as the allowable load
weight a truck can carry, including the weight of the
driver, all passengers, options and cargo.
Gross Axle Weight Rating (GAWR)
The GAWR is the maximum permissible load on the front
and rear axles. The load must be distributed in the cargo
area so that the GAWR of each axle is not exceeded.
Each axle GAWR is determined by the components in the
system with the lowest load carrying capacity (axle,
springs, tires or wheels). Heavier axles or suspension
components sometimes specified by purchasers for in-
creased durability does not necessarily increase the vehi-
cle’s GVWR.
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WARNING!
Improper towing can lead to a collision. Follow these
guidelines to make your trailer towing as safe as
possible:
•Make certain that the load is secured in the trailer
and will not shift during travel. When trailering
cargo that is not fully secured, dynamic load shifts
can occur that may be difficult for the driver to
control. You could lose control of your vehicle and
have a collision.
•When hauling cargo or towing a trailer, do not
overload your vehicle or trailer. Overloading can
cause a loss of control, poor performance or dam-
age to brakes, axle, engine, transmission, steering,
suspension, chassis structure or tires.
(Continued)
WARNING!(Continued)
•Safety chains must always be used between your
vehicle and trailer. Always connect the chains to
the hook retainers of the vehicle hitch. Cross the
chains under the trailer tongue and allow enough
slack for turning corners.
•Vehicles with trailers should not be parked on a
grade. When parking, apply the parking brake on
the tow vehicle. Put the tow vehicle transmission in
PARK. For four-wheel drive vehicles, make sure
the transfer case is not in NEUTRAL. Always,
block orchockthe trailer wheels.
•GCWR must not be exceeded.
(Continued)
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