2016 JEEP GRAND CHEROKEE wheel

FOUR-WHEEL DRIVE OPERATION
Quadra-Trac I Operating Instructions/Precautions
— If Equipped
The Quadra-Trac I is a single-speed (HI range only)
transfer case, which provides convenient full-time four-
wheel drive. No driver interaction is required. The Brake
Traction Control (BTC) System, which combines standard
ABS and Traction Control, provides resistance to any
wheel that is slipping to allow additional torque transfer
to wheels with traction.
NOTE:The Quadra-Trac I system is not appropriate for
conditions where 4WD LOW range is recommended.
Refer to “Off-Road Driving Tips” in “Starting And Op-
erating” for further information.
Quadra-Trac II Operating Instructions/Precautions
— If Equipped
The Quadra-Trac II transfer case is fully automatic in the
normal driving 4WD AUTO mode. The Quadra-Trac II
transfer case provides three mode positions:
• 4WD HI
• NEUTRAL
• 4WD LOW
This transfer case is fully automatic in the 4WD HI mode.
When additional traction is required, the 4WD LOW
position can be used to lock the front and rear driveshafts
together and force the front and rear wheels to rotate at
the same speed. The 4WD LOW position is intended for
loose, slippery road surfaces only. Driving in the 4WD
LOW position on dry, hard-surfaced roads may cause
increased tire wear and damage to driveline components.
5
STARTING AND OPERATING 479

When operating your vehicle in 4WD LOW, the engine
speed is approximately three times that of the 4WD HI
position at a given road speed. Take care not to overspeed
the engine and do not exceed 25 mph (40 km/h).
Proper operation of four-wheel drive vehicles depends
on tires of equal size, type, and circumference on each
wheel. Any difference will adversely affect shifting and
cause damage to the transfer case.
Because four-wheel drive provides improved traction,
there is a tendency to exceed safe turning and stopping
speeds. Do not go faster than road conditions permit.
WARNING!
You or others could be injured or killed if you leave
the vehicle unattended with the transfer case in the
NEUTRAL position without first fully engaging the
(Continued)
WARNING!(Continued)
parking brake. The transfer case NEUTRAL position
disengages both the front and rear drive shafts from
the powertrain and will allow the vehicle to roll,
even if the transmission is in PARK. The parking
brake should always be applied when the driver is
not in the vehicle.
Shift Positions
For additional information on the appropriate use of each
4WD system mode position, see the information below:
4WD AUTO
This range is used on surfaces such as ice, snow, gravel,
sand, and dry hard pavement.
NOTE:Refer to “Selec-Terrain – If Equipped” in “Start-
ing And Operating” for further information on the vari-
ous positions and their intended usages.
480 STARTING AND OPERATING

NEUTRAL
This range disengages the driveline from the powertrain.
It is to be used for flat towing behind another vehicle.
Refer to “Recreational Towing” in “Starting And Operat-
ing” for further information.
WARNING!
You or others could be injured or killed if you leave
the vehicle unattended with the power transfer unit
in the NEUTRAL (N) position without first fully
engaging the parking brake. The NEUTRAL (N)
position disengages both the front and rear drive-
shafts from the powertrain and will allow the vehicle
to roll, even if the automatic transmission is in PARK
(or manual transmission is in gear). The parking
brake should always be applied when the driver is
not in the vehicle.
4WD LOW
This range is for low speed four-wheel drive. It provides
an additional gear reduction which allows for increased
torque to be delivered to both the front and rear wheels
while providing maximum pulling power for loose,
slippery road surfaces only. Do not exceed 25 mph
(40 km/h).
NOTE:Refer to “Selec-Terrain – If Equipped” for further
information on the various positions and their intended
usages.
Shifting Procedures
4WDHITo4WDLOW
With the vehicle at speeds of 0 to 3 mph (0 to 5 km/h),
the ignition switch in the ON position or the engine
running, shift the transmission into “N”, and push
the “4WD LOW” button once on the transfer case switch.
5
STARTING AND OPERATING 481

Quadra-Drive II System — If Equipped
The optional Quadra-Drive II System features two torque
transfer couplings. The couplings include an Electronic
Limited-Slip Differential (ELSD) rear axle and the
Quadra-Trac II transfer case. The optional ELSD axle is
fully automatic and requires no driver input to operate.
Under normal driving conditions, the unit functions as a
standard axle, balancing torque evenly between left and
right wheels. With a traction difference between left and
right wheels, the coupling will sense a speed difference.
As one wheel begins to spin faster than the other, torque
will automatically transfer from the wheel that has less
traction, to the wheel that has traction. While the transfer
case and axle coupling differ in design, their operation is
similar. Follow the Quadra-Trac II transfer case shifting
information, preceding this section, for shifting this sys-
tem.
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 Switch
486 STARTING AND OPERATING

Selec-Terrain consists of the following positions:
•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 with air suspen-
sion, the default ride height for Snow is NRH.
• 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 – Off road calibration for use on low traction
surfaces such as sand or wet grass. Driveline is maxi-
mized for traction. Some binding may be felt on less
forgiving surfaces. The electronic brake controls are set to limit traction control management of throttle and
wheel spin. If equipped with air suspension, the
default ride height for Sand is NRH.
• Mud – Off road calibration for use on low traction
surfaces such as mud. Driveline is maximized for
traction. Some binding may be felt on less forgiving
surfaces. The electronic brake controls are set to limit
traction control management 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. 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
5
STARTING AND OPERATING 487

NOTE:This mode is intended to be enabled with engine
running.
Transport Mode
To assist with flat bed towing, the air suspension system
has a feature which will put the vehicle into Entry/Exit
height and disable the automatic load leveling system.
Refer to “Uconnect Settings” in “Understanding Your
Instrument Panel” for further information.
NOTE: This mode is intended to be enabled with engine
running.
Wheel Alignment Mode
Before performing a wheel alignment this mode must be
enabled. Refer to “Uconnect Settings” in “Understanding
Your Instrument Panel” for further information.
NOTE: This mode is intended to be enabled with engine
running.If equipped with a touch screen radio all enabling/
disabling of air suspension features must be done through
the radio. Refer to “Uconnect Settings” in “Understanding
Your Instrument Panel” for further information.
Driver Information Display (DID) Messages
When the appropriate conditions exist, a message will
appear in the DID display. Refer to “Driver Information
Display (DID)” in “Understanding Your Instrument
Panel” for further information.
Operation
The indicator lamps 3 through 6 will illuminate to show
the current position of the vehicle. Flashing indicator
lamps will show a position which the system is working
to achieve. When raising, if multiple indicator lamps are
flashing on the “Up” button, the highest flashing indica-
tor lamp is the position the system is working to achieve.
492 STARTING AND OPERATING

and indicator lamp 3 will flash until Entry/Exit Mode
is achieved at which point indicator lamp 3 will go
solid. If during the height change to Entry/Exit Mode,
the vehicle speed exceeds 15 mph (24 km/h), the
height change will be paused until the vehicle speed
either goes below 15 mph (24 km/h) and the height
change continues to Entry/Exit Mode, or exceeds
25 mph (40 km/h) and the vehicle height will return to
NRH. Entry/Exit Mode may be selected while the
vehicle is not moving provided that the engine is still
running and all doors remain closed.
• Transport Mode - No indicator lamps will be illumi-
nated. Customer driving will disable Transport Mode.
•
Tire/Jack Mode - indicator lamps 3 and 6 will be illumi-
nated. Customer driving will disable Tire/Jack Mode.
• Wheel Alignment Mode - indicator lamps 3 and 4 will
be illuminated. Customer driving will disable Wheel
Alignment Mode.
ON-ROAD DRIVING TIPS
Utility vehicles have higher ground clearance and a
narrower track to make them capable of performing in a
wide variety of off-road applications. Specific design
characteristics give them a higher center of gravity than
ordinary vehicles.
An advantage of the higher ground clearance is a better
view of the road, allowing you to anticipate problems.
They are not designed for cornering at the same speeds as
conventional two-wheel drive vehicles any more than
low-slung sports cars are designed to perform satisfacto-
rily in off-road conditions. If at all possible, avoid sharp
turns or abrupt maneuvers. As with other vehicles of this
type, failure to operate this vehicle correctly may result in
loss of control or vehicle rollover.
494 STARTING AND OPERATING

Lower Front Fascia Removal:
1. Remove the seven quarter turn fasteners.
2. Starting on one side of the vehicle, disengage lowerfascia from the upper fascia. Grasp the portion inside
the wheel well. Pulling it downwards and toward you,
separate the tabs from the slots in the upper fascia.
3. Continue working your way across the vehicle, sepa- rating the remaining tabs from the slots in the upper
fascia.
NOTE: Do not allow the lower fascia to freely hang from
the tabs in the opposite corner as damage to lower and
upper fascia may result.
4. Store the lower fascia in a safe location.
NOTE: It is recommend to also remove the radar sensor
on vehicle equipped to Adaptive Cruise Control (ACC).
This radar sensor is specifically calibrated to your vehicle
and is not interchangeable with other radar sensors. Radar Sensor Removal Procedure (If Equipped With
Adaptive Cruise Control [ACC]):
1. With the lower fascia removed, which provides access
to the sensor and bracket, disconnect the wiring
harness from the sensor.
2. Using a suitable tool, disconnect the wire clip from the bracket.
3. Using a suitable tool, remove the two fasteners that hold the sensor bracket to the bumper beam.
NOTE: It is recommended to scribe location to assist in
reinstallation.
4. Locate the protective connector on the rear of the bumper beam.
496 STARTING AND OPERATING