2010 JEEP GRAND CHEROKEE suspension

OFF-ROAD DRIVING TIPS
NOTE:
Prior to off-road driving, remove the front air
dam to prevent damage. The front air dam is
attached to the lower front fascia with seven
quarter turn fasteners and can be removed
by hand.
Quadra-Lift™ – If EquippedWhen off-roading, it is recommended that the
lowest useable vehicle height that will clear thecurrent obstacle or terrain be selected. The
vehicle height should then be raised as re-
quired by the changes in terrain.
The Selec-Terrain™ switch will automatically
change the vehicle to the optimized height
based on the Selec-Terrain™ switch position.
The vehicle height can be changed from the
default height for each Selec-Terrain™ mode
by normal use of the air suspension switches.
Refer to “Quadra-Lift™ – If Equipped” in “Start-
ing and Operating” for further information.
When to Use 4WD LOW Range –
If Equipped
When off-road driving, shift to 4WD LOW for
additional traction. This range should be limited
to extreme situations such as deep snow, mud,
or sand where additional low speed pulling
power is needed. Vehicle speeds in excess of
25 mph (40 km/h) should be avoided when in
4WD LOW range.
Driving Through WaterAlthough your vehicle is capable of driving
through water, there are a number of precau-
tions that must be considered before entering
the water.
CAUTION!
When driving through water, do not exceed
5 mph (8 km/h). Always check water depth
before entering, as a precaution, and check all
fluids afterward. Driving through water may
cause damage that may not be covered by the
new vehicle limited warranty.
Driving through water more than a few inches/
centimeters deep will require extra caution to
ensure safety and prevent damage to your
vehicle. If you must drive through water, try to
determine the depth and the bottom condition
(and location of any obstacles) prior to enter-
ing. Proceed with caution and maintain a
steady controlled speed less than 5 mph
(8 km/h) in deep water to minimize wave ef-
fects.
Flowing Water
If the water is swift flowing and rising (as in
storm run-off), avoid crossing until the water
level recedes and/or the flow rate is reduced. If
you must cross flowing water avoid depths in
excess of 9 in (23 cm). The flowing water can
erode the streambed, causing your vehicle to
Front Air Dam
1 — Front Bumper
2 — Front Air Dam Fasteners
218

When descending mountains or hills, repeated
braking can cause brake fade with loss of
braking control. Avoid repeated heavy braking
by downshifting the transmission whenever
possible.
After Driving Off-RoadOff-road operation puts more stress on your
vehicle than does most on-road driving. After
going off-road, it is always a good idea to
check for damage. That way you can get any
problems taken care of right away and have
your vehicle ready when you need it.
•Completely inspect the underbody of your
vehicle. Check tires, body structure, steer-
ing, suspension, and exhaust system for
damage.
• Inspect the radiator for mud and debris and
clean as required.
• Check threaded fasteners for looseness,
particularly on the chassis, drivetrain com-
ponents, steering, and suspension. Re-
tighten them, if required, and torque to the
values specified in the Service Manual. •
Check for accumulations of plants or brush.
These things could be a fire hazard. They
might hide damage to fuel lines, brake hoses,
axle pinion seals, and propeller shafts.
• After extended operation in mud, sand, wa-
ter, or similar dirty conditions, have the ra-
diator, fan, brake rotors, wheels, brake lin-
ings, and axle yokes inspected and cleaned
as soon as possible.
WARNING!
Abrasive material in any part of the brakes
may cause excessive wear or unpredictable
braking. You might not have full braking power
when you need it to prevent a collision. If you
have been operating your vehicle in dirty
conditions, get your brakes checked and
cleaned as necessary.
• If you experience unusual vibration after
driving in mud, slush or similar conditions,
check the wheels for impacted material. Im-
pacted material can cause a wheel imbal-
ance and freeing the wheels of it will correct
the situation.
POWER STEERING
3.6L Engine and 3.0L Diesel Engine
Your vehicle is equipped with an electro-
hydraulic power steering system that will give
you good vehicle response and increased ease
of maneuverability in tight spaces. The system
will vary its assist to provide light efforts while
parking and good feel while driving. If the
electro-hydraulic power steering system expe-
riences a fault that prevents it from providing
power steering assist, then the system will
provide mechanical steering capability.
CAUTION!
Extreme steering maneuvers may cause the
electrically driven pump to reduce or stop
power steering assistance in order to prevent
damage to the system. Normal operation will
resume once the system is allowed to cool.
If the “SERVICE POWER STEER-
ING SYSTEM” message and a
flashing icon are displayed on the
EVIC screen, it indicates that the
vehicle needs to be taken to the
220

WARNING!
Using tires of different size and type (M+S,
Snow) between front and rear axles can
cause unpredictable handling. You could lose
control and have a collision.
CAUTION!
To avoid damage to your vehicle or tires,
observe the following precautions:
•Because of restricted traction device clear-
ance between tires and other suspension
components, it is important that only trac-
tion devices in good condition are used.
Broken devices can cause serious dam-
age. 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 retighten after driving about 0.5 mile
(0.8 km).
• Do not exceed 30 mph (48 km/h).
(Continued)
CAUTION!(Continued)
• Drive cautiously and avoid severe turns
and large bumps, especially with a loaded
vehicle.
• Do not drive for prolonged period on dry
pavement.
• Observe the traction device manufacturer’s
instructions on the method of installation,
operating speed, and conditions for use.
Always use the suggested operating speed
of the device manufacturer’s if it is less than
30 mph (48 km/h).
• Do not use traction devices on a compact
spare tire.
Treadwear IndicatorsThese indicators are narrow strips 1/16 in
(1.6 mm) thick and are found in the tread
pattern grooves.
When the tread pattern is worn down to these
treadwear indicators, the tires should be re-
placed. Overloading your vehicle, long trips in very hot
weather, and driving on bad roads may result in
greater wear.Life of TireThe service life of a tire is dependent upon
varying factors including but not limited to:
•
Driving style
• Tire pressure
• Distance driven
1 — Worn Tire
2 — New Tire
232

WARNING!
Tires and the spare tire should be replaced
after six years, regardless of the remaining
tread. Failure to follow this warning can result
in sudden tire failure. You could lose control
and have an accident resulting in serious
injury or death.
Keep unmounted tires in a cool, dry place with
as little exposure to light as possible. Protect
tires from contact with oil, grease and gasoline.
Replacement TiresThe tires on your new vehicle provide a balance
of many characteristics. They should be in-
spected regularly for wear and correct inflation
pressure. The manufacturer strongly recom-
mends that you use tires equivalent to the
originals in quality and performance when re-
placement is needed (see section on tread
wear indicators). Failure to use equivalent re-
placement tires may adversely affect the safety,
handling and ride of your vehicle. We recom-
mend that you contact your local authorized
dealer on any questions you may have on tire
specifications or capability.
WARNING!
• Do not use a tire, wheel size or rating other
than that specified for your vehicle. Some
combinations of unapproved tires and
wheels may change suspension dimen-
sions and performance characteristics, re-
sulting in changes to steering, handling,
and stress to steering and suspension
components. You could lose control and
have an accident resulting in serious injury
or death. Use only the tire and wheel sizes
with load ratings approved for your vehicle.
• Never use a tire smaller than the minimum
tire size listed on your vehicle’s tire placard
unless explicitly instructed to do so by the
vehicle manufacturer (reference tire chain
information in this manual). Using an
under-sized tire could result in tire over-
loading and failure.
•
Failure to equip your vehicle with tires having
adequate speed capability can result in sud-
den tire failure and loss of vehicle control.
(Continued)
WARNING! (Continued)
• Overloading your tires is dangerous. Like
under-inflation, overloading can cause tire
failure. Use tires of the recommended load
capacity for your vehicle — never overload
them.
CAUTION!
Replacing original tires with tires of a different
size may result in false speedometer and
odometer readings. This can also affect ve-
hicle performance and can do potential dam-
age to the driveline. Check with your dealer
before replacing tires with a different size.
Directional Tread Pattern Tires –
If Equipped
Your vehicle may be equipped with tires using
a directional tread pattern. These tires are
designed to optimize dry handling as well as
wet performance. To obtain the full benefits of
this design, the tires must be installed so that
they rotate in the correct direction. The rotation
direction of this type of tire is indicated by
233

TOWING A DISABLED VEHICLEThis section describes procedures for towing a disabled vehicle using a commercial wrecker service. If the transmission and drivetrain are operable,
disabled vehicles may also be towed as described under “Recreational Towing” in the “Starting and Operating” section.
Towing Condition Wheels OFF the Ground 4WD Models
Flat Tow NONE See instructions in “Recreational Towing” under “Starting and Operating”
•
Trans in PARK
• T/case in NEUTRAL
• To w i n forward direction
Wheel Lift or Dolly Tow Front
NOT ALLOWED
Rear NOT ALLOWED
Flatbed ALL BEST METHOD
Proper towing or lifting equipment is required to
prevent damage to your vehicle. Use only tow
bars and other equipment designed for the
purpose, following equipment manufacturer’s
instructions. Use of safety chains is mandatory.
Attach a tow bar or other towing device to main
structural members of the vehicle, not to
bumpers or associated brackets. State and
local laws applying to vehicles under tow must
be observed. If you must use the accessories (wipers, de-
frosters, etc.) while being towed, the ignition
must be in the ON/RUN position, not the ACC
position.
If the vehicle’s battery is discharged, see
Brake/Transmission Interlock Manual Override
(under Starting and Operating, Automatic
Transmission) for instructions on shifting the
automatic transmission out of the PARK posi-
tion for towing.
CAUTION!
•
Do not attempt to use sling type equipment
when towing. When securing the vehicle to
a flat bed truck, do not attach to front or rear
suspension components. Damage to your
vehicle may result from improper towing.
• If the vehicle being towed requires steering,
the ignition must be in the ON/RUN or ACC
position, not in the LOCK position.
265

FUSES
Totally Integrated Power Module
The totally integrated power module (TIPM) is
located in the engine compartment. This center
contains cartridge fuses and mini fuses. A
description of each fuse and component may
be stamped on the inside cover, otherwise the
cavity number of each fuse is stamped on the
inside cover that corresponds to the following
chart.
Cav-ity Car-
tridge Fuse Mini
Fuse Description
J01 40 Amp Green Air Suspension
J02 30 Amp Pink Power Liftgate
Module
J03 30 Amp Pink Trailer Tow
J04 25 Amp Natural Driver Door Node
J05 25 Amp Natural Passenger Door
Node
J06 40 Amp Green Antilock Brakes
Pump/Stability
Control System
J07 30 Amp Pink Antilock Brakes
Valve/Stability
Control System
J08 40 Amp Green Power Seat
J09 30 Amp Pink E-Brake
J10 30 Amp Pink Headlamp Wash
Relay ContactCav-
ity Car-
tridge Fuse Mini
Fuse Description
J11 30 Amp Pink Drive Train Control
Module
J12 30 Amp Pink Rear Defroster
J13 60 Amp Yellow Main Ignition Off
Draw (IOD)
J14 20 Amp Blue Trailer Tow Lamps/
Park Lamps
J15 40 Amp Green Front Cabin Fan/
Blower
J17 40 Amp Green Starter Motor So-
lenoid
J18 20 Amp Blue Powertrain Control
Module/Powertrain
Control Module
Transmission
Range
J19 60 Amp Yellow Radiator Fan Mo-
tor HI/Radiator
Fan Motor Low
J20 30 Amp Pink Front Wiper
Totally Integrated Power Module (TIPM)
290

Cav-ity Car-
tridge Fuse Mini
Fuse Description
J21 20 Amp Blue Front/Rear
Washer Control
J22 25 Amp Natural Sunroof Module
M1 15 Amp BlueStop Lamps
M2 20 Amp YellowElectronic Limit
Slip Differential/Air
Suspension
M3 20 Amp YellowLiftgate/Headrest
M5 25 Amp Natural115V AC Power
Inverter
M6 20 Amp YellowCigar Lighter
M7 20 Amp YellowPower Outlet #2
(Switchable)
M8 20 Amp YellowFront Heated Seat
& Steering Wheel
M9 20 Amp YellowRear Heated
SeatsCav-
ity Car-
tridge Fuse Mini
Fuse Description
M10 15 Amp BlueVideo/Universal
Garage Door
Opener
M11 10 Amp RedHeating, Ventila-
tion & Air Condi-
tioning (Climate
Control System)
M12 30 Amp GreenRadio/Amplifier
M13 20 Amp YellowInstrument Cluster
M14 20 Amp YellowBack Up CameraCav-
ity Car-
tridge Fuse Mini
Fuse Description
M15 20 Amp YellowPower Seat
Module(s)/
Adaptive Cruise
Control/Audio
Telematics/
Daytime Running
Lights Relay/Air
Suspension
Module/Instrument
Cluster
M16 10 Amp RedOccupant Re-
straint Controller
M19 25 Amp NaturalAutomatic Shut-
down 1 and 2
M20 15 Amp BlueInstrument Cluster
M21 20 Amp YellowAutomatic Shut-
down 3
M22 10 Amp RedHorns (Low/High)
– Right
M23 10 Amp RedHorns (Low/High)
– Left
291

22,500 Miles (36,000 km) or
18 Months Maintenance Service
Schedule
❏Change the engine oil and engine oil
filter.††
❏ Rotate tires.
❏ Inspect the CV joints.
❏ Inspect exhaust system.
❏ Inspect the front suspension, tie rod ends
and boot seals; replace if necessary.
Odometer Reading Date
Repair Order # Dealer Code
Signature Authorized Chrysler Dealer
30,000 Miles (48,000 km) or 24 Months Maintenance Service
Schedule
❏ Change the engine oil and engine oil filter.††
❏ Rotate tires.
❏ Replace the engine air cleaner filter.
❏ Replace the air conditioning filter.
❏ Replace the spark plugs (5.7L Engine).
❏ Adjust parking brake on vehicles equipped with four-wheel disc brakes.
❏ Inspect the brake linings, replace if necessary.
❏ Inspect the front and rear axle fluid, change if using your vehicle for police, taxi, fleet,
off-road or frequent trailer towing.
❏ Inspect the transfer case fluid.
Odometer Reading Date
Repair Order # Dealer Code
Signature Authorized Chrysler Dealer
304