ESP JEEP LIBERTY 2008 KK / 2.G Service Manual

accelerator and apply as little throttle as possible. Be sure
to adapt your speed and driving to the prevailing road
conditions.
WARNING!
ESP (Electronic Stability Program) cannot prevent the
natural laws of physics from acting on the vehicle,
nor can it increase the traction afforded by prevailing
road conditions. ESP cannot prevent accidents, in-
cluding those resulting from excessive speed in
turns, driving on very slippery surfaces, or hydro-
planing. Only a safe, attentive, and skillful driver can
prevent accidents. The capabilities of an ESP-
equipped vehicle must never be exploited in a reck-
less or dangerous manner, which could jeopardize
the user's safety or the safety of others.Depending upon model and mode of operation, the ESP
system has up to three operating modes: ªESP Onº
ªPartial Off,º and ªFull Off.º
ESP On Ð 2WD Vehicles & 4WD Vehicles in 2WD &
4WD High Range
This is the normal operating mode for ESP when operat-
ing a 2WD vehicle. It is also the normal mode for
operating a 4WD vehicle in 2WD or 4WD high range. The
ESP system will be in ªESP Onº mode whenever the
vehicle is started or the transfer case (if equipped) is
shifted out of 4WD low range. This mode should be used
for most driving situations. ESP should only be turned to
ªPartial Offº or ªFull Offº for specific reasons as noted.
Refer to ªPartial Offº and to ªFull Offº for additional
information.
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Partial Off Ð 2WD Vehicles & 4WD Vehicles in 2WD
& 4WD High Range
The ªPartial Offº mode is intended for driving in deep
snow, sand, or gravel. This mode raises the threshold for
TCS and ESP activation, which allows for more wheel
spin than what ESP normally allows.
The ªESP OFFº button is located in the lower switch bank
below the climate Control. To enter the ªPartial Offº
mode, momentarily depress the ªESP OFFº button and
the9ESP/TCS Indicatorº light will illuminate. To turn the
ESP on again, momentarily depress the9ESP OFF9button
and the9ESP/TCS Indicatorº light will turn off. This will
restore the normal ªESP Onº mode of operation.
NOTE:To improve the vehicle's traction when driving
with snow chains, or when starting off in deep snow,
sand, or gravel, it may be desirable to switch to the
ªPartial Offº mode by momentarily depressing the ªESP
OFFº button. Once the situation requiring ªPartial Offº
ESP Off Button
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mode is overcome, turn ESP back on by momentarily
depressing the ªESP OFFº button. This may be done
while the vehicle is in motion.
Full Off Ð 4WD Vehicles in 4WD High & 4WD Low
Range
The ªFull Offº mode is intended for off-highway and
off-road use when ESP stability features could inhibit
vehicle maneuverability due to trail conditions.
The ªESP OFFº button is located in the lower switch bank
below the climate Control. To enter ªFull Offº mode,
depress and hold the ªESP Offº button for 5 seconds
while the vehicle is stopped with the engine running.
After 5 seconds, the ªESP/TCS Indicatorº light will
illuminate and an ªESP Offº message will appear in the
odometer. Press and release the trip odometer button
located on the instrument cluster to turn off this message.
In this mode, ESP and TCS are turned off (except for the
ªlimited slipº feature described in the TCS section) untilthe vehicle reaches a speed of 40 mph. At speeds over 40
mph, the system automatically switches to ªPartial Offº
mode, described above. When the vehicle speed returns
to less than 35 mph, the ESP system will return to ªFull
Offº mode. The ªESP/TCS Indicatorº light is always
illuminated when ESP is off. To turn ESP on again,
momentarily depress the ªESP Offº button. This will
restore the normal ªESP Onº mode of operation.
NOTE:
²ªFull Offº is the only operating mode for ESP in 4WD
low range. Therefore, ESP system will be in this mode
whenever the vehicle is started in 4WD low range or
the transfer case is shifted into 4WD low range.
²The ªESP OFFº message will display and a chime will
sound when the gear selector is moved from any
position to the ªPº (Park) position and then moved out
of the ªPº (Park) position. This will occur even if the
message was cleared previously.
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WARNING!
With the ESP switched off, the enhanced vehicle
stability offered by ESP is unavailable. In an emer-
gency evasive maneuver, the ESP system will not
engage to assist in maintaining stability. ªFull Offº
mode is only intended for off-highway or off-road
use.
ESP/BAS Warning Light & ESP/TCS Indicator
Light
The malfunction indicator for the ESP is com-
bined with the BAS indicator. The ªESP/BAS
Malfunction Indicatorº light and the ªESP/
TCS Indicatorº light in the instrument cluster
both turn on when the ignition switch is turned to the
ON position. They should both turn off with the engine
running. If the ªESP/BAS Malfunction Indicatorº lightturns on continuously with the engine running, a mal-
function has been detected in either the ESP or the BAS
system, or both. If this light remains on after several
ignition cycles, and the vehicle has been driven several
miles at speeds greater than 30 mph (48 km/h), see your
authorized dealer as soon as possible to have the problem
diagnosed and corrected.
NOTE:
²9The9ESP/TCS Indicatorº light and the9ESP/BAS
Malfunction Indicatorº light will turn on momentarily
each time the ignition switch is turned ON.
²Each time the ignition is turned ON, the ESP System
will be ON even if it was turned off previously.
²The ESP Control System will make buzzing or clicking
sounds when it is active. This is normal; the sounds
will stop when ESP becomes inactive following the
maneuver that caused the ESP activation.
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EXAMPLE:
Service Description:
95= Load Index
ÐA numerical code associated with the maximum load a tire can carry.
H= Speed Symbol
ÐA symbol indicating the range of speeds at which a tire can carry a load corresponding
to its load index under certain operating conditions.
ÐThe maximum speed corresponding to the Speed Symbol should only be achieved un-
der specified operating conditions (i.e. tire pressure, vehicle loading, road conditions, and
posted speed limits).
Load Identification:
(....blank....(= Absence of any text on sidewall of the tire indicates a Standard Load (SL) Tire
Extra Load (XL)= Extra Load (or Reinforced) Tire
Light Load= Light Load Tire
C,D,E= Load range associated with the maximum load a tire can carry at a specified pressure
Maximum LoadÐ Maximum Load indicates the maximum load this tire is designed to carry.
Maximum PressureÐ
Maximum Pressure indicates the maximum permissible cold tire inflation pressure for this tire.
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2. EconomyÐ
Improper inflation pressures can cause uneven wear
patterns to develop across the tire tread. These abnormal
wear patterns will reduce tread life resulting in a need for
earlier tire replacement. Under inflation also increases
tire rolling resistance and results in higher fuel consump-
tion.
3. Ride Comfort and Vehicle StabilityÐ
Proper tire inflation contributes to a comfortable ride.
Over inflation produces a jarring and uncomfortable ride.
Both under inflation and over inflation affect the stability
of the vehicle and can produce a feeling of sluggish
response or over responsiveness in the steering.
Unequal tire pressures can cause erratic and unpredict-
able steering response.
Unequal tire pressure from side to side may cause the
vehicle to drift left or right.Tire Inflation Pressures
The proper cold tire inflation pressure is listed on either
the face of the driver's door or the driver's side ªBº pillar.
The pressure should be checked and adjusted as well as
inspecting for signs of tire wear or visible damage at least
once a month. Use a good quality pocket-type gauge to
Tire Placard Location
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check tire pressure. Do not make a visual judgement
when determining proper inflation. Radial tires may look
properly inflated even when they are under inflated.
CAUTION!
After inspecting or adjusting the tire pressure, al-
ways reinstall the valve stem cap (if equipped). This
will prevent moisture and dirt from entering the
valve stem, which could damage the valve stem.
Inflation pressures specified on the placard are always
ªcold tire inflation pressure.º Cold tire inflation pressure
is defined as the tire pressure after the vehicle has not
been driven for at least 3 hours, or driven less than 1 mile
(1 km) after a 3 hour period. The cold tire inflation
pressure must not exceed the maximum inflation pres-
sure molded into the tire sidewall.Check tire pressures more often if subject to a wide range
of outdoor temperatures, as tire pressures vary with
temperature changes.
Tire pressures change by approximately 1 psi (7 kPa) per
12É F (7É C) of air temperature change. Keep this in mind
when checking tire pressure inside a garage, especially in
the winter.
Example: If garage temperature = 68É F (20É C) and the
outside temperature = 32É F (0É C) then the cold tire
inflation pressure should be increased by 3 psi (21 kPa),
which equals 1 psi (7 kPa) for every 12É F (7É C) for this
outside temperature condition.
Tire pressure may increase from 2 to 6 psi (13 to 40 kPa)
during operation. DO NOT reduce this normal pressure
build up or your tire pressure will be too low.
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Improper alignment will not cause vehicle vibration.
Vibration may be a result of tire and wheel out-of-
balance. Proper balancing will reduce vibration and
avoid tire cupping and spotty wear.
TIRE CHAINS
Use only compact chains, or other traction aids that meet
SAE type ªClass Sº specifications. Chains must be the
proper size for the vehicle, as recommended by the chain
manufacturer. In addition, only install tire chains on
P235/65R17 or smaller tires.
CAUTION!
To avoid damage to your vehicle, tires, or chains, observe the following
precautions:
²Do not use tire chains on vehicles equipped with tires other than
P235/65R17 tires. There may not be adequate clearance for the chains and
you are risking structural or body damage to your vehicle.
²Because of limited chain clearance between tires and other suspension
components, it is important that only chains in good condition are used.
Broken chains can cause serious vehicle damage. Stop the vehicle
immediately if noise occurs that could suggest chain breakage. Remove
the damaged parts of the chain before further use.
²Install chains on the rear wheels as tightly as possible and then retighten
after driving about
1¤2mile (0.8 km).
²Do not exceed 45 mph (72 km/h).
²Drive cautiously and avoid severe turns and large bumps, especially with
a loaded vehicle.
²Use on Rear Wheels only.
²Do not drive for a prolonged period on dry pavement.
²Observe the tire chain manufacturer's instructions on method of instal-
lation, operating speed, and conditions for use. Always use the lower
suggested operating speed of the chain manufacturer if different from
the speed recommended by the manufacturer.
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These cautions apply to all chain traction devices, includ-
ing link and cable (radial) chains.
TIRE ROTATION RECOMMENDATIONS
Tires on the front and rear axles of vehicles operate at
different loads and perform different steering, handling,
and braking functions. For these reasons, they wear at
unequal rates, and develop irregular wear patterns.
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
type tires. Rotation will increase tread life, help to main-
tain mud, snow, and wet traction levels, and contribute to
a smooth, quiet ride.Follow the ªMaintenance Scheduleº in Section 8 of this
manual for the recommended tire rotation frequency.
Remember, more frequent rotation is permissible if de-
sired. Also, correct for anything causing rapid or unusual
wear prior to performing the tire rotation.
The suggested rotation method is the ªforward-crossº
shown in the following diagram.
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NOTE:
²The TPMS is not intended to replace normal tire care
and maintenance, or to provide warning of a tire
failure or condition.
²The TPMS should not be used as a tire pressure gauge
while adjusting your tire pressure.
²Driving on a significantly under-inflated tire causes
the tire to overheat and can lead to tire failure.
Under-inflation also reduces fuel efficiency and tire
tread life, and may affect the vehicle's handling and
stopping ability.
²The TPMS is not a substitute for proper tire mainte-
nance, and it is the driver 's responsibility to maintain
correct tire pressure using an accurate tire pressure
gauge, even if under-inflation has not reached the
level to trigger illumination of the Tire Pressure Moni-
toring Telltale light.
²Seasonal temperature changes will affect tire pressure,
and the TPMS will monitor the actual tire pressure in
the tire.
Base System Ð If Equipped
The Tire Pressure Monitor System (TPMS) uses wireless
technology with wheel rim mounted electronic sensors to
monitor tire pressure levels. Sensors, mounted to each
wheel as part of the valve stem, transmit tire pressure
readings to the Receiver Module.
NOTE:It is particularly important for you to check the
tire pressure in all of the tires on your vehicle monthly
and to maintain the proper pressure.
The TPMS consists of the following components:
²Receiver Module
²4 Tire Pressure Monitoring Sensors
²Tire Pressure Monitoring Telltale Light
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