sensor JEEP GRAND CHEROKEE 2012 Owner handbook (in English)

Electronic Vehicle Information
Center (EVIC) Displays
When the appropriate conditions exist, the
EVIC displays the following messages:
•Vehicle Not In Park
• Key Left Vehicle
• Key Not Detected
• Service Keyless System
• Service Tire Pressure System
• Service Park Assist System
• Park Assist System Blinded
• Park Assist Disabled
• Front Sensor Blinded
• Rear Sensor Blinded
• Keyfob Battery Low
• Liftglass Open
• Left Front Turn Signal Lamp Out
• Right Front Turn Signal Lamp Out
• Left Rear Turn Signal Lamp Out •
Right Rear Turn Signal Lamp Out
• Check Tire Pressure
• ESC System Off
• Service Blind Spot System
• Blind Spot Detection Unavailable
• Blind Spot System Off
• Blind Spot System Unavailable Sensor
Blocked
• Blind Spot System Unavailable Astronomy
Zone — When the Blind Spot Module senses
a tower on the same frequency that it is
interfering with, it will automatically turn the
Blind Spot System off.
• Normal Cruise Ready — When Adaptive
Cruise Control (ACC) system is turned off
and Normal (Fixed Speed) Cruise Control
mode is available. Refer to “Adaptive Cruise
Control (ACC)” in “Understanding The Fea-
tures Of Your Vehicle” (if equipped).
• Adaptive Cruise Off — When the Adaptive
Cruise Control (ACC) system is turned off. Refer to “Adaptive Cruise Control (ACC)” in
“Understanding The Features Of Your Ve-
hicle” (if equipped).
• ACC Ready — When the ACC system is
activated. Refer to “Adaptive Cruise Control
(ACC)” in “Understanding The Features Of
Your Vehicle” (if equipped).
• ACC Set — After setting the desired speed
in the ACC system. Refer to “Adaptive Cruise
Control (ACC)” in “Understanding The Fea-
tures Of Your Vehicle” (if equipped).
• ACC Cancelled — To disable the ACC sys-
tem. Refer to “Adaptive Cruise Control
(ACC)” in “Understanding The Features Of
Your Vehicle” (if equipped).
• Sensed Vehicle Indicator — The system de-
tects a slower moving vehicle in the same
lane. Refer to “Adaptive Cruise Control
(ACC)” in “Understanding The Features Of
Your Vehicle” (if equipped).
• Driver Override — If you apply the accelera-
tor after setting the desired speed in the
ACC system. Refer to “Adaptive Cruise Con-
166

trol (ACC)” in “Understanding The Features
Of Your Vehicle” (if equipped).
• Distance Set — After changing the desired
following distance in the ACC system, this
message will display momentarily. Refer to
“Adaptive Cruise Control (ACC)” in “Under-
standing The Features Of Your Vehicle” (if
equipped).
• Brake — If the ACC system predicts that its
maximum braking level is not sufficient to
maintain the set distance, this message will
flash and a chime will sound while ACC
continues to apply its maximum braking ca-
pacity. When this occurs, you should imme-
diately apply the brakes as needed to main-
tain a safe distance from the vehicle ahead.
Refer to “Adaptive Cruise Control (ACC)” in
“Understanding The Features Of Your Ve-
hicle” (if equipped).
• Clean Radar Sensor in the Front of Vehicle —
If the ACC system deactivates due to perfor-
mance limiting conditions. Refer to “Adap-
tive Cruise Control (ACC)” in “Understanding
The Features Of Your Vehicle” (if equipped). •
ACC/FCW Unavailable Vehicle System Error
— If the ACC system turns off due to a
temporary malfunction that limits functional-
ity. Refer to “Adaptive Cruise Control (ACC)”
in “Understanding The Features Of Your Ve-
hicle” (if equipped).
• ACC/FCW Unavailable Service Radar Sen-
sor — If the ACC system turns off due to an
internal system fault that requires service
from an authorized dealer. Refer to “Adaptive
Cruise Control (ACC)” in “Understanding
The Features Of Your Vehicle” (if equipped).
• 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
• Memory 1 Profile Set
• Memory 2 Profile Set
• Memory System Unavailable — Not in Park
• Memory System Unavailable — Seatbelt
buckled
• Memory 1 Profile Recall
• Memory 2 Profile Recall
• Press Brake Pedal And Push Button To Start
• Wrong Key
• Damaged Key
• Key Not Programmed
• Function Currently Unavailable — Power Lift-
gate
• Unlock To Operate — Power Liftgate
• Put In Park To Operate — Power Liftgate
• Automatic High Beams On
• Automatic High Beams Off
• Service Four Wheel Drive System
167

Automatic Compass Calibration
This compass is self-calibrating, which elimi-
nates the need to manually reset the compass.
When the vehicle is new, the compass may
appear erratic and the EVIC will display CAL
until the compass is calibrated. You may also
calibrate the compass by completing one or
more 360–degree turns (in an area free from
large metal or metallic objects) until the CAL
indicator displayed in the EVIC turns off. The
compass will now function normally.NOTE:
A good calibration requires a level surface
and an environment free from large metallic
objects such as buildings, bridges, under-
ground cables, railroad tracks, etc.
Compass Variance
Compass Variance is the difference between
Magnetic North and Geographic North. To
compensate for the differences the variance
should be set for the zone where the vehicle is
driven, per the zone map. Once properly set,
the compass will automatically compensate forthe differences, and provide the most accurate
compass heading. For the most accurate com-
pass performance, the compass must be set
using the following steps.
NOTE:
Keep magnetic materials away from the top
of the instrument panel, such as iPod’s,
Mobile Phones, Laptops and Radar Detec-
tors. This is where the compass module is
located, and it can cause interference with
the compass sensor, and it may give false
readings.
177

next to the feature showing the system has
been activated or the check-mark is removed
showing the system has been deactivated.
Forward Collision Warning — If Equipped
The Forward Collision Warning (FCW) feature
can be can be set to Far, set to Near or turned
Off. The default status of FCW is the Far setting.
This means the system will warn you of a
possible collision with the vehicle in front of you
when you are farther away. This gives you the
most reaction time. To change the setting for
more dynamic driving select the Near setting.
This warns you of a possible collision with the
vehicle in front of you when you are much
closer. This allows for a more dynamic driving
experience. To change FCW status press and
release the SELECT button until a check-mark
appears next to the feature showing the system
has been activated or the check-mark is re-
moved showing the system has been deacti-
vated.
For further information, refer to ”Adaptive
Cruise Control (ACC)” in “Understanding The
Features Of Your Vehicle.”Park Assist System
The Rear Park Assist system will scan for
objects behind the vehicle when the transmis-
sion is in the REVERSE position and the vehicle
speed is less than 11 mph (18 km/h). The
system can be enabled with Sound Only,
Sound and Display, or turned OFF through the
EVIC. To make your selection, scroll up or down
until the preferred setting is highlighted, then
press and release the SELECT button until a
check-mark appears next to the setting, show-
ing that the setting has been selected. Refer to
“Rear Park Assist System” in “Understanding
The Features Of Your Vehicle” for system func-
tion and operating information.
Blind Spot Alert — If Equipped
There are three selections when operating
Blind Spot Alert. By pressing and releasing the
SELECT button once, the Blind Spot Alert fea-
ture can be activated in “Blind Spot: Lights
Only” mode. When this mode is selected the
Blind Spot Monitor (BSM) system is activated
and will only show a visual alert in the outside
mirrors. By pressing and releasing the SELECT
button a second time “Blind Spot: Lights/CHM”
mode is activated. In this mode the Blind SpotMonitor (BSM) will show a visual alert in the
outside mirrors as well as an audible alert when
the turn signal is on. When “Blind Spot: Off” is
selected the Blind Spot Monitor (BSM) system
is deactivated.
NOTE:
If your vehicle has experienced any damage
in the area where the sensor is located, even
if the fascia is not damaged, the sensor may
have become misaligned. Take your vehicle
to an authorized dealer to verify sensor
alignment. Having a sensor that is mis-
aligned will result in the BSM not operating
to specification.
Auto Unlock Doors
When this feature is selected, all doors will
unlock when the vehicle is stopped and the
transmission is in the PARK or NEUTRAL posi-
tion and the driver’s door is opened. To make
your selection, press and release the SELECT
button until a check-mark appears next to the
feature showing the system has been acti-
vated, or the check-mark is removed showing
the system has been deactivated.
180

ERM can only reduce the chance of wheel lift
occurring during severe or evasive driving ma-
neuvers. It cannot prevent wheel lift due to
other factors such as road conditions, leaving
the roadway or striking objects or other ve-
hicles.
WARNING!
Many factors, such as vehicle loading, road
conditions and driving conditions, influence
the chance that wheel lift or rollover may
occur. ERM cannot prevent all wheel lift or
rollovers, especially those that involve leaving
the roadway or striking objects or other ve-
hicles. The capabilities of an ERM-equipped
vehicle must never be exploited in a reckless
or dangerous manner which could jeopardize
the user’s safety or the safety of others.
Electronic Stability Control (ESC)
This system enhances directional control and
stability of the vehicle under various driving
conditions. ESC corrects for oversteering or
understeering of the vehicle by applying the
brake of the appropriate wheel to assist incounteracting the oversteer or understeer con-
dition. Engine power may also be reduced to
help the vehicle maintain the desired path.
ESC uses sensors in the vehicle to determine
the vehicle path intended by the driver and
compares it to the actual path of the vehicle.
When the actual path does not match the
intended path, ESC applies the brake of the
appropriate wheel to assist in counteracting the
oversteer or understeer condition.
•
Oversteer - when the vehicle is turning more
than appropriate for the steering wheel po-
sition.
• Understeer - when the vehicle is turning less
than appropriate for the steering wheel po-
sition.
The “ESC Activation/Malfunction Indicator
Light” located in the instrument cluster will start
to flash as soon as the tires lose traction and
the ESC system becomes active. The “ESC
Activation/Malfunction Indicator Light” also
flashes when the TCS is active. If the “ESC
Activation/Malfunction Indicator Light” begins
to flash during acceleration, ease up on the
accelerator and apply as little throttle as pos- sible. Be sure to adapt your speed and driving
to the prevailing road conditions.
WARNING!
The Electronic Stability Control (ESC) cannot
prevent the natural laws of physics from act-
ing on the vehicle, nor can it increase the
traction afforded by prevailing road condi-
tions. ESC cannot prevent accidents, includ-
ing those resulting from excessive speed in
turns, driving on very slippery surfaces, or
hydroplaning. The capabilities of an ESC
equipped vehicle must never be exploited in a
reckless or dangerous manner which could
jeopardize the user’s safety or the safety of
others.
The ESC system has two available operating
modes in 4WD HIGH range, and one operating
mode in 4WD LOW range.
High Range (Four-Wheel Drive Models)
On
This is the normal operating mode for ESC in
4WD HIGH range. Whenever the vehicle is 247

started or the transfer case (if equipped) is
shifted from 4WD LOW range or NEUTRAL
back to 4WD HIGH range, the ESC system will
be in this “On” mode. This mode should be
used for most driving situations. ESC should
only be turned to “Partial Off” mode for specific
reasons as noted below.
Partial Off
This mode is entered by momentarily pressing
the “ESC OFF” switch. When in “Partial Off”
mode, the TCS portion of ESC, except for the
BLD feature described in the TCS section, has
been disabled and the “ESC Off Indicator
Light” will be illuminated. All other stability
features of ESC function normally. This mode is
intended to be used if the vehicle is in deep
snow, sand, or gravel conditions and more
wheel spin than ESC would normally allow is
required to gain traction. To turn ESC on again,
momentarily press the “ESC OFF” switch. This
will restore the normal “ESC On” mode of
operation.
When in “Partial Off” mode, the TCS function-
ality of ESC, (except for the limited slip feature
described in the TCS section), has been dis-
abled and the “ESC Off Indicator Light” will beilluminated. All other stability features of ESC
function normally. When in “Partial Off” mode,
the engine power reduction feature of TCS is
disabled, and the enhanced vehicle stability
offered by the ESC system is reduced.
NOTE:
To improve the vehicle’s traction when driv-
ing with snow chains, or starting off in deep
snow, sand, or gravel, it may be desirable to
switch to the “Partial Off” mode by pressing
the “ESC OFF” switch. Once the situation
requiring ESC to be switched to the “Partial
Off” mode is overcome, turn ESC back on by
momentarily pressing the “ESC OFF”
switch. This may be done while the vehicle
is in motion.
4WD Low Range
Partial Off
This is the normal operating mode for ESC in
4WD LOW range. Whenever the vehicle is
started in 4WD LOW range, or the transfer case
(if equipped) is shifted from 4WD HIGH range
or NEUTRAL to 4WD LOW range, the ESC
system will be in the “Partial Off” mode.
Trailer Sway Control (TSC)TSC uses sensors in the vehicle to recognize
an excessively swaying trailer and will take the
appropriate actions to attempt to stop the sway.
The system may reduce engine power and
apply the brake of the appropriate wheel(s) to
counteract the sway of the trailer. TSC will
become active automatically once an exces-
sively swaying trailer is recognized. No driver
action is required. Note that TSC cannot stop all
trailers from swaying. Always use caution when
towing a trailer and follow the trailer tongue
weight recommendations. Refer to “Trailer Tow-
ing” in “Starting and Operating” for further
ESC OFF Switch
248

TIRE PRESSURE MONITOR SYSTEM
(TPMS)
The Tire Pressure Monitoring System (TPMS)
will warn the driver of a low tire pressure based
on the vehicle recommended cold tire pressure.
The tire pressure will vary with temperature by
about 1 psi (7 kPa) for every 12°F (6.5°C). This
means that when the outside temperature de-
creases, the tire pressure will decrease. Tire
pressure should always be set based on cold
inflation tire pressure. This is defined as the tire
pressure after the vehicle has not been driven
for at least three hours, or driven less than
1 mile (1.6 km) after a three-hour period.Refer
to “Tires – General Information” in “Starting
and Operating” for information on how to
properly inflate the vehicle’s tires. The tire
pressure will also increase as the vehicle is
driven - this is normal and there should be no
adjustment for this increased pressure.
The TPMS will warn the driver of a low tire
pressure if the tire pressure falls below the low
pressure warning threshold for any reason,
including low temperature effects, or natural
pressure loss through the tire. The TPMS will continue to warn the driver of low
tire pressure as long as the condition exists,
and will not turn off until the tire pressure is at or
above recommended cold tire pressure. Once
the “TPM Telltale Light” and the “TIRE LOW
PRESSURE” message appears, the tire pres-
sure must be increased to the recommended
cold tire pressure in order for the ”TPM Telltale
Light” and the “TIRE LOW PRESSURE” mes-
sage to be turned off. The system will automati-
cally update and the “TPM Telltale Light” and
the “TIRE LOW PRESSURE” message will turn
off once the updated tire pressures have been
received. The vehicle may need to be driven for
up to 20 minutes above 15 mph (24 km/h) to
receive this information.
For example, your vehicle has a recommended
cold (parked for more than three hours) tire
pressure of 33 psi (227 kPa). If the ambient
temperature is 68°F (20°C) and the measured
tire pressure is 28 psi (193 kPa), a temperature
drop to 20°F (-7°C) will decrease the tire pres-
sure to approximately 24 psi (165 kPa). This tire
pressure is sufficiently low enough to display
the “TPM Telltale Light” and the “TIRE LOW
PRESSURE” message. Driving the vehicle maycause the tire pressure to rise to approximately
28 psi (193 kPa), but the “TPM Telltale Light”
and the “TIRE LOW PRESSURE” message will
still display. In this situation, the “TPM Telltale
Light” and the “TIRE LOW PRESSURE” mes-
sage will turn OFF only after the tires have been
inflated to the vehicle’s recommended cold tire
pressure value.
CAUTION!
•
The TPMS has been optimized for the
original equipment tires and wheels. TPMS
pressures have been established for the
tire size equipped on your vehicle. Unde-
sirable system operation or sensor damage
may result when using replacement equip-
ment that is not of the same size, type,
and/or style. Aftermarket wheels can cause
sensor damage. Do not use aftermarket tire
sealants or balance beads if your vehicle is
equipped with a TPMS, as damage to the
sensors may result.
(Continued)
257

CAUTION!(Continued)
• After inspecting or adjusting the tire pres-
sure always reinstall the valve stem cap.
This will prevent moisture and dirt from
entering the valve stem, which could dam-
age the Tire Pressure Monitoring Sensor.
NOTE:
• The TPMS is not intended to replace nor-
mal tire care and maintenance, or to pro-
vide warning of a tire failure or condition.
• The TPMS should not be used as a tire
pressure gauge while adjusting your tire
pressure.
• Driving 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.
• The TPMS is not a substitute for proper
tire maintenance, and it is the driver’s
responsibility to maintain correct tire
pressure using an accurate tire gauge,
even if under-inflation has not reached the level to trigger the display of the “TPM
Telltale Light” and the “TIRE LOW PRES-
SURE” message.
• Seasonal temperature changes will affect
tire pressure, and the TPMS will monitor
the actual tire pressure in the tire.
Base SystemThe Tire Pressure Monitor System (TPMS) uses
wireless technology with wheel rim-mounted
electronic sensors to monitor tire pressure lev-
els. 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 regu-
larly check the tire pressure in all of your
tires, and to maintain the proper pressure.
The TPMS consists of the following compo-
nents:
•Receiver Module
• Four Tire Pressure Monitoring Sensors
• Tire Pressure Monitoring Telltale Light A low spare tire will not cause the “Tire Pressure
Monitoring Telltale Light” to illuminate, a warn-
ing message to appear, or the chime to sound.
The “Tire Pressure Monitoring Telltale
Light” will illuminate in the instrument
cluster, a “TIRE LOW PRESSURE”
message will display in the instrument
cluster for 5 seconds, and an audible chime will
be activated, when one or more of the four
active road tire pressures are low. Should this
occur, you should stop as soon as possible,
check the inflation pressure of each tire on your
vehicle, and inflate each tire to the vehicle’s
recommended cold placard pressure value.
The system will automatically update and the
“Tire Pressure Monitoring Telltale Light” will
extinguish, once the updated tire pressures
have been received. The vehicle may need to
be driven for up to 20 minutes above 15 mph
(24 km/h) to receive this information.
The “Tire Pressure Monitoring Telltale Light” will
flash on and off for 75 seconds, and remain on
solid when a system fault is detected. In addi-
tion, a “SERVICE TPM SYSTEM” message may
be displayed for approximately 5 seconds
when a system fault is detected, and a chime
258

will sound. If the ignition switch is cycled, this
sequence will repeat, providing the system
fault still exists. The “Tire Pressure Monitoring
Telltale Light” will turn off when the fault condi-
tion no longer exists. A system fault can occur
by any of the following:
1. Jamming due to electronic devices or driv-
ing next to facilities emitting the same Radio
Frequencies as the TPM sensors.
2. Installing some form of aftermarket window
tinting that affects radio wave signals.
3. Lots of snow or ice around the wheels or
wheel housings.
4. Using tire chains on the vehicle.
5. Using wheels/tires not equipped with TPM
sensors.
NOTE:
There is no tire pressure monitoring sensor
in the spare tire. The TPMS will not be able to
monitor the tire pressure. If you install the
spare tire, in place of a road tire, that has a
pressure below the low-pressure warning
limit, upon the next ignition switch cycle, a
chime will sound, a “TIRE LOW PRESSURE”message will be displayed in the instrument
cluster, and the “Tire Pressure Monitoring
Telltale Light” will turn ON. After driving the
vehicle for up to 20 minutes above 15 mph
(25 km/h), the “Tire Pressure Monitoring
Telltale Light” will flash on and off for
75 seconds and then remain on solid. In
addition, a “SERVICE TPM SYSTEM” mes-
sage will be displayed. For each subsequent
ignition switch cycle, a chime will sound, a
“SERVICE TPM SYSTEM” message will be
displayed, and the “Tire Pressure Monitor-
ing Telltale Light” will flash on and off for
75 seconds and then remain on solid. Once
you repair or replace the original road tire,
and reinstall it on the vehicle in place of the
spare tire, the TPMS will update automati-
cally and the “Tire Pressure Monitoring Tell-
tale Light” will turn OFF, as long as no tire
pressure is below the low-pressure warning
limit in any of the four active road tires. The
vehicle may need to be driven for up to
20 minutes above 15 mph (24 km/h) in order
for the TPMS to receive this information.Premium System – If EquippedThe Tire Pressure Monitor System (TPMS) uses
wireless technology with wheel rim-mounted
electronic sensors to monitor tire pressure lev-
els. 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 regu-
larly check the tire pressure in all of your
tires and to maintain the proper pressure.
The Tire Pressure Monitor System (TPMS) con-
sists of the following components:
•
Receiver Module
• Four Tire Pressure Monitoring Sensors
• Tire Pressure Monitoring Telltale Light
• Various Tire Pressure Monitoring System
Messages, which display in the Electronic
Vehicle Information Center (EVIC), and a
graphic displaying tire pressures
259

Tire Pressure Monitoring Low Pressure
Warnings
When one or more of the four active road tire
pressures are low, the “TPM Telltale Light” will
illuminate, an audible chime will sound, the
EVIC will display “Low Tire Pressure” message
for a minimum of five seconds, and a graphic
display of the pressure value(s) with the low
tire(s) “flashing.” Refer to “Electronic Vehicle
Information Center (EVIC)” in “Understanding
Your Instrument Panel” for further information.
NOTE:
Your system can be set to display pressure
units in PSI, kPa, or BAR.Should a low tire condition occur on any of the
four active road tire(s), you should stop as soon
as possible, and inflate the low tire(s) that is
“flashing” on the graphic display to the vehi-
cle’s recommended cold tire pressure. The
system will automatically update, the graphic
display of the pressure value(s) will stop “flash-
ing,” and the Low Pressure text message(s) will
switch off once the updated tire pressure(s)
have been received. The vehicle may need to
be driven for up to 20 minutes above 15 mph
(24 km/h) to receive this information.
SERVICE TPM SYSTEM Warning
When a system fault is detected, the “TPM
Telltale Light” will flash on and off for 75 sec-
onds then remain on solid, and a chime will
sound. The EVIC will display a “SERVICE TPM
SYSTEM” message. This message is then fol-
lowed by a graphic display, with “- -“ in place of
the pressure value(s), indicating which Tire
Pressure Monitoring Sensor(s) is not being re-
ceived.
NOTE:
Your system can be set to display pressure
units in PSI, kPa, or BAR.If the ignition switch is cycled, this sequence
will repeat, providing the system fault still ex-
ists. If the system fault no longer exists, the
“TPM Telltale Light” will no longer be illumi-
nated, the “SERVICE TPM SYSTEM
message
will not be present, and a pressure value will be
displayed instead of dashes. A system fault
can occur by any of the following:
1. Jamming due to electronic devices or driv-
ing next to facilities emitting the same Radio
Frequencies as the TPM sensors.
2. Installing some form of aftermarket window
tinting that affects radio wave signals.
260