2012 JEEP LIBERTY sensor

If there is a fault present in the air bag system, the Air Bag
Warning Light (a red light located in the center of the
instrument cluster directly in front of the driver) will be
turned on. This indicates that you should have an autho-
rized dealer service the system immediately. The Air Bag
Warning Light is turned on whenever there is a fault that
can affect the operation of the air bag system. If there is a
fault present in the PAD Indicator Light, the Air Bag
Warning Light will be illuminated to show that the
passenger Advanced Front Air Bag may be turned off
until the fault is cleared. If the Air Bag Warning Light is
illuminated, have an authorized dealer service the air bag
system immediately. If an object is lodged under the seat
and interferes with operation of the weight sensors, a
fault will occur which turns on both the PAD Indicator
Light and the Air Bag Warning Light. Once the lodged
object is removed, the fault will be automatically cleared
after a short period of time.Driver And Passenger Advanced Front Air Bag
Inflator Units
TheDriver And Passenger Advanced Front Air Bag
Inflator Units are located in the center of the steering
wheel and on the right side of the instrument panel.
When the ORC detects a collision requiring the Ad-
vanced Front Air Bags, it signals the inflator units. A large
quantity of non-toxic gas is generated to inflate the
Advanced Front Air Bags. Different air bag inflation rates
are possible based on collision severity and type. The
steering wheel hub trim cover and the upper right side of
the instrument panel separate and fold out of the way as
the air bags inflate to their full size. The air bags fully
inflate in about 50 to 70 milliseconds. This is about half of
the time it takes to blink your eyes. The air bags then
quickly deflate while helping to restrain the driver and
front passenger.
70 THINGS TO KNOW BEFORE STARTING YOUR VEHICLE

The Advanced Front Air Bag gas is vented through the
vent holes in the sides of the air bag. In this way, the air
bags do not interfere with your control of the vehicle.
Along with seat belts and pretensioners, Advanced Front
Air Bags work with the knee bolsters to provide im-
proved protection for the driver and front passenger. Side
air bags also work with seat belts to improve occupant
protection.
Supplemental Side Air Bag Inflatable Curtains
(SABIC) Inflator Units
TheSupplemental Side Air Bag Inflatable Curtains
(SABIC) may deploy during rollovers and collisions
where the impact is confined to a particular area of the
side of the vehicle, depending on the severity and type of
collision. In these events, the ORC will deploy the SABIC
only on the impact side of the vehicle. Because air bag
sensors estimate deceleration over time, vehicle speed and damage by themselves are not good indicators of
whether or not an air bag should have deployed.
A quantity of non-toxic gas is generated to inflate the
SABIC. The inflating SABIC pushes the outside edge of
the headliner out of the way and covers the window. The
air bag inflates in about 30 milliseconds (about one
quarter of the time it takes to blink your eyes) with
enough force to injure you if you are not belted and
seated properly, or if items are positioned in the area
where the SABIC inflates. This especially applies to
children. The SABIC is only about 312inches (9 cm) thick
when it is inflated.
The system includes side impact sensors that are cali-
brated to deploy the side air bags during impacts that
require air bag occupant protection.
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THINGS TO KNOW BEFORE STARTING YOUR VEHICLE 71

WARNING!
Unapproved modifications or service procedures to
the front passenger seat assembly, its related compo-
nents or seat cover may inadvertently change the air
bag deployment in case of a frontal crash. This could
result in death or serious injury to the front seat
passenger if the vehicle is involved in a collision. A
modified vehicle may not comply with required
Federal Motor Vehicle Safety Standards (FMVSS)
and/or Canadian Motor Vehicle Safety Standards
(CMVSS).
Front And Side Impact Sensors
In front and side impacts, impact sensors can aid the
ORC in determining appropriate response to impact
events.
Enhanced Accident Response System
In the event of an impact causing air bag deployment, if
the communication network remains intact, and the
power remains intact, depending on the nature of the
event the ORC will determine whether to have the
Enhanced Accident Response System perform the follow-
ing functions:
•Cut off fuel to the engine.
•Flash hazard lights as long as the battery has power or
until the ignition key is turned off.
•Turn on the interior lights, which remain on as long as
the battery has power or until the ignition key is
removed.
•Unlock the doors automatically.
In order to reset the Enhanced Accident Response System
functions after an event, the ignition switch must be
changed from IGN ON to IGN OFF.
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THINGS TO KNOW BEFORE STARTING YOUR VEHICLE 73

▫To Deactivate ....................... 174
▫ To Resume Speed .................... 174
▫ To Vary The Speed Setting .............. 174
▫ To Accelerate For Passing .............. 175
 Parksense Rear Park Assist — If Equipped . . . 176
▫ Parksense Sensors................... 176
▫ Parksense Warning Display ............ 176
▫ Parksense Display................... 177
▫ Enabling And Disabling Parksense ....... 180
▫ Service The Parksense Rear Park Assist
System ............................ 181
▫ Cleaning The Parksense System......... 181
▫ Parksense System Usage Precautions ...... 182
Garage Door Opener — If Equipped ........ 184
▫ Before You Begin Programming
HomeLink ........................ 186
▫ Programming A Rolling Code ........... 186
▫ Programming A Non-Rolling Code ........ 188
▫ Canadian/Gate Operator Programming .... 189
▫ Using HomeLink ................... 191
▫ Security ........................... 191
▫ Troubleshooting Tips .................. 192
▫ General Information .................. 193
 Power Sunroof — If Equipped ............ 193
▫ Opening Sunroof — Express ............ 194
▫ Opening Sunroof — Manual Mode ........ 194
96 UNDERSTANDING THE FEATURES OF YOUR VEHICLE

Automatic Dimming Mirror — If Equipped
This mirror automatically adjusts for headlight glare
from vehicles behind you. You can turn the feature on or
off by pressing the button at the base of the mirror. A light
to the left of the button will illuminate to indicate when
the dimming feature is activated. The sensor to the right
of the button does not illuminate.
NOTE:This feature is disabled when the vehicle is
moving in reverse.
CAUTION!
To avoid damage to the mirror during cleaning, never
spray any cleaning solution directly onto the mirror.
Apply the solution onto a clean cloth and wipe the
mirror clean.
Automatic Dimming Mirror
100 UNDERSTANDING THE FEATURES OF YOUR VEHICLE

NOTE:
•The rain-sensing feature will not operate when the
wiper speed is in the low or high position.
•The rain-sensing feature may not function properly
when ice or dried salt water is present on the wind-
shield.
•Use of Rain-Xor products containing wax or silicone
may reduce rain sensor performance.
•The rain-sensing feature can be turned on and off
through the Electronic Vehicle Information Center
(EVIC) — if equipped. Refer to “Electronic Vehicle
Information Center (EVIC)/Personal Settings
(Customer-Programmable Features)” in “Understand-
ing Your Instrument Panel” for further information. The rain-sensing system has protective features for the
wiper blades and arms. It will not operate under the
following conditions:
•Low Temperature Wipe Inhibit
— The rain-sensing
feature will not operate when the ignition is first
switched ON, the vehicle is stationary, and the outside
temperature is below 32° F (0° C). If the wiper control
is moved, the vehicle speed becomes greater than
0 mph (0 km/h), or the outside temperature rises
above freezing the rain-sensing feature will then op-
erate.
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UNDERSTANDING THE FEATURES OF YOUR VEHICLE 169

PARKSENSEREAR PARK ASSIST — IF
EQUIPPED
The ParkSense Rear Park Assist system provides visual
and audible indications of the distance between the rear
fascia and a detected obstacle when backing up, e.g.
during a parking maneuver. Refer to ParkSense System
Usage Precautions for limitations of this system and
recommendations.
ParkSense will retain the last system state (enabled or
disabled) from the last ignition cycle when the ignition is
changed to the ON/RUN position.
ParkSense can be active only when the shift lever is in
REVERSE. If ParkSense is enabled at this shift lever
position, the system will remain active until the vehicle
speed is increased to approximately 11 mph (18 km/h) or
above. The system will become active again if the vehicle
speed is decreased to speeds less than approximately
10 mph (16 km/h).
ParkSense Sensors
The four ParkSense sensors, located in the rear fascia/
bumper, monitor the area behind the vehicle that is
within the sensors’ field of view. The sensors can detect
obstacles from approximately 12 in (30 cm) up to 79 in
(200 cm) from the rear fascia/bumper in the horizontal
direction, depending on the location, type and orienta-
tion of the obstacle.
ParkSense Warning Display
The ParkSense Warning screen will only be displayed if
Sound and Display is selected from the Customer- Pro-
grammable Features section of the Electronic Vehicle
Information Center (EVIC). Refer to “Electronic Vehicle
Information Center (EVIC)/Personal Settings (Customer-
Programmable Features)” in “Understanding Your In-
strument Panel” for further information.
176 UNDERSTANDING THE FEATURES OF YOUR VEHICLE

When the ParkSenseswitch is pressed to
disable the system, the instrument cluster will
display the “PARK ASSIST OFF” message for
approximately five seconds. Refer to “Elec-
tronic Vehicle Information Center (EVIC)” in “Under-
standing Your Instrument Panel” for further information.
When the shift lever is moved to REVERSE and the
system is disabled, the EVIC will display the “PARK
ASSIST OFF” message for as long as the vehicle is in
REVERSE.
The ParkSense switch LED will be ON when
ParkSense is disabled or defective. The ParkSense 
switch LED will be OFF when the system is enabled.
Service The ParkSense Rear Park Assist System
When the ParkSenseRear Park Assist System is mal-
functioning, the instrument cluster will actuate a single
chime, once per ignition cycle, and it will display the
“SERVICE PARK ASSIST SYSTEM” message. Refer to “Electronic Vehicle Information Center (EVIC)” in “Un-
derstanding Your Instrument Panel” for further informa-
tion. When the shift lever is moved to REVERSE and the
system has detected a faulted condition, the EVIC will
display the “SERVICE PARK ASSIST SYSTEM” message
for as long as the vehicle is in REVERSE. Under this
condition, ParkSense
will not operate.
If “SERVICE PARK ASSIST SYSTEM” appears in the
EVIC make sure the rear fascia/bumper is clean and clear
of snow, ice, mud, dirt or other obstruction and then cycle
the ignition. If the message appears again, see an autho-
rized dealer.
Cleaning The ParkSense System
Clean the ParkSense sensors with water, car wash soap
and a soft cloth. Do not use rough or hard cloths. Do not
scratch or poke the sensors. Otherwise, you could dam-
age the sensors.
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UNDERSTANDING THE FEATURES OF YOUR VEHICLE 181