2012 JEEP LIBERTY spare tire

If the ignition key is cycled, this sequence will repeat,
providing the system fault still exists. If the system fault
no longer exists, the “Tire Pressure Monitoring Telltale
Light” will no longer flash, and the “SERVICE TPM
SYSTEM message will no longer display, and a pressure
value will display in place of the dashes. A system fault
can occur due to any of the following:
1. Jamming due to electronic devices or driving next to
facilities emitting the same radio frequencies as the TPMS
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 TPMS sensors.Vehicles With Full-Size Spare
1. The matching full size spare wheel and tire assembly
has a tire pressure monitoring sensor that can be moni-
tored by the TPMS.
2. If you install the full size spare in place of a road tire
that has a pressure below the low-pressure warning limit,
a chime will sound and the “TPMS Telltale Light” will
turn on upon the next ignition key cycle. In addition, the
EVIC will display a Low Pressure message and a graphic
showing the low tire pressure value flashing.
3. After driving the vehicle for up to 20 minutes above
15 mph (24 km/h) the “TPMS Telltale 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.
4.
The EVIC will display a graphic showing the tire
pressure value in place of the flashing low tire pressure
value. The EVIC will also display a “SPARE LOW PRES-
SURE” message to remind you to service the flat tire.
5
STARTING AND OPERATING 397

Vehicles With Compact Spare
1. The compact spare tire does not have a tire pressure
monitoring sensor. Therefore, the TPMS will not monitor
the pressure in the compact spare tire.
2. If you install the compact spare tire in place of a road
tire that has a pressure below the low-pressure warning
limit, upon the next ignition key cycle, the “TPMS Telltale
Light” will remain on and a chime will sound. In
addition, the graphic in the EVIC will still display a
flashing pressure value.
3. After driving the vehicle for up to 20 minutes above
15 mph (24 km/h), the “TPMS Telltale Light” will flash
on and off for 75 seconds and then remain on solid. In
addition, the EVIC will display a “SERVICE TPM SYS-
TEM” message for five seconds and then display dashes
(- -) in place of the pressure value.4. For each subsequent ignition key cycle, a chime will
sound, the “TPMS Telltale Light” will flash on and off for
75 seconds and then remain on solid, and the EVIC will
display a “SERVICE TPM SYSTEM” message for five
seconds and then display dashes (- -) in place of the
pressure value.
5. Once you repair or replace the original road tire and
reinstall it on the vehicle in place of the compact spare,
the TPMS will update automatically. In addition, the
“TPMS Telltale Light” will turn off and the graphic in the
EVIC will display a new pressure value instead of dashes
(- -), 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.
398 STARTING AND OPERATING

Towing Requirements – Tires

Do not attempt to tow a trailer while using a compact
spare tire.
Proper tire inflation pressures are essential to the safe
and satisfactory operation of your vehicle. Refer to
“Tires – General Information” in “Starting and Oper-
ating” for information on tire pressures and for proper
tire inflation procedures.
Check the trailer tires for proper tire inflation pres-
sures before trailer usage.
Check for signs of tire wear or visible tire damage
before towing a trailer. Refer to “Tires – General
Information” in “Starting and Operating” for informa-
tion on tread wear indicators and for the proper
inspection procedure.
When replacing tires, refer to “Tires – General Infor-
mation” in “Starting and Operating” for information on replacement tires and for the proper tire replace-
ment procedures. Replacing tires with a higher load
carrying capacity will not increase the vehicle’s GVWR
and GAWR limits.
Towing Requirements – Trailer Brakes

Do
not interconnect the hydraulic brake system or
vacuum system of your vehicle with that of the trailer.
This could cause inadequate braking and possible
personal injury.
An electronically actuated trailer brake controller is
required when towing a trailer with electronically
actuated brakes. When towing a trailer equipped with
a hydraulic surge actuated brake system, an electronic
brake controller is not required.
Trailer brakes are recommended for trailers over
1,000 lbs (454 kg) and required for trailers in excess of
2,000 lbs (907 kg).
420 STARTING AND OPERATING

WHAT TO DO IN EMERGENCIES
CONTENTS
Hazard Warning Flashers ................ 434
 If Your Engine Overheats ................ 434
 Jacking And Tire Changing ............... 435
▫ Jack Location ....................... 436
▫ Spare Tire Stowage ................... 436
▫ Spare Tire Removal ................... 437
▫ Preparations For Jacking ............... 438
▫ Jacking Instructions ................... 439
▫ Road Tire Installation ................. 443 
Jump-Starting Procedures ................ 444
▫ Preparations For Jump-Start ............. 444
▫ Jump-Starting Procedure ............... 446
 Freeing A Stuck Vehicle ................. 448
 Shift Lever Override ................... 449
 Towing A Disabled Vehicle ............... 450
▫ Towing Without The Ignition Key Fob ..... 452
▫ Two-Wheel Drive Models .............. 452
▫ Four-Wheel Drive Models .............. 454
6

WARNING! (Continued)
•The jack is designed to be used as a tool for
changing tires only. The jack should not be used to
lift the vehicle for service purposes. The vehicle
should be jacked on a firm level surface only.
Avoid ice or slippery areas.
Jack Location
The scissor-type jack and tire changing tools are located
in the cargo compartment behind a trim cover on the left
rear trim panel. The latch is located at the bottom of the
trim cover.
Spare Tire Stowage
The spare tire is stowed underneath the rear of the
vehicle and is held in place by a cable winch mechanism.
Jack Storage Location
436 WHAT TO DO IN EMERGENCIES

Spare Tire Removal
Fit the jack handle extension over the drive nut located in
the rear cargo area inside the vehicle. Use the lug wrench
to rotate the nut counterclockwise until the spare is on
the ground with enough slack in the cable to allow you to
pull the tire out from under the vehicle.CAUTION!
The winch mechanism is designed for use with the
jack extension tube only. Use of an air wrench or
other power tools is not recommended and they can
damage the winch.
When the spare is clear, tilt the retainer at the end of the
cable, and pull it through the center of the wheel.
NOTE: Refer to “Compact Spare Tire” under “Tires-
General Information” in “Starting And Operating” for
information about the compact spare tire, its use, and
operation.
Lowering/Raising Spare Tire
6
WHAT TO DO IN EMERGENCIES 437

CAUTION!
Do not attempt to raise the vehicle by jacking on
locations other than those indicated in the Jacking
Instructions for this vehicle.
1. Remove spare tire.
2. Remove jack and tools from mounting bracket. As-
semble the tools by connecting the driver to the exten-
sion, and then to the lug wrench.
3. Loosen (but do not remove) the wheel lug nuts by
turning them to the left one turn while the wheel is still
on the ground.
4. Locate the jack as shown. For the front tires, place it
(rearward) of the notch on the body weld seam behind
wheel to be changed. For the rear tires, place it under the axle by the wheel to
be changed.
Front Jacking Location
440 WHAT TO DO IN EMERGENCIES

Position the jack handle on the jack.Do not raise the
vehicle until you are sure the jack is fully engaged. 5. Raise the vehicle by turning the jack screw to the right.
Raise the vehicle only until the tire just clears the surface
and enough clearance is obtained to install the spare tire.
Minimum tire lift provides maximum stability.
WARNING!
Raising the vehicle higher than necessary can make
the vehicle less stable and cause a collision. It could
slip off the jack and hurt someone near it. Raise the
vehicle only enough to remove the tire.
6. Remove the lug nuts and wheel.
7. Position the spare wheel/tire on the vehicle and install
lug nuts with the cone-shaped end toward the wheel.
Lightly tighten the nuts.
Rear Jacking Location6
WHAT TO DO IN EMERGENCIES 441