2012 JEEP GRAND CHEROKEE TPMS

for 75 seconds and then remain on solid. In addition, a
“SERVICE TPM SYSTEM” message will be displayed for
a minimum of five seconds. For each subsequent ignition
switch cycle, a chime will sound, a “SERVICE TPM
SYSTEM” message will be displayed for a minimum of
five seconds, and the Tire Pressure Monitoring 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 automatically and the Tire Pressure
Monitoring 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. 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 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 regularly
check the tire pressure in all of your tires and to maintain
the proper pressure.
The Tire Pressure Monitor System (TPMS) consists of the
following components:
•Receiver Module
•Four Tire Pressure Monitoring Sensors
•Various Tire Pressure Monitoring System Messages,
which display in the Electronic Vehicle Information
Center (EVIC), and a graphic displaying tire pressures
504 STARTING AND OPERATING

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 driving 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.
The EVIC will also display aSERVICE TPM SYSTEM
message for a minimum of five seconds when a system
fault is detected possibly related to an incorrect sensor
location fault. In this case, the SERVICE TPM SYSTEMmessage is then followed by a graphic display, with
pressure values still shown. This indicates the pressure
values are still being received from the TPM Sensors but
they may not be located in the correct vehicle position.
However, the system still needs to be serviced as long as
the
SERVICE TPM SYSTEM message exists.
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, the Tire Pres-
sure Monitoring Telltale Light will remain ON, a chime
will sound, and the EVIC will still display a “flashing”
pressure value in the graphic display. After driving the
vehicle for up to 20 minutes above 15 mph (24 km/h), the
Tire Pressure Monitoring Telltale Light will flash on and
off for 75 seconds and then remain on solid. In addition,
the EVIC will display a “SERVICE TPM SYSTEM mes-
sage for five seconds and then display dashes (- -) in
5
STARTING AND OPERATING 507

place of the pressure value. For each subsequent ignition
switch cycle, a chime will sound, the Tire Pressure
Monitoring Telltale Light will flash on and off for 75 sec-
onds and then remain on solid, and the EVIC will display
aSERVICE TPM SYSTEM message for five seconds and
then display dashes (- -) in place of the pressure value.
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 automatically.
In addition, the Tire Pressure Monitoring 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.General Information
This device complies with part 15 of the FCC rules and
RSS 210 of Industry Canada. Operation is subject to the
following conditions:
•This device may not cause harmful interference.
•This device must accept any interference received,
including interference that may cause undesired
operation.
The tire pressure sensors are covered under one of the
following licenses:
United States ................... MRXC4W4MA4
Canada ..................... 2546A-C4W4MA4
508 STARTING AND OPERATING

Light Bulbs............................. 98
Lights .............................. 98,180
Airbag ...................... 74,79,96,285
Anti-Lock .......................... 292
Automatic Headlights ................. 181
Back-Up ........................... 620
Brake Assist Warning .................. 476
Brake Warning ...................... 290
Bulb Replacement .................... 617
Cargo ............................. 270
Center Mounted Stop .................. 621
Daytime Running .................... 183
Dimmer Switch, Headlight .............. 180
Electronic Stability Program (ESP) Indicator . . 476
Exterior ............................ 98
Fog ............................ 287,619
Fuses ............................. 610
Hazard Warning Flasher ............... 548
Headlights ...................... 617,618Headlights On With Wipers
............. 181
High Beam Indicator .................. 287
Hill Descent Control Indicator ........... 287
Illuminated Entry ..................... 23
Low Fuel .......................... 306
Malfunction Indicator (Check Engine) ...... 285
Map Reading ....................... 186
Reading ........................ 186,240
Rear Servicing ....................... 620
Rear Tail ........................... 620
Seat Belt Reminder ................... 290
Security Alarm (Theft Alarm) ............ 293
Service ............................ 617
Service Engine Soon
(Malfunction Indicator) ................ 285
Side Marker ........................ 620
SmartBeams ........................ 182
Tire Pressure Monitoring (TPMS) ......... 288
Tow/Haul Indicator .................. 287
10
INDEX 665

Supplemental Restraint System - Airbag........ 66
Suspension, Air ......................... 448
Sway Control, Trailer ..................... 470
Synthetic Engine Oil ...................... 581
System, Remote Starting .................... 29
Tachometer ............................ 285
Telescoping Steering Column .............194,195
Temperature Control, Automatic (ATC) ........ 398
Temperature Gauge, Engine Coolant .......... 294
Tether Anchor, Child Restraint ............... 85
Text Messaging ......................... 143
Tie Down Hooks, Cargo ................... 273
Tilt Steering Column ................... 194,195
Tire and Loading Information Placard ......... 483
Tire Identification Number (TIN) ............. 481
Tire Markings .......................... 477
Tire Safety Information .................... 477 Tires ............................
98,487,653
Air Pressure ........................ 488
Chains ............................ 496
Changing .......................... 549
Compact Spare ...................... 491
General Information .................. 487
High Speed ......................... 490
Inflation Pressures .................... 488
Jacking ............................ 549
Life of Tires ........................ 494
Load Capacity .................... 483,484
Pressure Monitor System (TPMS) ......... 499
Pressure Warning Light ................ 288
Quality Grading ..................... 653
Radial ............................ 490
Replacement ........................ 495
Rotation ........................... 498
Safety ............................. 477
Sizes ............................. 479
672 INDEX