Jeep Compass User Manual page 98

Tire Pressure Monitoring Low Pressure
Warnings
The Tire Pressure Monitoring System
Warning Light will illuminate in the
instrument cluster and a chime will
sound when tire pressure is low in one or
more of the four active road tires. In addition,
the instrument cluster will display a "Tire
Low" message and a graphic showing the
pressure values of each tire with the low tire
pressure values highlighted or in a different
color.
Should this occur, you should stop as soon as
possible and inflate the tires with low pres-
sure (those highlighted or in a different color
in the instrument cluster display graphic) to
the vehicle's recommended cold placard
pressure value. Once the system receives the
updated tire pressures, the system will auto-
matically update, the pressure values in the
graphic display in the instrument cluster will
stop being highlighted or return to their origi-
nal color, and the Tire Pressure Monitoring
System Warning Light will turn off.
96
NOTE:
When filling warm tires, the tire pressure may
need to be increased up to an additional 4 psi
(28 kPa) above the recommended cold plac-
ard pressure in order to turn the Tire Pressure
Monitoring System Warning Light off. The
vehicle may need to be driven for up to
10 minutes above 15 mph (24 km/h) in order
for the TPMS to receive this information.
Service TPMS Warning
When a system fault is detected, the Tire
Pressure Monitoring System Warning Light
will flash on and off for 75 seconds and then
remain on solid. The system fault will also
sound a chime. In addition, the instrument
cluster will display a "SERVICE TPM SYS-
TEM" message for a minimum of five seconds
and then display dashes (- -) in place of the
pressure value to indicate which sensor is not
being received.
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 System Warning
Light will no longer flash, and the "SERVICE
TPM SYSTEM" message will no longer dis-
play, and a pressure value will display in
place of the dashes. A system fault can occur
due to any of the following:
• Jamming due to electronic devices or driv-
ing next to facilities emitting the same
radio frequencies as the TPMS sensors.
• Installing some form of aftermarket window
tinting that affects radio wave signals.
• Lots of snow or ice around the wheels or
wheel housings.
• Using tire chains on the vehicle.
• Using wheels/tires not equipped with
TPMS sensors.
Vehicles With Compact Spare or Non-Matching
Full Size Spare
1. The compact spare tire or non-matching
full size does not have a tire pressure
monitoring sensor. Therefore, the TPMS
will not monitor the pressure in the com-
pact or non-matching full size spare tire.
2. If you install the compact or non-
matching full size 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 Tire Pressure Moni-