Jeep Wrangler2018 Owner's Manual page 230

228 SAFETY
Tire Pressure Monitoring Low Pressure Warnings
The Tire Pressure Monitoring Telltale 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 for a minimum of
five seconds, an Inflate to XX message and a graphic
showing the pressure values of each tire with the low tire
pressure values in a different color.
Tire Pressure Monitoring Low Pressure Warning
Should this occur, you should stop as soon as possible and
inflate the tires with low pressure (those in a different color
in the instrument cluster graphic) to the vehicle's recom-
mended cold placard pressure value as shown in the
Inflate to XX message. Once the system receives the
updated tire pressures, the system will automatically up-
date, the pressure values in the graphic display in the
instrument cluster will return to their original color, and
the Tire Pressure Monitoring Telltale Light will turn off.
NOTE: When filling warm tires, the tire pressure may need
to be increased up to an additional 4 psi (30 kPa) above the
recommended cold placard pressure in order to turn the
Tire Pressure Monitoring Telltale Light off.
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.
Service TPMS Warning
When a system fault is detected, the Tire Pressure Monitoring
Telltale 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
TIRE PRESSURE SYSTEM 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.