Jeep Grand Cherokee 2020 Owner's Manual page 142

140 SAFETY
CAUTION! (Continued)
After inspecting or adjusting the tire pres-

sure, always reinstall the valve stem cap.
This will prevent moisture and dirt from
entering the valve stem, which could
damage the Tire Pressure Monitoring
Sensor.
NOTE:
The TPMS is not intended to replace normal

tire care and maintenance, or to provide
warning of a tire failure or condition.
The TPMS should not be used as a tire pres-

sure gauge while adjusting your tire pressure.
Driving on a significantly under-inflated tire

causes the tire to overheat and can lead to
tire failure. Under-inflation also reduces fuel
efficiency and tire tread life, and may affect
the vehicle's handling and stopping ability.
The TPMS is not a substitute for proper tire

maintenance, and it is the driver's responsi-
bility to maintain correct tire pressure using
an accurate tire gauge, even if under-infla-
tion has not reached the level to trigger illu-
mination of the TPMS Warning Light.
Seasonal temperature changes will affect

tire pressure, and the TPMS will monitor the
actual tire pressure in the tire.
The Tire Pressure Monitoring 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.
Tire Pressure Monitoring Display
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 Monitoring System (TPMS)
consists of the following components:
Receiver Module

Four Tire Pressure Monitoring Sensors

Various Tire Pressure Monitoring System

Messages, which display in the instrument
cluster, and a graphic displaying tire
pressures
TPMS Warning Light

Tire Pressure Monitoring Low Pressure
Warnings
The TPMS Warning Light will
illuminate in the instrument cluster,
and an audible chime will be
activated, when one or more of the
four active road tire pressures are low. In
addition, the instrument cluster will display an
"Inflate to XX" message and a graphic display of
the pressure value(s) with the low tire(s) in a
different color. Refer to "Instrument Cluster
Display" in "Getting To Know Your Instrument
Panel" for further information.