Jeep 2009 Grand Cherokee Owner's Manual page 209

Tire Pressure Monitor System (shows the current pres-
sure of all four road tires.) For additional information,
refer to "Tire Pressure Monitor System" in Section 5 of
this manual.
Tire Pressure Display
UNDERSTANDING YOUR INSTRUMENT PANEL 207
NOTE:
Tires heat up during normal driving conditions. Heat
will cause the tire pressure to increase from 2 to 6 psi
(14 to 41 kPa) during normal driving conditions. Refer
to "Tires-General Information/Tire Inflation Pres-
sures" in Section 5 for additional information.
Your system can be set to display pressure units in PSI,
kPa, or BAR.
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