Jeep 2015 Grand Cherokee - Owner Manual - Manual (Page 520)

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 responsibility to maintain correct tire
pressure using an accurate tire gauge, even if under-
inflation has not reached the level to trigger illumination
of the Tire Pressure Monitoring Telltale Light.
• Seasonal temperature changes will affect tire pressure,
and the TPMS will monitor the actual tire pressure in
the tire.
Premium System
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.
Tire Pressure Monitor Display
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