User Manual - Page 645

For RAM 2015 2500.

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SYSTEM message will no longer display, and a pressure
value will display in place of the dashes. A system fault
can occur due to any of the following:
Signal interference due to electronic devices or driving
next to facilities emitting the same radio frequencies as
the TPM sensors.
Installing aftermarket window tinting that contains
materials that may block radio wave signals.
Accumulation of snow or ice around the wheels or
wheel housings.
Using tire chains on the vehicle.
Using wheels/tires not equipped with TPM sensors.
Vehicles With Matching Full Size Spare
The matching full size spare wheel and tire assembly
has a TPM sensor that can be monitored by the TPMS.
If you install the full size spare in place of a road tire
that has a pressure below the low-pressure warning
limit, upon the next ignition switch cycle, a chime will
sound and the “Tire Pressure Monitoring Telltale
Light” will turn ON. In addition, the EVIC/DID will
display a “LOW TIRE” message and a graphic show-
ing the low tire pressure value in a different color. An
Inflate to XX message will also be displayed.
After driving the vehicle for up to 20 minutes above
15 mph (25 km/h) the “Tire Pressure Monitoring
Telltale Light” will turn OFF and the pressure value
will be updated and return to it’s original color, as long
as no tire pressure is below the low-pressure warning
limit in any of the four active road tires.
5
STARTING AND OPERATING 643
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