Chrysler 2008 Pacifica - Manual (Page 323)

If the ignition key is cycled, this sequence will repeat,
providing the system fault still exists If the system fault
no longer exists, the TPMS Telltale Light will no longer
flash, the “SERVICE TIRE SYSTEM SOON” text mes-
sage will not be present, and a pressure value will be
displayed instead of dashes. A system fault can occur
with any of the following scenarios:
1. Jamming due to electronic devices or driving next to
facilities emitting the same radio frequencies as the TPMS
sensors.
2. Installing some form of aftermarket window tinting
that affects radio wave signals.
3. Accumulation of excessive snow and/or ice around
the wheels or wheel housings.
4. Using tire chains on the vehicle.
5. Using wheels/tires not equipped with TPMS sensors.
Check TPM System Display
STARTING AND OPERATING 323
5