Tire Pressure Unavailable
WARNING: This page is about a different car, the 2003 Chrysler 300M and 2002 Chrysler 300M. However, it is still accessible from the selected car via links, so may be relevant.
The EVIC can detect high radio noise interference. When the noise level is too high to distinguish a transmission from a sensor/transmitter, it will display TIRE PRESSURE UNAVAILABLE for 5 seconds, request a chime and switch to the graphic display and show dashed lines instead of the tire pressure for the wheel(s) affected by the radio interference.