Dodge Grand Caravan Owner's Manual page 402

400 STARTING AND OPERATING
The Basic TPMS consists of the following components:
• Receiver Module
• Four Tire Pressure Monitoring Sensors
• TPMS Telltale Warning Light
Tire Pressure Monitoring Low Tire Pressure
Warnings
The "Tire Pressure Monitoring Telltale Light"
will illuminate in the instrument cluster, a "LOW
TIRE PRESSURE" message will display in the
instrument cluster, and an audible chime will be
activated when one or more of the four active road tire
pressures are low. Should this occur, you should stop as
soon as possible, check the inflation pressure of each tire on
your vehicle, and inflate each tire to the vehicle's recom-
mended cold tire placard pressure value (located on the
placard label on the driver's-side B-Pillar).
NOTE: When filling warm tires, the tire pressure may
need to be increased up to an additional 4 psi (30 kPa)
above the recommended cold placard pressure in order to
turn the Tire Pressure Monitoring Telltale Light off.
The system will automatically update and the "Tire Pres-
sure Monitoring Telltale Light" will extinguish once the
updated tire pressures have been received.
NOTE: The vehicle may need to be driven for up to 20
minutes above 15 mph (24 km/h) to receive this informa-
tion.
SERVICE TPM SYSTEM
The "Tire Pressure Monitoring Telltale Light" will flash on
and off for 75 seconds, and remain on solid when a system
fault is detected. The system fault will also sound a chime.
If the ignition switch is cycled, this sequence will repeat,
providing the system fault still exists. The "Tire Pressure
Monitoring Telltale Light" will turn off when the fault
condition no longer exists. A system fault can occur with
any of the following scenarios:
• Jamming due to electronic devices or driving next to
facilities emitting the same radio frequencies as the
TPMS sensors.
• Installing some form of aftermarket window tinting that
affects radio wave signals.
• Accumulation of excessive snow and/or ice around the
wheels or wheel housings.