Dodge Grand Caravan Owner's Manual page 350

350 STARTING AND OPERATING
NOTE: The vehicle may need to be driven for up to 10
minutes above 15 mph (25 km/h) to receive this infor-
mation.
The TPMS Telltale Lamp will flash on and off for 75
seconds, and remain on sold when a system fault is
detected. The system fault will also sound a chime. If the
ignition key is cycled, this sequence will repeat, provid-
ing the system fault still exists. The TPMS Telltale Lamp
will turn off when the fault condition no longer exists. A
system fault can occur with any of the following sce-
narios:
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.
NOTE:
1. The compact spare tire (if so equipped) does not have
a TPMS Sensor. Therefore the TPMS will not monitor the
pressure in the compact spare tire.
2. If you install the compact spare tire in place of a road
tire that has a pressure below the low-pressure warning
limit, upon the next ignition key cycle, a chime will
sound and the TPMS Telltale Light will turn on.
3. After driving for up to 10 minutes above 15 mph (25
km/h), the TPMS Telltale Light will flash on and off for
75 seconds and then remain on solid.