Ram Trucks 2015 ProMaster - Owner Manual - Manual (Page 266)

the “Tire Pressure Monitoring Unavailable” text message
will display. If the ignition key 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:
1. Jamming due to electronic devices or driving next to
facilities emitting the same radio frequencies as the
TPM sensors.
2. Installing some form of aftermarket window tinting
that affects radio wave signals.
3. Snow or ice around the wheels or wheel housings.
4. Using tire chains on the vehicle.
5. Using wheels/tires not equipped with TPM sensors.
NOTE: Your vehicle is equipped with a regular size
spare wheel.
1. The spare tire has a tire pressure monitoring sensor,
but it is not monitored until it is mounted in place of
any of the existing four road tires.
2. If you install the 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 Tire Pressure Monitoring Telltale Light will
turn ON due to the low tire condition. Then, after
driving the vehicle for up to 20 minutes above 15mph
(24km/h), the system will recognize the new sensor, so
turn off the telltale.
3. If a spare tire not equipped with tire pressure moni-
toring sensor is used, then the Tire Pressure Monitor-
ing Telltale Light will turn ON, flashing for 75 seconds
and then remaining solid for each subsequent ignition
key cycle.
264 STARTING AND OPERATING