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If the ignition key is cycled, this sequence will repeat,
providing the system fault still exists. If the system fault no
longer exists, the Tire Pressure Monitoring System Warning
Light will no longer flash, and the “SERVICE TPM SYS-
TEM” message will no longer display, and a pressure value
will display in place of the dashes. A system fault can occur
due to any of the following:
• 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.
• Lots of snow or ice around the wheels or wheel hous-
ings.
• Using tire chains on the vehicle.
• Using wheels/tires not equipped with TPMS sensors.
Vehicles With Compact Spare or Non-Matching Full Size
Spare
1. The compact spare tire or non-matching full size does
not have a tire pressure monitoring sensor. Therefore,
the TPMS will not monitor the pressure in the compact
or non-matching full size spare tire.
2. If you install the compact or non-matching full size
spare tire in place of a road tire that has a pressure below
the low-pressure warning limit, upon the next ignition
key cycle, the Tire Pressure Monitoring System Warning
Light will remain on and a chime will sound. In
addition, the graphic in the instrument cluster will still
display a different color or highlighted pressure value
and the “Inflate to XX” message.
3. After driving the vehicle for up to 20 minutes above
15 mph (24 km/h), the Tire Pressure Monitoring System
Warning Light will flash on and off for 75 seconds and
then remain on solid. In addition, the instrument cluster
will display a “SERVICE TPM SYSTEM” message for
five seconds and then display dashes (- -) in place of the
pressure value.
4. For each subsequent ignition key cycle, a chime will
sound, the Tire Pressure Monitoring System Warning
Light will flash on and off for 75 seconds and then
remain on solid, and the instrument cluster will display
a “SERVICE TPM SYSTEM” message for five seconds
and then display dashes (- -) in place of the pressure
value.
166 SAFETY
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