SAFETY 237
display a "SERVICE TPM SYSTEM" message for
a minimum of five seconds and then display
dashes (- -) in place of the pressure value to
indicate which sensor is not being received.
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
SYSTEM” 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 housings.
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 System 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.
3. After driving the vehicle for up to
10 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.
5. Once you repair or replace the original road
tire and reinstall it on the vehicle in place of
the compact spare, the TPMS will update
automatically. In addition, the Tire Pressure
Monitoring System Warning Light will turn
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