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238 SAFETY
Tire Pressure Monitoring System
Operation
TPMS uses wireless technology with wheel rim
mounted electronic sensors to monitor tire
pressure levels. Sensors, mounted to each wheel
as part of the valve stem, transmit tire pressure
readings to the receiver module.
NOTE:
It is particularly important for you to check the tire
pressu
re in all of the tires on your vehicle monthly
and to maintain the proper pressure.
The TPMS consists of the following components:
Receiver module
Four Tire Pressure Monitoring System sensors
Various Tire Pressure Monitoring System
messages, which display in the instrument
cluster
Tire Pressure Monitoring System Light
TIRE PRESSURE MONITORING SYSTEM LOW
PRESSURE WARNINGS
The Tire Pressure Monitoring System
Light will illuminate in the instrument
c
l
u
s
t
e
r and a chime will sound when tire
pressure is low in one or more of the four
active road tires. In addition, the instrument
cluster will display a "Tire Low" message for a
minimum of five seconds and a graphic showing
the pressure values of each tire with the low tire
pressure values in a different color.
Tire Pressure Monitoring System Low Pressure Warning
Should this occur, you should stop as soon as
possible and inflate the tires with low pressure
(those in a different color in the instrument cluster
graphic) to the vehicle’s recommended cold
placard pressure value as shown in the "Inflate to
XX" message. Once the system receives the
updated tire pressures, the system will
automatically update, the pressure values in the
graphic display in the instrument cluster will return
to their original color, and the Tire Pressure
Monitoring System Light will turn off.
NOTE:
When filling warm tires, the tire pressure may need
to be i
ncreased up to an additional 4 psi (28 kPa)
above the recommended cold placard pressure in
order to turn the Tire Pressure Monitoring System
Light off.
The vehicle may need to be driven for up to
20
minu
tes above 15 mph (24 km/h) in order for
t
h
e
T
P
MS to receive this information.
SERVICE TPMS WARNING
When a system fault is detected, the Tire Pressure
Monitoring System Light will flash on and off for
75 seconds and then remain on solid. The system
f
ault will also sound a chime. In addition, the
instrument cluster will 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 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
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