User Manual - Page 102

For 2018 GRAND CHEROKEE SRT.

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NOTE:
Your system can be set to display pressure
units in PSI, BAR or kPa.
Should a low tire condition occur on any of
the four active road tire(s), you should stop as
soon as possible, and inflate the low tire(s)
that is in a different color on the graphic
display to the vehicle’s recommended cold
tire pressure displayed in the “Inflate to XX”
message.
NOTE:
When filling warm tires, the tire pressure may
need to be increased up to an additional 4 psi
(28 kPa) above the recommended cold plac-
ard pressure in order to turn the TPMS Warn-
ing Light off.
The system will automatically update, the
graphic display of the pressure value(s) will
return to its original color and the TPMS
Warning Light will extinguish once the up-
dated tire pressure(s) have been received.
The vehicle may need to be driven for up to
20 minutes above 15 mph (24 km/h) to
receive this information.
Service TPM System Warning
The Tire Pressure Monitoring System Warning
Light will flash on and off for 75 seconds, and
remain on solid when a system fault is de-
tected. The system fault will also sound a
chime. The instrument cluster display will
display a “SERVICE TPM SYSTEM” message
for a minimum of five seconds. This message
is then followed by a graphic display, with “-
-“ in place of the pressure value(s), indicat-
ing which Tire Pressure Monitoring Sensor(s)
is not being received.
If the ignition switch 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, the "SERVICE TPM
SYSTEM" message will not be present, and a
pressure value will be displayed instead of
dashes. A system fault can occur by any of
the following:
Jamming due to electronic devices or driv-
ing next to facilities emitting the same
Radio Frequencies as the TPM 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 TPM
sensors.
Low Tire Pressure Monitor Display
SAFETY
100
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