User Manual - Page 103

For 2018 GRAND CHEROKEE SRT.

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NOTE:
There is no tire pressure monitoring sensor in
the spare tire. The TPMS will not be able to
monitor the tire pressure. 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 switch cycle, the
Tire Pressure Monitoring System Warning
Light will remain on, a chime will sound, and
the instrument cluster display will still dis-
play a pressure value in the different color
graphic display and an “Inflate to XX” mes-
sage will be displayed. After driving the ve-
hicle for up to 20 minutes above 15 mph
(24 km/h), the Tire Pressure Monitoring Sys-
tem Warning Light will flash on and off for
75 seconds and then remain on solid. In
addition, the instrument cluster display will
display a “SERVICE TPM SYSTEM" message
for five seconds and then display dashes (- -)
in place of the pressure value. For each
subsequent ignition switch cycle, a chime
will sound, the Tire Pressure Monitoring Sys-
tem Warning Light will flash on and off for
75 seconds and then remain on solid, and the
instrument cluster display will display a
"SERVICE TPM SYSTEM" message for five
seconds and then display dashes (- -) in place
of the pressure value. Once you repair or
replace the original road tire, and reinstall it
on the vehicle in place of the spare tire, the
TPMS will update automatically.
In addition, the Tire Pressure Monitoring Sys-
tem Warning Light will turn off and the
graphic in the instrument cluster display will
display a new pressure value instead of
dashes (- -), as long as no tire pressure is
below the low-pressure warning limit in any of
the four active road tires. The vehicle may
need to be driven for up to 20 minutes above
15 mph (24 km/h) in order for the TPMS to
receive this information.
TPMS Deactivation If Equipped
The Tire Pressure Monitoring System (TPMS)
can be deactivated if replacing all four wheel
and tire assemblies (road tires) with wheel
and tire assemblies that do not have TPMS
Sensors, such as when installing winter
wheel and tire assemblies on your vehicle.
To deactivate the TPMS, first, replace all four
wheel and tire assemblies (road tires) with
tires not equipped with Tire Pressure Moni-
toring (TPM) Sensors. Then, drive the vehicle
for 20 minutes above 15 mph (24 km/h). The
TPMS will chime, the TPMS Warning Light
will flash on and off for 75 seconds and then
remain on. The instrument cluster will dis-
play the “SERVICE TPM SYSTEM” message
and then display dashes (--) in place of the
pressure values.
Beginning with the next ignition cycle, the
TPMS will no longer chime or display the
“SERVICE TPM SYSTEM” message in the
instrument cluster but dashes (--) will remain
in place of the pressure values.
To reactivate the TPMS, replace all four
wheel and tire assemblies (road tires) with
tires equipped with TPM sensors. Then, drive
the vehicle for up to 20 minutes above
15 mph (24 km/h). The TPMS will chime, the
TPMS Warning Light will flash on and off for
75 seconds and then turn off. The instrument
cluster will display the “SERVICE TPM SYS-
TEM” message and then display pressure
values in place of the dashes. On the next
ignition cycle the "SERVICE TPM SYSTEM"
message will no longer be displayed as long
as no system fault exists.
101
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