The Tire Pressure Monitoring Telltale Light will
flash on and off for 75 seconds, and remain on
solid when a system fault is detected. In addi-
tion, a “SERVICE TPM SYSTEM” message
may be displayed for approximately 5 seconds
when a system fault is detected, and a chime
will sound. If the ignition switch is cycled, this
sequence will repeat, providing the system fault
still exists. The Tire Pressure Monitoring Telltale
Light will turn off when the fault condition no
longer exists. A system fault can occur by any of
the following:
1. Jamming due to electronic devices or driving
next to facilities emitting the same Radio Fre-
quencies as the TPM sensors.
2. Installing some form of aftermarket window
tinting that affects radio wave signals.
3. Lots of snow or ice around the wheels or
wheel housings.
4. Using tire chains on the vehicle.
5. Using wheels/tires not equipped with TPM
sensors.
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, a
chime will sound, a “LOW TIRE PRESSURE”
message will be displayed in the instrument
cluster for a minimum of five seconds, an
ⴖ
Inflate to XXX
ⴖ
message will be displayed and
the Tire Pressure Monitoring Telltale Light will
turn ON. After driving the vehicle for up to 20
minutes above 15 mph (24 km/h), the Tire
Pressure Monitoring Telltale Light will flash on
and off for 75 seconds and then remain on
solid. In addition, a “SERVICE TPM SYSTEM”
message will be displayed for a minimum of
five seconds. For each subsequent ignition
switch cycle, a chime will sound, a “SERVICE
TPM SYSTEM” message will be displayed for
a minimum of five seconds, and the Tire Pres-
sure Monitoring Telltale Light will flash on and
off for 75 seconds and then remain on solid.
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 automati-
cally and the Tire Pressure Monitoring Telltale
Light will turn OFF, 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.
Premium System – If Equipped
The Tire Pressure Monitor System (TPMS)
uses wireless technology with wheel rim-
mounted electronic sensors to monitor tire pres-
sure 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 regu-
larly check the tire pressure in all of your
tires and to maintain the proper pressure.
269
Summary of Contents for 2013 Grand Cherokee
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Page 187: ...Compass Variance Map 183...
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