Jeep 2015 Grand Cherokee - Owner Manual - Manual (Page 523)

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.
The DID will also display a ЉSERVICE TPM SYSTEMЉ
message for a minimum of five seconds when a system
fault is detected possibly related to an incorrect sensor
location fault. In this case, the ЉSERVICE TPM SYSTEMЉ
message is then followed by a graphic display, with
pressure values still shown. This indicates the pressure
values are still being received from the TPM Sensors but
they may not be located in the correct vehicle position.
However, the system still needs to be serviced as long as
the ЉSERVICE TPM SYSTEMЉ message exists.
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 Telltale Light will remain ON, a chime will
sound, and the DID will still display a pressure value in
the different color graphic display and an ЉInflate to XXX
kPaЉ message will be displayed. 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, the
DID will display a “SERVICE TPM SYSTEMЉ 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
Telltale Light will flash on and off for 75 seconds and then
remain on solid, and the DID will display a ЉSERVICE
TPM SYSTEMЉ message for five seconds and then dis-
play 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.
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