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152 SAFETY
The horn will also chirp three times if the tire
is then under-inflated and will continue to
chirp every five seconds if the user continues
to deflate the tire.
Selectable Tire Fill Alert — If Equipped
The Selectable Tire Fill Alert (STFA) system is an
opt
ional feature that is included as part of the
normal Tire Fill Alert system. The system is
designed to allow you to select a pressure to
inflate or deflate the vehicle's front and rear
axle tires to, and to provide feedback while
inflating or deflating the vehicle's tires.
In the Selectable Tire Fill Alert application,
whi
ch is located in the apps menu of the
Uconnect System, you will be able to select a
pressure setting for both the front and rear axle
tire pressures by scrolling through a pressure
range from XX to 15 psi in 1 psi increments for
each axle setting.
XX = the vehicle's cold placard pressure values
for
the front and rear axles as shown on the
vehicle placard pressure label.
You may also store pressure values chosen for
eac
h axle in the Uconnect System application
as preset pressure values. Up to two sets of
preset pressure values can be stored in the
Uconnect System for the front and rear axle.
Once you select the tire pressures for the front
and rear axles that you want to inflate or deflate
to, you can begin inflating or deflating one tire at
a time.
NOTE:
The STFA system will only support inflating or
def
lating one tire at a time.
The system will be activated when the TPM
rec
eiver module detects a change in tire
pressure. The ignition must be in the ON/RUN
mode, with the transmission in PARK in vehicles
with an automatic transmission, and in
NEUTRAL with the parking brake engaged in
vehicles with a manual transmission. The
hazard lamps will come on to confirm the
vehicle is in Tire Fill Alert mode.
When Tire Fill Alert Mode is entered, the tire
pre
ssure screen will be displayed in the
instrument cluster. If the hazard lamps do not
come on while inflating or deflating the tire, the
Tire Pressure Monitoring (TPM) sensor may be
in an inoperative position, preventing the TPM
sensor signal from being received. In this case,
the vehicle may need to be moved slightly
forward or backward.
Horn chirps will indicate STFA status as tires are
inf
lated/deflated. The horn will chirp under the
following STFA states:
1. The horn will chirp once when the selected
pr
essure is reached to let you know when
to stop inflating or deflating the tire.
2. The horn will chirp three times if the tire is
ov
er-inflated or over-deflated.
3. The horn will chirp once again when enough
ai
r is added or removed to reach proper
selected pressure level.
TPMS Deactivation — If Equipped
The TPMS can be deactivated if replacing all
fou
r 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
whe
el and tire assemblies (road tires) with tires
not equipped with Tire Pressure Monitoring
(TPM) Sensors. Then, drive the vehicle for
20
minutes above 15 mph (24 km/h). The
TPM
S will chime, the TPMS Warning Light will
flash on and off for 75 seconds and then remain
on. The instrument cluster will display the
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