Occupant Restraint Systems; Occupant Restraint Systems Features - Jeep GRAND CHEROKEE 2023 Owner's Manual

Selectable Tire Fill Alert (STFA) —
If Equipped
The Selectable Tire Fill Alert (STFA) system is an optional
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, which 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
≥15 psi to XX 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 each 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 deflating one
tire at a time. The user is required to wait until the hazard
lights STOP flashing or 26-30 seconds after the desired
pressure is achieved in one wheel before switching to
another.
The system will be activated when the TPMS receiver
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 pressure
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 System sensor may
be in an inoperative position, preventing the TPMS 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 inflated/
deflated. The horn will chirp under the following STFA
states:
1. The horn will chirp once when the selected pressure
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
over-inflated or over-deflated.
3. The horn will chirp once again when enough air is
added or removed to reach proper selected pressure
level.

OCCUPANT RESTRAINT SYSTEMS

Some of the most important safety features in your vehicle
are the restraint systems:
O R S
CCUPANT ESTRAINT YSTEMS
F
EATURES
 Seat Belt Systems
 Supplemental Restraint Systems (SRS) Air Bags
 Child Restraints
Some of the safety features described in this section may
be standard equipment on some models, or may be
optional equipment on others. If you are not sure, ask an
authorized dealer.
SAFETY 245