Ford Mustang (2018 year). Manual — part 68

The tires on your vehicle may have
all-weather treads to provide traction in
rain and snow. However, in some climates,
you may need to use snow tires and chains.
Use chains on the tires only in an
emergency or if the law requires them.

Note: The suspension insulation and
bumpers will help prevent vehicle damage.
Do not remove these components from your
vehicle when using snow tires and chains.

Follow these guidelines when using snow
tires and chains:

•

If possible, avoid fully loading your
vehicle.

•

Chains may damage aluminum wheels.

•

Use ultra low profile cables, 10 mm or
less in dimension as measured on the
sidewall of your tire, with 235/55R 17,
235/50R18 and 255/40R19 on the rear
axle only.

•

Do not use snow chains or cables with
275/40R19 and 265/35R20 tires.

•

Not all S-class snow chains or cables
meet these restrictions. Chains of this
size restriction will include a tensioning
device.

•

Purchase chains or cables from a
manufacturer that clearly labels body
to tire dimension restrictions. The snow
chains or cables must be mounted in
pairs on the front or the rear tires only.

•

Do not exceed 30 mph (50 km/h) if
recommended by the chain
manufacturer while using snow chains.

•

Install cables securely, verifying that
the cables do not touch any wiring,
brake lines or fuel lines.

•

Drive cautiously. If you hear the cables
rub or bang against the vehicle, stop
and retighten them. If this does not
work, remove the cables to prevent
vehicle damage.

•

Remove the tire chains when they are
no longer needed. Do not use tire
chains on dry roads.

If you have any questions regarding snow
chains or cables, please contact your
authorized dealer.

TIRE PRESSURE MONITORING
SYSTEM

WARNING

The tire pressure monitoring system
is not a substitute for manually
checking tire pressures. You should

periodically check tire pressures using a
pressure gauge. Failure to correctly
maintain tire pressures could increase the
risk of tire failure, loss of control, vehicle
rollover and personal injury.

Note: You should only use tire sealants in
roadside emergencies as they may cause
damage to the tire pressure monitoring
system sensor.

Note: If the tire pressure monitoring system
sensor becomes damaged, it may not
function.

Each tire, including the spare (if
provided), should be checked
monthly when cold and inflated

to the inflation pressure recommended by
the vehicle manufacturer on the vehicle
placard or tire inflation pressure label. (If
your vehicle has tires of a different size
than the size indicated on the vehicle
placard or tire inflation pressure label, you
should determine the proper tire inflation
pressure for those tires).

As an added safety feature, your vehicle
has been equipped with a Tire Pressure
Monitoring System (TPMS) that
illuminates a low tire pressure telltale
when one or more of your tires is
significantly under-inflated. Accordingly,
when the low tire pressure telltale
illuminates, you should stop and check
your tires as soon as possible, and inflate
them to the proper pressure. Driving on a
significantly under-inflated tire causes the
tire to overheat and can lead to tire failure.
Under-inflation also reduces fuel efficiency
and tire tread life, and may affect the
vehicle’s handling and stopping ability.

Please note that the TPMS is not a
substitute for proper tire maintenance, and
it is the driver’s responsibility to maintain
correct tire pressure, even if under-inflation
has not reached the level to trigger
illumination of the TPMS low tire pressure
telltale.

Your vehicle has also been equipped with
a TPMS malfunction indicator to indicate
when the system is not operating properly.
The TPMS malfunction indicator is
combined with the low tire pressure
telltale. When the system detects a
malfunction, the telltale will flash for
approximately one minute and then remain
continuously illuminated. This sequence
will continue upon subsequent vehicle
start-ups as long as the malfunction exists.

When the malfunction indicator is
illuminated, the system may not be able
to detect or signal low tire pressure as
intended. TPMS malfunctions may occur
for a variety of reasons, including the
installation of replacement or alternate
tires or wheels on the vehicle that prevent
the TPMS from functioning properly.
Always check the TPMS malfunction
telltale after replacing one or more tires or
wheels on your vehicle to ensure that the
replacement or alternate tires and wheels
allow the TPMS to continue to function
properly.

This device complies with Part 15 of the
FCC Rules and with License exempt RSS
Standards of Industry Canada. Operation
is subject to the following two conditions:

1.

This device may not cause harmful
interference, and

2. This device must accept any

interference received, including
interference that may cause undesired
operation.

Note: Changes or modifications not
expressively approved by the party
responsible for compliance could void the
user's authority to operate the equipment.
The term "IC:" before the radio certification
number only signifies that Industry Canada
technical specifications were met.

Changing Tires With a Tire
Pressure Monitoring System

E142549

Note: Each road tire is equipped with a tire
pressure sensor located inside the wheel
and tire assembly cavity. The pressure
sensor is attached to the valve stem. The
pressure sensor is covered by the tire and is
not visible unless the tire is removed. Take
care when changing the tire to avoid
damaging the sensor.

You should always have your tires serviced
by an authorized dealer.

Check the tire pressure periodically (at
least monthly) using an accurate tire
gauge. See When Inflating Your Tires in
this chapter.

Understanding Your Tire Pressure
Monitoring System

E250820

The tire pressure monitoring system
measures pressure in your road tires and
sends the tire pressure readings to your
vehicle. You can view the tire pressure
readings through the information display.
See General Information (page 88). The
low tire pressure warning light will turn on
if the tire pressure is significantly low. Once

the light is illuminated, your tires are
under-inflated and need to be inflated to
the manufacturer’s recommended tire
pressure. Even if the light turns on and a
short time later turns off, your tire pressure
still needs to be checked.

When Your Temporary Spare Tire is
Installed

When one of your road tires needs to be
replaced with the temporary spare, the
system will continue to identify an issue to
remind you that the damaged road wheel
and tire assembly needs to be repaired and
put back on your vehicle.

To restore the full function of the tire
pressure monitoring system, have the
damaged road wheel and tire assembly
repaired and remounted on your vehicle.

When You Believe Your System is Not
Operating Properly

The main function of the tire pressure
monitoring system is to warn you when
your tires need air. It can also warn you in
the event the system is no longer capable
of functioning as intended. See the
following chart for information concerning
your tire pressure monitoring system:

Customer action required

Possible cause

Low tire pressure

warning light

Make sure tires are at the proper pres-
sure. See Inflating your tires in this
chapter. After inflating your tires to the
manufacturer’s recommended pressure
as shown on the Tire Label (located on
the edge of driver’s door or the B-Pillar),
the vehicle must be driven for at least
two minutes over 20 mph (32 km/h)
before the light turns off.

Tire(s) under-inflated

Solid warning light

Repair the damaged road wheel and tire
assembly and reinstall it on the vehicle
to restore system function. For a
description on how the system functions,
see When Your Temporary Spare Tire
is Installed in this section.

Spare tire in use

If the tires are properly inflated and the
spare tire is not in use but the light
remains on, contact your authorized
dealer as soon as possible.

TPMS malfunction

Repair the damaged road wheel and tire
assembly and reinstall it on the vehicle
to restore system function. For a
description on how the system functions,
see When Your Temporary Spare Tire
is Installed in this section.

Spare tire in use

Flashing warning

light

If the tires are properly inflated and the
spare tire is not in use but the light
remains on, contact your authorized
dealer as soon as possible.

TPMS malfunction

When Inflating Your Tires

WARNING

Do not use the tire pressure
displayed in the information display
as a tire pressure gauge. Failure to

follow this instruction could result in
personal injury or death.

When putting air into your tires (such as at
a gas station or in your garage), the tire
pressure monitoring system may not
respond immediately to the air added to
your tires.

It may take up to two minutes of driving
over 20 mph (32 km/h) for the light to turn
off after you have filled your tires to the
recommended inflation pressure.