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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:
Low tire
pressure
warning lightPossible cause Customer action required
Solid warning
lightTire(s)
under-inflated1. Make sure tires are at the proper
pressure. SeeInflating Your Tires
in this chapter.
2.
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.
Spare tire in use Repair the damaged road wheel
and tire and reinstall it on the
vehicle to restore system function.
For a description on how the
system functions, seeWhen Your
Temporary Spare Tire is Installed
in this section.
TPMS
malfunctionIf 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.
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2014 MKT(mkt)
Owners Guide gf, 1st Printing, April 2013
USA(fus)
Page 349 of 498

Low tire
pressure
warning lightPossible cause Customer action required
Flashing
warning lightSpare tire in use 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, seeWhen
Your Temporary Spare Tire is
Installedin this section.
TPMS
malfunctionIf 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.
When Inflating Your Tires
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.
How Temperature Affects Your Tire Pressure
The tire pressure monitoring system monitors tire pressure in each
pneumatic tire. While driving in a normal manner, a typical passenger
tire inflation pressure may increase about 2 to 4 psi (14 to 28 kPa) from
a cold start situation. If the vehicle is stationary overnight with the
outside temperature significantly lower than the daytime temperature,
the tire pressure may decrease approximately 3 psi (21 kPa) for a drop
of 30°F (17°C) in ambient temperature. This lower pressure value may
be detected by the tire pressure monitoring system as being significantly
lower than the recommended inflation pressure and activate the system
warning light for low tire pressure. If the low tire pressure warning light
is on, visually check each tire to verify that no tire is flat. If one or more
tires are flat, repair as necessary. Check the air pressure in the road
tires. If any tire is under-inflated, carefully drive the vehicle to the
nearest location where air can be added to the tires. Inflate all the tires
to the recommended inflation pressure.
348Wheels and Tires
2014 MKT(mkt)
Owners Guide gf, 1st Printing, April 2013
USA(fus)
Page 355 of 498

6. Remove the wheel cover (if equipped) with the lug wrench tip and
loosen each wheel lug nut one-half turn counterclockwise, but do not
remove them until the wheel is raised off the ground.
7. The vehicle jacking points are
shown here, and are depicted on the
yellow warning label on the jack.
Note:Jack at the specific locations
to avoid damage to the vehicle.
8. Put the jack in the jack notch next to the
tire you are changing. Turn the jack handle
clockwise until the wheel is completely off
the ground.
9. Remove the lug nuts with the lug
wrench.
10. Replace the flat tire with the spare tire, making sure the valve stem
is facing outward. Reinstall the lug nuts until the wheel is snug against
the hub. Do not fully tighten the lug nuts until the wheel has been
lowered.
11. Lower the wheel by turning the jack handle counterclockwise.
12. Remove the jack and fully tighten the
lug nuts in the order shown. SeeWheel Lug
Nut Torque Specificationslater in this
chapter for the proper lug nut torque
specification.
13. Install the wheel cover.
354Wheels and Tires
2014 MKT(mkt)
Owners Guide gf, 1st Printing, April 2013
USA(fus)