When inflating your tires, How temperature affects your tire pressure, Tires, wheels and loading – FORD 2007 Edge v.1 User Manual

Page 195

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Low Tire
Pressure
Warning Light

Possible cause

Customer Action Required

Flashing Warning
Light

Spare tire in use

Your temporary spare tire is in
use. Repair the damaged road
wheel and re-mount it on the
vehicle to restore system
functionality. For a description of
how the system functions under
these conditions, refer to When
your temporary spare tire is
installed
in this section.

TPMS
malfunction

If your tires are properly inflated
and your spare tire is not in use
and the TPMS warning light is
still ON, have the system
inspected by your authorized
dealer.

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 (TPMS) monitors tire pressure in
each pneumatic tire. While driving in a normal manner, a typical
passenger tire inflation pressure may increase approximately 2 to 4 psi
(14 to 28 kPa) from a cold start situation. If the vehicle is stationary
over night with the outside temperature significantly lower than the
daytime temperature, the tire pressure may decrease approximately 3 psi
(20.7 kPa) for a drop of 30° F (16.6°C) in ambient temperature. This
lower pressure value may be detected by the TPMS as being significantly
lower than the recommended inflation pressure and activate the TPMS
warning 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

2007 Edge (edg)
Owners Guide (post-2002-fmt)
USA
(fus)

Tires, Wheels and Loading

195

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