FORD 2009 Focus v.1 - Manual (Page 157)

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 still flashes, 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 tires are flat, repair as necessary.) Check 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.
2009 Focus (foc)
Owners Guide, 1st Printing
USA (fus)
Tires, Wheels and Loading
157