How Temperature Affects Your TirePressure
The tire pressure monitoring systemmonitors tire pressure in each pneumatictire. While driving in a normal manner, atypical passenger tire inflation pressuremay increase about 2 to 4 psi (14 to 28kPa) from a cold start situation. If thevehicle is stationary overnight with theoutside temperature significantly lowerthan the daytime temperature, the tirepressure may decrease about 3 psi (21kPa) for a drop of 30°F (17°C) in ambienttemperature. This lower pressure valuemay be detected by the tire pressuremonitoring system as being significantlylower than the recommended inflationpressure and activate the system warninglight for low tire pressure. If the low tirepressure warning light is on, visually checkeach tire to verify that no tire is flat. If oneor more tires are flat, repair as necessary.Check the air pressure in the road tires. Ifany tire is under-inflated, carefully drivethe vehicle to the nearest location whereair can be added to the tires. Inflate all thetires to the recommended inflationpressure.
CHANGING A ROAD WHEEL
WARNINGS
The use of tire sealants may damageyour tire pressure monitoring systemand should not be used. However, ifyou must use a sealant, the tire pressuremonitoring system sensor and valve stemon the wheel must be replaced by anauthorized dealer.
If the tire pressure monitor sensorbecomes damaged, it will no longerfunction. See Tire PressureMonitoring System (page 279).
Note:The tire pressure monitoring systemindicator light will illuminate when the sparetire is in use. To restore the full function ofthe monitoring system, all road wheelsequipped with tire pressure monitoringsensors must be mounted on the vehicle.
If you get a flat tire while driving, do notapply the brake heavily. Instead, graduallydecrease your speed. Hold the steeringwheel firmly and slowly move to a safeplace on the side of the road.
Have a flat serviced by an authorizeddealer in order to prevent damage to thetire pressure monitoring system sensors.See Tire Pressure Monitoring System(page 279). Replace the spare tire with aroad tire as soon as possible. Duringrepairing or replacing of the flat tire, havean authorized dealer inspect the tirepressure monitoring system sensor fordamage.
Dissimilar Spare Wheel and TireAssembly Information
WARNING
Failure to follow these guidelinescould result in an increased risk ofloss of vehicle control, injury or death.
If you have a dissimilar spare wheel andtire, then it is intended for temporary useonly. This means that if you need to use it,you should replace it as soon as possiblewith a road wheel and tire assembly thatis the same size and type as the road tiresand wheels that were originally providedby Ford. If the dissimilar spare tire or wheelis damaged, it should be replaced ratherthan repaired.
A dissimilar spare wheel and tire assemblyis defined as a spare wheel and tireassembly that is different in brand, size orappearance from the road tires and wheelsand can be one of three types:
282Fusion (CC7) , enUSAWheels and Tires
