2017-Fiesta-Owners Manual

Wheels and Tires

HowTemperature 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 2–4 psi (14–28 kPa) from a cold start situation. If the vehicle is stationary overnight with the outside temperature significantly lower than the daytime temperature, the tirepressuremay decrease about 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. CHANGING A ROADWHEEL WARNINGS The use of tire sealantsmay damage your tire pressuremonitoring system and should only be used in roadside emergencies. If youmust use a sealant, the Ford Tire Mobility Kit sealant should be used. The tire pressure monitoring system sensor and valve stem on the wheel must be replaced by an authorized dealer after use of the sealant.

Note: The tire pressure monitoring system indicator light will illuminatewhen the spare tire is in use. To restore the full functionality of the monitoring system, all road wheels equipped with tire pressure monitoring sensors must be mounted on the vehicle. If you get a flat tire while driving, do not apply the brake heavily. Instead, gradually decrease your speed. Hold the steering wheel firmly and slowly move to a safe place on the side of the road. Have a flat serviced by an authorized dealer in order to prevent damage to the tire pressure monitoring system sensors. See Tire PressureMonitoring System (page 234). Replace the spare tire with a road tire as soon as possible. During repairing or replacing of the flat tire, have an authorized dealer inspect the tire pressure monitoring system sensor for damage. Dissimilar SpareWheel and Tire Assembly Information WARNING Failure to follow these guidelines could result in an increased risk of loss of vehicle control, injury or death. If you have a dissimilar spare wheel and tire, then it is intended for temporary use only. This means that if you need to use it, you should replace it as soon as possible with a road wheel and tire assembly that is the same size and type as the road tires and wheels that were originally provided by Ford. If the dissimilar spare tire or wheel is damaged, it should be replaced rather than repaired. Adissimilar sparewheel and tire assembly is defined as a spare wheel and tire assembly that is different in brand, size or appearance fromthe road tires andwheels and can be one of three types:

See Tire PressureMonitoring System (page 234). If the tire pressure monitor sensor becomes

damaged, it will no longer function.

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Fiesta(CCT)Canada/UnitedStatesofAmerica,HE8J 19A321AAenUSA,Editiondate:201607,FirstPrinting