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Ford fiesta st tyre pressure



As an important safety feature, your vehicle’s tire pressure monitoring system (TPMS) will illuminate a warning light if one of your road tires is significantly under-inflated. This video explains how the system works. If you notice the TPMS warning light, you should manually check your tire pressure with a tire gauge and inflate your tires to the correct pressure if necessary.

The tire pressure monitoring system is not a substitute for manually checking your tire pressure. For more precise measurements, use a tire gauge to check your tire pressure at least once a month. Failure to properly maintain tire pressure can increase the risk of tire failure, loss of control, vehicle rollover and personal injury. Also see “Inflating Your Tires” in this chapter.

The tire pressure monitoring system (TPMS) illuminates a low tire pressure warning light when one or more of your road tires are significantly under-inflated. However, TPMS is not a substitute for proper tire maintenance, and it is the driver’s responsibility to maintain correct tire pressure. It is possible for your tires to be partially under-inflated even if they are not so severely under-inflated that they trigger the TPMS warning light.

If the TPMS warning light is illuminated, you should stop driving as soon as possible to check your tire pressure and inflate your tires to the correct pressure. Even if the TPMS light turns on and then turns off a short time later, your tires still need to be checked. Driving on a significantly under-inflated tire causes the tire to overheat and can lead to tire failure. Under-inflation also reduces fuel efficiency and tire tread life, and may affect the vehicle’s handling and stopping ability.

Every month, it’s important to check the tire pressure in all four of your tires, as well as the spare tire, if your vehicle has one. Since tire pressure varies with temperature, be sure to check your tires after your vehicle has been parked for at least three hours, when the tires are cold.

All tires should be inflated to the pressure recommended on the vehicle placard or tire inflation pressure label. If your vehicle has tires of a different size than the measurements indicated on the placard or inflation pressure label, consult other sources to determine the proper inflation pressure.

When the TPMS is not operating properly, the TPMS warning light will flash for about one minute and then remain continuously illuminated. As long as the system malfunction exists, the blinking sequence will repeat at vehicle start-up to indicate that the TPMS is not working properly.

When the malfunction indicator is active, the system may not be able to detect or signal low tire pressure. TPMS malfunctions can occur for a variety of reasons, including replacement tires or wheels that prevent the TPMS from functioning properly. Always check for the TPMS malfunction indicator after replacing any of the tires or wheels on your vehicle.

Note: The tire pressure monitoring system complies with part 15 of the FCC rules and with RSS-210 of Industry Canada. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) This device must accept any interference received, including interference that may cause undesired operation.

Changing Tires With a Tire Pressure Monitoring System

You should always have your tires serviced by an authorized dealer.

Each road tire is equipped with a tire pressure sensor, which is located inside the wheel and tire assembly cavity. Since the sensor is attached to the valve stem, it is covered by the tire and not visible unless the tire is removed. When changing any of your tires, take care to avoid damaging the sensor.

If you have replaced one of your road tires with a temporary spare, the TPMS will continue to identify a tire pressure issue as a reminder to replace the temporary spare. The TPMS will resume normal function once you have the damaged road wheel and tire assembly repaired and remounted to your vehicle.

Make sure tires are at the proper pressure. See “Inflating Your Tires” in this chapter. 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.

If the spare tire is in use, this light will illuminate.

Repair the damaged road wheel and tire assembly and reinstall it on the vehicle to restore normal system function. For a description of how the system functions with a spare tire in use, see “When Your Temporary Spare Tire Is Installed” in this section.

If the light remains on even though the tires are properly inflated and the spare tire is not in use, contact your authorized dealer as soon as possible.

If the spare tire is in use, this light will illuminate.

Repair the damaged road wheel and tire assembly and reinstall it on the vehicle to restore normal system function. For a description on how the system functions with a spare tire in use, see “When Your Temporary Spare Tire Is Installed” in this section.

If the light remains on even though the tires are properly inflated and the spare tire is not in use, contact your authorized dealer as soon as possible.