Ford Fiesta Tire Pressure Warning Light Stays On

Common Causes for the Tire Pressure Warning Light in Your Ford Fiesta and How to Resolve It

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Reviewed by
Andrew Hajjar
Written by RepairPal Car Genius
Updated January 14, 2025
0%
40% chance it's the
Tire Leaking Air
0%
30% chance it's the
Wheel Leaking Air
0%
15% chance it's the
Tire Pressure Monitoring System
0%
15% chance it's
Something else
The most common reasons a Ford Fiesta tire pressure warning light stays on are a leaking tire, a wheel that no longer holds air, or a faulty tire pressure monitoring system.
  • Tire Leaking Air: A puncture, valve stem issue, or rim damage can cause a tire to leak air, leading to loss of pressure.
  • Wheel Leaking Air: A puncture or damage to the tire or rim can cause air to leak, resulting in a loss of tire pressure.
  • Tire Pressure Monitoring System: A malfunctioning tire pressure monitoring system can be caused by faulty sensors or a dead battery in the sensor units.
Proper diagnosis will determine the exact cause of your symptom, saving you money on unnecessary repairs. The diagnostic experts at RepairPal Certified shops have the right tools and experience to solve any symptom.

How much does it cost to fix a Ford Fiesta tire pressure warning light stays on?

Common Repairs

The total repair cost will vary based on the condition of your vehicle and the number of repairs needed to fix your symptom. Proper diagnosis will save you money by finding the exact repairs needed to fix your car right the first time.

When a tire pressure monitoring sensor fails, the tire pressure monitoring system control module will recognize a loss in communication and turn on the warning lamp which indicates the failure. This is most often the case. However, the tire pressure monitoring sensor may also fail by reporting incorrect tire pressures. This could cause a flat tire to go unrecognized, or a properly inflated tire to signal a low or high tire pressure warning.

When a relearn is needed, for any reason, the TPMS warning light will illuminate, and many vehicles will display a message relating to the TPMS system being inoperative or loosing communication. It is important to keep a watchful eye on tire pressures when this system is having issues because there is no warning available for underinflation or overinflation of the tires.

Wheels offer very few symptoms, but these symptoms should never be ignored. Visible cracks on the wheels may appear, especially after hitting a large bump, Most often, this will also be accompanied by loss of air from the tire on that wheel. Also, vibration in the steering wheel is very common when the tire is out of balance, and improper wheel nuts or bolts can cause creaking and popping noises to develop. Again, there are very few symptoms, but they should not be ignored.

The only symptoms requiring diagnosis for the tire pressure monitoring system warning lamp is if the warning lamp has illuminated while the tires have correct air pressure, or if the air pressure for the tires is out of specification and the warning lamp is off. This is because the overwhelming majority of cases where the TPMS lamp illuminates is due to the change in ambient temperature.

Troubleshooting Tire Pressure Warning Light in a Ford Fiesta

When faced with the tire pressure warning light in your Ford Fiesta, the first step is to check the tire pressure across all four tires. This simple action can often resolve the issue, as under-inflated tires are a common trigger for the warning light. If the pressure is correct, the next step is to reset the Tire Pressure Monitoring System (TPMS). This involves inflating the tires to the recommended pressure, turning the ignition to the "on" position, and pressing the TPMS reset button until the light blinks off. If the light persists, it may indicate a more complex problem, such as a faulty tire pressure sensor or a malfunctioning TPMS receiver module. In this case, inspecting the sensors for damage or battery depletion is crucial. Utilizing online resources, such as video tutorials or step-by-step guides specific to your model year, can provide additional clarity and support throughout the troubleshooting process. Understanding that the TPMS light serves as a critical alert for tire safety will help you prioritize addressing the issue promptly, ensuring a safer driving experience.

Troubleshooting Tire Pressure Warning Light in a Ford Fiesta

When dealing with the tire pressure warning light in your Ford Fiesta, it's essential to understand the common problems that could be causing the alert. One frequent issue is low tire pressure, which can easily be resolved by checking and inflating your tires to the manufacturer's recommended levels. Another common problem is a malfunctioning tire pressure monitoring system (TPMS) sensor, which may require inspection for damage or battery replacement. Additionally, the TPMS receiver module can sometimes fail, leading to false warnings. If you've recently changed tires or had maintenance done, ensure that the sensors were properly reinstalled and calibrated. Lastly, environmental factors such as extreme temperatures can affect tire pressure readings, so it's wise to monitor your tire pressure regularly, especially during seasonal changes. By being aware of these common issues, you can effectively troubleshoot and resolve the tire pressure warning light in your Ford Fiesta, ensuring a safer driving experience.

Why is the Tire Pressure Warning Light Staying On in a Ford Fiesta?

When the tire pressure warning light remains illuminated in your Ford Fiesta, it is crucial to address the issue without delay. Ignoring this warning can lead to serious safety risks, such as reduced traction, increased tire wear, and even tire blowouts, which can compromise your control of the vehicle. Additionally, driving with improperly inflated tires can negatively impact fuel efficiency and lead to costly repairs down the line. The warning light may indicate a simple issue, like low tire pressure, or a more complex problem, such as a malfunctioning tire pressure monitoring system (TPMS). Therefore, it is essential to regularly check your tire pressure, inspect for leaks, and ensure that all sensors are functioning correctly. If the light persists after taking these steps, seeking professional assistance is advisable to prevent further complications and ensure your safety on the road.

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