2015 Ford Fiesta Tire Pressure Warning Light Stays On

Resolve Persistent Tire Pressure Warning Light in 2015 Ford Fiesta

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Reviewed by
Bo Fader
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 2015 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 2015 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.

What steps should I take to diagnose the tire pressure warning light issue in my 2015 Ford Fiesta?

To effectively diagnose the tire pressure warning light issue in your 2015 Ford Fiesta, begin with a straightforward approach that prioritizes simpler solutions before delving into more complex diagnostics. Start by checking the tire pressure in all four tires using a reliable tire pressure gauge, ensuring they are inflated to the levels recommended in your vehicle's manual. This initial step can often resolve the warning light if the pressure is simply low. Next, inspect the tires for any visible damage, such as punctures or bulges, which could indicate a more serious problem. If the tires appear to be in good condition, proceed to reset the tire pressure monitoring system according to the instructions in your owner's manual, as this can sometimes clear false alerts. Additionally, examine the valve stems for any signs of leaks or damage, as faulty valve stems can interfere with the monitoring system. If, after these steps, the warning light remains illuminated, it may be time to consult a mechanic for a comprehensive inspection, ensuring your vehicle's safety and performance are not compromised. By following this methodical approach, you can effectively address the tire pressure warning light issue and maintain your Ford Fiesta in optimal condition.

What could be causing the tire pressure warning light to remain on in a 2015 Ford Fiesta?

When the tire pressure warning light stays on in a 2015 Ford Fiesta, it can signal several common issues that DIYers can tackle. The most frequent cause is low tire pressure; therefore, it's essential to check each tire and inflate them to the recommended levels found in the owner's manual. If the pressure is adequate, the next step is to inspect the tire pressure sensor, as a malfunctioning sensor may need replacement to ensure accurate readings. Additionally, the tire pressure monitoring system might require recalibration, which can often be done by following the manufacturer's guidelines. It's also important to consider potential electrical faults within the monitoring system or the vehicle's wiring, as these can lead to persistent warning lights and may require a more in-depth inspection. Lastly, keep in mind that environmental factors, such as extreme temperature fluctuations, can impact tire pressure readings, making regular monitoring crucial to avoid unnecessary alerts. By addressing these common problems systematically, you can effectively troubleshoot and resolve the tire pressure warning light issue in your Ford Fiesta.

How urgent is it to address the tire pressure warning light that stays on in a 2015 Ford Fiesta?

Addressing the tire pressure warning light in your 2015 Ford Fiesta is not just a matter of convenience; it is a critical safety concern that requires immediate attention. When this warning light remains illuminated, it signals that your tires may be underinflated, which can severely compromise your vehicle's handling and braking capabilities. This increases the likelihood of accidents, particularly in emergency situations where quick response is essential. Moreover, driving on underinflated tires accelerates uneven wear, leading to premature tire replacement, which can be costly. Additionally, low tire pressure negatively impacts fuel efficiency, resulting in higher fuel costs over time. The risk of tire damage, including potential blowouts, further underscores the urgency of this issue. Therefore, it is imperative to check your tire pressure, inflate them to the recommended levels, and inspect for any leaks or punctures as soon as the warning light activates. Regular maintenance of tire pressure is essential not only for your safety but also for the longevity and efficiency of your vehicle.

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