2020 Fiat 124 Spider Tire Pressure Warning Light Stays On

Resolve tire pressure warning light in 2020 Fiat 124 Spider: causes and solutions.

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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 2020 Fiat 124 Spider 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 2020 Fiat 124 Spider 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 are the initial steps to diagnose a persistent tire pressure warning light on a 2020 Fiat 124 Spider?

When faced with a persistent tire pressure warning light on your 2020 Fiat 124 Spider, it's essential to adopt a systematic diagnostic approach. Start by checking the tire pressure of all four tires, ensuring they are inflated to the manufacturer's recommended levels, as low pressure is a frequent culprit for such warnings. Next, inspect each tire for visible damage, including punctures or bulges, which could lead to air loss. If the tires appear fine, consider resetting the tire pressure monitoring system following the instructions in your vehicle's manual, as this can recalibrate the sensors and potentially resolve the issue. Additionally, examine the valve stems for any signs of leaks or damage that might affect tire pressure. If the warning light remains illuminated, using a diagnostic tool to scan for fault codes related to the tire pressure monitoring system can provide further insights into the problem. Lastly, if all else fails, checking the sensor batteries is crucial, as depleted batteries can lead to false warnings. Should the light persist despite these efforts, consulting a professional mechanic may be necessary for a thorough diagnosis and repair. By following this structured approach, you can effectively troubleshoot the warning light and ensure your Fiat 124 Spider is safe and roadworthy.

What could be causing the tire pressure warning light to stay on in a 2020 Fiat 124 Spider?

When the tire pressure warning light stays on in your 2020 Fiat 124 Spider, it’s important to identify the underlying issues that may be causing this alert. The most common reason is low tire pressure, which can be easily checked using a tire pressure gauge. Make sure all tires are inflated to the recommended levels, as even a minor drop can trigger the warning light. If tire pressure is adequate, the next step is to consider the possibility of a faulty tire pressure sensor, which may need replacement if it’s malfunctioning. Additionally, sensor calibration issues can occur, requiring a recalibration to ensure accurate readings. Electrical faults within the tire pressure monitoring system can also lead to the warning light remaining illuminated, so diagnosing any electrical problems is crucial. Lastly, external factors such as extreme temperature changes or rough driving conditions can affect tire pressure, so inspect your tires for any signs of damage or irregularities. By systematically addressing these potential causes, you can effectively troubleshoot the tire pressure warning light and maintain your vehicle's safety. If the light persists despite your efforts, consulting a professional mechanic or a Fiat dealership is advisable for a comprehensive diagnosis.

What immediate steps should be taken if the tire pressure warning light remains on in a 2020 Fiat 124 Spider?

When the tire pressure warning light remains illuminated in your 2020 Fiat 124 Spider, it is crucial to act promptly to ensure your safety and the longevity of your vehicle. Ignoring this warning can lead to decreased handling, increased tire wear, and even blowouts, which pose serious risks while driving. Start by checking the tire pressure in all four tires with a reliable gauge, ensuring they meet the manufacturer's specifications. If you find any tires are underinflated, inflate them immediately using a dependable air compressor. Additionally, inspect each tire for visible damage such as punctures or bulges, as these can compromise your safety and require urgent repair or replacement. Once you have addressed any pressure discrepancies or damage, reset the tire pressure monitoring system according to your owner's manual. If the warning light persists despite these efforts, it is essential to consult a qualified mechanic, as there may be a deeper issue with the monitoring system that needs professional attention. Taking these steps not only enhances your driving safety but also helps prevent costly repairs down the line.

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2020 Fiat 124 Spider Tire Pressure Warning Light Issues