Driving a Ford comes with the peace of mind that the vehicle is built for reliability and performance. However, sometimes, even the best cars can face issues. One problem that many Ford owners encounter is a faulty tire pressure sensor. The tire pressure monitoring system (TPMS) is designed to alert you when your tires are underinflated, but when the sensor malfunctions, it can cause confusion and even lead to safety risks.
In this guide, I’ll share with you the most common warning signs of a faulty tire pressure sensor in your Ford, helping you catch the problem before it becomes more serious.
What is a Tire Pressure Sensor?
The tire pressure sensor is part of your vehicle’s TPMS. Its job is to monitor the air pressure inside each tire and alert you if any tire is underinflated. This is crucial because underinflated tires can decrease fuel efficiency, wear out faster, and, most importantly, increase the risk of an accident.
The sensor can either be part of the valve stem or located inside the tire itself. It communicates with your car’s onboard computer to display the tire pressure on the dashboard. When the sensor is working correctly, it helps ensure a safer and smoother driving experience.
The Tire Pressure Light is On
One of the first signs that something might be wrong with your tire pressure sensor is when the tire pressure warning light comes on, even when your tires seem fine. This light typically appears as an exclamation mark inside a horseshoe shape, located on your dashboard.
If the light stays on despite checking and inflating your tires to the correct pressure, there’s a good chance that your tire pressure sensor is malfunctioning. Sometimes, this can happen due to a bad sensor or a faulty connection between the sensor and the system. If you’ve already confirmed that your tire pressure is correct, then it’s time to investigate the sensor.
Tire Pressure Warning Light Flickers
If you notice that the tire pressure warning light flickers or blinks intermittently, this could be another indication that the tire pressure sensor is faulty. A blinking light often signals that there’s an issue with the system, such as a loose connection or a problem with the sensor’s power source.
If the warning light doesn’t stop blinking after a while, it’s important to take your vehicle to a mechanic. The sensor might be having difficulty transmitting the correct data, and it could be malfunctioning.
Inaccurate Tire Pressure Readings
One of the most common signs of a faulty tire pressure sensor is inaccurate readings. If your dashboard shows a tire pressure that doesn’t match the actual pressure in your tires, the sensor is likely having trouble measuring the pressure correctly. For example, you might see that your tire pressure is higher or lower than what it should be, or the system might display the same reading even after inflating your tires.
Inaccurate readings could happen for several reasons: the sensor might be damaged, or there could be a problem with the communication between the sensor and the car’s system.
Sudden Tire Pressure Warning During Drive
If you’re driving and suddenly see a tire pressure warning light appear on your dashboard, it could indicate a malfunctioning sensor. While this could also mean that your tire pressure has dropped suddenly, it’s more likely that the sensor is sending a false signal to your car’s computer.
For instance, if you’re cruising on the highway and the light comes on, but the tires seem fine when you stop to check, it could be due to a faulty sensor. This is especially true if the light turns off after restarting the vehicle or driving for a short while.
Unusual Tire Pressure Sensor Sound
Some Ford models may emit a beeping sound when the tire pressure warning system detects an issue. If the sound comes on without a clear reason, such as after a tire pressure adjustment or when driving normally, it could point to a problem with the sensor. The beeping may not always appear with a visible warning light, but it still indicates a malfunction.
Tire Pressure Light Turns Off and On Repeatedly
If your tire pressure light keeps turning on and off, it might be a sign that the sensor is having difficulty reading the tire pressure accurately. This can happen if the sensor is malfunctioning or if there’s a loose wire somewhere in the system. Repeated cycling of the light is not a normal occurrence, so it’s essential to get it checked out.
Sensor Not Resetting After Tire Change or Rotation
After you replace or rotate your tires, the tire pressure sensor should reset automatically. If you notice that the sensor doesn’t reset after a tire change or rotation, it could be an indication that the sensor is faulty or that there’s an issue with the TPMS system.
In some cases, the reset process can be manual, requiring you to follow a specific procedure to recalibrate the sensor. However, if the sensor still doesn’t reset, you might need to replace the sensor.
What to do if you notice a faulty tire pressure sensor
If you notice any of the warning signs mentioned above, it is important to address the problem as soon as possible. Here is what you should do:
Check the tire pressure: Start by making sure that all four tires are properly inflated. If the tire pressure is correct, the problem is likely with the sensor.
Inspect for damage: Visually inspect the tires for visible damage or punctures. The sensor may also be bad if the valve stem is damaged or if the tire has a leak.
Reset the system: Try resetting the TPMS system to see if that clears the warning light or resolves the problem. You can do this by following the steps in your owner’s manual or by turning the vehicle off and back on.
Visit a mechanic: If the warning light is on or the problem persists, take your vehicle to a trusted mechanic or Ford dealership for a diagnostic check. They can test the sensor and determine if it needs to be replaced or repaired.
Conclusion
A faulty tire pressure sensor can be frustrating and even dangerous if not addressed quickly. By keeping an eye out for warning signs like a constantly flashing warning light, incorrect readings, or unusual behavior from the system, you can prevent major problems down the road.
If you notice any of these signs on your Ford, it’s a good idea to have the sensor checked and replaced if necessary. Taking care of your tire pressure sensor will ensure that your vehicle remains safe, efficient, and reliable in the long run.
FAQ
How do I know if my tire pressure sensor is bad?
If the tire pressure warning light stays on or flickers even when the tires are properly inflated, or if the system shows inaccurate readings, the sensor might be faulty.
Can a faulty tire pressure sensor affect driving?
Yes, a faulty sensor can lead to inaccurate tire pressure readings, which may cause you to drive with underinflated tires, reducing fuel efficiency and increasing the risk of tire damage.
How much does it cost to replace a faulty tire pressure sensor in a Ford?
The cost of replacing a tire pressure sensor can vary but generally ranges from $100 to $250 per sensor, including labor costs.
Can I drive with a broken tire pressure sensor?
While it’s safe to drive with a broken sensor, it’s not advisable because it will prevent you from knowing if your tires are underinflated, which can lead to safety issues.
How do I reset the tire pressure sensor on my Ford?
To reset the tire pressure sensor, follow the instructions in your vehicle’s owner’s manual. In many cases, it involves turning the ignition on and off or pressing a reset button.