How do Ford tire pressure sensors work?
Tire pressure sensors are an essential component of modern vehicles, including Ford models. They play a crucial role in ensuring safety and efficiency by monitoring tire pressure and alerting drivers to any issues. In this article, we will explore how these sensors function, their types, and their importance in vehicle maintenance.
Understanding Tire Pressure Monitoring Systems (TPMS)
Ford vehicles are equipped with Tire Pressure Monitoring Systems (TPMS) that utilize tire pressure sensors to monitor the air pressure in each tire. These sensors are designed to provide real-time data to the vehicle's onboard computer, which can alert the driver if tire pressure falls below the recommended level.
Types of Tire Pressure Sensors
There are two main types of tire pressure sensors used in Ford vehicles:
- Direct TPMS: This system uses sensors mounted inside each tire to measure the actual tire pressure. The sensors transmit this information wirelessly to the vehicle's computer system.
- Indirect TPMS: Instead of using physical sensors, this system estimates tire pressure based on the rotational speed of the tires. If a tire is under-inflated, it will rotate at a different speed compared to properly inflated tires, triggering a warning.
How Do They Work?
In a direct TPMS, each tire is equipped with a sensor that measures the air pressure and temperature. Here’s how the process works:
- The sensor continuously monitors the tire pressure and temperature.
- When the pressure drops below a certain threshold, the sensor activates and sends a signal to the vehicle's onboard computer.
- The computer processes this information and triggers a warning light on the dashboard, alerting the driver to check the tire pressure.
For indirect TPMS, the system relies on the vehicle's ABS (Anti-lock Braking System) wheel speed sensors. If a tire is under-inflated, it will rotate at a different speed than the others, prompting the system to alert the driver.
Importance of Tire Pressure Sensors
Maintaining proper tire pressure is vital for several reasons:
- Safety: Under-inflated tires can lead to blowouts and loss of control, increasing the risk of accidents.
- Fuel Efficiency: Properly inflated tires improve fuel economy, as under-inflation can cause increased rolling resistance.
- Tire Longevity: Maintaining the correct tire pressure extends the life of the tires, saving money on replacements.
Conclusion
Ford tire pressure sensors are a critical component of vehicle safety and efficiency. By understanding how these sensors work and their importance, drivers can ensure their vehicles operate optimally and safely. Regularly checking tire pressure and addressing any alerts from the TPMS can lead to a safer driving experience and better vehicle performance.
Frequently Asked Questions
How do tire pressure sensors know which tire is low?
Speed Comparison: The system continuously monitors each tire's rotational speed. If one tire spins faster than the others, it indicates under-inflation.
Why is my tire pressure light on when my tires are fine on my Ford?
This may indicate that the tire pressure sensors need replacement batteries, or that there is an issue with one of the sensors in general. To diagnose the actual problem, schedule service near Irmo at Jim Hudson Ford. Our technicians can get things figured out in no time!
How to tell if a TPMS sensor is bad?
Sensor Malfunctions: If your tire pressure is within the recommended range, but the sensor triggers a warning light, it may be malfunctioning. Handling Differences: Should you notice handling changes like swerving or flat tires without a TPMS alert, the sensor might be failing to detect these crucial pressure drops.
How does the Ford Tire Pressure Monitoring System work?
Each wheel is fitted with a sensor that, when your vehicle is on, reports the tire pressure to the cars computer. If one or more of your tires has low pressure, the system will display an indicator light on the dashboard. You will then need to check the pressures of each tire.
How do tire pressure sensors communicate with the car?
The sensor transmits that information via low-frequency radio to the vehicle's onboard computer and, if the car has one, to a corresponding display in the instrument cluster. It reads out in pounds per square inch (psi), and it illuminates an amber warning light to alert you if one or more tires are low on air.
Do TPMS sensors run out of battery?
Most TPMS sensors run on batteries that are built into the sensor and these batteries are not replaceable. The life expectancy of the lithium ion batteries in a TPMS sensor is anywhere from 5-10 years.
How do tire pressure sensors stay powered?
The majority are powered by batteries, which limit their useful life. Some sensors utilise a wireless power system similar to that used in RFID tag reading which solves the problem of limited battery life.
How can you tell which tire is low without gauges?
Without a Gauge
- Look at the wheels. An underinflated tire will appear flat where it meets the road.
- Feel the wheels. If the tire is soft when you press on it, it probably has low pressure and needs more air.
- Load weight into the vehicle.
- Look for handling changes.
- Take the vehicle to a mechanic.
How do I know if my tire pressure sensor is messed up?
Sensor Malfunctions: If your tire pressure is within the recommended range, but the sensor triggers a warning light, it may be malfunctioning. Handling Differences: Should you notice handling changes like swerving or flat tires without a TPMS alert, the sensor might be failing to detect these crucial pressure drops.
How long do Ford TPMS sensors last?
5 to 12 years
TPMS Life Expectancy
The estimated life expectancy of an OE TPMS sensor is 5 to 12 years, with the average lifespan being 7 years. TPMS life expectancy is directly related to the number of radio frequency transmissions the sensors make.
