What Tire Pressure Sensor Fault Ford Experts Want You to Know

How to Reset Tire Pressure Sensor Fault Ford

Having an issue with your tire pressure monitoring system (TPMS) can be annoying and concerning, especially if the warning light comes on while you’re driving your Ford vehicle. Tire pressure sensor faults are common in Ford models, often triggering dash lights and leaving drivers unsure what to do.

To help make sense of tire pressure sensor problems in Ford vehicles, we reached out to top Ford technicians and TPMS experts. Here’s what they want Ford owners to know about avoiding, diagnosing and fixing faulty tire pressure sensors.

Understanding the Importance of Tire Pressure Sensors in Ford Vehicles

Modern Ford uses advanced TPMS technology to monitor real-time tire pressure. Sensors mounted inside each wheel send pressure readings to a central computer. If pressure drops too low in one or more tires, the system activates a warning light on the dash. Ford’s tire pressure monitoring system is an essential safety feature, for several key reasons:

• Maintains proper inflation – Underinflated tires can lead to blowouts, reduced braking, poor handling, uneven treadwear, and lower fuel economy. Proper inflation is key.
• Detects slow leaks – Small punctures or other leaks may cause gradual pressure loss. TPMS alerts drivers to falling pressure before it becomes critically low.
• Warns of rapid deflation – Fast leaks from impacts or punctures are quickly detected, allowing drivers to take action before major damage or accidents occur.
• Monitors spare tires – Ford TPMS keeps track of spare tire pressure as well, an important factor for safety when installed on the vehicle.
• Provides real-time updates – Tire pressure fluctuates with temperature changes. TPMS shows current readings, as opposed to periodic manual checks.

For all of these reasons, Ford technicians emphasize that a properly functioning tire pressure monitoring system is vital to safe operation. Sensor faults that trigger false warnings or prevent pressure tracking compromise safety and should be addressed promptly.

Common Causes of Tire Pressure Sensor Faults in Ford Cars

Ford’s tire pressure sensors are robust but still prone to failure over time. Here are the most common underlying causes of TPMS faults, according to Ford repair experts:

• Dead batteries – Sensors have integrated batteries that deplete over 5-10 years. As batteries die, the sensor signal weakens and eventually fails.
• Sensor damage – Road hazards, potholes, and improper tire rotations can damage sensor units. Cracks or internal faults prevent normal operation.
• Unseated sensors – TPMS sensors must sit flush against the wheel to function. Improper installs or loose units will cause intermittent function.
• Missing sensors – Sensors missing from one or more wheels after changes will cause the system to fault. All four (or five) wheels must have functioning sensors.
• Wheel and suspension faults – Certain wheel bearing, axle, and suspension issues can interfere with sensor signals and trigger false warnings.
• Extreme temperatures – Sensor batteries weaken in very cold weather. High temperatures can also lead to temporary signal interference.
• Radio and ignition interference – Aftermarket stereos, remote starters, and other devices can sometimes disrupt sensor-computer communication.

Paying attention to these common trouble causes can help Ford owners prevent and identify tire pressure sensor issues when warning lights illuminate.

Signs and Symptoms of a Faulty Tire Pressure Sensor in Your Ford

In addition to the obvious TPMS warning light, Ford technicians report several other signs that indicate issues with tire pressure sensors:

• The tire pressure light comes on at a cold start but turns off as tires warm-up
• A low tire pressure warning activates when tires are properly inflated
• Light flickers on/off during driving without apparent cause
• TPMS light stays on continuously despite reset attempts
• Uneven tire wear that doesn’t correlate to inflation levels
• The monitoring system reads abnormally high or low pressures
• The dashboard displays dashes or errors instead of psi readings
• The spare tire warning message appears even with no spare installed

Persistent sensor faults will often trigger the TPMS light within minutes of driving. Intermittent issues may only cause warnings under specific conditions. If in doubt, have a technician inspect all sensors for correct operation.

Diagnosing Tire Pressure Sensor Issues in Your Ford: A Comprehensive Guide

When tire pressure warning lights indicate a potential problem, here are the steps Ford techs recommend to isolate and diagnose faulty sensors:

1. Check tire pressures manually – Confirm all four (or five) tires are inflated to recommended levels, adjusting if needed. This resolves most TPMS warning lights.

2. Look for sensor damage – Inspect tire sidewalls and the valve stem area for cracks, corrosion, and damage. Replace obviously damaged sensors.

3. Check for missing sensors – Verify a sensor is present on every wheel. Look for evidence of recent service or sensor leaks. Install sensors as needed.

4. Perform a sensor relearn – Using a scan tool, complete a TPMS reset and relearn procedure per Ford’s directions. This syncs the sensors to the monitoring computer.

5. Test battery voltage – Measure battery voltage in suspect sensors. Low voltages under 2.5V indicate dead or weak batteries. Replace low batteries.

6. Switch sensors between wheels – Swap sensors side to side on the same axle. Persistent faults on one side indicate faulty sensors.

7. Isolate interference – Determine if aftermarket devices, radios, or components are interfering with sensor signals. Test by disconnecting devices.

8. Scan for diagnostic codes – Read sensor-specific OBD trouble codes that can pinpoint bad or erratic sensors. Address any stored diagnostic faults.

Following this diagnostic process allows accurate isolation of problem sensors. Most failures can then be resolved by simple battery replacements in 5-10 year old sensors.

The Impact of Tire Pressure Sensor Faults on Vehicle Safety

Driving with malfunctioning TPMS sensors has real consequences for safety, warn Ford specialists. Here are some of the risks and dangers:

• Undetected underinflation – Pressure loss may go unnoticed, resulting in blowouts or handling issues.
• Reduced braking ability – Underinflated tires require longer stopping distances. This increases accident risk.
• Poor vehicle stability – Low pressures negatively affect cornering grip, increasing chances of loss of control.
• Uneven/accelerated tire wear – Inconsistent treadwear from low pressures leads to premature replacements.
• Decreased fuel economy – Underinflated tires increase rolling resistance, requiring more fuel to maintain speed.
• Stranded drivers – Undetected punctures cause tires to go flat, potentially stranding motorists.
• Invalid pressure readings – Erratic, false or missing sensor data prevents monitoring of real-time tire pressures.

Properly functioning TPMS is fundamental to Ford vehicle operations. Sensor issues should never be ignored – instead, diagnose and repair faults promptly to restore system integrity.

How to Reset or Relearn Tire Pressure Sensors in Your Ford

Once faulty tire pressure sensors have been replaced or otherwise corrected, completing a sensor relearn procedure is essential. This synchronizes the sensors with Ford’s monitoring computer to enable accurate tracking.

Here are the steps for Ford TPMS reset and relearn processes:

• Reset/clear codes – Using a scan tool, erase any stored TPMS diagnostic trouble codes following repairs. This gives sensors a “clean slate”.
• Inflate tires – Ensure all four (or five) tires are inflated to placard pressures. This provides reference points for relearning.
• Activate sensor learning mode – Refer to the owner’s manual to trigger Ford’s sensor teach mode, typically by cycling ignition. A TPMS warning light will flash.
• Drive continuously – Drive above 25 mph for 10-20 minutes without stopping. This allows sensors time to fully synchronize readings.
• Verify operation – TPMS light should go out once readings are synced. Check pressures and warning light operation. Retry if needed.
• Perform after rotation/service – Always conduct a sensor relearn after tire rotations, replacements, or sensor service.

Relearning tire pressures is the final step in confirming full TPMS functionality has been restored in your Ford.

The Cost of Replacing a Faulty Tire Pressure Sensor in a Ford

If tire pressure sensors require replacement in your Ford, either due to dead batteries or physical damage, here are typical repair costs:

• Sensor unit – $50-$120 per sensor, depending on OEM vs. aftermarket and vehicle model
• Diagnosis/relearn – $50-$150 for diagnostic and reset procedures
• Total per sensor – Around $100-$250 for sensor and professional installation
• Full set replacement – $400-$1000+ for all four OEM sensors with labor

TPMS sensors are relatively affordable for individual repairs. Because faults normally occur in only one or two at a time, costs are minimal for most Ford owners. For older cars with batteries dying simultaneously, budgeting $800 or more for a full set may be wise.

Preventing Tire Pressure Sensor Faults: Maintenance Tips for Ford Owners

Proper care and maintenance help maximize the lifespan of Ford tire pressure monitoring systems. Here are technicians’ top tips for reducing TPMS issues:

• Check pressures monthly and keep properly inflated
• Avoid curbing wheels or pothole impacts that can damage sensors
• Rotate tires using the recommended pattern to prevent sensor damage
• Have sensors replaced if corroded or non-functional after 5-10 years
• Only use rubber valve stems, not metal, to prevent corrosion
• Ensure sensors are securely mounted if changing wheels or tires
• Avoid excessively cold winter temperatures that weaken sensor batteries
• Ask about TPMS relearns after any tire service or maintenance

Routine checks, careful driving, timely sensor replacement, and proper rotations allow Ford’s advanced pressure monitoring system to work reliably for years.

Aftermarket vs. OEM Tire Pressure Sensors for Ford Vehicles

When faced with dead or damaged Ford TPMS that require replacement, you have the choice of aftermarket or original equipment (OEM) sensors. Here’s how they compare:

In most cases, investing in genuine Ford sensors is worth the higher cost for their reliable performance and seamless compatibility with the vehicle’s tire pressure monitoring system. Aftermarket can work but may cause issues. Consult a technician for recommendations.

Solving TPMS Warning Lights in Ford: Step-by-Step Troubleshooting

When the dreaded tire pressure sensor warning appears, use this systematic process to isolate the cause:

1. Check all tire pressures manually with a gauge. Adjust to placard pressure if any are low.

2. Visually inspect tires and sensors for damage that could explain low readings.

3. Perform the TPMS relearn procedure per Ford directions to sync readings.

4. Clear any TPMS diagnostic trouble codes using a scan tool.

5. Test sensor batteries and replace any with low voltages under 2.5V.

6. Swap sensors between wheels to identify faulty units.

7. Check and eliminate sources of interference, like aftermarket electronics or devices.

8. Drive extended distances above 25mph to allow sensors time to fully relearn.

9. Replace severely corroded or damaged sensors. Use OEM Ford parts for reliability.

10. Retest after repairs or replacements. TPMS light should stay off if issues are fully resolved.

Following this methodical troubleshooting approach can systematically zero in on the root cause, whether it be simply underinflated tires, dead batteries, faulty sensors or interference. Replace suspect parts one by one until normal operation is restored.

The Technological Evolution of Tire Pressure Monitoring Systems in Ford

Ford has continuously improved their tire pressure monitoring technology over the past two decades:

• 1996 – Ford introduced the first-generation TPMS using interior-mounted sensors. Limited to warning only when tires are significantly underinflated.
• early 2000s – Second-gen systems added wheel-mounted sensors for more precise, real-time monitoring. Displayed individual tire pressures.
• 2005 – All Ford models adopt wheel-based sensors as federally mandated equipment. Added auto-relearn procedures.
• 2010 – Enhanced monitoring systems can factor temperature changes and faster alerting.
• Today – Current Ford TPMS wirelessly monitors all tires with accuracy within 1-2psi. Advanced diagnostics and programming.

Future systems may employ even more sophisticated sensor technologies for increased reliability and autonomous pressure adjustment. Continuous evolution helps Ford maintain industry-leading safety.

Ford Recalls and Technical Service Bulletins Related to TPMS Faults

Like other automakers, Ford has issued recalls and technical guidance relating to tire pressure monitoring system faults. Common examples include:

• Sensor retentions – Loose sensor fittings triggering false readings and warnings. Fixed by revised part designs.
• Sensor sealing – Early valve stem cracks allow air leaks and sensor damage. Updated rubber compounds prevent.
• Wheel incompatibility – Certain aftermarket wheels block or interfere with sensor signals. Requires TPMS-compatible wheels.
• Relearn procedures – Software bugs caused relearn issues. Updates allow more reliable sensor programming.
• Intermittent warnings – Contamination in sensors or ECUs can cause sporadic glitches. Addressed by replacements.

No complex electronic system is immune to sporadic defects. Ford issues notice and bulletins as needed to correct emerging problems – owners should keep up with recommended actions per official recalls.

FAQ

What are the most common causes of Ford TPMS warning lights?

The most common triggers for Ford tire pressure warning lights are low tire inflation, a dead TPMS battery, a faulty sensor, or improper wheel setup causing sensor interference. Warning lights can also indicate suspension, wheel bearing or axle issues.

How long do TPMS sensors last on Ford vehicles?

The batteries inside Ford’s tire pressure sensors typically last 5-10 years before losing charge and requiring replacement. The sensor units themselves are very durable if not damaged. Proper care maximizes their lifespan.

Can I just ignore a TPMS warning light in my Ford?

No, Ford’s TPMS light should never be ignored. Continuing to drive with a lit warning light means critical low-pressure or sensor issues are not being addressed, posing a significant safety risk. Diagnose and repair the underlying problem promptly.

Is it safe to swap wheels and tires between different Fords?

Wheels and tires can generally be swapped between same-year Ford vehicles. However, the tire pressure sensors must also be properly relearned after any changes, requiring a diagnostic scan tool. Mixing incompatible wheels and sensors will cause system faults.

How much does it cost to replace a tire pressure sensor on a Ford?

At a shop, expect to pay $100-$250 per sensor to replace a damaged Ford TPMS sensor. This includes new OEM sensor cost and professional installation/programming. For a full set of 4-5 sensors, budget $400-$1000+ for parts and labor.