The Ford Focus TPMS (Tire Pressure Monitoring System) monitors each tire’s pressure, alerting you if levels are too low or a sensor has malfunctioned. Here’s a step-by-step approach to resolving this issue.
1. Check and Adjust Tire Pressure
- Verify Tire Pressure: Use a tire gauge to confirm each tire’s pressure matches the recommended levels, which can be found on a label in the driver’s door frame or in the manual.
- Adjust as Needed: Inflate or deflate tires accordingly, then drive the car for about 15 minutes to allow the system to register the change.
2. Perform a TPMS Reset on the Ford Focus
- Turn on Ignition (without starting the engine): Switch the key to the “On” position.
- Enter TPMS Reset Mode: For many Ford models, press the hazard light button six times in quick succession. Once in reset mode, the car may prompt you to reset each sensor.
- Drive to Calibrate: After the reset, drive at least 10 minutes at a steady speed above 20 mph. This process helps the TPMS recalibrate and often clears the error.
3. Inspect the Tire Sensors and Valve Stems
- Check for Physical Damage: Look for damage or corrosion on each valve stem, which can affect the TPMS sensor. A damaged sensor will likely need replacement.
- Check Battery Life: TPMS sensors typically last 5-10 years, so an older sensor may have a drained battery, leading to the fault warning. If so, replacing the sensor should resolve the issue.
4. Use a TPMS Diagnostic Tool
- Scan for Specific Sensor Errors: A TPMS diagnostic tool can identify which sensor is faulty. Many service centers or auto parts stores offer this service.
- Replace Malfunctioning Sensors: Use Ford-compatible TPMS sensors to ensure they sync correctly with your Focus’s system.
5. Update Software (if applicable)
- Some Ford Focus models may need a software update to fix TPMS errors caused by system glitches. A Ford dealership can confirm if an update applies to your vehicle.
When to Seek Professional Help
If these steps don’t clear the error, the issue could stem from the TPMS module or electrical connections. A technician can perform a full diagnostic to find and resolve the root cause.