Many Honda Clarity and CR-V owners experience frustrating Tire Pressure Monitoring System (TPMS) alerts even when tire pressure appears normal. This common issue can distract drivers and raise unnecessary safety concerns. Understanding how your vehicle's TPMS works and learning proper troubleshooting techniques can help resolve these alerts effectively.

The Tire Pressure Monitoring System serves as a crucial safety feature designed to alert drivers when tire pressure falls below or rises above recommended levels. By maintaining proper tire inflation, TPMS helps optimize vehicle handling, braking performance, and fuel efficiency while extending tire lifespan and reducing blowout risks.

However, like any electronic system, TPMS can occasionally generate false alerts. These erroneous warnings often stem from unique characteristics of indirect TPMS systems used in Honda Clarity and CR-V models.

Unlike direct TPMS systems that use individual tire pressure sensors, Honda's indirect TPMS relies on wheel speed data from the anti-lock braking system (ABS). This design creates distinct operational characteristics:

• Direct TPMS: Uses pressure sensors in each tire to transmit real-time data wirelessly to the vehicle's computer
• Indirect TPMS: Monitors wheel rotation speeds through ABS sensors, detecting pressure changes based on rotational differences

While cost-effective, indirect systems demonstrate greater susceptibility to environmental factors and require specific calibration procedures.

Begin by checking all tires with a high-quality pressure gauge when tires are cold (preferably in the morning). Confirm readings match manufacturer specifications found on the driver's door jamb sticker or owner's manual. Temperature fluctuations significantly affect pressure readings—expect approximately 1 PSI change per 10°F temperature variation.

After adjusting tire pressure, recalibrate the system through vehicle settings:

1. Start the vehicle
2. Navigate to TPMS calibration in settings menu
3. Follow on-screen instructions
4. Drive at 30-60 mph for about 30 minutes to complete learning

Calibration proves particularly important after tire rotations, replacements, or seasonal temperature changes.

Uneven tread wear affects wheel rotation speeds, potentially triggering false alerts. Measure tread depth across all tires using a depth gauge. Significant variations (more than 2/32-inch difference) may indicate alignment issues or suspension problems requiring attention.

Since indirect TPMS depends on ABS sensors, any malfunction in these components can generate erroneous alerts. Check for illuminated ABS warning lights and consult a professional technician if sensor issues are suspected.

Bent or damaged wheels can alter rotational characteristics. Visually inspect each wheel for visible damage and consider professional evaluation if impact damage is possible.

Weak vehicle batteries can cause various electronic system irregularities, including TPMS malfunctions. Have your battery tested if it's more than three years old or showing signs of weakness.

If these steps don't resolve persistent alerts, consult an authorized Honda service center—especially if your vehicle remains under the 3-year/36,000-mile warranty coverage. Certified technicians can perform advanced diagnostics to identify potential system faults.

• Monthly tire pressure checks (including spare tire if equipped)
• Seasonal pressure adjustments for temperature changes
• Regular tire rotations every 5,000-8,000 miles
• Prompt attention to any TPMS warning lights

By understanding your Honda's TPMS operation and following proper maintenance procedures, you can minimize false alerts while ensuring optimal tire performance and safety. Remember that indirect TPMS systems require different care approaches than direct systems, with calibration being particularly critical after any tire-related service.