Modern cars are equipped with a Tire Pressure Monitoring System (TPMS) to keep drivers safe and improve fuel efficiency. The TPMS alerts you when your tire pressure is too low, reducing the risk of blowouts and uneven tire wear. But like any car system, TPMS can sometimes malfunction. This guide explains how to fix a car’s TPMS, common issues to look out for, and preventive maintenance tips.
Why TPMS is Important
- Safety: Prevents accidents caused by underinflated tires.
- Fuel Efficiency: Proper tire pressure improves mileage.
- Tire Life: Reduces uneven wear and extends lifespan.
- Convenience: Real-time alerts help avoid roadside emergencies.
Common TPMS Problems
- False Warnings – Light comes on even when tire pressure is correct.
- Sensor Battery Failure – Most TPMS sensors run on batteries that last 5–10 years.
- Damaged Sensors – Road debris or improper tire changes can break sensors.
- Communication Issues – Sensor may fail to send data to the car’s ECU.
How to Fix a Car’s TPMS
1. Check Tire Pressure First
- Use a reliable tire pressure gauge.
- Inflate tires to the manufacturer’s recommended PSI (found on the door frame or manual).
- Sometimes, correcting the pressure resets the TPMS automatically.
2. Reset the TPMS
- Locate the TPMS reset button (usually under the steering wheel or glove box).
- Turn the ignition key to “ON” without starting the car.
- Hold the button until the TPMS light blinks 3 times.
- Drive for 10–15 minutes at 40–60 km/h to recalibrate.
3. Inspect the TPMS Sensors
- If the warning light persists, the sensor may be faulty.
- A diagnostic scan tool can detect which sensor is not working.
- Replace damaged sensors with OEM-compatible parts.
4. Replace Dead Sensor Batteries
- Some sensors allow battery replacement, while others require a full sensor replacement.
- Professional installation is recommended for reprogramming.
5. Check for ECU or Wiring Issues
- In rare cases, wiring or the control module may be the issue.
- This usually requires a mechanic with TPMS diagnostic equipment.
Prevention Tips for TPMS Maintenance
- Check tire pressure monthly with a manual gauge.
- Avoid harsh impacts (like potholes) that can damage sensors.
- Replace sensors every 5–10 years or as recommended.
- Service TPMS during tire changes to avoid accidental damage.
FAQs on TPMS Fixes
Can I drive with a faulty TPMS?
Yes, but it’s risky since you won’t know if your tires are underinflated.
How much does it cost to fix TPMS in India?
Sensor replacement costs range from ₹2,000–₹5,000 per tire, depending on the car model.
Will disconnecting the car battery reset TPMS?
Sometimes, but it’s not a guaranteed fix. Use the reset button or follow the manufacturer’s procedure.
Final Thoughts
Fixing a car’s Tire Pressure Monitoring System (TPMS) often involves simple steps like checking tire pressure or resetting the system. However, sensor failures or wiring issues may require professional help. Regular maintenance ensures the TPMS works reliably, keeping you safe on the road while improving efficiency and tire life.