The Tire Pressure Monitoring System (TPMS) monitors air pressure in each tire and alerts you with a dashboard light when pressure drops below a safe threshold. Each wheel has a battery-powered sensor inside the tire. When a sensor fails, it needs replacement — not just a reset.
What a TPMS sensor is and why it fails
Each TPMS sensor is a small electronic device mounted on the inside of your wheel, typically attached to the valve stem. It measures tire pressure and transmits readings to your vehicle's computer wirelessly.
TPMS sensors fail primarily because the internal battery dies — and because the battery is sealed inside the sensor, the entire unit must be replaced. Battery life is typically 5–10 years depending on usage.
Sensors can also fail from physical damage (bent valve stem from curb impact), corrosion (especially in road-salt regions), or age-related electronic failure.
TPMS sensor replacement cost
Aftermarket sensor: $20–50 per sensor (part only).
OEM sensor: $40–100 per sensor (part only).
Labor: $10–25 per sensor (sensor swap) plus $10–20 per tire for demount/remount if the tire needs to come off.
Programming: $20–40 per vehicle (one-time; the shop relearns all sensors to your car's computer).
Total installed cost per sensor: $50–150. A full set of four: $200–400.
Dealer pricing is higher — $100–200 per sensor is common at dealerships. Independent tire and auto shops cost significantly less.
TPMS reset vs. sensor replacement
A TPMS reset (also called a relearn) is different from a sensor replacement. A reset re-syncs working sensors to the vehicle's computer — it is done after rotating tires, changing wheels, or after adding air.
A TPMS reset costs $0–30. It does NOT fix a dead sensor.
If your TPMS light stays on after inflating all tires to correct pressure, one or more sensors have failed — a reset will not fix it. The sensor needs replacement.
Frequently asked
Can I drive with the TPMS light on?
Technically yes, but with reduced safety. The TPMS light exists to warn you before a tire becomes dangerously low. Without it, you can unknowingly drive on a significantly underinflated tire — which increases blowout risk and destroys tires quickly. Check pressure manually and get the sensor replaced promptly.
Do I have to replace the TPMS sensor when I get new tires?
Not automatically — but if your sensors are 5+ years old and the mechanic is already dismounting tires, it is a cost-effective time to replace them. Ask about sensor age and battery status before deciding.
Why does my TPMS light come on in cold weather?
Cold temperatures reduce air pressure — roughly 1 PSI per 10°F drop. Your TPMS system triggers when any tire drops below minimum threshold. Inflate all tires to the door-jamb spec (not the sidewall max) and the light should go off after a few miles. If it stays on, a sensor may have failed.
Last updated 2026-06-27. General guidance only — confirm specifics with a local shop for your exact vehicle.