Most factory-installed TPMS sensors are powered by non-rechargeable lithium batteries. On average, a TPMS battery lasts between 5 to 10 years or around 100,000 miles, depending on driving habits and environmental conditions. Once the battery runs out, the sensor usually needs to be replaced, since TPMS units are typically sealed and not designed for battery swaps.
Factors Affecting TPMS Battery Life
- Driving Habits: Frequent driving activates the sensors more often, consuming more battery power compared to vehicles that sit parked for long periods.
- Transmission Frequency: Some TPMS sensors are programmed to transmit tire pressure data more frequently, which shortens battery life.
- Temperature: Extreme temperatures have a major impact. Very cold weather can temporarily reduce battery performance, while high heat can permanently shorten battery lifespan.
- Sensor Quality: OEM sensors typically last longer than some aftermarket alternatives with lower-quality batteries.
TPMS Batteries and High Temperatures
One of the biggest challenges for TPMS battery life is exposure to high temperatures. Because sensors are mounted inside the tire near the wheel, they are constantly exposed to heat from braking, road friction, and hot climates. Lithium batteries are generally reliable, but sustained temperatures above 85°C (185°F) can cause them to degrade faster.
To combat this, manufacturers often use high-temperature lithium batteries such as lithium thionyl chloride (LiSOCl2), which are known for their long lifespan, wide operating range, and low self-discharge. These batteries can withstand both high heat in summer and sub-zero winter temperatures, ensuring reliable sensor operation year-round.
Signs Your TPMS Battery Is Dying
- TPMS warning light stays on even with correct tire pressure.
- Intermittent or missing tire pressure readings.
- One tire consistently fails to report pressure while others work fine.
Can You Extend TPMS Battery Life?
While you can’t directly replace or recharge most TPMS batteries, there are ways to maximize their lifespan:
- Ensure tires are properly inflated, reducing excessive transmissions caused by fluctuating pressures.
- Avoid prolonged exposure to extreme heat where possible, such as long-term parking on hot asphalt in summer.
- Consider high-quality sensors that use durable, high-temperature lithium batteries designed for long-term use.
Conclusion
TPMS battery life is generally reliable, with most sensors lasting many years before needing replacement. However, driving conditions and especially high temperatures can shorten their lifespan. For maximum performance and durability, choose sensors that use long-life lithium batteries