What is the life expectancy of a Subaru TPMS sensor?

The average lifespan of a Subaru Tire Pressure Monitoring System (TPMS) sensor is around 5-10 years, depending on various factors. TPMS sensors are an important safety feature in modern vehicles, monitoring the air pressure in each tire and alerting the driver if it falls below a certain threshold.

Understanding TPMS Sensors

TPMS sensors are small, battery-powered devices installed in each of a vehicle's wheels. They continuously monitor the tire pressure and transmit this information to the vehicle's onboard computer. When the pressure in a tire drops below the recommended level, the TPMS system triggers a warning light on the dashboard, alerting the driver to the issue.

Factors Affecting TPMS Sensor Lifespan

The lifespan of a Subaru TPMS sensor can be influenced by several factors:

• Battery Life: TPMS sensors are powered by small, non-rechargeable batteries that have a limited lifespan. The battery life can vary depending on the sensor's usage and environmental conditions.


• Driving Conditions: Sensors exposed to extreme temperatures, harsh weather, or frequent high-speed driving may have a shorter lifespan than those in more moderate conditions.


• Sensor Placement: Sensors located in hard-to-reach areas of the wheel well may be more susceptible to damage from road debris or other environmental factors.


• Maintenance: Regular tire rotations and wheel alignments can help extend the lifespan of TPMS sensors by ensuring they are not subjected to excessive wear and tear.

It's important to note that the lifespan of a Subaru TPMS sensor can vary significantly based on these factors, and regular monitoring and replacement may be necessary to ensure the system continues to function properly.

Replacing TPMS Sensors

When a TPMS sensor fails or its battery runs out, it will need to be replaced. This is typically a straightforward process, but it's important to have the work done by a qualified technician to ensure the new sensor is properly programmed and calibrated to the vehicle. Replacing a TPMS sensor can be a more complex task than simply changing a tire, so it's best to leave it to the professionals.

How much does it cost to replace a TPMS sensor on a Subaru?

The cost to replace a Subaru TPMS sensor ranges from about $100 to $250+ per sensor, depending on where you go. This includes parts and labor, with replacement being cheaper if done at a tire shop when getting new tires, as they can avoid extra labor fees. A DIY replacement with an aftermarket sensor can cost significantly less, but requires purchasing a special tool for programming the new sensor. 
Cost breakdown

• Parts:
  • Genuine Subaru sensor: Approximately $65 to $125+ each, depending on the model year and specific part. 
  • Aftermarket sensor: Often ranges from $20 to $50 each, though some high-end models can cost more. 
• Labor:
  • Dealership: Can be around $80 to $125 per sensor plus an additional charge for reprogramming (around $30-$50). 
  • Independent shop: Often cheaper, especially when done in conjunction with other tire services. Some shops may charge about $80-$120 for installation and programming, as seen in Facebook and Facebook. 
• DIY:
  • Total cost: Around $50 for a set of four sensors and the cost of a programming tool (which can range from $40 to $350+). 
  • Note: A DIY repair is only cost-effective if you are willing to invest in a programming tool. 

Other factors to consider

• The type of sensor: Older Subaru models may have bolt-in sensors, while newer ones use a snap-in or clamp-in valve. 
• TPMS module: In some cases, the issue may be with the TPMS module rather than the sensors themselves. Replacing the module can cost around $500-$600, but this is a rare issue. 
• Warranty: If you have a third-party extended warranty, it may cover TPMS replacement after a deductible, as noted in Facebook. 

Tips for saving money

• Get a quote from a tire shop: If you are already getting new tires, replace the TPMS sensors at the same time to save on labor costs. 
• Consider aftermarket sensors: They can be significantly cheaper than OEM sensors. 
• Look for TPMS deals: Some online retailers offer TPMS sensor packages for a lower price. 
• Ask your mechanic about programming: If you can't find a shop that includes programming in their price, see if you can pay an independent shop to program them after you've installed the sensors yourself. 

Do I need to replace all 4 TPMS sensors?

You do not have to replace all four TPMS sensors, but it is highly recommended, especially if the failure is due to a dead battery. The other sensors are the same age and will likely fail soon, so replacing them all at once is more efficient and can save you money and time on future appointments. 
Reasons to replace all four

• Batteries are short-lived: TPMS sensor batteries typically last 5 to 10 years and are not user-replaceable. If one has failed, the others are likely close to failing as well. 
• Cost-efficiency: It is more efficient to replace all four at once. You will save money on labor costs by having the tire removed only once for all sensors, rather than paying for labor four separate times. 
• Convenience: It prevents multiple future appointments, as each sensor will need to be replaced as its battery dies. 
• Timing: If you are replacing your tires anyway, now is the perfect time to replace the TPMS sensors, as the tire is already off the wheel. 

When you might replace only one

• If the sensor failed for a different reason: If a sensor fails due to physical damage (like hitting a curb) instead of a dead battery, the other sensors might still be good. 
• If you are on a tight budget: You can technically replace just the one that failed and wait to replace the others as they fail, but this is not the most efficient long-term solution. 

This video explains why you should consider replacing all four TPMS sensors at once: 53sAUMOVIO Aftermarket NAYouTube · Oct 18, 2022

How long do TPMS sensors last on a Subaru?

Normally, TPMS sensors are designed to last for 5 to 10 years. However, it's important to note that their batteries are non-replaceable. So, when a sensor's battery reaches the end of its life, the entire unit must be replaced.

What is the problem with the tire pressure sensor on a Subaru?

Malfunctioning TPMS Sensor
Your Subaru's TPMS system relies on small sensors inside the tires. Over time, these sensors may fail or need new batteries. If the TPMS light blinks before staying on, the sensor may need replacement.