Vehicle Questions and Answers
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The tire pressure monitoring system (TPMS) sensors in the Toyota RAV4 usually have a battery life of about 10 years, but they might stop working sooner than that. If your TPMS dashboard light is flashing, it's probably because a sensor's battery needs to be replaced or the sensor itself is faulty. It's also a good idea to check if any of your tires are flat. While replacing the sensor's battery isn't too hard, it often requires special tools. Many drivers opt to have a mechanic replace the battery for them, which is typically affordable, but the cost can vary based on location. It could cost you as little as $20, including parts and labor.
If the chilly weather causes your tire light to blink a few times, it means your tire pressure is low. Make sure to also check your spare tire, as some have sensors too. If the light blinks for around 60 seconds, it probably means there's a faulty sensor.
It could be due to interference from an inexpensive 12-volt to USB adapter, nearby power lines, or other devices emitting electromagnetic waves. Having large metal items in the rear of your car might also cause issues with your TPMS system. While you can try replacing the TPMS sensors yourself, it's advisable to have a tire shop or mechanic check them first to identify any faulty sensors. Begin by disconnecting any gadgets plugged into your car's cigarette lighter outlets. Make sure to eliminate items with coils, motors, or cage-like structures. Confirm that all your tires are properly inflated. Drive to an area away from overhead power lines or visible ground-mounted transformers. If these steps don't resolve the problem, visit your local tire shop or mechanic, who can use a tire sensor tool to pinpoint the malfunctioning sensor.
Your tires are low on air. Remember to check and fill all your tires to the proper air pressure, including the spare. Don't forget that there's a sensor on your spare tire too. In the wintertime, cold weather can cause your tires to lose some air pressure.