So recently, my tire pressure light blinks and then stays solid.
I put some air into the tire and try to reset it on my own but it doesn’t go away.
I used my obd2 scanner and there were no codes to read, so that’s good.
I looked up, it could be a sensor problem? I’d rather get a second opinion from the Toyota community.
I’ve already made an appointment with the dealership for next Monday. Is my car safe to drive?
Edit: 2015 Toyota Corolla.
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Always steady light means that either a tire pressure is low (75% of the correct pressure) or that the threshold was set incorrectly (someone reset the TPMS system while tires were not inflated properly).
Blinking light indicates a TPMS system failure, 99% of the time this means that a sensor has failed. The valve stems of the wheels actually have a sensor built into them that are inside of the tire, when the batteries die out (they last around 5-10 years), they cause the car to flash that light to tell you that the system is inoperative. It’s a good idea to replace all four at the same time (even better to do it when replacing all the tires because it saves $ on labor), but it’s not necessary depending on the battery life (any decent shop with the proper TPMS tool can tell if the battery on the other sensors are low, depending on how old the car is because some of them just don’t say).
Source: Am a tech at a dealership.
Blinks then solid battery is out/lost connection
solid tire pressure is below threshold.
the sensor is 30 to 40 bucks. I replaced one myself using the oem tpms sensor and reprogram it to my car using an tpms tool ts 508. I would go to a good shop and have them test the sensor like others have said. One guy was honest and said you can replace all or just replace 1. The next one died 4 years later and that is the one I replaced myself.
Ask them to see the tool they use to see the status of the sensor. The tpms tool will only show if the battery is good or low and doesn’t show the voltage of the sensor.