Symptoms
- Light blinks for roughly 60–90 seconds at startup, then stays on
- This can happen even with correctly inflated tires
- May follow a tire rotation, new tires, or a dead sensor battery
Likely causes
- CommonTPMS sensor battery has diedSensor batteries typically last 5–10 years and aren't replaceable separately.
- CommonSensor not recognized after tire rotation or new tiresSome systems need to relearn sensor positions after tire work.
- PossibleDamaged sensor from a tire changeSensors can be cracked or knocked loose during tire mounting.
- Less commonSpare tire sensor issue (on some vehicles)Certain systems monitor the spare too.
What to do
- Confirm all tire pressures are correct first, to rule out a simple low-air situation.
- Check if the blinking started right after a tire rotation, tire replacement, or spare tire use.
- Look up whether your car needs a TPMS relearn procedure after tire service.
- If a relearn is needed, follow the automaker's steps or have a shop perform it with a TPMS tool.
- If the light still blinks after a relearn, a sensor is likely dead or damaged and needs replacement.
- Have a tire shop scan which specific sensor is at fault before buying a replacement.
- Replace only the failed sensor rather than all four unless several have failed.
Tools and parts
- Tire pressure gauge
TPMS sensorSearch: “TPMS sensor for your car make and model”
When to call a pro
See a tire shop with a TPMS relearn tool if the light keeps blinking after confirming pressures are correct.
Safety
Generally low risk
Generally low risk for a careful person. Stop if anything looks different from what this guide describes.