I just had a software update and this is happening

Are the tire pressures good?

It could be that one of the sensors was on its way out and needs replaced and it is ironic timing.

If pressures are good, that’s what I’d say.

Good luck and keep us posted .

 

Maybe the software update cleared out the TPMS sensor IDs? (It takes 20 minutes for the TPMS light to go on if the sensors are not recognized.)

 

Were you running higher pressures? If so, and you had done the TPMS reset at that higher, and they set them lower (especially if they did it soon after you arrived, tire pressures elevated due to driving), that might have triggered the TPMS.

Yes, first step, get that out of the way.

 

Those sound like a defective/missing sensor. But again: check pressures first. Or even just visually check, very first, lol.

 

Did you try resetting the TPMS?

If that doesn't work, you can disable the system by using the trick in this post. Read beyond that post until the end, because you’ll probably jumper the wrong holes. The diagram is showing the backside of the connector.

Idea to fool the tire pressure sensors | Page 3 | PriusChat

 

Just to ask the stupid question: you raised the pressures, and light did not go out?

 

As others have chimed in, the blinking TPMS light that stays solid means one or more of TPMS inside tires are bad. It is just a coincidence, software update or cabin filter change has nothing to do with it. Your car is 9 years old, and battery in TPMS sensors are rated to last ~7 years. If you really want to fix it, take your car to any tire shop and ask for an aftermarket TPMS sensor. It should be about $50 labor included for one TPMS if only one dead battery. If you take your car back to a dealer and use OEM TPMS the same procedure will cost you upward of $200. However, even if only one dead battery, it may be prudent to change all four TPMS preemptively to save your time and money later. How are your tires on your car? If they are due to replacing soon, I would just wait until you are ready to buy a new set of tires and install a new set of 4 TPMS at that time to save even more time and cost on installation. Or, you can simply ignore TPMS warning light altogether and buy one of external TPMS monitor (~$40 at Amazon) or practice due diligence on monitoring tire pressure on a regular base with your handheld pressure gauge.

 

As the above poster stated. You have one or more TPS with a dead battery. Need to replace one or more.

 

The TPMS light in our 2007 was doing the same thing as the OP's several months ago. When I went into Techstream, I saw that one of the sensors was not reporting. I thought I would replace that one sensor when I put on new tires, but after clearing the code a couple of times, the light has stayed off. (Actually, it has come on solid a couple of times since, but when I checked the tire pressures, I have found one of them to be low, whenever the light has been lit). Someone mentioned that although the batteries will eventually die, they can sometimes be brought back to life, through some unknown process. I'm wondering if the act of trying to poll them through Techstream or possibly resetting them several times using the under dash button might have temporarily resurrected the one that was giving us problems. (Of course, now that I've said something, it is sure to start acting up again.)