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TPMS light flashes when starting car; stays

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    Hi Everyone,

    I've tried searching the forums for a similar situation: When I start my tC (2010), the TPMS light flashes for about 1 minute, and then stays on. I can't get it to turn off even after checking the tire pressure and trying to reset it using the button in the glovebox. According to the manual, a flashing TPMS light means the system has "failed"?

    I took it to the tire shop where I got new tires before, and they said there was a leak in one of the tires, and they patched it up. Things were fine for a few days, and then the TPMS light came back on. I brought it back to the shop this morning and they said they patched it again... but the light still flashes on ignition and stayed on even after driving for 30 minutes.

    At this point, I'm not trusting the tire shop. Should I just go to the Toyota dealership? Or is there any DIY I can do on my end to fix this? Thanks for all your help!
    Jak2099 wrote:
    Hi Everyone,

    I've tried searching the forums for a similar situation: When I start my tC (2010), the TPMS light flashes for about 1 minute, and then stays on. I can't get it to turn off even after checking the tire pressure and trying to reset it using the button in the glovebox. According to the manual, a flashing TPMS light means the system has "failed"?

    I took it to the tire shop where I got new tires before, and they said there was a leak in one of the tires, and they patched it up. Things were fine for a few days, and then the TPMS light came back on. I brought it back to the shop this morning and they said they patched it again... but the light still flashes on ignition and stayed on even after driving for 30 minutes.

    At this point, I'm not trusting the tire shop. Should I just go to the Toyota dealership? Or is there any DIY I can do on my end to fix this? Thanks for all your help!


    ya I agree with you not to trust that tire shop. I'm thinking that the battery might be failing on the TPMS sensors. They usually die around the 10 year mark. Usually they last about 5-7 years before they lose their battery power. The only way to fix it is to remove the old TPMS sensor(s) and replace it. Get yourself a good tire air pressure gauge and check it manually to make sure it's NOT leaking..

    I have this one.. Been very nice.. that's if you don't already have one.

    https://www.amazon.com/As...dc_15709131_t1_B07D1M74CP

    If the tire is not leaking and you still have the TPMS warning light on, then you need to replace the sensors.. If you have a good dealer (That you can trust, not all dealers can you trust) then replace the sensors. There are aftermarket sensors but you got 10 years out of this one.. mcgeorge toyota parts has great prices online, just trying to help ya save $$$
    Hey sciontc_mich, good to see you again! You helped me a lot with the check engine light / gas cap issue... I still tell people the story about how it saved me a ton of money and time.

    I've dropped my car off at a shop that seems more reputable. I'm also going to order that pressure gauge. It seems a lot better than my plastic spring-powered one. Thanks again!
    Jak2099 wrote:
    Hey sciontc_mich, good to see you again! You helped me a lot with the check engine light / gas cap issue... I still tell people the story about how it saved me a ton of money and time.

    I've dropped my car off at a shop that seems more reputable. I'm also going to order that pressure gauge. It seems a lot better than my plastic spring-powered one. Thanks again!


    hey Jak! I do remember the gas cap now that you mention it, glad to help and glad it's stayed fixed! Yeah I had some accutire branded tire gauges but they died early deaths so was looking for something that had an actual battery (like this one AAA's) and it's been very accurate. I've compared one that a good mechanic has (snap on, very accurate BUT expensive) and this one is just as good. I like the flashlight and the backlit display!

    So nice to know I'm famous with the people you talk to! ok let us know how it goes with the new shop.
    The new shop was definitely more legit and professional. They even paid for a Lyft to take me home while my car was being worked on. The downside was the cost... One of the sensors had a dead battery, and the others were low. I had all 4 sensors replaced, and the labor costs were really high.
    Jak2099 wrote:
    The new shop was definitely more legit and professional. They even paid for a Lyft to take me home while my car was being worked on. The downside was the cost... One of the sensors had a dead battery, and the others were low. I had all 4 sensors replaced, and the labor costs were really high.


    hey glad to hear the new shop actually found the problem and fixed it! Guess those higher prices were needed to help them pay for that Lyft service, lol.. But ya sucks what it cost but at least it's fixed now! yeah about 7 years from now you'll have to replace those tpms sensors again! you know your tC would go that long!
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