Question about 2005 Toyota Avalon

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Toyota avalon 2006 key fob apparently doesn't work

Hello, thank you in advance for your help. I went out to warm up our 2006 avalon and the car is not recognizing the key fob I had with me and would not start. It's the keyless start where the keyfob must be present. No mechanical key to start the car.

I also tried to lock and unlock the doors with it and nothing. I tried to open the trunk with it and nothing. I tried the second key fob and again, nothing which leads me to believe it's the car, and not the fob. The battery is fully charged on the car. HELP.

Your drop down list does not have 2006, but it is a 2006, not the year below.
Thanks again.

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  • macriver33 Dec 23, 2008

    Thank you so much for your response. I did take the miniature battery out and tested the voltage. It was a 3 volt battery and it tested at 2.3 volts. I figured that was high enough. I did finally read that if you held the smart key to the button on the dash, like actually touching, the car would start. It did start but the car will still not start by pushing the dash button nor will the locks or trunk work with the smart key. I thought maybe the car had to be re-programmed. I will try a new battery for the smart key.



    would enjoy hearing from you again.



    Dane Palmer

  • Anonymous Mar 31, 2014

    my mother in law broke her 2006 kia spectra5 key fob, how do you program a new one so it will work on her car?

  • Anonymous Apr 01, 2014

    car not recognizing key

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  • Toyota Master
  • 1,861 Answers

It looks like you have the "Smart Key" (a small rectangular box) that does not look like a traditional key.
What you also have is a dead battery inside the Smart Key.
Look closely at the box; there is a little button on the side. Press it. This will release a small hidden key. After you remove the small key, use a small flat blade screwdriver to pry the case of the box open at the slot provided. Take the unit to a store that sells miniature batteries, and have it replaced. You will NOT have to reprogram it after the battery is changed. The life span of the miniature batteries is roughly 20 months, less if exposed to RFI, like sitting on a TV, a monitor, or other electrical device. The Smart key TRANSMITS all of the time, even when you do not press the buttons. This is why the battery only lasts 18-20 months. Let me know if this fixes your issue..

Posted on Dec 16, 2008

  • Toyota Ed Dec 23, 2008

    Do replace the battery; this will rectify your situation. That is why the spare "key" is provided. To open the door in the event thatthe remote does not have enough power to transmit the unlock command. I am sure that the battery replacement will fix you up. The graciousness of a FixYa rating would be most appreciated. Thanks; let me lnow when the battery is changed and the remote is working again.

  • Kevin Kivimaki
    Kevin Kivimaki Oct 13, 2017

    Greetings, Toyota Ed. Your tip still works 9 years later. I wasn't sure that was the problem since both FOB's were dead - both the keychain FOB and the "backup" in the key basket, but sure enough that's what it was. I've only had this car since June so this was a surprise. Thanks again!

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