Question about 2008 Toyota Sienna

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Transponder Key Programming

I just purchased a 2008 Sienna and only received 1 key. It is the black master key. Being a cheapskate I didn't want to pay the dealer prices for a new key. I found new transponder key blanks, but is it possible to program them yourself, or does it require special equipment?

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  • Toyota Ed May 11, 2010

    You need the dealer's scan tool to program the new key.

    Also, some of the "cheaper" transponder keys do not program.

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Keys are not all the same, it is possible the key you bought may not work, it should be searched by VIN by the dealer, and the dealer has to program with factory scan tool, should cost no more than .5 hours in labor.

Posted on Jan 25, 2009

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1 Answer

Programing passkey lll is not working security light just stays on....


Do you have a master key ?
With a master passkey III key (Black), turn ON the ignition, with the engine OFF.
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Turn OFF the ignition, and wait 5 seconds.
Repeat steps 1-3 two more times for a total of 3 cycles or 30 minutes

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  • 1 First you will need to purchase a blank Toyota transponder key. You can do this from the dealership, a locksmith, or an online source such as eBay. Once you have the key, take the blank key and the master key to a locksmith that he or she can duplicate the key. This will be much cheaper than the dealership.
  • 2 Now that you have the newly cut key and the master key, you can program the Toyota transponder key. Sit in the driver's side of the Toyota vehicle. Press and release the brake and gas pedal simultaneously.
  • 3 Insert the master transponder key. Do not turn it. Push and release the gas pedal 5 times within at least 15 seconds of inserting the master key.
  • 4 Press and release the brake pedal 6 times within 20 seconds of completing step 3, then remove the master transponder key.
  • 5 Insert the newly cut transponder key into the ignition, but do not turn. Press the gas pedal once.
  • 6 Wait up to 2 minutes or whenever the security light on the dashboard turns off. Once the light goes off, remove the new transponder key and press the brake pedal once. The new transponder key should now be programmed. Test the key by attempting to start the engine. If the engine does not start, repeat the steps above.
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    You must get a new key from the dealer. Bring in the registration, and photo I.D. Then they will cut you a key. After that, try this procedure....
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    2. Observe the Security telltale, after approximately 10 minutes the telltale will turn off.
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    4. Repeat steps 1-3 two more times for a total of 3 cycles or 30 minutes.
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