Everything you need is in that thread linked, good luck.
cranks but won't start with new key
- Thread starter Publius
- Start date
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@Publius It's not always super intuitive, but follow the guide that @BamaHoo linked. It is technically possible for someone to have made what looks like a master key copy (with buttons) from a valet, but that copy will always function as a valet and by design cannot be used to make further copies. Some people inherit keys like that with a used vehicle, and it's a key-making dead-end - you need the ECU reprogrammed.
If your old key (from which the new, non-starting) key was made is a confirmed original, then you should be fine. The little security light on the dash will confirm it, but if that's inconclusive you can always just try the programming sequence in that linked thread. Be patient, though - it's bunch of timed steps, and if you get them out of sequence or off-timed, the programming will fail. You can try again, though.
It also might be possible for you to do a board transplant between the old and new key heads. Carefully open them up, and if the battery/PCB/RFID package fits in the new key's plastic shell, you're all set!
I've seen some people hack the interlock by digging the RFID chip our of an old, good key and hiding it under the steering column cover, so it always deactivates the RFID ignition lock. Not very secure since you're overriding the car's anti-theft system, but probably ok for a trail rig or low-theft area.
If your old key (from which the new, non-starting) key was made is a confirmed original, then you should be fine. The little security light on the dash will confirm it, but if that's inconclusive you can always just try the programming sequence in that linked thread. Be patient, though - it's bunch of timed steps, and if you get them out of sequence or off-timed, the programming will fail. You can try again, though.
It also might be possible for you to do a board transplant between the old and new key heads. Carefully open them up, and if the battery/PCB/RFID package fits in the new key's plastic shell, you're all set!
I've seen some people hack the interlock by digging the RFID chip our of an old, good key and hiding it under the steering column cover, so it always deactivates the RFID ignition lock. Not very secure since you're overriding the car's anti-theft system, but probably ok for a trail rig or low-theft area.
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A "Toy specialist" likely won't be able to do anything, as mentioned it takes a locksmith that can flash a Toyota ECU.