the new key must have the transponder inside. if you paid $3 for this key at home depot, or it is made of solid metal with no plastic cavity at the top containing the chip, it will never work for the ignition.
If you have a proper transponder key:
For 2002+ Toyota, Lexus
Add Duplicate Key:
Requires one working Toyota/Lexus Master Key.
1. Make sure all doors and windows are closed.
2. Insert Master key into the ignition cylinder.
3. Cycle the ignition cylinder from On to OFF five times.
4. Open and close the driver side door 6 times.
5. Remove the Master Key and insert the new duplicates key.
6. TURN THE IGNITION CYLINDER ON.
7. The new key will be registered after 60 seconds. The THEFT light on the dashboard will go out, indicating that programming has been completed.
attempt to start the car only after the theft light goes out, if the car starts, then shuts off, the key was programmed improperly and you should not attempt to keep starting the car. try again.
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