Automatic Mode Key Registration
WARNING: This page is about a different car, the 2002 Lexus LX 470. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
If all the registered master keys are lost, additional registration or deletion is not possible. Change the engine control module (ECM) and then register the new key codes according to the following registration procedure of the automatic registration mode.
- This must be done when installing a new engine control module (ECM).
- The new ECM is on the automatic key code registration mode. The already fixed number of key codes for this ECM can be registered. On this vehicle, up to 3 key codes can be registered.
- In the automatic registration mode, the last key registered becomes the sub-key.
- Register a new transponder key. See Fig 1.
- When a key is not inserted in the key cylinder on the automatic registration mode, the security indicator always lights on.
- When the immobilizer system operates normally and the key is pulled out, the security indicator blinks.
- When the key code registration could not be performed in the automatic registration mode, code 2-1 is output from the security indicator and when inserting the already registered key, code 2-2 is output. See Fig 2.
- If completing the mode forcibly when more than 1 key code has been registered on the automatic registration mode, perform the following procedures.
- After 1 more key code has been registered with the master key, perform step 1 or 2 without pulling the key out or inserting the already registered key.
- Complete automatic registration mode.
- Depress and release the brake pedal 5 times or more within 15 seconds.
- With the LEXUS hand-held tester, require the automatic registration mode completion.
NOTE:
NOTE: