Toyota Highlander Service Manual: Sliding roof/convertible

Engine immobilizer system

REGISTRATION 1. DESCRIPTION OF CODE REGISTRATION (a) When adding master keys and sub-keys (additional registration).  Register the key code (immobilizer code) in the transponder key ECU. ...

Sliding roof system

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More about Toyota Highlander:

Replacement
1. REGISTRATION OF RECOGNITION CODE HINT: The add mode is used to register a new recognition codes while still retaining codes already registered. This mode is used to add a new transmitter. If the number of registered codes exceeds 4, the previously registered codes will be erased in ...