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

...

More about Toyota Highlander:

Registering a bluetooth® audio player for the first time
To use the bluetooth® audio, it is necessary to register an audio player with the system. Once the player has been registered, it is possible to use the bluetooth® audio. For details about registering a bluetooth® device Turn the bluetooth® connection setting of your audio player on. ...