See also:

Immobilizer system
The vehicle's keys have built-in transponder chips that prevent the hybrid system from starting if the key has not been previously registered in the vehicle's on-board computer. Never leave the key ...

If you lose your keys
New genuine Lexus keys can be made by your Lexus dealer using the other key and the key number stamped on your key number plate. ...

Using the steering wheel audio switches
Some audio features can be controlled using the switches on the steering wheel. 1. Turns the power on, selects an audio source. 2. Increases/decreases volume. 3. Radio mode: Selects a radio st ...