See also:

Horn
To sound the horn, press on or close to the mark. ...

If you lose your keys
New genuine Lexus keys can be made by your Lexus dealer, using the other keys and the key number stamped on your key number plate. If communication between the electronic key and vehicle is inter- ...

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