See also:

Keylock
When you switch off the ignition, the gear selector must be in the P (Park) position before the key can be removed from the ignition switch. ...

Horn
Horn - Press the steering wheel hub to sound the horn. ...

Key memory: door mirrors and driver's seat
The position of the side door mirrors and power driver's seat are stored in the remote keys when the vehicle is locked. The next time the driver's door is unlocked with the same remote key ...