See also:

Volume control
Volume control You can adjust the phone call volume, the voice volume and the voice guidance volume. Refer to “Volume control buttons”. ...

Auto-dimming function
The auto-dimming function is an anti-glare capability which automatically reduces glare coming from headlights of vehicles behind you. By pressing the power button, the autodimming function is togg ...

Horn
To sound the horn, push the horn pad. ...