Controlling functions and menu selection using the steering wheel buttons

See:

• Design and Function, audio module (AUM) Applies to the S60, V70, XC70 and S80
• Design and Function, Road traffic information system (RTI). Applies to the S60, V70, XC70 and S80
• Design and Function, multimedia module (MMM). Applies to XC90
• Design and Function, engine management system
• Design and Function, phone module (PHM).