Steering wheel buttons

WARNING: This page does not describe the selected car, but rather 7 other vehicles, including the 2007 Volvo V70, 2006 Volvo V70, 2005 Volvo V70, 2004 Volvo V70, and 2003 Volvo V70. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Steering Wheel Buttons

Courtesy of VOLVO CARS OF NORTH AMERICA.

The steering wheel buttons control functions and menu selection for:

Traffic information (option)
Audio (option)
Carphone (option)
Cruise control (option).

The signals from the steering wheel buttons are transmitted via serial communication.