Mike's Workshop Manuals: Service manuals for every vehicle
Home >> Volvo >> 2004 >> S40 LSE >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 11 (Miscellaneous Components - Design And Function (544 Body)) >> Steering Wheel Module (SWM) (2004-2010) >> Design >> Steering Wheel Buttons

Steering Wheel Buttons

WARNING: This page is about a different variant/trim than selected.
Fig 1: Identifying Steering Wheel Buttons
GLL128582Courtesy of VOLVO CARS OF NORTH AMERICA.

The steering wheel buttons control functions and menu selection for:

The signals from the steering wheel switch left (SWSL) and steering wheel switch right (SWSR) is transmitted via LIN communication.

The steering wheel buttons are connected to the steering wheel module (SWM) via contact reel in the steering wheel hub.

There are diagnostics for the steering wheel buttons.