2003 Volvo XC90 Base, AWDFACTORY OEM SERVICE PROCEDURE

Selecting The Sound Source And Track From The Headset Panel

There are two identical button arrangements (16/111, 16/112) on the headset panel, one for each socket. These buttons are used to change the sound source and track.

When a button is pressed on the headset panel, the audio module (AUD) (16/105) identifies which button it was. This signal is transmitted between the headset panel and the Audio module (AUD) on a directly connected cable. The Audio module (AUD) then transmits information on, via the MOST network, to the Infotainment control module (ICM) (16/94), which, in turn transmits the information on to the selected sound source.

Factory Service Tools

Use the Manual With the Right Hardware

Pair factory procedures with proven DIY tools so the instructions are easier to execute.

Disclosure: Verified tool recommendations may earn an affiliate commission at no cost to you.

When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • β€’ You smell fuel, burning insulation, or see smoke.
  • β€’ Brakes feel soft, pull hard to one side, or make grinding noises.
  • β€’ The engine overheats, stalls repeatedly, or misfires under load.
  • β€’ You are missing required tools, torque specs, or safe lifting equipment.
  • β€’ You are not confident in the next step or safety outcome.