How to Replace the Head Unit in a 2008 Volvo S40

Written by mark slingo
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The Volvo S40 comes with a factory stereo unit that includes a CD player and an AM/FM radio receiver. If the stereo unit fails or you just decide to upgrade it, you will have to remove the factory unit and install a new one. The replacement unit will function with the factory speakers, so all you need to do is connect the new unit to the Volvo's audio wiring. The job is fairly straightforward and requires just a few tools.

Skill level:

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Things you need

  • Phillips screwdriver
  • Torx screwdriver

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  1. 1

    Raise the bonnet and prop it open. Disconnect the negative cable from the battery. Move to the inside of the Volvo and sit in the driver's seat. Raise the gear stick gator. Pop off the trim around the lighter and the switches, then remove the screws that are revealed. Pop off the radio trim panel. Release the stereo head unit display, then remove the screws that are revealed. Pull the console out of the dashboard. Disconnect the stereo wiring.

  2. 2

    Plug the wire harness from the dashboard portal into the designated ports on the back of the new S40 stereo head unit. Push the connections in so they snap securely into place.

  3. 3

    Attach the radio antenna cable in the dashboard portal into the radio antenna port on the back of the new S40 head unit. Push it in fully and give it a tug to ensure that it is secure.

  4. 4

    Slide the wired stereo into the dashboard. Secure it with the screws that you removed from the old stereo unit. Reassemble the S40 dashboard and centre console. Reconnect the negative cable on the battery. Turn on the stereo to check the installation.

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