Problem with Volvo 2005 S40

Just purchased used 2004.5 S40 T5. Both Low beams are out. Have a gut feeling its not the bulbs. Any experience with this failure mode?

Posted by avatar on Feb 04, 2011

Solutions (1)

Best Solution

If it is not the bulbs (which is possible) you will have to trace the wiring to see where you are loosing power. We have replaced 3 Central Electric Modules (CEM) in the last 6 months. If you need a wiring diagram, let me know.

    • By avatarjohn_heidelb Feb 07, 2011
    • mdavisnet,
      The wiring diagram will be helpful. Another electrical issue for me to address is the malfunctioning video display located directly above the HVAC/ radio controls. Would that be serviced by the Central Electric Modules (CEM) as well? Judging from the two verticle bars traveling back

    • By avatarmike davis Feb 08, 2011
    • Not quite sure if the CEM controls the display of any othe control units. I'm having trouble attaching the wiring diagram to this post. If you can give me an e-mail address, I'll be happy to send it on to you.

Suggested Solution (1)

If it is not the bulbs (which is possible) you will have to trace the wiring to see where you are loosing power. We have replaced 3 Central Electric Modules (CEM) in the last 6 months. If you need a wiring diagram, let me know.

  • by Author image mike davis Over a year ago

    • By avatarjohn_heidelb Feb 07, 2011
    • mdavisnet,
      The wiring diagram will be helpful. Another electrical issue for me to address is the malfunctioning video display located directly above the HVAC/ radio controls. Would that be serviced by the Central Electric Modules (CEM) as well? Judging from the two verticle bars traveling back

    • By avatarmike davis Feb 08, 2011
    • Not quite sure if the CEM controls the display of any othe control units. I'm having trouble attaching the wiring diagram to this post. If you can give me an e-mail address, I'll be happy to send it on to you.

Source: Just purchased used 2004.5 S40 T5. Both Low beams

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