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Load reduction relay location and number

Hongu123 Jan 30, 2020

  1. Hongu123

    Hongu123 New Member

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    Hi I have searched (a lot) for the location of the load reduction relay on my Audi A4 2002 2.0 saloon

    Can anyone point me to diagram that shows it?
    Mine only has 4 relays under the dash.

    From what I can see the number of the relay is 18
    I don't have a no.18 relay under the dash.

    The problem is my Horn, wipers, windows, indicators and cigarette lighter have all stopped working.
    When I start the car the lights, cig lighter ect. don't do out, which I though was the function of this relay.

    Please help.

    P.
     
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  3. pauldazzle

    pauldazzle Well-Known Member

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    Never heard of that relay. I would of thought the CCM (Central Convenience Module) has failed.
     
  4. stevey83

    stevey83 Active Member

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    Yep as above, sounds like you need a scan to see if you can communicate
     
  5. Hongu123

    Hongu123 New Member

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    Thanks for the replies guys.

    So it had a scan and can't communicate with the CCM.

    I have replaced it with another one and still can't communicate.

    Any ideas where to look next?

    Cheers

    P
     
  6. Hongu123

    Hongu123 New Member

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    To add to this now!

    I have fitted a new ccm, a new power control module.
    Checked the wires in the drivers door boor for broken wires.
    All to no avail.

    I then noticed a thin white and blue wire broken in the loom in the drives footwell.

    I can't find where it has come from.

    Does anyone know where this white and blue wire goes to?
    It comes from the top part of the harness.

    I can read wiring diagrams a bit but don't have the expert knowledge to trace it.

    Thanks in advance.

    Phill
     

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