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HU getting power when I open the door

Discussion in 'In-Car Entertainment' started by Anito, Jan 8, 2006.

  1. Anito
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    Anito Member

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    [Jan 8, 2006]
    Guys,

    I have a lovly new B7 S4 with Sat Nav (Pics will follow). I've noticed that if I either open the boot, one of the doors or unlock the car the HU is spinning up the satnav DVD. After a few seconds it goes back to sleep.

    No key in the ignition and th HU itself is off.

    Is this correct?
    #1
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  3. imported_craigyjp
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    imported_craigyjp Guest

    [Jan 8, 2006]
    I think that is quite normal, when you open the door, the car is getting ready for you.
    #2
  4. Anito
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    Anito Member

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    [Jan 8, 2006]
    You think?

    I don't understand why this would be, afterall when I put the key in everything is up and functioning in less than a second anyway.

    To me it's a needless drain on the battery.
    #3
  5. imported_craigyjp
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    imported_craigyjp Guest

    [Jan 9, 2006]
    When you unlock your car, it comes alive and the canbus sends a signal from the central convenience to the nav unit, it then wakes up and gets ready for action.

    I would guess it also starts the GPS antenna so a fix is more readily available before you start the engine too.

    Another waste of the battery?

    Not really as the drain is minimal on a car battery.
    #4
  6. Anito
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    Anito Member

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    [Jan 9, 2006]
    ok, so it's by design then.. Thanks.
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