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Intermittent whining sound while braking 2012 F02 740Li

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    Intermittent whining sound while braking 2012 F02 740Li

    Hi guys,

    Any one have the same experience of intermittent whining sound while braking? The sound seems to come from around the dash board area? Could it be from the recharging of the capacitor in the efficient dynamics technology? It's quite irritating and only happens intermittently.

    Sent from my LG-H870DS using Tapatalk

    #2
    Hi,

    is it apparent at all times or only after driving a bit? You've mentioned its intermittent, these are the worst kind of to problems to solve :( since its difficult to recreate. However, try to identify other conditions that trigger the noise as well. The Efficient dynamics charges at lift off as well, does the whining sound come at that time? Use the efficient dynamics screen to assess if the noise is coming when the capacitor is charging.
    Current
    E92 M3 - Mineral White
    F80 M3 - SilverStone

    Past
    E36 318is
    E39 540i ///M sport
    VW CC
    E46 M3 - Frozen White

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      #3
      Mostly happens only after driving a bit. Maybe a bit more after a few rounds of hard braking. Most times no sound when the capasitor is charging during lift off. :(

      Sent from my LG-H870DS using Tapatalk

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