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Noise from brake booster after every brake activation

Discussion in 'Roadster: Technical' started by Thorsten, Apr 17, 2015.

  1. Thorsten

    Thorsten Member

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    May 4, 2011
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    I drive a 2011 Roadster 2.5. Today I noticed a noice coming from the front after every brake activation. Until now I thought that the Roadster only creates some noice from the brake booster for the first few seconds when you start the car. It seems that now it has to create new pressure after every brake activation.

    Is this normal or do you think that something might be wrong with the breaking system?
     
  2. Jaff

    Jaff Active Member

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    I have a 2010 2.5...to me, this is normal (practically) every brake activation...jmo
     
  3. MLAUTO

    MLAUTO Member

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    It is normal, as long as it is only when you apply the brake. The Tesla uses an electric vacuum pump to create the vacuum for the Lotus power booster, but there is no additional reservior to allow for several application of the brakes before the vacuum drops and the pump goes on. If it cycles on and off when you are not on the pedal, you have a leak.
     
  4. Thorsten

    Thorsten Member

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    Thank you for your answers. I had the Impression that the break booster only made noise from time to time and not after every brake activation. And most of the time I hear music while driving. That might be the reason I didn't hear the break booster in the past.
     
  5. MLAUTO

    MLAUTO Member

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    Location:
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    The electric pump is also encased in foam to reduce noise. The foam is attached with stick on Velcro strips which may become loose, allowing more noise to be heard.
     

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