door open electric motor sound

Discussion in 'Newbie Forum' started by novaz, May 18, 2017.

  1. novaz

    novaz Junior Member

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    Can anyone tell me what the electric motor noise is when I open the drivers door first thing on my 2015 prius C
    Thanks
     
  2. bisco

    bisco cookie crumbler

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    brake accumulator. it also tops up when you're pressing the brake from time to time.
     
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  3. jerrymildred

    jerrymildred Senior Member

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    What Bisco said. Prii love to be driven. It's like your dog fetching the leash when you put on your shoes. :D
     
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  4. xliderider

    xliderider Senior Member

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    Normal cars have a belt driven hydraulic pump driven off the crankshaft. The Prius is a hybrid that often runs on purely electric power where the engine is not running, so the brake accumulator is pressurized with an electric motor/pump.

    As mentioned, when you open the door, the electric pump is pressuring the brake accumulator so you have brake function when you make the car Ready and drive off.
     
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  5. Sam Spade

    Sam Spade Senior Member

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    The very first thing you hear (if you unlock the doors), is the tiny little electric motors moving the door locks.
    But the other answers are probably what you are really asking about.
     
  6. novaz

    novaz Junior Member

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    Thanks Guys
     
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