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disabling vess

Discussion in 'Gen 5 Prius Technical Discussion' started by phase, Mar 28, 2024.

  1. phase

    phase Junior Member

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    has anyone disabled the VESS or changed the sound or lowered the volume in their gen 5 prius? that loud spaceship sound is pretty annoying when even driving thru a drive thru or to get to the mail box or when slowly driving in national parks and trying to get wild life photography
     
  2. Mendel Leisk

    Mendel Leisk Senior Member

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    #2 Mendel Leisk, Mar 29, 2024
    Last edited: Mar 29, 2024
  3. Trollbait

    Trollbait It's a D&D thing

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    I was thinking this was an alternative acronym for the vehicle stability control when I clicked it.

    The pedestrian warning noise is a legal requirement. Very little, if anything, you can do to adjust it.
     
  4. Hammersmith

    Hammersmith Senior Member

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    There's a thread here somewhere where someone lays out the parts needed to reversibly disable the front speaker without causing an error code. It takes about $15 worth of parts(a couple electrical connectors from Toyota, some wire, and a couple resistors).

    The big caveats are that it's illegal in the same way as a lot of window tinting or truck tires that protrude beyond the wheel arches. Also that it completely disables the front speaker so no fancy chime when you lock/unlock the doors. And it would be really bad if you did the mod then were involved in a pedestrian collision. If discovered, it's certain your insurance company wouldn't pay out and your liability in a lawsuit would increase dramatically. So buyer very much beware.

    A more perfect solution would be a version of the device that could be turned off temporarily. That would be great for things like a drive thru, driving through wilderness, getting the mail on a remote property with no pedestrians around, etc. But I don't know if anyone's done anything like that(and it's definitely not doable without mods).

    Personally, I've bought the parts for the simple solution but haven't bothered to assemble and install them. Working on my spare tire and side mirror mods was a more important use of my time, so the front speaker parts just got thrown on a shelf and ignored.
     
  5. phase

    phase Junior Member

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    my ioniq doesnt have the sound. so i get to enjoy the quiet ev mode. the laws werent made yet. the toyota sounds are so loud and annoying, and id hate that on my car. sure it can affect pedestrians, but so can getting hit by a golf cart thats driving twice the speed. not to mention the common rule of looking both ways before stepping out into traffic.
     
  6. bisco

    bisco cookie crumbler

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  7. kenmce

    kenmce High Voltage Member

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    I saw an electric Subaru this morning. I hadn't known there was such a thing so I was looking it over. They call it a "Solterra". I watched the owner get in and drive off. I could hear a slight engine whine and the crackling of the tires on the pavement, but no pedestrian warning sound at all.

    Phase,

    Rather than disable it, consider putting a rheostat on it, leave it full up for daily driving, low for special occasions. You'd have the best of both worlds.
     
    #7 kenmce, Apr 2, 2024
    Last edited: Apr 2, 2024
  8. Gokhan

    Gokhan Senior Member

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    Needless to say, do not do illegal things. In fact, do not even post on the Internet about your intention of doing illegal things.

    Even with the speaker sound, pedestrians often can't hear me approaching.
     
  9. phase

    phase Junior Member

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    is it illegal to disable it or is it just the law for car companies to include it? just like side mirrors in the us. car companies are required to put mirrors on from the factory, but its not illegal to take off the side mirrors in almost every single state as long as your rearview mirror isnt blocked
     
  10. HacksawMark

    HacksawMark Member

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    The only time it would be an issue is if you run into a pedestrian and they claim they did not hear your car. They could potentially find that the VESS was disabled and find the driver is at least partially liable.
     
    GcinFl likes this.
  11. Gokhan

    Gokhan Senior Member

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    It is also dangerous to the animals like cats that sleep or sit under your car if you disable it.
     
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  12. Zeromus

    Zeromus Member

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    I just dont get how it can be annoying in a drive through when like, really, a big loud engine is even louder and more annoying. I find I can't hear the spaceship sound in the house if the car is being pulled out the garage, as the sound is of a tone that is attenuated pretty well by pretty much everything. Unlike the bassy/rumbly sound of an older engine for example which cuts through everything.

    And when you're not moving, it turns off and is silent. Its still a pretty good compromise.

    I also don't drive my car ultra short distances to do stuff like get the mail, so I don't get that side of the argument either. Coming home quietly... maybe? But my garage door opener and metal garage door lifting are both louder and more disruptive in that sense.
     
    flarecde and GcinFl like this.
  13. phase

    phase Junior Member

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    never had an issue with it and my ioniq that doesnt produce a sound...

    heard a toyota hybrid in parking garage last night and the sound was so high pitched and echoeing everywhere and much louder than a typical ice vehicle
     
  14. bisco

    bisco cookie crumbler

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    perhaps your ioniq is older than the federal law?
     
  15. Gokhan

    Gokhan Senior Member

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    It is not a question of "have never had." You never have an accident until you have one. It is a question of "could have."