Crazy auto braking

Discussion in 'Gen 5 Prius Main Forum' started by Templeton, Jul 2, 2026 at 10:31 AM.

  1. Templeton

    Templeton Active Member

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    I know there are other threads about disabling and modulating some of the many "safety" interventions on the gen5, and those have been quite helpful.

    But one question that l could not immediately find in the manual: which of the alphabet soup "safety" interventions on the gen5 is the one that slams on the brakes when one tries to move the car a few feet while parking when the driver's door is not 100% fully closed? I would like to disable that braking, but l am not sure under which umbrella that falls.
     
  2. BiomedO1

    BiomedO1 Senior Member

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    I thought the auto/pedestrian brake only kicked on over a certain speed, only dash warnings below that. I would suspect, if there was an actual auto-brake - it would be related to the open door.

    What do I know; since I own a gen4 which doesn't do either....o_O:)(n)
     
  3. mingc

    mingc Member

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    No, that would defeat the purpose of the auto brake. I've had a pedestrian walk up and stand right next to me while I was backing up and the car slammed on the brakes. I couldn't have been going more than 2 mph. I don't know which of Toyota's multitude of acronymed safety functions controls this feature.
     
  4. BiomedO1

    BiomedO1 Senior Member

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    Well that's inconvenient; so a lamp post or someone parked too close can lock you in and the car's safety systems won't let your attempt to exit the parking spot????? Cars in front and behind you parked too close so the system won't let you try to wiggle the car out of there??? More sensors, more problems - the nanny state.

    I'm glad my gen4 doesn't do that - there's been a couple of times I had to rotate the wheel fully a half dozen times because idiots in front and back left less than 12 inches in front and in back. Luckily I always park 6-12 inches from the curb, so I can wiggle out.

    Power poles and street lamps are usually on the inside edge of the sidewalk; but occasionally they are on the outside edge; because city/town planners didn't do their job when the street was widen and didn't want to delay the project, by waiting on the utility company or electrician to relocate and rewire everything.

    YMMV
     
    #4 BiomedO1, Jul 2, 2026 at 12:54 PM
    Last edited: Jul 2, 2026 at 1:04 PM
  5. mingc

    mingc Member

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    I don't know how, but I've been able to squeeze into tight spots, albeit with the car screaming at me, without the brakes slamming on.
     
  6. Templeton

    Templeton Active Member

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    But anybody know what gen5 "safety" function auto engages the parking brake while moving the car for a few feet at 0.5 mph with the driver door not 100% fully closed?

    I would love to find that function and disarm it.
     
  7. PriusCamper

    PriusCamper Senior Member

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    Imagine if you're trying to get out of the way of an on coming train and someone who is also trying to get away from the train runs past your sensor and the car brakes and you can no longer get out of the way and the train hits your car and you die and your dad you is a super successful trial lawyer. How much BS do you think Toyota will spew before they resort to a massive "unintended deceleration" settlement to end the lawsuit without having to admit fault so the millions in penalties can be a tax write off?
     
  8. Gokhan

    Gokhan Senior Member

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    Those are the ultrasonic parking sensors, not the radars. It is called PKSB. You can disable them, but you risk damaging your bumper or hitting a small kid or animal.