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Automatic Emergency Braking Issue

Discussion in 'Model 3' started by Finn211, Jul 24, 2018.

  1. chronopc

    chronopc Active Member

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    I would consider this a safety issue, so the wait shouldn't be long.
     
  2. ebmcs03

    ebmcs03 Active Member

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    Oh man that sucks. In my last car I had a small fender bender Similar to your case. I got EAP just so I can avoid that same situation. Sucks to hear it won’t work under 7mph
     
  3. Az_Rael

    Az_Rael Supporting Member

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    Note that EAP works just fine all the way down to 0 mph. The issue here was the OP lightly had their foot on the accelerator which overrides EAP braking. That leaves the emergency system, AEB, which is the part that doesn't work under 7mph apparently.

    If you use EAP and keep your foot off the accelerator, it works just fine in stop and go (barring sudden cutoffs and other driver craziness that you always have to keep an eye out for)
     
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  4. chronopc

    chronopc Active Member

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    You definitely should always be keeping an eye out. I've allowed EAP to handle sudden cutoffs and it actually did a good job of stopping in time. It will slam on the brakes but it will stop in time.
     
  5. chillaban

    chillaban Active Member

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    Note that some cars (the Cadillac ATS comes to mind) have tried to use parking sensors to provide low-speed AEB and FCW. Note that most people have complained that doing so results in a lot of false activations during parking maneuvers or when getting too close to blades of grass and other mundane objects.

    But definitely, in terms of driving habits, in any car with an adaptive cruise control system, you really want to train yourself to not rest your foot on the accelerator. Doing so will override its braking and in a lot of cases override both FCW and AEB.
     
  6. mswlogo

    mswlogo Active Member

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    If OP had Creep On, I would think in bumper to bumper traffic his foot would have been resting on the brake !!

    Just saying ;)
     
  7. apsen

    apsen Member

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    You mean he would have lifted his foot and collided that way?
     
  8. mswlogo

    mswlogo Active Member

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    While he got distracted he would have errored on the side of stopping rather than going.
     
  9. JeffK

    JeffK Well-Known Member

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    It wasn't an error though as he commanded the car to move forward. No matter how you command the car to go forward, it will go forward at those speeds.
     
  10. mswlogo

    mswlogo Active Member

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    He was resting his foot on the gas pedal ready to "creep" forward in traffic when he got distracted.
    If he was resting his foot on the brake with creep on in order to creep forward he would have commanded it to "stop" instead of "go" by accident.
     
  11. JeffK

    JeffK Well-Known Member

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    That's not quite how it works unless your foot is all the way on the brake. If it's not all the way down you'll continue to roll forward. Likewise you could similarly argue he wouldn't have gone anywhere at all if his foot wasn't on the accelerator at all.

    Moral of the story: Don't rest your foot on the accelerator unless you wish to go with creep on or off.
     
  12. mswlogo

    mswlogo Active Member

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    I leave my foot on the brake in traffic. It can be on there pretty lightly. You can screw up in either mode.
    With creep off I can see why someone would have their foot just ready on the accelerator to "creep" forward.

    Creep On is easier and less error prone in this situation (one foot driving and your foot is on "stand by" on a "safer" pedal).

    I'll bet this little bump wouldn't have happened with Creep On. We can both speculate all we want. That's my speculation.

    Moral of the story: Turn Creep On and you'll train your foot to "rest" on the brake in traffic.
     
  13. apsen

    apsen Member

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    No, thank you! I have enough of that on my ICE cars.
     
  14. mswlogo

    mswlogo Active Member

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    Just because that’s how Automatics work on ICE doesn’t means it’s wrong.

    ICE vehicles have wipers, a horn, a radio ... have you had enough of that too?
     
  15. apsen

    apsen Member

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    So now I have to suffer that on my Tesla just because it is that way on ICE cars?
     
  16. Twiglett

    Twiglett Single pedal driver

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    Do you want nanny alerts and chimes and false braking events every time the car thinks you’re going to run into the car in front when you have your foot on the accelerator.
    Or would you rather just take responsibility like an adult?
    I’ll take the latter and forego the annoying alerts thanks
     
  17. bradhs

    bradhs Member

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    I know Tesla can stop the car, our BMW will stop no matter what speed you are going. You cannot back into or run into a vehicle in our BMW. I want Tesla to do the same.
     
  18. apsen

    apsen Member

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    Oh, yes I do. I do not believe to be infallible. I'd rather have the car nanny me than regret for that one case when I have slipped and caused some harm.

    It doesn't matter whether the car nannies you or not - you have to be a responsible adult anyway.
     
  19. JeffK

    JeffK Well-Known Member

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    Is that what it says in the manual?... I know their "city braking" function for the last few years only works to 35 mph.
     
  20. chronopc

    chronopc Active Member

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    What's a radio?
     
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