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Auto Pilot Safety Tip

Discussion in 'Model S: Driving Dynamics' started by ZERO260, Dec 18, 2017.

  1. ZERO260

    ZERO260 Member

    May 22, 2016
    Waldorf MD
    I enjoy AP but freak out when a car in front of me is stopped at a light and I am going at a high rate of speed. I find it stops to abruptly. Going 50 miles per hour waiting for it to slow down 500 feet away (radar engagement) is scary. I have started using the stalk to drop the speed from maybe 50 down to 40 mph in 5 mph increments. This is a little more comforting.
  2. kavyboy

    kavyboy Member

    Jan 13, 2016
    Spring, TX
    It's not even guaranteed to notice stopped cars. I believe it says so in the owner's manual. Stopping for non-moving cars is exclusively the responsibility of the driver. If it stops, then that's a bonus, but it is not to be relied upon under any circumstance.
    • Like x 2
    • Informative x 1
  3. SomeJoe7777

    SomeJoe7777 Marginally-Known Member

    Mar 28, 2015
    Houston, TX
    Don't do that. The system is not designed to slow down or stop for non-moving vehicles. It may do so under some conditions, but no guarantee.

    Also see: 3 day old import P85D crashed while using TACC
    • Like x 2
  4. brkaus

    brkaus Well-Known Member

    Jul 8, 2014
    Austin, TX
    I do same with the speed stalk. But also hover foot over the brake.

    I know of several cases where the car didn’t stop. It may wait too long for stopped cars and be unable to stop in time, esp if there is a path around the side it thinks you may use.
    • Helpful x 1
  5. d21mike

    d21mike Member

    Aug 28, 2017
    Torrance, CA 90503
    I find that if it picks it up in the IC "after" the car is stopped it does not reliably stop for it. But if it picks it "before" the car is stopped it seems to stop as expected. Also, if "after" I think it works if my speed is below a certain speed (not sure what it is) so slowing down with the stick would certainly help.
    • Like x 1
  6. scottf200

    scottf200 Active Member

    Feb 3, 2013
    Chicagoland ModelX S603
    I was on an AP1 X and just went to an AP2.0 car and it works the same way. I originally planed on an AP2.5 car that has a different radar (longer range ... HW2.5 capabilities ). Maybe they will get the vision interpretation better to back up the radar so it will stop. After all even AP2.0 cars are supposed to support Full Self-Driving (FSD).

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