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Dash Symbol Question

Discussion in 'Model S' started by A2Sirbill, Mar 31, 2017.

  1. A2Sirbill

    A2Sirbill Member

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    From time to time I am seeing a symbol pop up, then goes away after the car is off and comes back on.

    It is a capital letter H inside of a circle then wrapped in parenthesis. It pops up above the power level usage meter on the right hand side of the dash. I see it fairly frequently.

    Anyone Know What This Is For?

    Thanks,

    Bill
     
  2. benjiejr

    benjiejr Technogeekextraordinaire

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    That sounds like the Hill Hold icon
     
  3. Haxster

    Haxster Member

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    Yes, "Hold". The indicator (or the stop lights lit on the display with no brake pedal pushed) indicates that the parking brake is engaged and the car will not roll (even only on a very slight grade or with a gust of strong wind.

    It engages automatically when the car stops and your foot remains on the brake for a moment. Pushing the brake pedal again (or the throttle) will release it and let the car roll.

    This is a really nice feature. Sort of the opposite of the stupid "creep" setting.
     
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  4. benjiejr

    benjiejr Technogeekextraordinaire

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    Took this bad screenshot from a video I made recently... it looks like this:

    upload_2017-3-31_13-31-18.png
     
  5. democappy

    democappy Member

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    I am surprised how poorly hill hold seems to be communicated. I find it to be one of the more useful features and it seems odd that it isn't always explained when folks get their walkthrough when they pick-up their new cars.
     
  6. dhcp

    dhcp Member

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    Hill hold is awesome. I found out about it by accident and now I use it all the time, even at a long red light.
     
  7. somnambule

    somnambule Member

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    #7 somnambule, Mar 31, 2017
    Last edited: Mar 31, 2017
    <pedantic>
    I believe Tesla calls it "vehicle hold", not "hill hold" (which also makes more logical sense as it holds the vehicle in place; the hill isn't going anywhere anyway).
    </pedantic>

    FWIW, if you have creep mode disabled, hold gets activated with relatively little force on the brake pedal after the car comes to a stop. Hold requires a bit more pressure on the brake pedal to engage if you have creep mode on.
     
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  8. whitex

    whitex Active Member

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    When Hill Hold is on, the car will not move when you release the brake unless you either:
    A. Press the accelerator
    B. Press and let go the brake (again)

    Not sure whether it senses any hills, but you can engage Hill Hold any time the cart is stopped by pressing the brake pedal harder.
     
  9. st50maint

    st50maint Member

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    I always assumed the hold was using the regular brakes.
    Is it actually using the parking brake?
     
  10. Haxster

    Haxster Member

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    Well... your assumption is different than my assumption.

    One of us might be right.:)
     
  11. DDD4EV

    DDD4EV Member

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    I also love vehicle hold. It eliminates the necessity for holding your foot on the brake while waiting for a light to change. BUT, when I drive my Prius and come to a stop at a light, I tap the brake and move my foot back to the accelerator pedal. The Prius immediately creeps toward the car a few feet away and reminds me I am not in my Tesla. Same problem occurs when I expect my Prius to brake upon release of the accelerator pedal. Without regenerative braking, I am reminded again that I am driving my Prius. Love regenerative braking also. Usually, I touch the brake only to engage the vehicle hold.
     
  12. wattsup

    wattsup Member

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    Vehicle hold does not use the parking brake -- it's just "auto-hold" using the normal brake.

    When the parking brake engages, you can hear a short mechanical sound of the servo moving it into place. You don't hear this when vehicle hold engages/disengages.
     
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  13. Hugh Mannity

    Hugh Mannity Mediocre Member

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    I think the vehicle hold senses the angle of your car. If you stop on a hill facing upward I find the (H) always presents itself after being stopped for a few seconds.

    If you stop on level ground you have to push the brake pedal hard to engage it.

    FYI my '51 Studebaker has "hill holder" functionality too! Albeit it's a primitive electro-mechanical setup that works off the transmission. Studebaker actually invented it.
     
  14. namlio

    namlio Member

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    I live in the Houston area which is generally flat, so I have rarely seen the 'H', but I stopped at an intersection the other day that was on a slight incline and there it was!

    This reminds me of taking the driving test in the UK (Aberdeen) 25 years ago. Part of the test was to stop on a hill, and there were many steep ones in my area, engage the hand brake, and then show that you could start moving forward without rolling backwards. It requires good coordination between the accelerator, the clutch, and the hand brake. If you roll backwards at all, you fail the test. Other requirements were to execute a three point turn, parallel park, both without touching the curb, and back around a corner while staying within 18" of the curb (I don't know why this was required because I never did this in real life). When I was there, the failure rate on the driving test was over 50%. My how time flies!
     
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  15. benjiejr

    benjiejr Technogeekextraordinaire

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    If we had that test around our area the failure rate would be much higher! Heck, I'm not sure I could pass! lol
     
  16. Nosken

    Nosken Member

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    Two advantages to having hold activated.
    1. When you were stopped at a light or stop sign, it keeps your brake lights on.
    2. It keeps the car with the brakes on, in case you get rear ended. Preventing you from getting pushed to the car in front of you or into the intersection.
     
  17. somnambule

    somnambule Member

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    #17 somnambule, Apr 3, 2017
    Last edited: Apr 3, 2017
    This reminds me... I learned to drive from my dad. His requirement on hill stop-starts was to avoid rolling without using the hand brake. I had to learn to gauge just how much to release the clutch pedal with the left foot (this was on a manual transmission) to avoid rolling back while I moved my right foot from the brake to the accelerator. Having to rely on the hand brake on anything but an extreme slope would draw a joke at my expense :).
     
  18. Haxster

    Haxster Member

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    On mine, it's always active, even on level ground. Just hold your foot on the brake for a second or so. Push the brake again, and it releases.

    On actual hills, there's a message to push the brake pedal again to release. If you push the throttle, it releases anyway (but may stress the brake calipers?).

    One downside to the hold feature is that if you get used to it, go to another car that doesn't have it, forget that it doesn't, and :eek:
     
  19. Hugh Mannity

    Hugh Mannity Mediocre Member

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    Assume you have creep off? I find with creep off the vehicle hold engages far easier.
     
  20. ShockOnT

    ShockOnT Quickish

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    Agreed. I use it pretty much every time I come to a complete stop.
     

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