TMC is an independent, primarily volunteer organization that relies on ad revenue to cover its operating costs. Please consider whitelisting TMC on your ad blocker and becoming a Supporting Member. For more info: Support TMC

Roll back when Drive engaged

Discussion in 'Canada' started by Nikkin, Jul 3, 2018.

  1. Nikkin

    Nikkin Member

    Joined:
    Dec 11, 2017
    Messages:
    36
    Location:
    Ontario
    Just wondering if anyone else is experiencing this and can maybe help me isolate the issue...

    I've noticed in seemingly random circumstances when the car is parked and I shift from Park to Drive, when I lift off my brake pedal, the car will roll backwards as if on Neutral and rolling down a hill. Whenever this has happened, I'm on a flat parking spot, so not sure why we're rolling backwards.

    If I hit the brake, the car will stop. If I hit the accelerator, the car will move forward, so its a very controllable thing to get around, but its not consistent so when it happens its never expected.

    All it's going to take is one person to park really close behind me and this roll back can end up with me bumping into another car-- albeit at "creep" speeds.

    Is anyone else experiencing this? I'm planning on taking the car into the service centre to have them take a look as well.
     
  2. Buggle

    Buggle Member

    Joined:
    May 16, 2018
    Messages:
    396
    Location:
    Vaughan
    It happens if you have creep set to off. It's not an ICE, so the drivetrain isn't pulling on the wheels slightly, so it will roll slightly if your foot is off the brake. I'm sure wherever you are isn't totally flat, hence the roll. Just keep your foot on the brake till you accelerate.
     
    • Like x 1
  3. P85_DA

    P85_DA Supporting Member

    Joined:
    Apr 25, 2015
    Messages:
    2,551
    Location:
    Chula Vista, CA
  4. Vawlkus

    Vawlkus Member

    Joined:
    Feb 28, 2017
    Messages:
    541
    Location:
    Halifax
    This is also why the brake hold feature was implemented. Press down on the brake firmly, and the brakes will remain engaged until you release them with either the brake or the accelerator.
     
    • Like x 1
  5. jsmay311

    jsmay311 Member

    Joined:
    Apr 22, 2016
    Messages:
    651
    Location:
    Chicago suburbs
    This recent thread discusses something similar: Reverse made my car go forward...

    I'm still personally unclear on how "Vehicle Hold" / brake hold works in relation to when you shift in and out of park. The manual makes no mention of it.

    Can any owners chime in about whether or not Vehicle Hold is engaged automatically when in Park and immediately after shifting out of Park when creep mode is off? (If not, I would think it should be, no?)
     
  6. richyrich

    richyrich Member

    Joined:
    Apr 13, 2018
    Messages:
    91
    Location:
    Ottawa
    Yeah I'd had a couple of rollbacks before I figured this out. With it I don't find any need for creep and it's more relaxing when in stop-start traffic or at lights.
     
    • Like x 1
  7. mrElbe

    mrElbe Active Member

    Joined:
    Aug 17, 2014
    Messages:
    1,486
    Location:
    Stouffville, ON Canada
    Normal operation. Your "flat" parking spot probably was on a slight incline. I personally have no use for the ICE simulated creep function. It wastes power. I am perfectly fine with the "Vehicle Hold" function by pressing on the brake pedal while stopped and in gear.
     
    • Like x 2
  8. realvvk

    realvvk Member

    Joined:
    Feb 8, 2017
    Messages:
    109
    Location:
    Philadelphia
    Perfectly normal. And feels natural to anyone used to driving a manual transmission car. One of the best features of my Tesla is that it combines all the feel and control of manual transmission without the bad part (shifting gears.) I love this because the car is under my control. If I want it to roll backwards, I reduce gas pedal input. If I want it to roll forward, I increase gas pedal input. Perfect!

    Embrace it!
     
    • Like x 2
  9. Anto

    Anto Member

    Joined:
    Jun 10, 2018
    Messages:
    45
    Location:
    Ottawa, Ontario, Canada
    Indeed, I find the same thing. The brake hold feature is amazing, so relaxing at lights!

    To everyone who's wondering: the only time it doesn't hold is if you're shifting into Drive. Every other time you hold the brake to a complete stop it will hold automatically. You should always be holding the brake down when shifting into drive anyway, same as you would on an ICE car.
     
    • Like x 1
  10. Canuck

    Canuck Well-Known Member

    Joined:
    Nov 30, 2013
    Messages:
    6,047
    Location:
    South Surrey, BC
    It depends on the vehicle. In my pre-AP S, even with hill hold, it will let go after a bit. In my 3, it will hold forever.
     
  11. taylortbb

    taylortbb Member

    Joined:
    Jun 28, 2017
    Messages:
    30
    Location:
    Waterloo, Canada
    I wouldn't be so certain that this is due to creep being off. I have creep on (tight parking garage at my apartment) and have experienced the same rollback as OP.

    It's always very slight. The one time I let it roll, rather than hitting the brakes immediately, creep suddenly kicked in after ~6 inches and I started going forward again.

    Makes me think it's actually a software delay in commanding the motor to creep.
     
    • Helpful x 1
  12. Nikkin

    Nikkin Member

    Joined:
    Dec 11, 2017
    Messages:
    36
    Location:
    Ontario
    Exactly. I have creep on and it still rolls back a little sometimes. If its a software delay in engaging creep then its fixable but will likely take time.
     

Share This Page

  • About Us

    Formed in 2006, Tesla Motors Club (TMC) was the first independent online Tesla community. Today it remains the largest and most dynamic community of Tesla enthusiasts. Learn more.
  • Do you value your experience at TMC? Consider becoming a Supporting Member of Tesla Motors Club. As a thank you for your contribution, you'll get nearly no ads in the Community and Groups sections. Additional perks are available depending on the level of contribution. Please visit the Account Upgrades page for more details.


    SUPPORT TMC