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Wait - Tesla braking isn't regenerative?

Discussion in 'Tesla' started by Lee Jay, Nov 24, 2022.

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  1. Zythryn

    Zythryn Senior Member

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    Not quite.
    Regen will slow the car to 3-5 mph.
    The Hold setting will then blend in friction brakes to bring the car to a complete stop.
    I believe ‘roll’ doesn’t blend in the friction breaks, so to come to a complete stop you need to step on the brake.
     
    #81 Zythryn, Jan 30, 2023
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  2. Trollbait

    Trollbait It's a D&D thing

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    And the creep will apply power to keep the car moving at those speeds until the brakes are applied, like the Prius?
     
    #82 Trollbait, Jan 30, 2023
  3. Zythryn

    Zythryn Senior Member

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    Yes, if you like the car to creep forward, that setting will duplicate that behavior.
     
    #83 Zythryn, Jan 30, 2023
  4. Tideland Prius

    Tideland Prius Moderator of the North
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    "Apply brakes when regenerative braking is limited"

    That makes sense but why is that option a toggle switch? What does it do if it's off as in the Bob's screenshot?
     
    #84 Tideland Prius, Feb 4, 2023
  5. Zythryn

    Zythryn Senior Member

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    Under cold or fully charged conditions, regen is limited. As such, the regen strength is less than it normally is.
    If you want consistent behavior from regen, you leave that enabled.
     
    #85 Zythryn, Feb 4, 2023
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  6. bwilson4web

    bwilson4web BMW i3 and Model 3

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    As shown, it is not something I use. When regen is limited, the brake pedal adds friction braking to whatever regen is doing.

    Bob Wilson
     
    #86 bwilson4web, Feb 4, 2023
  7. Tideland Prius

    Tideland Prius Moderator of the North
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    Right I get that. So should it just be hard programmed in? Why would it be an option. If it’s full, why would regen activate? Or does enabling this option mean the car will charge to, say 99.5% instead of 100% (even though it’ll round up to 100 on the batter meter) so give that consistent regen feeling as you said.

    For EV6, it doesn’t regen at 100% but regen kicks in fairly soon. I charged to 100 yesterday. No regen for the first stop sign on my street but regen is back on the next one (uphill).
     
    #87 Tideland Prius, Feb 4, 2023
  8. Trollbait

    Trollbait It's a D&D thing

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    Was this when you were applying the brake?

    The toggle in the Tesla is for behavior with one pedal driving. On, and it will blend in friction brakes with the regen as the accelerator moves through the brake zone. This keeps the braking force constant regardless of SOC. It can be compared to how a Prius Prime in B will bring in engine braking when the battery charge is high.

    Why be able to disable it? Tesla does sell these as performance cars. Some drivers interested in that want more manual control over of the car's functions. It's why VSC can be disabled in many models.
     
    #88 Trollbait, Feb 4, 2023
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  9. bwilson4web

    bwilson4web BMW i3 and Model 3

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    My understanding is it may be useful to knock or wipe off rusty brake disks.

    Bob Wilson
     
    #89 bwilson4web, Feb 4, 2023
  10. dbstoo

    dbstoo Senior Member

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    Why would that be required? Logically, if the brakes are not being engaged then it makes no difference whether the disks have some surface rust on them or not. They will get "wiped" the next time you hit the brakes hard, right?
     
    #90 dbstoo, Feb 4, 2023
  11. fuzzy1

    fuzzy1 Senior Member

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    That hasn't worked very cleanly on my Subarus, past and present, even without any ability for regeneration. Both have experienced serious pitting, from the combination of not being a year-round daily driver, and the region's modern love of winter salt.
     
    #91 fuzzy1, Feb 4, 2023
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