Control Autopilot use of Regen vs Braking



Have an option to use only regen when Autopilot needs to brake, if safe to do so.


When you’re on autopilot or adaptive cruise control, and your car needs to come to a stop (either because there’s a slowing or stopped vehicle in front of you or it’s automatically stopping for a stop light/sign), I notice that the car appears to use the brake calipers in addition to regen braking (above 5 mph).

To increase the lifespan of the friction brakes, I prefer it to only use regen unless the other vehicle is stopping harder than expected.  Many times I’ll disconnect AP so I can manually use regen – meaning I’m starting the deceleration process sooner than the Tesla would.  I understand in my older Model S, it only regens down to about 5 mph so brakes would be required for a complete stop.



(lightly edited by moderator)

Category: Tags: entered 3-Jul-2020


Stupid question perhaps: How do you notice that it uses the brake calipers?
Definitely not a stupid question.  I compare the rate of deceleration when I manually allow the car to come to almost a stop, without using the brake pedal, compared to how quickly it decelerates when it's stopping on autopilot.  The difference would be due to the addition of calipers in helping it slow, since there isn't a greater regen force that's applied.
Another option would be to vary the caliper force as needed like humans do instead of hard clamping. It is disruptive when at a redlight sometimes it brakes hard lets up and brakes hard again.