regenerated breaks when on Autopilot or Cruise control

[Paul1]

Does anyone know how if regenerated breaks is what Tesla uses when on Auto Pilot or Cruise Control? Reason why I ask is, I have noticed often time when I am on Autopilot or Cruise control and if the car needs to slow down due to traffic, my brake peddle gets automatically presses as if I am breaking manually? So does the Tesla's not use the regenerated breaks at that time and only used when you lift your foot off the accelerator?

Thanks,
Paul S.

 

[nate704]

I think both AP and FSD use hybrid (combination of both brakes and regen) when the car needs to stop quick. They use regen braking only when the car can slow down gradually.

 

[BitJam]

Does anyone know how if regenerated breaks is what Tesla uses when on Auto Pilot or Cruise Control? Reason why I ask is, I have noticed often time when I am on Autopilot or Cruise control and if the car needs to slow down due to traffic, my brake peddle gets automatically presses as if I am breaking manually? So does the Tesla's not use the regenerated breaks at that time and only used when you lift your foot off the accelerator?

You can glance at the horizontal regen bar near the top quarter of the touchscreen. A green bar from the center extending left indicates regenerative braking. AFAIK, a gray bar past that indicates friction brakes. What I've noticed is that even though the brake pedal moves when AP slows the car down, it uses mostly/all regen until it needs to stop faster than the regen can manage.

Green Bar / brake usage

When I see a green bar I know Tesla is reducing the speed and regenerating the power to the battery. Sorry for dumb question; To reduce the speed, does it use brakes or reduce the motor speed? If it’s using brakes, Over time, too much of green bar can wear the brakes? Thanks

teslamotorsclub.com

Having AP use as much regen as possible makes sense since Tesla is fanatical about maximizing efficiency and range.