Submitted by rdematos on November 16, 2013
I wanted to confirm the behavior of the Model S regenerative braking when it detects wheel slip. The car I currently own allows regen to be set pretty high and gives your the comfort of slowing down with little to no input at the brake pedal. The problem is that if the car detects even the slightest wheel slip, it abruptly disables the regen for about two seconds - launching the car forward and forcing the driver to dramatically increase brake pedal pressure to compensate for the lack of regen, and then to adjust it again when it returns.
Seems like a bug - but according to its manufacturer, it is working to spec. In my opinion, the ABS and regen subsystems could do a better job handing over the braking responsibilities without freaking the driver in the process.
So, as I wait for the lease on my current EV to run out and set my eyes on the Model S, I wonder how Tesla addresses this issue. Does the regen in Model S abruptly shuts down when it detects wheel slip? Do the hydraulic brakes auto compensate for sudden regen changes?
Thank you in advance for the insight into to how this awesome car works!