SomeJoe7777
Marginally-Known Member
On the model 3 it’s not the motors that “lock up” in hold mode. It’s the brakes that are actuated by the master cylinder. When my car comes to a stop with hold mode, I can visually see the brake pedal move inward and when I touch the gas it releases. The same operation could be implements on older model S/X easily since the master cylinders all have automation built in for emergency braking/autopilot
You need the PMSR motor to be able to regen down to 0 MPH where the brakes can then be actuated. Pre-Raven Model S/X does not have the PMSR motor, they use induction motors only.