How does the parking brake operate?

[timk225]

When I press the Park button, I hear something whir into place and stop.

What is happening, and where? I know it's the parking brake. Does it clamp on the rear disc brakes somewhere, or does a piece rotate into position and lock the motor itself, or something else?

 

[TT97]

Is there an "Extra" Parking Brake Step or Not? Weird.....

 

[gilscales]

did a quick google search and came up with this


"Parking brake Electrically actuated parking brake integrated into rear caliper"

Base on the teardown videos we've seen, this statement makes more sense than the other statement from the manual that Kathy quoted, which sort of gave the impression the parking brake was a separate mechanism. It seems with the Model 3 that Tesla has been able to eliminate the extra caliper used for parking, and instead simply locks the wheels with the same calipers used for braking. More parts and cost reduction!

 

[SigNC]

same thing happens on a VW/Audi