OMG parking brake release...duh

[Turbo95max]

I'm not arguing about anything, just pointed out you're incorrect in your statement which I stand by.

Did you even click on the link I provided and read the manual? I don't read where differentiates when it can be used.

It's not just for parking as you stated.

I actually didnt bother looking at the link until you mentioned it again. Its no point in arguing this. All I was trying to say is that it should not be referred to as an "e brake" or "emergency brake" for the reasons I already explained. In the manual its referred to as an electronic parking brake, and the parking brake can be used in an emergency. If the actual purpose of it was meant to be an "emergency brake" it would be referred to as such. Is that a better way of saying it?

 

[bigfootave]

I have a few concerns with the electronic parking brake on my 2019.

1) Is this a separate brake line independent of the rest ? If not then the redundancy of the manual system is a HUGE PLUS.

2) I live in hilly Colorado..Makes me about what happens if the electrical system fails and engine shuts off / will the system be able to engage ?

3) It would have been more of a be if it if ford provided the option to automatically engage the parking brake when in park. It's a no brainer and you can leave it off if you like

 

[FordTechOne]

I have a few concerns with the electronic parking brake on my 2019.

1) Is this a separate brake line independent of the rest ? If not then the redundancy of the manual system is a HUGE PLUS.

2) I live in hilly Colorado..Makes me about what happens if the electrical system fails and engine shuts off / will the system be able to engage ?

3) It would have been more of a be if it if ford provided the option to automatically engage the parking brake when in park. It's a no brainer and you can leave it off if you like

There are no brake lines for the electric parking brake; just 2 wires per side that power each motor.

The system requires electrical power to function. If the vehicle has no electrical power, it needs to be repaired, so you’re not going anywhere regardless.

 

[bigfootave]

There are no brake lines for the electric parking brake; just 2 wires per side that power each motor.

The system requires electrical power to function. If the vehicle has no electrical power, it needs to be repaired, so you’re not going anywhere regardless.

Glad to know it's a separate system. My concern is a sudden loss of electrical power while driving or having to park on a down slope after such event.

 

[Old-Raptor-guy]

Perhaps? That's why I asked it was like an electric line lock.

Electric line lock holds brake pressure as long as it's getting 12v. It sounds like the Raptor version has some sort of mechanism to hold, either way.

The electric parking brake uses a motor on the back of the caliper. It twists or screws the caliper piston out which applies pressure on the pads and thus the rotor.

There have been mechanical versions of this type of caliper for over 30 years, the type that you have to have a tool to engage the piston and screw the piston back in

The ABS module monitors current draw of the motors (amps)
As the caliper clamps down the Amp draw will ramp up and the ABS will shut the motor down. The algorithm is such that amps = lbs of clamping force.

A siezed motor or caliper will have no Ramp up and will turn ABS light on and set a code for it. Can't remember the exact wording but something like "caliper/motor siezed no movement detected"
It does this because the Amps spike instantly vs ramping up over time (about 1.5 sec)
The ABS module must reverse the motor to release. So if battery power is lost, the parking brake stays engaged. (Keeps someone from disconnecting battery and towing vehicle)

Ford is unique in that they have a procedure to allow the owner to put the system in service mode themselves. Most other manufacturers require a pretty sophisticated scan tool (not your basic OBD II tool).