Parking brake tried to engage while driving

[strangelove]

I was cruising down 35 here in Austin today when I ham-fisted an attempt to turn on Driver+ and depressed the park button on the stalk for a second. The car lurched like it was under braking and made a grinding sound from the front wheels, and showed an error message that read something like "come to a complete stop to go into park." Thanks Captain Obvious, you've been promoted to Admiral.

I was certainly taken aback. I'll be more careful in the future, but more than anything I figured a software lockout would prevent the car from even attempting to enter park while at 70mph. I haven't had the guts to try it a second time to see if that's what really happened. A forum search didn't turn this up... anyone else want to admit to being this clumsy?

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[Phatman113]

I'm pretty sure it's similar to the Tesla setup. Pressing the 'park' button while driving engages the parking brake (like stomping on the ebrake pedal, or yanking up on the hand actuated ones...)

Kyle (out of spec, YouTube) has done this to break the back end free during his snow drive "tests"

 

[Killer95Stang]

I kinda did the same thing recently where I instinctedly pushed the button instead of pulling down the stock. I did get the error message, but it never tried to apply the brake. Maybe it's speed related or some other set of perameters have to be met. I can see that it should be locked out at any speed that could cause an accident.

 

[strangelove]

I'm pretty sure it's similar to the Tesla setup. Pressing the 'park' button while driving engages the parking brake (like stomping on the ebrake pedal, or yanking up on the hand actuated ones...)

Kyle (out of spec, YouTube) has done this to break the back end free during his snow drive "tests"

Oh, interesting. I have to admit, my curiosity basically dictates that I try it again... though at a lower speed. I find the feature surprising though.

 

[electruck]

This is explicitly called out in the Owner's Manual:

 

[strangelove]

TIL

Asking the forum is more fun than RTFM.

 

[Phatman113]

IIRC it was this video:

Maybe this one:

 

[Oldsmobile_Mike]

"Emergency deceleration". It's in the owner's manual. I ham-fisted it once, as well (hadn't had my coffee yet, meant to hit the wipers). Was on the interstate. Good thing no one was behind me. I should've worn my brown pants.

 

[electruck]

TIL

Asking the forum is more fun than RTFM.

But is it more fun than unexpected emergency braking on I35 in Austin traffic?

 

[strangelove]

But is it more fun than unexpected emergency braking on I35 in Austin traffic?

To be fair, the braking wasn't that abrupt. I was more surprised by the grinding noise it made.

 

[Killer95Stang]

This is explicitly called out in the Owner's Manual:

This explains why it didn't slow down for and only gave me the warning. I didn't hold it down, I just touched it, got the warning and realized the error in my ways. Good to know you can use that as an emergency stop.

 

[Dark-Fx]

That's the ejector button if your passengers are being too loud.

 

[240vPlug]

Yup press and hold. My Nan had a 1965 Dodge Coronet 440 (no it didn't have a 440 ci... 440 meant it was 4 door) it had a 318 single bbl carb. Manual brakes.

I was driving it and the single brake line ruptured. Pedal went to the floor no stopping.

Instead when I needed to stop I held out the parking brake release and used the parking brake pedal as a brake pedal.

This function mimics that ability. In the event there is a brake failure the electric actuator can slow the vehicle. I'm glad Rivian has this feature.

 

[Zoidz]

To be fair, the braking wasn't that abrupt. I was more surprised by the grinding noise it made.

Grinding noise was probably the ABS system pulsing the front wheels to prevent lockup.

 

[Hillbilly]

I kinda did the same thing recently where I instinctedly pushed the button instead of pulling down the stock. I did get the error message, but it never tried to apply the brake. Maybe it's speed related or some other set of perameters have to be met. I can see that it should be locked out at any speed that could cause an accident.

Same.

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