Pushing Engine On/Off While Moving

[Reddirocket27]

So, a guy was thinking...

What happens if you're driving alone at a nice pace and you press the Engine on/off button? Likewise, what if you hit a door lock/unlock button on the fob in your pocket?

Would it register that you're moving and ignore the commands or shut the engine off like you turned the key? Or could the doors lock and unlock randomly?

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[Vlad Soare]

Theoretically the start button should not react at all to a single push while the car is moving, but it should still turn the engine off it you held it down for several seconds. I can't remember where I read that, though.
But I don't have the guts to test it myself.

 

[Cruizer]

I can confirm the start button will turn off the motor while driving. It didn't require holding it down. It did start it back up though while still moving.

 

[Vlad Soare]

I learned something today.

Speaking of this, a few years ago I was offered a ride in an Audi A6, and one of the first things to catch my eye was the start button - specifically, its location.

Now, that's practically inviting the passenger to push it, just to see what happens. I don't know many people who could resist the urge to push it. I know I had a very hard time resisting.

 

[Michael_vroomvroom]

I can confirm the start button will turn off the motor while driving. It didn't require holding it down. It did start it back up though while still moving.

Strange. That was not my experience yesterday when I tried to turn the engine off/on for a quick restart to see if it got rid of the engine malfunction warning I got, as I thought it may be due simply to me coasting for a long time in neutral (https://www.mustang6g.com/forums/th...-got-a-power-train-malfunction-wrench.158743/). Ended up having to pull over to the side and stop first.

My car is also a 2020, so not related to that I guess. Could be related to manual/auto (not sure what your's is. Mine is manual), the speed I was rolling at (mine was not fast, but it was slightly above 5-7 mph I think), or the engine check alert of course.

Most sense imo would be speed related: above a few mph, disable engine stop button.

Stupid idea of mine anyway to try stop/start at speed anyway, so the "nanny" saved me from
doing something stupid there.

 

[moose13]

I can confirm the start button will turn off the motor while driving. It didn't require holding it down. It did start it back up though while still moving.

What trans was this with? I can shut off the engine in my 6MT while moving, but only below ~15 mph.

 

[Cruizer]

What trans was this with? I can shut off the engine in my 6MT while moving, but only below ~15 mph.

I have an automatic and I was in drive. Hit the button and the engine cut off. Weird thing was everything else appeared to be on still. Hit the button again and engine turned back on. I kind of wish they had put it closer to the column and away from the other controls.

 

[moose13]

I have an automatic and I was in drive. Hit the button and the engine cut off. Weird thing was everything else appeared to be on still. Hit the button again and engine turned back on. I kind of wish they had put it closer to the column and away from the other controls.

Weird, I wonder why there would be a failsafe for only the manuals. FWIW, the power steering and brakes cut out pretty quickly when you do this, because it goes straight to off instead of accessory power (which it sounds like what yours did).

 

[shogun32]

question is can you bump start the car?

 

[moose13]

question is can you bump start the car?

I've seen it done with many push-button manuals, but never a Mustang. It should work, but haven't tried it myself.

 

[celica0774]

What trans was this with? I can shut off the engine in my 6MT while moving, but only below ~15 mph.

I accidentally bumped the button and shut off my 2020 GT 6MT cruising at about 45mph. Managed to coast it to a parking lot while I figured out what happened and how to restart. Needed to depress the clutch and press the button, just like from a standstill.

I researched some of those start button covers to prevent it, but was unsatisfied with how they just stick on. I imagine the darn thing falling off in the summer heat of a parked car.
https://www.amazon.com/Bonbo-Engine-Button-Switch-Mustang/dp/B0855QMSVD

 

[Zelek]

Probably the same thing that happens when you shift one of the automatics into reverse while going forward. You keep going forward, your rear camera turns on, and nothing else happens. They idiot proof these cars because well..... people are stupid. The button won't do anything above a certain speed.

I don't even see how someone can accidentally press it while driving. There's nothing even near that area where your hand needs to go.

 

[shogun32]

people are stupid.

or it could be the passenger is 'entertaining' the driver while in motion and bumps something with their arm or shoulder. I wonder what the slide for this feature said on it...

 

[ORRadtech]

I can confirm the start button will turn off the motor while driving. It didn't require holding it down. It did start it back up though while still moving.

It restarted without pushing the brakes?

 

[shogun32]

It restarted without pushing the brakes?

not sure why it would. That is a lockout for shifting out of park.

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