Emergency Ignition Shutoff

[johnnymiz]

All these scenarios, opinions, and diatribes but no one has actually answered the OPs question, which is a simple one....
How do you turn off a pushbutton controlled Jeep engine at speed if you need to? I would lke to know, too.

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[Rhinebeck01]

All these scenarios, opinions, and diatribes but no one has actually answered the OPs question, which is a simple one....
How do you turn off a pushbutton controlled Jeep engine at speed if you need to? I would lke to know, too.

I posted the info earlier in this thread. This info is spot on..

If you are driving along at say below 5 mph and momentary press the Stop/Start button the engine will shut off and you will roll to a stop.

If you are going say 60 mph and momentary press the Stop/Start button the JLU/JL will ignore the button push ... engine stays on and you keep driving along.

Now, if you are going say 50, 60, 70 or whatever mile per hour.... have an emergency of some sort... and press/hold the Stop/Start button in for more then 3 seconds the vehicles engine will shut down and you will roll to a stop.

 

[johnnymiz]

Thank you.....i must have missed it

 

[mtomac]

.

 

[RussJeep1]

I posted the info earlier in this thread. This info is spot on..

If you are driving along at say below 5 mph and momentary press the Stop/Start button the engine will shut off and you will roll to a stop.

If you are going say 60 mph and momentary press the Stop/Start button the JLU/JL will ignore the button push ... engine stays on and you keep driving along.

Now, if you are going say 50, 60, 70 or whatever mile per hour.... have an emergency of some sort... and press/hold the Stop/Start button in for more then 3 seconds the vehicles engine will shut down and you will roll to a stop.

With the understanding that these what if scenarios of both events like cruise control and electronic transmission both failing being extremely rare, your point about pressing and holding the Start/Stop button 3 seconds is well received: people should know it, but again predicated on the very unlikely electronics malfunction that caused your need to turn off the engine in the first place, working with respect to turning off the engine; hence the importance, if we all want to actually "climb down this rabbit hole," of knowing about the manual transmission release lever.

 

[RussJeep1]

All these scenarios, opinions, and diatribes but no one has actually answered the OPs question, which is a simple one....
How do you turn off a pushbutton controlled Jeep engine at speed if you need to? I would lke to know, too.

Johnny: If people haven't answer the OPs question (and they have, see Rhinebeck01's reply) it isn't for failure to comprehend it but ability to look past it to the essential matter: that of an emergency when an out of control engine is engaged with the drive train, and how to disengage the two.

Have an out of control engine when the rig is parked: that's serious, and your query is certainly warranted, but not an emergency, especially with the more important issue of how to get out of the out of control rig emergency nailed down first.

 

[johnnymiz]

Oh, i get you. Ive been driving a looooong time....and quite a few of my vehicles were pieces of shit where things went bad fast.
Last time i had a runaway engine was just a few years ago....
Driving a 69 camaro with a hot 90s LT350 in it. Banging thru the gears the cable stuck....clutch>neutral>ignition off>coast to the side of the road.
If i hadnt turned the igniton off while rolling i wouldve blown the motor.

 

[johnnymiz]

So, i understand the order of things. I just dont like that theyve made ignition and starter one electronic button that you cant really separate.
They tried to make the starter a cool thing like a race setup .... but in a race car you have an ignition switch you flip on and THEN hit the starter button.
Want to shut it down, just flip the switch. A keyed ignition is a similar 2 step process with the key in that you gotta turn the key the extra bit to activate the starter....but the key is primarily the ignition on/off switch.
Here, they took that 2 process fail safe away by making it a complicated electronic switch

 

[Blood Type J+]

I was thinking you could put the transfer case in neutral but going from 2H to 4H to neutral may not be a good idea.

I think transfer case is the standout answer if nothing else works. It's the only control link between the engine and the wheels that can't be counteracted by malfunctioning electronics - but I'm not even sure that's true with the SelecTrac.

 

[RussJeep1]

I think transfer case is the standout answer if nothing else works. It's the only control link between the engine and the wheels that can't be counteracted by malfunctioning electronics - but I'm not even sure that's true with the SelecTrac.

I'm sorry poster. Respectfully there is a better way to disengage the link between the engine and wheels detailed above in the release lever video. My point of comment is not to be pedantic, but rather that you and others should know about this manual fail safe lever.

 

[Blood Type J+]

I'm sorry poster. Respectfully there is a better way to disengage the link between the engine and wheels detailed above in the release lever video. My point of comment is not to be pedantic, but rather that you and others should know about this manual fail safe lever.

That's not going to be a practical maneuver in an emergency situation in a moving vehicle that is refusing to slow down - and what he shows simply defeats auto-park, which may or may not make the transmission responsive to shift lever input, depending on the failure involved.

 

[RussJeep1]

That's not going to be a practical maneuver in an emergency situation in a moving vehicle that is refusing to slow down - and what he shows simply defeats auto-park, which may or may not make the transmission responsive to shift lever input, depending on the failure involved.

Agreed, but your response hits me, maybe incorrectly, as that of an ignorant arm chair warrior who didn't know about a feature of the rig.

"Practical?"

....in an emergency you do what you need to do! Desperation, not logic becomes the order of the day. If you could put your feet through the floors boards and slow down the rig like cartoon character Fred Flintstone did, you'd consider it.

We talk of an extremely rare circumstance: an electronic cruise control failure, and simultaneous electronic transmission control failure. That said, at such a point, the "practicality" you cite flies out the window as the operator has tried all the practical things and they haven't worked: because our JL has become a computer on wheels, and sometimes, although extremely rarely, such devices suffer tandem catastrophic failure.

Personally, I'm not worried about the cruise control failure, and the brakes are designed to be more powerful than the engine in modern vehicles.

But just for giggles, lets drop down this rabbit hole of complete system failure:

It is at that time poster that we resort in life to manual overrides, be it SCRAMing a nuclear reactor getting too close to achieving critical mass (SCRAM: safety control rod axe man)--a manual device, originally somebody with an ax to cut the rope holding the control rods away from the reactor pool,

....or centrifugal force elevator brakes: basically brake pads kept inside a disk by a spring, that when that disk spins too fast (as in an elevator cables failure) the fast spinning disk applies overriding centrifugal force to the brake's springs, to apply friction to the rails in the shaft, to slow the elevator car down, or

the manual park overide cable in a JL Wrangler.

At such times, reaching into your pocket to get out the key fob becomes easy because your legs are fully extended on the brake, you take the physical key out to open the latch cover, and you pull that manual latch!

What you don't do is say to your spouse sitting next to you, when she suggests this maneuver, "now Muffy, that's not practical...better, would you pass me the Grey Poupon."

gees.

 

[old8tora]

our JL has become a computer on wheels

Very well said , @RussJeep1 .

Furthermore , key fobs are antithetical to practicality . Only actual keys are practical .

 

[Blood Type J+]

Agreed, but your response hits me, maybe incorrectly, as that of an ignorant arm chair warrior who didn't know about a feature of the rig.

"Practical?"

....in an emergency you do what you need to do! Desperation, not logic becomes the order of the day. If you could put your feet through the floors boards and slow down the rig like cartoon character Fred Flintstone did, you'd consider it.

We talk of an extremely rare circumstance: an electronic cruise control failure, and simultaneous electronic transmission control failure. That said, at such a point, the "practicality" you cite flies out the window as the operator has tried all the practical things and they haven't worked: because our JL has become a computer on wheels, and sometimes, although extremely rarely, such devices suffer tandem catastrophic failure.

Personally, I'm not worried about the cruise control failure, and the brakes are designed to be more powerful than the engine in modern vehicles.

But just for giggles, lets drop down this rabbit hole of complete system failure:

It is at that time poster that we resort in life to manual overrides, be it SCRAMing a nuclear reactor getting too close to achieving critical mass (SCRAM: safety control rod axe man)--a manual device, originally somebody with an ax to cut the rope holding the control rods away from the reactor pool,

....or centrifugal force elevator brakes: basically brake pads kept inside a disk by a spring, that when that disk spins too fast (as in an elevator cables failure) the fast spinning disk applies overriding centrifugal force to the brake's springs, to apply friction to the rails in the shaft, to slow the elevator car down, or

the manual park overide cable in a JL Wrangler.

At such times, reaching into your pocket to get out the key fob becomes easy because your legs are fully extended on the brake, you take the physical key out to open the latch cover, and you pull that manual latch!

What you don't do is say to your spouse sitting next to you, when she suggests this maneuver, "now Muffy, that's not practical...better, would you pass me the Grey Poupon."

gees.

You don't seem to understand what pulling that cable does. Hint: it doesn't put the Jeep in neutral OR disconnect the engine from the drivetrain.

"...your response hits me, maybe incorrectly, as that of an ignorant arm chair warrior who didn't know about a feature of the rig."

 

[old8tora]

a moving vehicle that is refusing to slow down

One idea is to Not move too fast in the first place ; easier to stop that way , Jeeps are not race cars , ( although I confess I had my JK over 90 mph today , on a open highway ).

Another good idea is to Never use cruise control ; that seems like stupid tesla autopilot .

Key fobs and screens seem like videogames , which divert attention away from actual driving .

In the scenario of a runaway out-of-control Jeep , you better stop it immediately ; repeat , immediately .

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