Stupid Stop

Smart Stop won't help you if you mistake the gas for the brake.

The brake override logic is not intrusive at all. For normal usage (starting on a hill, holding the brakes at a dragstrip while you rev the engine), the brakes are always applied first before you step on the gas.

 

What's it doing exactly on the boat ramp? I can't understand why you'd need to hold gas and brake? It's never once in 25,000 miles affected me in my normal driving situations. If you're touching the brake and the gas at the same time in an auto, aren't you trying to stop or hold it stopped? Not trying to argue, I just can't figure out why you'd need your feet on both pedals simultaneously.

 

Actually 2, that reason ^^, and if you get in a position where your open diff is making you lose power to the wheel that has most traction and you're just spinning then you can either set the e-brake a little or you can press the brake pedal a little to see if that ail help send the power to the wheel that needs it.

I don't want a nanny like that on my truck either, it's just stupid.

 

This is another way to stop the idiots from using more than one floor mat in their car from killing themselves. You've seen the news stories. Throttle gets stuck and person crashes because they couldn't stop the car/turn off the engine (push button vehicles).

They're too stupid to realize that you put the car in neutral and pull over then stop. Who cares if your engine grenades.

 

Toyota already does that automatically. It's called Auto-LSD.

I tried it off the line on wet pavement once (hit the VSC button once to disable Trac and enable Auto-LSD) - when the Auto-LSD engages, it's like a kick in the back.

 

Auto LSD uses the computer and wheel speed sensors to work, so it's complicated, and when i've seen it work (off-road) it's very jerky, when you just use the brake (manually actuated) it's smoother and you have more control over it.

 

When you use the brake, you are braking both the slipping wheel and the wheel with traction, where as auto LSD brakes only the slipping wheel.

Auto LSD doesn't activate in 4lo (at least not from the factory), so where have you seen it work off road?

 

I don't drive with two feet but I do race my truck and to gain power I will hit the brake and gas and get the rpms up for a launch.

Yes boat ramps would be another great example along with hills and off roading.

Exactly:

But as someone mentioned it doesn't kick in unless your above 5 mph. Because I have had to spin my tires and I just turn off the traction control, vsc and stuff with the button?

When im at the boat ramp I don't want to go backwards so I hold the brake and apply throttle to ease my self out without putting to much power, if I use one foot I take the foot of the brake and it will slide back then when you hit the gas your putting power to a truck that getting pulled backwards. Its nice relief to ensure you don't end up at the end of the boat ramp

 

I've only ever heard of people doing this with mechanical LSDs which require a little bit of resistance to send power back over to the other side. I'm fairly certain this is how HMMWVs are meant to be drivin using Torsen diffs at each axle.

 

No the ebrake trick definitely works with open diffs. It pretty much simulates an LSD.

 

If you hold the brakes, then apply the throttle, Smart Stop doesn't intrude. So what's the problem?

Smart Stop's only real function is to allow you to quickly cut the throttle if the gas pedal is stuck. Traditional methods like turning off the ignition or shifting to neutral leave you with no power-assist for the brakes.

 

I do this on my steep driveway when parked. If I want to pull into the garage, I don't want to roll backward & I don't want to goose it forward since the fit it tight in my garage. Right foot on brake, pop into drive, left foot disengages parking brake, left foot on brake, right foot eases onto gas & then left foot off the brake for an easy no-strain drive up the driveway.

Smart stop wouldn't keep me from doing this.

 

Yep, but even though it takes more power to move the truck when you use the brakes instead of traction control it's a smoother application of the braking force, which means that the tire with more grip is less likely to be "snapped" making it lose traction.

In videos, ARB has a good one that demonstrates the traction control off road.

EDIT: this video, starting at 2:40 or so.
http://www.youtube.com/watch?v=YNFacsKnswM

 

I'm wondering if the ABS kill switch mod would disable this so called feature when engaged.

 

The video isn't showing auto LSD, it's showing A-Trac, which is electronically simulating a locker. A-Trac isn't as smooth as a locker, but it will get the vehicle through the obstacle most of the time. Applying brakes manually like you suggested wouldn't have let that Prado past the obstacle.

 

True I did'nt think about power-assist for the brakes good thinking!

Haha glad im not the only one! it feels more secure when I do it that way cause I won't slide back and hit my trash cans and stuff.

 

Gotta love the idiots riding down the road w/ their brake lights on

Guess my poor mans locker trick wont work anymore on new trucks

 

I'm wondering if it's the traction control thats kicking in, instead of SS.

When rolling backwards while in forward gear(drive or 4,3,2,1), something kicks in, not sure what. Whatever it is, it pulses brakes like abs, forcefully enough to stall motor.
Example: when four wheeling, climbing a hill, i didn't quite make it to the top, I released brake pedal, but left in 1st gear(auto), and after traveling five feet backwards, something engaged brakes enough to stall motor and scare the crap out of me.
I can recreate same effect in my driveway, just by letting truck roll backwards while in forward gear. It's very unnerving, it kicks in so hard that it stalls or nearly stalls motor.

 

Off road I use brake and gas at the same time a lot. Never had a problem with the nannies turned off.

 

I believe that's part of the trans deign. My '06 does it coming back down steep inclines you dont make it up. My truck has none of that crazy TC junk, ABS disabled.