Brake Assist - Panic Stop (Tire Pressure)

[JerseyMike]

That's not brake assist kicking in, that's your Vehicle Stability Control. If it's kicking in when you are not skidding then you need to have a Zero Point Calibration done. This is common when suspension parameters have been modified, such as lifting.

It definitely was the panic assist. Couldn't have been the VSC as it was switched off at the time. Additionally, the panic assist has a VERY different feel to it than the VSC. I've become pretty familiar with both and I'm positive it was the assist.

 

[1engineer]

It definitely was the panic assist. Couldn't have been the VSC as it was switched off at the time. Additionally, the panic assist has a VERY different feel to it than the VSC. I've become pretty familiar with both and I'm positive it was the assist.

The absolute only way to activate brake assist is by hitting the brake extremely quick, as in a panic situation. Slow or steady modulation will not actuate the assist. I have tested it numerous times and the results are in a post I did from several years back. Sure, if you stabbed the brakes then it would be brake assist but no other way. Also, even with VSC "off" ABS is always on. You used "modulate" not "stabbed."

 

[JerseyMike]

The absolute only way to activate brake assist is by hitting the brake extremely quick, as in a panic situation. Slow or steady modulation will not actuate the assist. I have tested it numerous times and the results are in a post I did from several years back. Sure, if you stabbed the brakes then it would be brake assist but no other way. Also, even with VSC "off" ABS is always on. You used "modulate" not "stabbed."

It's more like a feather-pump-pump-PUMP-feather. The harder pump and ensuing acceleration (with the other foot) actually initiates the skid. I wouldn't call it a "stab" so much as a slightly harder and faster pump than the two previous ones. I consider modulation to encompass the whole range and combination of presses - fast, slow, hard, soft - while your foot continues applying slight pressure to the pedal (or lever if we're talking bikes). This would actually include "stabs" as long as you don't completely let off the brake on the following upstroke.

 

[pitstain]

less than 5 weeks of owning my TRDP, discovered brake assist by random chance in NJ traffic the other day.

 

[e60ral]

It's more like a feather-pump-pump-PUMP-feather. The harder pump and ensuing acceleration (with the other foot) actually initiates the skid. I wouldn't call it a "stab" so much as a slightly harder and faster pump than the two previous ones. I consider modulation to encompass the whole range and combination of presses - fast, slow, hard, soft - while your foot continues applying slight pressure to the pedal (or lever if we're talking bikes). This would actually include "stabs" as long as you don't completely let off the brake on the following upstroke.

you are describing absolutely awful brake modulation, you should not be stabbing them hard enough for brake assist

i'd strongly recommend taking a performance driving class or something, because you have learned some really terrible habits that you need professional help to fix

 

[TK-422]

less than 5 weeks of owning my TRDP, discovered brake assist by random chance in NJ traffic the other day.

That sums it up perfectly.

 

[00Sebby]

you are describing absolutely awful brake modulation, you should not be stabbing them hard enough for brake assist

i'd strongly recommend taking a performance driving class or something, because you have learned some really terrible habits that you need professional help to fix

I totally agree with [MENTION=113833]e60ral[/MENTION] on this one. You want to scrub your speed prior to entering the curve, basically coast or maintain smooth brake pressure through the curve, then reaccelerate as you exit. Modulating brakes in a curve at higher speeds is at best uncomfortable and at worst a recipe for disaster. Especially, in the snow. You want a smooth, steady state during the curve either coasting or constant brake pressure. Any change and you will slide or kick in the stability control. But none of this has anything to do with the Panic Assist.

 

[00Sebby]

I activated mine yesterday when a wasp hit the mirror, deflecting onto my leg and into my seat. As I'm terrified of wasps and hornets, my first reaction is to get off the road and put distance between me and the threat. Needless to say I got some looks from people standing outside a nearby restaurant. :biggrin1:

 

[2nd Chance]

I activated mine yesterday when a wasp hit the mirror, deflecting onto my leg and into my seat. As I'm terrified of wasps and hornets, my first reaction is to get off the road and put distance between me and the threat. Needless to say I got some looks from people standing outside a nearby restaurant. :biggrin1:

On last Sunday's mountain bike ride I got stung by a bee on my tongue. Let me tell you at first I was mad, then I was like this freaking hurt and then where the hell is my benadryl. 4 Benadryl later I started feeling normal again.

So needless to say I am with you on that one.

 

[mybabydaddy]

less than 5 weeks of owning my TRDP, discovered brake assist by random chance in NJ traffic the other day.

^^^^Hahahahaha.... Yep.


2014 TEP w/ KDSS / Bilstein 5100s (front at 1.75) / Cornfed 1 inch rear spacers / 265/70 Nitto TG G2s / FN Cntrsteer Type X / RCI Front skid / Yakima Cross bars / NFab Steps

 

[00Sebby]

On last Sunday's mountain bike ride I got stung by a bee on my tongue. Let me tell you at first I was mad, then I was like this freaking hurt and then where the hell is my benadryl. 4 Benadryl later I started feeling normal again.

So needless to say I am with you on that one.

My worst one driving was on a mountain road in my Miata with the top down. One of those big, early-spring, queen yellow jackets hit the passenger mirror and pasted itself right in front of my ear. Severe pain and a few minutes later the side of my face and mouth was numb, like going to the dentist. I'm not allergic but it was enough to make me turn back towards town just in case. Interestingly enough, I stopped VERY quickly and rolled into the grass. No "assist" drama from the Miata.:thumb:

 

[1000MPH]

Left foot braking? All the cool kids are doing it.
http://youtu.be/BMEqOGejlrw

'cept it doesn't work with 5 star safety system. "...Another feature commonly known as brake-override technology will be added to all Toyota, Lexus and Scion models by the end of 2010. This braking-system enhancement will automatically reduce engine power when the brake pedal and the accelerator pedal are applied simultaneously under certain driving conditions. Many of the vehicles currently at Toyota dealership already include brake override as standard equipment.
"

 

[00Sebby]

Left foot braking? All the cool kids are doing it.
http://youtu.be/BMEqOGejlrw

'cept it doesn't work with 5 star safety system. "...Another feature commonly known as brake-override technology will be added to all Toyota, Lexus and Scion models by the end of 2010. This braking-system enhancement will automatically reduce engine power when the brake pedal and the accelerator pedal are applied simultaneously under certain driving conditions. Many of the vehicles currently at Toyota dealership already include brake override as standard equipment.
"

Yep, racing requires using all the tools. On tight autocross corners I will use the brakes to bring the back end around a bit to be better positioned for the exit. But I'm using my right foot since I have to work the clutch with the left. Wouldn't do it in the snow unless I'm just playing around and usually it would be the go pedal inducing the fun in the snow.

 

[1engineer]

On last Sunday's mountain bike ride I got stung by a bee on my tongue. Let me tell you at first I was mad, then I was like this freaking hurt and then where the hell is my benadryl. 4 Benadryl later I started feeling normal again.

So needless to say I am with you on that one.

I only ride on trails and some of my riding shirts are loose. Back in late May me and a white face hornet decided to occupy the same space at the same time on a trail. I was descending on a longish (maybe 100 ft) technical rocky section. You know, the kind where your butt is behind the seat and takes a bit of concentration. Anyway, the hornet decided to fly up my sleeve, proceeded to sting me six times in the arm pit and me not able to do anything until I got off that section. It hurt to say the least although I was quite proud I maintained enough concentration to keep from wrecking and breaking something. I got to the bottom and jumped off my bike, threw it on the ground, threw my Camelbak, ripped off my helmet and proceeded to tear my shirt off, all in about 3 seconds. My buddy looked at me like I was crazy until he saw the welts, swelling and redness in my arm pit area. That was not fun.

So far I have been lucky that all the bugs I swallow when riding (beetles, moths, gnats, etc) have not been bees!

BTW my bike nose dives under braking too....

 

[pcrdude]

Riding the FJR, open visor, and hit a bee with my face. Sucker stung me like I did something wrong to him!

 

[2nd Chance]

I only ride on trails and some of my riding shirts are loose. Back in late May me and a white face hornet decided to occupy the same space at the same time on a trail. I was descending on a longish (maybe 100 ft) technical rocky section. You know, the kind where your butt is behind the seat and takes a bit of concentration. Anyway, the hornet decided to fly up my sleeve, proceeded to sting me six times in the arm pit and me not able to do anything until I got off that section. It hurt to say the least although I was quite proud I maintained enough concentration to keep from wrecking and breaking something. I got to the bottom and jumped off my bike, threw it on the ground, threw my Camelbak, ripped off my helmet and proceeded to tear my shirt off, all in about 3 seconds. My buddy looked at me like I was crazy until he saw the welts, swelling and redness in my arm pit area. That was not fun.

So far I have been lucky that all the bugs I swallow when riding (beetles, moths, gnats, etc) have not been bees!

BTW my bike nose dives under braking too....

Holy crap that's incredible that you didn't bail. Me...I would have tried to do the same but not sure if I could have stuck it out like you did.

Riding the FJR, open visor, and hit a bee with my face. Sucker stung me like I did something wrong to him!

oh I had the exact same feeling. What the heck did I do to you all I was doing was trying to spit you back out of my mouth.

 

[e60ral]

100% convinced that anyone who activates the panic stop and doesn't think they were applying the brake in a panic-y way needs to go take some driving lessons

 

[BlackWorksInc]

It doesn't help that the 4Runner has typically "soft" feeling brakes so unconsciously you can over apply them easily.

 

[e60ral]

right, and it took me a couple weeks to adjust to these coming from my very firm BMW pedals

but when i accidentally hit the brakes too hard i was able to recognize that i was braking poorly, i was able to connect the cause and effect

 

[00Sebby]

100% convinced that anyone who activates the panic stop and doesn't think they were applying the brake in a panic-y way needs to go take some driving lessons

I think most of us realize we are doing the quick transition from gas to brake to activate this feature. The 4Runner's over-amplified reaction is what we are complaining about. It's a safety feature aimed at the lowest common denominator of driver... I get it. Some people need this type of technology and even us who consider ourselves attentive drivers may have benefited once or twice.

I'm only comparing the 4Runner to my 30+ vehicles I have owned and hundreds of others I have driven over the past 37 years. Realize I rent vehicles almost on a weekly basis - new, various makes and types. This is the only vehicle I have driven that reacts this way. I'm guessing my driving style is consistently the same. Again I'm used to it but I don't like it. I probably wouldn't like a Mercedes or Tesla with all the nanny crap on them either.


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