Can you disable the "panic brake stop" ?

that doesn't sound right. correctly working abs should prevent the wheels from locking, even when you hold your foot on the brake as hard as you can

 

can you locate that o/m info? maybe it's an option i don't have. i've heard of hill park assist or something, but not brake assist.

 

The brake assist feature, which provides increased braking when the driver presses the brake pedal, is implemented in the skid control ECU firmware, and I don’t know of a practicable way to disable it.

The pre-collision braking feature, in which the car might apply the brakes on its own based on input from the millimeter wave radar and other sensors, can be disabled using a switch; see “Disabling pre-collision braking,” Owner’s Manual (PDF), page 250.

 

In my experience, behavior of that feature is not as extreme as you describe it, but I agree that it's annoying. Press the pedal quickly but not hard, and the car briefly brakes hard.

 

So it's like insurance for spazes. I would think that's a good thing keep people from rear ending folks I've never noticed it so I don't know if my car doesn't have it My 2010 car that my wife has has every available option solar roof blah blah blah course she drives like herself so she probably doesn't even know if this feature exists

 

I can't imagine being in any Prius and having to stomp on the brakes right smartly going say under 25 miles an hour just take your foot off the brake and steer around the boob or drive in the grass or whatever but I mean it 20 miles an hour even if the brake locks up unless you just have crap laying everywhere in your car to go flying even with all my tools and stuff in here I got one or two items that'll slide to the forward edges of the back seats maybe and that would be about it

 

if my car is equipped with this, i have never experienced it.

i'll have to check the o/m

 

Desciption of the Pre-Collision System starts on page 249 of Owner's Manual. There is an asterik and footnote saying "if equipped". "Brake Assist" is also mentioned. There's a button to disable (screen-grab from page 250):



^ I looked: our 2010 CDN Touring model doesn't have that button, nor radar cruise.

Do you have radar cruise too? Not sure, but wondering if brake assist requires radar cruise.

 

It doesn’t. A sales brochure for 2010 shows that the Star Safety System, including brake assist, was standard on all grades for the U.S. market, but dynamic radar cruise control was available only in an option package.

 

Is it really locking up, or is it just going into full force pavement-grabbing ABS braking? As previously mentioned, it shouldn't really be locking up unless there is an ABS system failure.

This is important to figure out.

Your car is equipped with it. I had several unwanted experiences with it in my first year of Prius ownership, but those experiences recalibrated my braking reflexes. Now it happens only when it is actually appropriate.

Considering that a not insignificant number of drivers just don't push the brake pedal hard enough in certain situations, resulting in collisions that are either avoidable or have less than optimum speed reductions before impact, I don't expect that this feature will getting a disable function.

 

Why did you say the a/c was so loud? Are you running the fan on high all the time?
Have you thought about taking to a dealer, or a shop that specialized in Prius's and have
them check it out?
Or use techstream or similar to check it?

 

i would say it is because i drive so carefully and never have to hit the brakes quickly with force, but o/p said he 'went from slight throttle to very little breaks'. i do that all the time, and it has never happened.

 

Ive never heard of a silent AC system in a car, you got a good point

 

who said the a/c was loud?

 

not sure. couldn't hear over the a/c