acceleration over uneven road surface while braking

And you just discovered this?

Just out of curiosity, what color is the sky in that world you live in?

 

No they won't because it's not cause by slingshot mechanism and it's not accelaration. It was a pause in the braking action only making you feel like it was acceleration. the car was still slowing down but at a sudden slower rate of deceleration for a split second.

The split second was reduced by software to almost nil. My Prius was purchased after the fix but I've still experienced similar feeling during a bump on the road while I was braking before a red light. The front wheels were momentarily airborn and it feels like the brakes failed. But as soon as the tires hit the ground again, the brake feeling came right back.

I don't think this is only affecting the Prius. It was reported that it affects all cars with anti-lock brakes to different degrees. The Prius had this problem more noticable and it was fixed. All cars have design flaws and if the flaws are not serious and got fixed, they don't fall into the category of lemons.

I think you'll do better to enter into the lemon slingshot competition, than spreading unscientific rumours like this.

 

No but it looks like you joined in September 2009 so if you bought your Prius before February, there is a chance you did not get SSC-A0B applied. If you'll take your Prius to the Toyota Service Center, they'll put it on without a charge. BTW, we had one case of a Prius that didn't get the patch so it is perfectly OK to ask the service writer to have a technician check the brake software version. Bring us the identifier and we can check to see that you got the right one.

GOOD LUCK!
Bob Wilson

 

WOW sounds like it's time to junk the car. I'll give you $1000 cash right now for it.

 

This is a forum, it's usual to get answers to a post.

And having the brake fixed, if you feel is not ok, just get it to the dealer again to get it done properly.
Edit: seen you have done it before. In that were the case for me, I would go back until problem fixed, because on thousands of other cars the issue has been resolved. If there is another annoying fault they should also find it and solve.

 

Are you able to replicate the problem on demand and if so could you post a video of the issue?

I assume you have taken your Prius to move than one dealer for resolution? What has been their explanation and/or attempted resolution?

Unfortunately, you are going to be met with sceptism on this board as it has seen it's fair share of owners either disapointed with their purchase, unable to make the payments and trying to find an 'out' or just plain trolls.

 

Sorry, I'm not responding to you but just clarifying my comment of "unscientific rumours" to the rest of the Forum members. So please do not read my response, Mr. Banks.

By "unscientific rumours" I mean it's NOT a "slingshot" mechanism, and it's NOT "acceleration".

This forum is fun

 

Mr Banks, This is a tough group and sometimes not very helpful. Slinghot acceleration has also been documented in other cars.

 

Are you able to reproduce this at will?

The reason I ask is I have an accelerometer that can document the effect:

Send me a PM with your address and we can document what is going on.

Does it happen at any fixed spot? If so, let us know a Google map identifier and we'll use "Street View" to document the road surface.

What I'm proposing is gathering engineering data and documenting the problem. Having empirical evidence goes a long way when filing a formal complaint.

Bob Wilson

 

Just show a video of your car speeding up with the brakes applied.

So you brake at say 30 mph, and suddenly you are going what, 35 mph?

 

Double post?
http://priuschat.com/forums/newbie-...n-over-uneven-road-surface-while-braking.html