Another runaway Prius???

[spidey07]

You have proof, know something we don't, or a troll?

It's the most logical conclusion. Now he has a documented case of it, AND the dealer told him it wasn't part of the recall.

Money in the bank right there.

 

[TallBill]

http://despair.com/toyota.html

:awe:

 

[Modelworks]

There are some flaws with i2c and CAN as a protocol that make it something I would never use in cars as the only means of controlling the functions without a hell of a lot of redundancy. First it is comprised of a Low and High wire . Either of those breaks and your whole system becomes unstable. Toyota has said that it would have to fail in an unusual way for that to happen, but it shouldn't even be an issue. I would have put redundant wiring to the parts of the car but a mechanic friend said there is only 1 set of wires. The other thing that bothers me about it is that the clock signals can easily be influenced by everything from cell phones to passing a truck using a cb radio. You would have to shield it extremely well. I wouldn't want to be driving and press the brake and the signal not reach the cpu because of a noisy clock signal and during the time it takes to figure out it needs to send the signal again I hit another car. The other things that can occur is a device failing. It is possible for a device to latch onto the line , holding it high and then no other device can use it so no communication occurs, that means nothing works.



The old system was every device in the car uses its own wiring to connect to the cpu , cpu processes the data and distributes it. That wasn't good enough though, someone thought it would be cool to allow every device in the car to talk to every other device . So your lights can tell your radio that they just turned on without the cpu being involved. I see no reason the airbag should be sharing wiring with the door locks. It is one of those things where the 'wouldn't it be cool' group dismissed the 'what if it fails' group . Sure it opens up lots of options that can be done but should they be done. One bad device on the network can bring the whole thing down.

 

[Modelworks]

I see. In that case, I have to wonder why Toyota didn't use a traditional automatic shifter (with a B setting for disabling regenerative braking). With a typical shifter, there's no issue selecting the proper setting, unlike this spring-loaded nonsense .

Drive by wire like planes are fly by wire. You don't have any physical connection to the transmission. It is like pushing a button on your keyboard, the pc decides if it will print the character on the screen or not.

 

[lord_emperor]

Drive by wire like planes are fly by wire. You don't have any physical connection to the transmission. It is like pushing a button on your keyboard, the pc decides if it will print the character on the screen or not.

Aircraft have 3+ redundant wiring channels and computers.

Call me old school but I prefer feeling the gears in my transmission move and the feedback on my throttle and brakes.

 

[Modelworks]

Aircraft have 3+ redundant wiring channels and computers.

Call me old school but I prefer feeling the gears in my transmission move and the feedback on my throttle and brakes.

I started out in the Navy as an aviation electronics tech about the time when they were completing the transition. There were a lot of pilots then that didn't like the idea no matter how redundant it was.

I like manual transmissions myself, but I guess I am in the minority .

 

[Pliablemoose]

Too many balloon boy coincidences

 

[Gunslinger08]

I've never understood these run away car stories. Either throw it into neutral or turn off the ignition. Sure, you might blow up the engine if your accelerator is stuck and you put it in neutral, but it's better than blowing up yourself.

 

[WizKid408]

These cars are refusing to go into neutral. It has been all over the news people.

 

[Rubycon]

Wow they are going to need panic buttons on cars now! :biggrin:

Reminds me of our consoles. We indeed do have panic switches in case a processor acts up doing a performance. Engagement just puts the processor out of the chain and lets the signal through untouched.

What's next? They start putting these up everywhere? Call them Toyota poles.

http://www.youtube.com/watch?v=5H76gElkA94

 

[thescreensavers]

Throwing a Prius into neutral isn't exactly easy. When I have to take it through a car wash is about the only time I do it and it usually takes a couple tries. However, turning it off by pressing and holding the start button is the way to go.

The reason it's so hard is that the shifter is nothing more than a spring loaded momentary switch and neutral is in the middle of the shifter throw.

slapping a knob to the left is hard?



also this. you design and market a car for idiots, don't be surprised when the idiots hurt themselves. it's like making a 9mm fisher price handgun and selling it to retards.

So you mean you have to hold the shifter in the N position or else it springs back? Or am I misunderstanding?

Also, what is the B setting shown above?

It's not exactly hard, but if you go up or down ever so slightly from neutral, but not all the way to reverse or drive the car doesn't shift at all. All I know is that it usually takes me a couple of tries all the while the guy at the car wash has engaged the rollers and I'm fiddling trying to get it out of drive and into neutral.

Yeah, that dot is the "home" position. You push it to whatever you want the car to do and then release and the shifter springs back to "home".

EDIT: "B" disengages the regenerative braking.

http://www.youtube.com/watch?v=II_03lbr-Jw

It does not seem so hard.

 

[Kaervak]

Interesting how all these cars are flaking out at roughly the same time. Anyway, throttle cables FTW!

 

[PottedMeat]

im thinking poorly written / debugged software, the accelerator pedal is just 2 hall sensors with a shielded cable directly connected to the HV ECU

AVC looks like point to point differential
CAN
and
BEAN - loop topology

every ecu has it's own set of sensors and they talk to back and forth, it can't be easy to find all the cases where data goes wrong.

 

[Modelworks]

I've never understood these run away car stories. Either throw it into neutral or turn off the ignition. Sure, you might blow up the engine if your accelerator is stuck and you put it in neutral, but it's better than blowing up yourself.

Pretend your mouse is the shifter or accelerator on these cars, now unplug it from the pc. Try clicking some links.

 

[CPA]

I'm really not surprised that this idiot didn't know about neutral. I'm now certain that 9/10 drivers are absolutely fucking retarded.

According to what I heard, the Prius uses an electronic shift sensor that will not let a driver shift into neutral while driving.

 

[Rubycon]

Pretend your mouse is the shifter or accelerator on these cars, now unplug it from the pc. Try clicking some links.

I guess everyone needs to learn CLI!

Won't a modern day car just bounce off the rev limiter if the throttle position is wide open with the transmission in neutral?

 

[thescreensavers]

According to what I heard, the Prius uses an electronic shift sensor that will not let a driver shift into neutral while driving.

^ lul what

 

[Kaervak]

I guess everyone needs to learn CLI!

Won't a modern day car just bounce off the rev limiter if the throttle position is wide open with the transmission in neutral?

My eleven year old Saturn will bounce off the rev limiter in neutral, I'd be amazed if newer cars didn't do the same.

 

[Modelworks]

Wow they are going to need panic buttons on cars now! :biggrin:

Reminds me of our consoles. We indeed do have panic switches in case a processor acts up doing a performance. Engagement just puts the processor out of the chain and lets the signal through untouched.

What's next? They start putting these up everywhere? Call them Toyota poles.

http://www.youtube.com/watch?v=5H76gElkA94

I think if I had a prius right now I would install a toggle switch between the motor power and the battery !

 

[TheWart]

I think if I had a prius right now I would install a toggle switch between the motor power and the battery !

I would just install a giant parachute like the space shuttle.

 

[Modelworks]

I guess everyone needs to learn CLI!

Won't a modern day car just bounce off the rev limiter if the throttle position is wide open with the transmission in neutral?

It will on most. The problem is getting the Prius to shift to neutral. It does all the shifting through actuators.

 

[Eli]

http://www.youtube.com/watch?v=II_03lbr-Jw

It does not seem so hard.

LOL

"AHHHHHHHHHH!"

lol

 

[Rubycon]

I think if I had a prius right now I would install a toggle switch between the motor power and the battery !

Just make sure it's not like the broken cancellation button!

http://www.youtube.com/watch?v=ulKwhhFOkgk

 

[FelixDeCat]

Hopefully this is yet a another nail in the coffin of driving by microchip. The government should force stubborn automakers to return to the safe method of using cables. As it is, Toyota is facing a potential $3 Billion dollar payout to people whose cars are becomming worthless because of this "technology".

 

[MJinZ]

Wonder if any Toyota engineers will be committing Seppuku in the coming months...

Especially with that retarded Prius shift mechanism.