Toyota's electronic throttle, and..
in [Technical]
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From: Stewart on 27 Mar 2010 01:26 "Tegger" <invalid(a)invalid.inv> wrote in message news:Xns9D46D48D312C4tegger(a)208.90.168.18... > ...just why Sudden Unintended Acceleration is virtually impossible. > > <http://www.popularmechanics.com/automotive/how_to/4347704.html> > > The author does not mention it, but the NHTSA closely regulates the > design > of the electronic throttle and its firmware. It is, by design, not > possible > to "hack" into the firmware in order to modify or disable it. > > -- > Tegger > Now I'm not sure about Toyota, but there was something disturbing about my daughters car, a 2005 Saturn Vue. GM had a recall on the CVT transmissions in these. Of course, since they went through bankruptcy GM believes that they no longer need to honor the recall, but anyway, I will digress..... The dealer replaced the transmission (GM did pay 50%), and for the first few days, the car was fine. About 5 days after bringing the car home from the shop, while in the garage she started the vehicle one morning. The engine raced on it's own, and the speedo was reading about 50 mph even though the car was in park and the pedal wasn't being pressed. She turned it off, and called me in...and I started it up and the same thing happened. I called the dealer and explained what happened. The rep put me on hold, came back about 3 minutes later and told me in no uncertain terms not to drive the car (which I pretty much figured myself, duh), they will pick it up. They were at my house with a tow truck within half an hour, took the car and gave us a rental until another replacement transmission arrived and was installed. I've asked them numerous times what from the transmission would make that happen...some kind of sensor with a feedback into the motor? They would not give me a straight answer on this, but it sure makes me wonder....
From: jim beam on 27 Mar 2010 09:59 On 03/26/2010 10:26 PM, Stewart wrote: > "Tegger"<invalid(a)invalid.inv> wrote in message > news:Xns9D46D48D312C4tegger(a)208.90.168.18... >> ...just why Sudden Unintended Acceleration is virtually impossible. >> >> <http://www.popularmechanics.com/automotive/how_to/4347704.html> >> >> The author does not mention it, but the NHTSA closely regulates the >> design >> of the electronic throttle and its firmware. It is, by design, not >> possible >> to "hack" into the firmware in order to modify or disable it. >> >> -- >> Tegger >> > > Now I'm not sure about Toyota, but there was something disturbing > about my daughters car, a 2005 Saturn Vue. GM had a recall on the CVT > transmissions in these. Of course, since they went through bankruptcy > GM believes that they no longer need to honor the recall, but anyway, > I will digress..... > > The dealer replaced the transmission (GM did pay 50%), and for the > first few days, the car was fine. About 5 days after bringing the car > home from the shop, while in the garage she started the vehicle one > morning. The engine raced on it's own, and the speedo was reading > about 50 mph even though the car was in park and the pedal wasn't > being pressed. She turned it off, and called me in...and I started it > up and the same thing happened. > > I called the dealer and explained what happened. The rep put me on > hold, came back about 3 minutes later and told me in no uncertain > terms not to drive the car (which I pretty much figured myself, duh), > they will pick it up. They were at my house with a tow truck within > half an hour, took the car and gave us a rental until another > replacement transmission arrived and was installed. > > I've asked them numerous times what from the transmission would make > that happen...some kind of sensor with a feedback into the motor? > They would not give me a straight answer on this, but it sure makes me > wonder.... > > > <press_release_keywords> but but but, black box, dangerous, parts suppliers owned by toyota, unattributed smear and bullshit... -- nomina rutrum rutrum
From: jim beam on 27 Mar 2010 10:57 On 03/25/2010 05:53 PM, Tegger wrote: > ...just why Sudden Unintended Acceleration is virtually impossible. > > <http://www.popularmechanics.com/automotive/how_to/4347704.html> good cite. > > The author does not mention it, but the NHTSA closely regulates the design > of the electronic throttle and its firmware. It is, by design, not possible > to "hack" into the firmware in order to modify or disable it. > -- nomina rutrum rutrum
From: chuckcar on 27 Mar 2010 16:32 "Stewart" <gortamus(a)gmail.com> wrote in news:hok4u6$ke2$1(a)news.eternal-september.org: > > "Tegger" <invalid(a)invalid.inv> wrote in message > news:Xns9D46D48D312C4tegger(a)208.90.168.18... >> ...just why Sudden Unintended Acceleration is virtually impossible. > I've asked them numerous times what from the transmission would make > that happen...some kind of sensor with a feedback into the motor? > They would not give me a straight answer on this, but it sure makes me > wonder.... > My wild guess is that you simply were not talking to anyone who actually knew. -- (setq (chuck nil) car(chuck) )
From: Stewart on 27 Mar 2010 16:56
"chuckcar" <chuck(a)nil.car> wrote in message news:Xns9D48A821FC7F4chuck(a)127.0.0.1... > "Stewart" <gortamus(a)gmail.com> wrote in > news:hok4u6$ke2$1(a)news.eternal-september.org: > >> >> "Tegger" <invalid(a)invalid.inv> wrote in message >> news:Xns9D46D48D312C4tegger(a)208.90.168.18... >>> ...just why Sudden Unintended Acceleration is virtually >>> impossible. > >> I've asked them numerous times what from the transmission would >> make >> that happen...some kind of sensor with a feedback into the motor? >> They would not give me a straight answer on this, but it sure makes >> me >> wonder.... >> > My wild guess is that you simply were not talking to anyone who > actually > knew. > > > > > -- > (setq (chuck nil) car(chuck) ) Well, their reactions to the problem were far too quick for me to believe it was just good customer service. The dealer is a good 20-25 mins away, and they were there in 30 from the time I hung up the phone. Even my daughter was saying "wow, they got here quick!", and we had a freebie rental car not long after that. While there may be "failsafe" mechanisms in place for sudden and unwanted acceleration, just what would make the speedometer read at 50 MPH and the engine race while in park that would be part of the transmission? Some kind of speed feedback sensor? I would have to believe that if this happened while driving the vehicle, it could have created a dangerous situation. My phone calls and emails to Saturn have gone unanswered....but I will eventually find an answer. |