Never heard of a Nissan with those issues, must be a Toyota thing.
Bizarre Behavior (Wife Spooked)
- Thread starter MaximaGuy
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Take it to the dealer & tell them the scenario. They will pull all the data from the event data recorder & sent it to Toyota Corporate for the engineering department to look at. The event data recorder will have ever sensor input stored frame by frame.
Bizarre indeed. Take the car to the dealer, hopefully it's something mechanical like transmission.
If that doesn't help you should set it on fire or stone it to death, depending on religion you practice. If you are an atheist then there is possibly this car's ECU is under occasional alien control.
Mind, Toyotas are nearly impossible to kill. May God help you.
If that doesn't help you should set it on fire or stone it to death, depending on religion you practice. If you are an atheist then there is possibly this car's ECU is under occasional alien control.
Mind, Toyotas are nearly impossible to kill. May God help you.
Originally Posted By: mehullica
Take it to the dealer & tell them the scenario. They will pull all the data from the event data recorder & sent it to Toyota Corporate for the engineering department to look at. The event data recorder will have ever sensor input stored frame by frame.
They won't find any problem.
Even if they find a problem, they still won't find a problem.
Toyota have had a lot of high-profile practice in not finding this kind of problem.
Take it to the dealer & tell them the scenario. They will pull all the data from the event data recorder & sent it to Toyota Corporate for the engineering department to look at. The event data recorder will have ever sensor input stored frame by frame.
They won't find any problem.
Even if they find a problem, they still won't find a problem.
Toyota have had a lot of high-profile practice in not finding this kind of problem.
Originally Posted By: chrisri
Bizarre indeed. Take the car to the dealer, hopefully it's something mechanical like transmission.
If that doesn't help you should set it on fire or stone it to death, depending on religion you practice. If you are an atheist then there is possibly this car's ECU is under occasional alien control.
Mind, Toyotas are nearly impossible to kill. May God help you.
Could be another software bug (Neo-Demon).
Or something implausible to do with carpets.
Rubber-floormat rebound syndrome?
Bizarre indeed. Take the car to the dealer, hopefully it's something mechanical like transmission.
If that doesn't help you should set it on fire or stone it to death, depending on religion you practice. If you are an atheist then there is possibly this car's ECU is under occasional alien control.
Mind, Toyotas are nearly impossible to kill. May God help you.
Could be another software bug (Neo-Demon).
Or something implausible to do with carpets.
Rubber-floormat rebound syndrome?
Originally Posted By: Vikas
Think logically. Foot on the brake; car is still rolling backward on a flat road; gun the accelerator; vehicle scoots forward;
Physics tells you that it is not possible to have all the three things true at the same time.
Nice physics, obviously one behind the wheel isn't using both feet on a daily basis - she obviously took her leg off the brakes and then accelerate the vehicle.
Think logically. Foot on the brake; car is still rolling backward on a flat road; gun the accelerator; vehicle scoots forward;
Physics tells you that it is not possible to have all the three things true at the same time.
Nice physics, obviously one behind the wheel isn't using both feet on a daily basis - she obviously took her leg off the brakes and then accelerate the vehicle.
Get it checked out.
Had my brake pedal go to the floor while driving my E500 in the Fall. Complete brake failure, alarms going off like 4th of July on dash saying brake failure, and no brake power at all. Luckily could coast to a stop. Brakes then worked fine. Dealer says couldn't find anything wrong with it, and that problem was probably that I hadn't changed brake fluid for 3 years. Not saying this is same as your issue, but . . .
Most didn't believe me. Now i have a car which I'm hesitant to put my kids in. My daughter was in car when this happened, and won't get in it again. If dealer can't find problem, trade it in to that dealer.
I'm now much more of a believer in some of these car stories that sound crazy at first glance.
Had my brake pedal go to the floor while driving my E500 in the Fall. Complete brake failure, alarms going off like 4th of July on dash saying brake failure, and no brake power at all. Luckily could coast to a stop. Brakes then worked fine. Dealer says couldn't find anything wrong with it, and that problem was probably that I hadn't changed brake fluid for 3 years. Not saying this is same as your issue, but . . .
Most didn't believe me. Now i have a car which I'm hesitant to put my kids in. My daughter was in car when this happened, and won't get in it again. If dealer can't find problem, trade it in to that dealer.
I'm now much more of a believer in some of these car stories that sound crazy at first glance.
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I experienced this sensation few times when the car beside me started to creep forward. Feels exactly like OP described.
Originally Posted By: mehullica
Take it to the dealer & tell them the scenario. They will pull all the data from the event data recorder & sent it to Toyota Corporate for the engineering department to look at. The event data recorder will have ever sensor input stored frame by frame.
An event data recorder "saves" stuff right before an actual event like the airbag going off. Then you have the last ~5 seconds of speed, decelleration, etc.
In this car, nothing happened, so the data recorder knows nothing as well.
My camry (same floorpan) had a master cylinder go out but it was nowhere near this dramatic. Just took an extra inch of the pedal, once. You could also have had a brake pad hang up from rust on its ears then "pop loose" which takes a lot of fluid and sinks the pedal... which then firms up again.
Take it to the dealer & tell them the scenario. They will pull all the data from the event data recorder & sent it to Toyota Corporate for the engineering department to look at. The event data recorder will have ever sensor input stored frame by frame.
An event data recorder "saves" stuff right before an actual event like the airbag going off. Then you have the last ~5 seconds of speed, decelleration, etc.
In this car, nothing happened, so the data recorder knows nothing as well.
My camry (same floorpan) had a master cylinder go out but it was nowhere near this dramatic. Just took an extra inch of the pedal, once. You could also have had a brake pad hang up from rust on its ears then "pop loose" which takes a lot of fluid and sinks the pedal... which then firms up again.
Is it possible that the AC compressor disengaged and the idle bumped down so low that it wasn't spinning the torque converter fast enough? The IACV in my Cherokee is bad and when the ac compressor disengages and it goes to idle down, it will drop to 250 rpm and will roll backwards on slight inclines when that happens.
My guess is traffic was moving around here and the bus driver was being an idiot and beeping.
Originally Posted By: claluja
Get it checked out.
Had my brake pedal go to the floor while driving my E500 in the Fall. Complete brake failure, alarms going off like 4th of July on dash saying brake failure, and no brake power at all. Luckily could coast to a stop. Brakes then worked fine. Dealer says couldn't find anything wrong with it, and that problem was probably that I hadn't changed brake fluid for 3 years. Not saying this is same as your issue, but . . .
Most didn't believe me. Now i have a car which I'm hesitant to put my kids in. My daughter was in car when this happened, and won't get in it again. If dealer can't find problem, trade it in to that dealer.
I'm now much more of a believer in some of these car stories that sound crazy at first glance.
My 01 Taurus did that to me in 06 or 07. Went to stop and brake pedal went right to the floor. Of course that was out of state. Never had a problem again, though. Really strange. I believe it was from the original brake fluid. I'm not a frequent brake fluid changer.
My guess is traffic was moving around here and the bus driver was being an idiot and beeping.
Originally Posted By: claluja
Get it checked out.
Had my brake pedal go to the floor while driving my E500 in the Fall. Complete brake failure, alarms going off like 4th of July on dash saying brake failure, and no brake power at all. Luckily could coast to a stop. Brakes then worked fine. Dealer says couldn't find anything wrong with it, and that problem was probably that I hadn't changed brake fluid for 3 years. Not saying this is same as your issue, but . . .
Most didn't believe me. Now i have a car which I'm hesitant to put my kids in. My daughter was in car when this happened, and won't get in it again. If dealer can't find problem, trade it in to that dealer.
I'm now much more of a believer in some of these car stories that sound crazy at first glance.
My 01 Taurus did that to me in 06 or 07. Went to stop and brake pedal went right to the floor. Of course that was out of state. Never had a problem again, though. Really strange. I believe it was from the original brake fluid. I'm not a frequent brake fluid changer.
JHZR2
Staff member
I'd suspect optical illusion first. If the brake pedal wasn't at the floor, I have my doubts that the brakes went loose.
Originally Posted By: JHZR2
I'd suspect optical illusion first. If the brake pedal wasn't at the floor, I have my doubts that the brakes went loose.
Is gently unapplying the brakes an ABS failure mode? Can the ABS pump do this?
I'd suspect optical illusion first. If the brake pedal wasn't at the floor, I have my doubts that the brakes went loose.
Is gently unapplying the brakes an ABS failure mode? Can the ABS pump do this?
Originally Posted By: demarpaint
Originally Posted By: oilpsi2high
Have the brake system pressure checked for any leaks.
+1 and if it checks out OK, I'd also say it might have been an optical illusion.
I've had it happen to me while stopped in traffic. You see the movement between vehicles and it seems as though you're moving - but you're not.
Originally Posted By: oilpsi2high
Have the brake system pressure checked for any leaks.
+1 and if it checks out OK, I'd also say it might have been an optical illusion.
I've had it happen to me while stopped in traffic. You see the movement between vehicles and it seems as though you're moving - but you're not.
Originally Posted By: djb
With most automatic transmissions there are various places where a leaking solenoid or check valve can cause partial clutch application. You can end up with a "parasitic" reverse gear while in neutral.
Entirely possible - - I have seen torn O-rings on fluid control solenoids that allowed fluid to flow past, even though the solenoid wasn't energized. It did allow partial transmission function to be combined, which did eventually cause transmission failure.
Originally Posted By: djb
But this is an uncommon failure and not the first place to look. Not matter what, the brakes should be far stronger than the engine output.
AGREED!
Originally Posted By: mehullica
Take it to the dealer & tell them the scenario. The event data recorder will have ever sensor input stored frame by frame.
Data recorders only see "electrical" signals - - a sticky fluid solenoid wouldn't be caught because it's a mechanical failure.
With most automatic transmissions there are various places where a leaking solenoid or check valve can cause partial clutch application. You can end up with a "parasitic" reverse gear while in neutral.
Entirely possible - - I have seen torn O-rings on fluid control solenoids that allowed fluid to flow past, even though the solenoid wasn't energized. It did allow partial transmission function to be combined, which did eventually cause transmission failure.
Originally Posted By: djb
But this is an uncommon failure and not the first place to look. Not matter what, the brakes should be far stronger than the engine output.
AGREED!
Originally Posted By: mehullica
Take it to the dealer & tell them the scenario. The event data recorder will have ever sensor input stored frame by frame.
Data recorders only see "electrical" signals - - a sticky fluid solenoid wouldn't be caught because it's a mechanical failure.
1) Why neutral? It was never mentioned that the gear shift lever was touched
2) So we assume the shift lever is in D
3) Since it was on the level road, only way car can go back in reverse if somehow car thought the gear shift lever was in reverse
4) Since the feet was on the brake, unless the brake also failed, the car will be unable to move backwards
5) As soon as gas pedal is punched, car scoots *forward* instead of going backward
6) If the car was going backwards even when brakes were applied, how do you explain the car jumping forward when applied gas?
Simplest explanation? The foot was hovering OVER the gas pedal but probably not pressing it; the road was NOT flat but slight uphill. Many automatic cars *will* roll backwards if no gas is given. Most automatic don't have hill-hold feature. Besides, I am not sure how that logic works.
Obviously spooky ghost explanation is more fun!
2) So we assume the shift lever is in D
3) Since it was on the level road, only way car can go back in reverse if somehow car thought the gear shift lever was in reverse
4) Since the feet was on the brake, unless the brake also failed, the car will be unable to move backwards
5) As soon as gas pedal is punched, car scoots *forward* instead of going backward
6) If the car was going backwards even when brakes were applied, how do you explain the car jumping forward when applied gas?
Simplest explanation? The foot was hovering OVER the gas pedal but probably not pressing it; the road was NOT flat but slight uphill. Many automatic cars *will* roll backwards if no gas is given. Most automatic don't have hill-hold feature. Besides, I am not sure how that logic works.
Obviously spooky ghost explanation is more fun!
the ABS solenoids can, I believe, isolate the master cylinder from the brake circuit. there would have to be a failure in the module or the control circuits to make this happen. Was she on level ground when this happened? it seems to me she would have to be on an incline for gravity to overcome the forward force of idling in D.
the master cylinder can leak, allowing the pedal to sink to the floor with no more travel left. it can happen very slowly. go out there and stand on the brakes and see if it sinks. Try pumping it up when you are stopped, if you think it is sinking.
the strong pushing back into the garage could be idle speed fluctuating with AC compressor. That is more noticeable in slow speed creeping when modulating the brakes.
I'd be pretty unnerved too.
-m
the master cylinder can leak, allowing the pedal to sink to the floor with no more travel left. it can happen very slowly. go out there and stand on the brakes and see if it sinks. Try pumping it up when you are stopped, if you think it is sinking.
the strong pushing back into the garage could be idle speed fluctuating with AC compressor. That is more noticeable in slow speed creeping when modulating the brakes.
I'd be pretty unnerved too.
-m
The data recorder stores over 3 weeks of data, so if you give the date & time of the abnormal events, engineers can look at all the parameters & see what, if anything, went out of specifications
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