Unintended acceleration
Pit Crew
Joined: May 2016
Posts: 178
Likes: 11
From: TN
"Brake Over Ride System"???
WTF - How come I didn't check that on the options list when I bought my new LX!?
Here is Al Unser on the subject.....
https://www.youtube.com/watch?v=otyax6onMWw
Looks like Audi and all the others had the "Brake Over Ride System" as standard equipment..... :-)
So what happened to the guy whose wife ran off the road and he blames LEXUS for "complete brake failure?"
Oh - here it is ---"CLOSED"
https://www.clublexus.com/forums/ls-...failure-2.html
I guess it got a bit TOO FUNNY...
WTF - How come I didn't check that on the options list when I bought my new LX!?
Here is Al Unser on the subject.....
https://www.youtube.com/watch?v=otyax6onMWw
Looks like Audi and all the others had the "Brake Over Ride System" as standard equipment..... :-)
So what happened to the guy whose wife ran off the road and he blames LEXUS for "complete brake failure?"
Oh - here it is ---"CLOSED"
https://www.clublexus.com/forums/ls-...failure-2.html
I guess it got a bit TOO FUNNY...
EXACTLY! Got BRAKES??? seriously people, cars do not drive themselves! Oh wow I never thought that would be a controversial statement..."autonomous" vehicles on the other hand, DO have the ability to drive themselves...but the cars we are speaking about here do NOT.
Lexus Fanatic
Joined: Jan 2014
Posts: 5,371
Likes: 526
From: BC Canada
" All of my unintended accelerations"
LOL. You must have the worst luck on the planet. I've been driving for 35 years (including tons of patrol).....prob 2 million miles and 30different vehicles. Never had "unintended acceleration."
LOL. You must have the worst luck on the planet. I've been driving for 35 years (including tons of patrol).....prob 2 million miles and 30different vehicles. Never had "unintended acceleration."
Driver
Joined: Dec 2017
Posts: 168
Likes: 37
From: NV
Never an un-commanded acceleration though. Bike and car always did what it was told to do, problem existed in the accelerator to steering wheel interconnect biological unit.
Driver School Candidate
Joined: Apr 2010
Posts: 10
Likes: 0
From: NY
You thought your foot was on the brake, but it was not. This has been investigated many times by Independent government agencies and in every instance they found that unintended acceleration was caused by driver error. They did an exhaustive investigation into unintended acceleration in Toyota and Lexus products and determined that there was no issue or failure.
If your foot foot was firmly on the brake even at full throttle your car would not move. Try it. Go into an empty parking lot, put your left foot all the way on the brake and give it full throttle. It won’t go anywhere.
The most powerful thing on any car are the brakes. The engine is less powerful than the brakes.
If your foot foot was firmly on the brake even at full throttle your car would not move. Try it. Go into an empty parking lot, put your left foot all the way on the brake and give it full throttle. It won’t go anywhere.
The most powerful thing on any car are the brakes. The engine is less powerful than the brakes.
I have also noticed that in intermittent instances, when slowing down (below 10mph), and not braking the engine will rev and the car will accelerate slightly. What is the explanation for this?
Driver
Joined: Dec 2017
Posts: 168
Likes: 37
From: NV
Your car is downshifting as you decelerate. This causes your engine revs to rise as the gearing changes. Its not abnormal and is pretty much the way automatic transmissions work for the last 50 years.
Lexus Fanatic
Joined: May 2012
Posts: 68,918
Likes: 4,121
From: Maryland
I appreciate your take on the brakes vs engine. However, you must take into account that: 1. This vehicle is fly by wire. and 2. There are anomalies that occur with electronic component, particularly with software controlled operations. There are too many unaccounted interfering signals that are non continuous so the intermittent nature of my experiences. I am also sure, that if my right foot had not been on the brake in each of my experiences the car would have not held in place and accelerated and crashed either into the car in front or the garage wall!!
I have also noticed that in intermittent instances, when slowing down (below 10mph), and not braking the engine will rev and the car will accelerate slightly. What is the explanation for this?
I have also noticed that in intermittent instances, when slowing down (below 10mph), and not braking the engine will rev and the car will accelerate slightly. What is the explanation for this?
You likely had the same foot on the brake and the gas without realizing it, or if you're describing "acceleration" as an increase in RPMs as you described when slowing down its possible there was no acceleration at all.
Intermediate
Joined: Feb 2010
Posts: 369
Likes: 37
From: CA
I appreciate your take on the brakes vs engine. However, you must take into account that: 1. This vehicle is fly by wire. and 2. There are anomalies that occur with electronic component, particularly with software controlled operations. There are too many unaccounted interfering signals that are non continuous so the intermittent nature of my experiences. I am also sure, that if my right foot had not been on the brake in each of my experiences the car would have not held in place and accelerated and crashed either into the car in front or the garage wall!!
I have also noticed that in intermittent instances, when slowing down (below 10mph), and not braking the engine will rev and the car will accelerate slightly. What is the explanation for this?
I have also noticed that in intermittent instances, when slowing down (below 10mph), and not braking the engine will rev and the car will accelerate slightly. What is the explanation for this?
Driver School Candidate
Joined: Apr 2010
Posts: 10
Likes: 0
From: NY
Impossible to have foot on brake and accelerator at the same time.
Do not jump to conclusions....
I have had this also and now have been able to duplicate the incident. Just a little more time and I will expose what Lexus HAS BEEN HIDING!
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Racer
Joined: Apr 2016
Posts: 1,846
Likes: 117
From: Sacramento, CA
Hi userflw, I believe heel-and-toeing is a technique to cover both the brake and gas simultaneously. As an engineer, I can understand the possibility of spurious electrical spikes in any electronic system, or maybe a faulty pedal position sensor. I am open to the possibility, for sure. However, I have not seem any conclusive video to document unintended acceleration. If you're able to duplicate this dangerous phenomenon then please find an empty parking lot and share the video of it happening.
Last edited by FatherTo1; Oct 16, 2018 at 09:30 PM.
Driver School Candidate
Joined: Apr 2010
Posts: 10
Likes: 0
From: NY
Any wise crackers out there. My MBs never had this or any of the 15 or so American manufactured cars?
Driver School Candidate
Joined: Apr 2010
Posts: 10
Likes: 0
From: NY
All that fly by wire means, is that electrical connections and devices take the place of direct mechanical and hydraulic connections. More cause for error and anomalies.
Need a real ENGINEER to look into this, or for Lexus to open up to the problem, but I guess the financial exposure is too much. Not to mention the bad publicity.
Need a real ENGINEER to look into this, or for Lexus to open up to the problem, but I guess the financial exposure is too much. Not to mention the bad publicity.
Lexus Fanatic
Joined: May 2012
Posts: 68,918
Likes: 4,121
From: Maryland
There are unintended acceleration claims against a wide variety of vehicles.
And I can absolutely put my foot on the gas and brake at the same time. Also, full throttle if your foot is on the brake the car will not move. The engine cannot overpower the brakes, it’s been tested and proven. The NHTSA has looked into it and has declared it driver error every time.
You do also realize that the 98-00 LS400 and the LS430 also have drive by wire throttles right? And if you google, there are complaints, as there are with almost every car.
Driver error. I look forward to the video that will never come lol
And I can absolutely put my foot on the gas and brake at the same time. Also, full throttle if your foot is on the brake the car will not move. The engine cannot overpower the brakes, it’s been tested and proven. The NHTSA has looked into it and has declared it driver error every time.
You do also realize that the 98-00 LS400 and the LS430 also have drive by wire throttles right? And if you google, there are complaints, as there are with almost every car.
Driver error. I look forward to the video that will never come lol
Last edited by SW17LS; Oct 16, 2018 at 05:52 PM.
Lexus Fanatic
Joined: Jan 2014
Posts: 5,371
Likes: 526
From: BC Canada
Impossible to have foot on brake and accelerator at the same time.
Have more driving experience than you and how come it is only the LS that the unintended acceleration occurs?
Last edited by roadfrog; Oct 17, 2018 at 04:40 PM.
