Last post on Dec 12, 2013 at 2:29 PM
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Toyota, Hyundai, Lexus, Ford, Audi, Automotive News, Legislation
#2221 of 2292 Re: Forget the Red Button [wwest]
Jan 11, 2012 (9:46 am)
But still, it wouldn't have failed had the ECU not left it enabled.
But how would we ever know that, couldn't it have just been a poorly assembled compressor?
Wouldn't an ECU malfunction trigger a Check Engine light or some other warning light or readable error code.
#2222 of 2292 Re: Forget the Red Button [andres3]
Jan 11, 2012 (4:56 pm)
"...couldn't it have been..."
Yes, but I was "rebuting" the statement that there was no computer "failure" associated with the compressor failure.
"...Would an ECU malfunction trigger..."
Possibly not, the A/C monitor firmware will provide an indication and throw a code if the compressor is enabled but NOT rotating cognizant with engine RPM. The inverse case is a "corner case" and would be mostly needless.
#2223 of 2292 Re: Forget the Red Button [wwest]
Jan 12, 2012 (8:13 am)
I'm with andres3, all of this is pure speculation...if not outright hogwash !!
#2224 of 2292 Re: Forget the Red Button [houdini1]
Jan 12, 2012 (10:14 am)
That was the actual intention.
#2225 of 2292 Re: Forget the Red Button [houdini1]
Jan 12, 2012 (12:05 pm)
Yes, I agree. This discussion frequently takes turns away from the topic.
Apr 12, 2012 (8:55 am)
"Federal regulators plan to require automakers to design a brake-throttle override system into future vehicles to reduce the risks of high-speed, unintended acceleration.
The proposal by the Department of Transportationís National Highway Traffic Safety Administration is a result of a highly publicized 2009 crash of a Lexus ES 350 and a subsequent flood of complaints about incidents of unintended acceleration in Toyota and Lexus vehicles."
Federal regulators want brake override systems in all cars (LA Times)
#2227 of 2292 Re: A needed fix? [steve_]
Apr 13, 2012 (9:00 am)
If they expect it to be functional then it will need to be implemented separately from the engine/transaxle control ECU.
#2228 of 2292 Mercedes gets into the act
by Stever@Edmunds HOST
Aug 13, 2012 (5:16 am)
Maybe floor mats will just get banned.
"Mercedes-Benz is recalling all-season accessory floor mats sold in model year 2012 and 2013 ML-Class vehicles because they could cause the car's gas pedal to get stuck."
Mercedes-Benz recalls floor mats from ML-Class (Detroit News)
#2229 of 2292 UA still an issue?
Aug 28, 2012 (3:47 pm)
just did a bit of math and found the ratio of complaints to NHTSA for Unintended Acceleration to the total number of that car's sales for the last seven years (2006-2012)
The results for 4 cars..Sante Fe, Camry, Accord, and Malibu.
# of complaints : total sales
Sante Fe - 1 : 6,404
Camry - 1 : 2,960
Accord - 1 : 31,360
Malibu - 1 : 60,640
The complaint rate for the Sante Fe is 10x that of the Malibu and the Camry is 20x.
There are plenty of reports coming in for Toyota even after their recall, and Hyundai isn't trending very well either
#2230 of 2292 Re: UA still an issue? [greg128]
Aug 28, 2012 (5:02 pm)
If driver error was responsible for UA cases, then it would follow that older drivers would have a higher report rate. However I checked the complaint rate for a car that probably has one of the highest average age buyer - Ford Crown Vic, and a car that should have a relatively much lower age driver - Toyota Prius.
#complaints : total sales
Ford Crown Vic - 1 : 26,450
Toyota Prius - 1 : 3,060
These complaints are made mostlly only after an accident of some kind and most reported multiple instances before the accident where the accelerator pedal stuck or responded abnormally. I am sure these are only a small percentage of actual occurances of UA.
I think it is safe to say that there are definitely instances of driver error where the accelerator is mistaken for the brake, but that does not explain the much higher rate in some makes, even when pedal positions and floor mat placement is taken into account. Luckily this is rare, but apparently real, and in all probabiltiy having something to do the the electronics and computer control.
This happened to a couple in their 60's in Korea in a Hyundai Sonata:
Sonata UA Video