Spontaneous acceleration in my Taycan 2022 (following software update)

[Mila_kirs]

I felt a spontaneous acceleration driving my Taycan 2022, it happened after the update. Has anyone experienced this? The car unexpectedly without me pushing gas pedal accelerated and I was bearly able to push breaks driving in traffic.

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[Jhenson29]

The car unexpectedly without me pushing gas pedal

My car didn’t come with a gas pedal.

 

[Wakesurfer]

My car didn’t come with a gas pedal.

?

 

[whan]

It’s almost 100% some form of operator error. They did a study on the supposed Toyota unintended acceleration and it was split into either people getting floor mats jammed on top of the accelerator pedal, or just people confusing the pedals

 

[Archimedes]

We’re you pressing down on the brake pedal when you got this spontaneous acceleration?

Alternatively, we’re you using ACC?

 

[DerekS]

I'll take "things that never happened" for $1000, Alex.

 

[Satiger]

I felt a spontaneous acceleration driving my Taycan 2022, it happened after the update. Has anyone experienced this? The car unexpectedly without me pushing gas pedal accelerated and I was bearly able to push breaks driving in traffic.

Was it on hold and somehow that got released ?

 

[Chris8536]

I’m guessing acc which can suddenly accelerate when you aren’t expecting if set too high.

 

[TXAG]

I felt a spontaneous acceleration driving my Taycan 2022, it happened after the update. Has anyone experienced this? The car unexpectedly without me pushing gas pedal accelerated and I was bearly able to push breaks driving in traffic.

Howdy and welcome to the forum, OP! I see you're getting a robust initiation from fellow denizens. Don't worry - we all mean well although some are more smart alecky than others

This issue could be disastrous, so we'd better get you an answer. We need a little more clarity though. Did the acceleration happen when your foot was on the brake pedal, when your foot was off the brake pedal but you were using brake HOLD, when you were coasting, or when you were using adaptive cruise control (ACC)? Like @Chris8536 , I'm thinking ACC is the culprit. If my ACC slows the car down for a vehicle in front of me and that vehicle changes lanes, the ACC will initate acceleration without my stomping on the gas pedal accelerator.

 

[whitex]

It’s almost 100% some form of operator error. They did a study on the supposed Toyota unintended acceleration and it was split into either people getting floor mats jammed on top of the accelerator pedal, or just people confusing the pedals

While you are absolutely correct that the vast majority of reported unintended accelerations are user error, you picked a really bad manufacturer to use as an example. Toyota is the only manufacturer I have ever heard of which actually had genuine unintended acceleration proven in court due to horribly designed software and major safety process oversights.
https://abcnews.go.com/Blotter/toyo...dly-unintended-acceleration/story?id=22972214
As a side note, Toyota software engineers today are most safety process driven engineers I've ever worked with (all my experiences with them were after 2014).

To be clear, all other incidents of all other brands I've ever read about (including plenty of Teslas), have always turned out user error where the user pressed the wring pedal. With newer tech cars like Tesla, they have logs clearly showing which pedal was activated, but not just Tesla, I know my 2006 Lexus had similar logs available to the techs at the dealer because one of them showed me - in that particular case the customer brought in a Lexus claiming it stalls, but they pulled out a log showing both accelerator and brake were mashed together in the middle of a highway, meaning customer wanted hit the accelerator to pass, but fat-footed both pedals, and car computer prioritized brake over gas, so customer thought the car stalled.

EDIT: Additional link with results from the Toyota software/firmware investigation from back then:
https://www.edn.com/toyotas-killer-firmware-bad-design-and-its-consequences/

 

[backslashed]

I sure hope spontaneous acceleration is not the reason for the lack of answer from the OP.

 

[Satiger]

While you are absolutely correct that the vast majority of reported unintended accelerations are user error, you picked a really bad manufacturer to use as an example. Toyota is the only manufacturer I have ever heard of which actually had genuine unintended acceleration proven in court due to horribly designed software and major safety process oversights.
https://abcnews.go.com/Blotter/toyo...dly-unintended-acceleration/story?id=22972214
As a side note, Toyota software engineers are most safety process driven engineers I've ever worked with (all my experiences with them were after 2014).

To be clear, all other incidents of all other brands I've ever read about (including plenty of Teslas), have always turned out user error where the user pressed the wring pedal. With newer tech cars like Tesla, they have logs clearly showing which pedal was activated, but not just Tesla, I know my 2006 Lexus had similar logs available to the techs at the dealer because one of them showed me - in that particular case the customer brought in a Lexus claiming it stalls, but they pulled out a log showing both accelerator and brake were mashed together in the middle of a highway, meaning customer wanted hit the accelerator to pass, but fat-footed both pedals, and car computer prioritized brake over gas, so customer thought the car stalled.

Don't want to derail the original topic but like to point out few discrepancies.

Toyota's unintended acceleration on certain models were linked to low clearance on gas pedal manufacturing. Rest all reported incidents were related to user error.

And even the article that was shared, it points to 'sticky' gas pedal than the software . If we recall, initially Toyota was battling the misinformation of the cause as electro-magnetic interference with software. Then it got shifted to just software! .

It was then Toyota had to import a certain scanner from Japan and to trained 9 (nine) in US to read logs, performance parameters from the engine to identify if those indeed were interference / software related or not.

This is when I became wary of qualified resources who can handle foreign made modern cars in US .

Now onto sticky pedal, not all Lexus models and not all vehicles within those models were affected by this . It was finally linked to a supplier and to one particular plant which used those parts. And that wasn't in Japan.

I have driven only Lexus cars for past 24 years . Since 2005, have had 3 different models at any in point. All Lexus I owned were manufactured in Japan and knowing affected plant/supplier info, not a single moment feared driving those.

That all being said, the way Toyota handled the saga is not acceptable. They should've replaced the supplier or at least stopped the assembly until suitable one is found . Corporate greed and mass production expansion over powered their core DNA, quality !

 

[DerekS]

I’m guessing acc which can suddenly accelerate when you aren’t expecting if set too high.

But the brake pedal halts ACC immediately, right?

OP said the "breaks" "bearly" stopped it.

 

[DerekS]

It’s almost 100% some form of operator error. They did a study on the supposed Toyota unintended acceleration and it was split into either people getting floor mats jammed on top of the accelerator pedal, or just people confusing the pedals

Tesla went through rounds of this too, all ended up operator error AFAIK.

This one happened near me.

https://www.nbcbayarea.com/news/local/tesla-crashes-into-starbucks-in-south-bay/2079666/

 

[Satiger]

But the brake pedal halts ACC immediately, right?

OP said the "breaks" "bearly" stopped it.

Technically should, that too when manual braking was engaged.

Multiple reads of OPs post, may be OP was on ACC and was resting the foot on the pedal (I found no separate foot resting in Taycan's is a inconvenience especially during long driving with ACC) which accidentally got pressed ?

Which could give little time to stop the car , giving the impression barely able to stop ?

Unless OP gives more info, it's hard to know exactly what happened .

But OP gives hope for some lawyers ?!

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