Owner experiences steering and brake failure

[g7bupw9z]

In this case you might have your cart in front of your horse though.

Feel free to find and read all of my posts on this forum on different threads in regards to the Critical Failure.

For the record, brake and steering failure should not happen together as they should be on seperate systems. Both are a safety risk. It could of been lethal, so no joking matter. There are other similar failures by other owners being reported.

It's true that some Tesla issues might stem from users unfamiliar with the technology, like those new to electric vehicles or advanced driver assistance systems.

However, acknowledging potential user error doesn't negate the possibility of software bugs affecting features like the SBW system. This could explain the delay of Full Self-Driving (FSD) on Cybertrucks.

While we hope proper operation minimizes the risk of accidents, any software issue requires prompt attention and a focus on safety improvements from Tesla.

All road users' safety remains paramount, and software issues should be addressed as soon as possible. In my experience with multiple Telsas, I am confident that they are addressing all the issues, not that they don't know about them or that their design is flawed.

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[JBee]

It's true that some Tesla issues might stem from users unfamiliar with the technology, like those new to electric vehicles or advanced driver assistance systems.

However, acknowledging potential user error doesn't negate the possibility of software bugs affecting features like the SBW system. This could explain the delay of Full Self-Driving (FSD) on Cybertrucks.

While we hope proper operation minimizes the risk of accidents, any software issue requires prompt attention and a focus on safety improvements from Tesla.

All road users' safety remains paramount, and software issues should be addressed as soon as possible. In my experience with multiple Telsas, I am confident that they are addressing all the issues, not that they don't know about them or that their design is flawed.

So according to the various other critical failures posted by CT owners on this site, they were not software failures, but hardware, including the PCS (Power Conversion System) and wiring harness. None a likely user errors at all.

These being not the same failure makes things worse, not better, because they unlikely have the same cause. That plus the fact that the brakes go down whilst the steering goes into failsafe and is hard to steer, makes things worse again. Then no handbrake etc. And to top it off you door locks fail and the vehicle locks you out so you have to recover using a jumper cable to the front fender etc whilst potentially stranded on the middle of the road, if you didn't already crash into something.

Theres a bunch of risk factors here that are cascading and should not occur at the same time at all.

It should be inherently safer from the outset by allowing at least one of those systems to operate normally for some level of control, otherwise exactly on what way have those changes made the vehicle better?

I can positively guarantee you that there is no reason for customers to be exposed to this level of failure, from a mechanical, electrical or software and control system perspective or from the lack of testing in factory of the overall design.

What would the result be if driving down a windy mountain pass with a fully loaded trailer and bed?

Its serious business.

 

[CyberGus]

All we know is it left the owners needing a ride.

They seem to have survived the ordeal ?‍

 

[TickTock]

They did not lose steering or brakes. They lost redundancy and the truck, because these are critical functions, instructed him to pull over and stop driving. In legacy cars, you don't need to be told to pull over because the force required to steer makes it obvious something is wrong. For the CT, a firm and scary warning plus reduction of speed is required to prevent idiots from ignoring it and continuing driving. No story here except for the fact that a couple people have experienced this which is a pretty high failure rate given the scarcity to CT's on the road.

 

[HaulingAss]

They seem to have survived the ordeal ?‍

Yeah, no lives lost, no blood spilled.

But it must have been terrifyingly dangerous!

 

[oc_ronald]

All we have is a photo of a Cybertruck on a flatbed and a very vague tweet. That someone would take the time to write an article based on that tweet and what some people replied to it, says a lot about the state of the media.

 

[CyberGus]

I'd prefer to believe the first-hand experiences of our forum members over a rando's Tweet.

The steering was slightly heavier and the brakes were softer, similar to a ICE when there is some sort of failure. I expected the steering to feel different because it was now just two wheels. But I was not expecting the softness in the brakes. Almost like brake fade when brakes get too hot.

That is the best way I can describe the feeling while it was happening. Being that it happened 3 different times, I got a good feeling of it.

 

[NoMoGas]

What if you are driving through curvy mountain roads with cliff on one side?

I don't mean to sound snarky but that is why the system is redundant. For example, your steering has two steering motors. Each one has three sensors. If one of those sensors loses its mind you will get a "critical failure" and told to pull over… But you still have your back up motor with three working sensors. They've been landing airplanes like this for decades

 

[CyberGus]

What we really need is dual-steering

 

[Tony Roe]

WOW, that's a lot of reading. I'm not an engineer but I've been around Autos, Trucks & Firetrucks for a while. So, I do believe the brake system on a CT is "Hydraulic", electric assist. I guess the steering being fully electric DBW. If you lose full electrical Power you will lose everything, unless there is some kind of battery back up power connected to the steering system. The brakes being Hydraulic WILL still work But you will have to use TWO feet on the brake pedal. Just like on the OLDER ICE vehicles, If you lose your engine you will lose the POWER BOOSTER but still have a brake system, It will be VERY hard to push the pedal down but they will work.

T

 

[Tito]

I thought yahoo was a chocolate drink.

 

[JBee]

They seem to have survived the ordeal ?‍

I'd prefer to believe the first-hand experiences of our forum members over a rando's Tweet.

I think you are not taking the failure seriously enough, because you aren't privy to "how" it should work.

If a fatality is required before you take notice, then I sure hope you don't work on systems were lives are at stake.

The error message came with two unrelated failures, one being a part of the SbW and the other the brakes.

These should never happen together, and wouldn’t in a aircraft FbW system, unless there was a fire or impact damage.

There's no point in having a redundant sysytem, if at the same time the design allows for more than one unassociated safety system to fail at the same time.

This is a design fault, expect a recall.

 

[fhteagle]

This reminds me of the early days of the Embraer 170/190 series, which had so many return to gate events for electronic glitches it started to be called the "Embraer 180".

If it's just a loss of redundancy and not a loss of function, it's annoying but needs fixed. If it's an actual loss of function, either steering or brakes or heaven forbid both at once, that's a whole other ballgame. I've had some of both levels of failure in my aviation career, and wouldn't wish the latter on anyone.

 

[JBee]

I don't mean to sound snarky but that is why the system is redundant. For example, your steering has two steering motors. Each one has three sensors. If one of those sensors loses its mind you will get a "critical failure" and told to pull over… But you still have your back up motor with three working sensors. They've been landing airplanes like this for decades

The error message for just the steering would be one thing, but brakes failing at the same time is a no go.

I don't get how people are using a "error message" to cover and jest for an obvious serious component failure.

Did the component fail? Yes.
Is it a critical safety issue. Yes (that is what the error says right?)

And now everyone is still happy to drive it without concern?

Just because an error message pops up on a screen doesn’t mean you should ignore it like legacy media.

The error message will not save you, it will just let you know that you have lost full control of the vehicle and in the very best case a you will be stranded on the side of the road?

Is that in any way acceptable performance from a new vehicle? Absolutely not, even if the fanbois are blinded by CTs bling.

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