With steer by wire does that mean you could lose control of steering if your HV battery dies while driving?
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Steer by wire, dead battery?
- Thread starter gottagofast
- Start date
scottf200
Well-Known Member
I've seen one discussion here: https://www.cybertruckownersclub.co...experiences-steering-and-brake-failure.13008/
Aside: BTW, moving avatars are super visually annoying ... novel for a minute then distracting.
Aside: BTW, moving avatars are super visually annoying ... novel for a minute then distracting.
israndy
Supercharger Hunter
With power steering does that mean you could lose control of steering if your HV battery dies while driving?
BTW, moving avatars are super visually annoying ... novel for a minute then distracting, that's why I chose as little motion as I did
BTW, moving avatars are super visually annoying ... novel for a minute then distracting, that's why I chose as little motion as I did
Power steering there is still a physical link to control the steering. With steer by wire there is not. The question is still unanswered.
Daniel in SD
(supervised)
Steer by wire and power steering are run at low voltage (48V or 12V). My guess is that it can run off the 48V DC-DC even when the 48V battery dies and run off the 48V battery if the HV pack dies.
zoomer0056
Active Member
scottf200
Well-Known Member
FYI, service manuals are freely available:
ucmndd
Well-Known Member
israndy
Supercharger Hunter
Oh, no, I was just mocking the question, seems pretty silly thing to worry about, has a traction battery unexpectedly shut down yet?
Daniel in SD
(supervised)
There have been quite a few steer by wire failures but no one has lost steering (because the system is redundant.)
This one is a high voltage system failure but it doesn't sound like it completely lost drive power:
Not a silly thing to worry about at all. About as sober as worrying about fly by wire in airplanes - one of the most safety critical systems out there. I would hope Tesla did quite a bit of worrying about it.
You lose power steering you can still forcefully move the wheels without power, if the steer by wire loses power is there some backup that allows you to turn the wheels still
Daniel in SD
(supervised)
Every part of the system is supposed to redundant. Two motors, triple sensors, etc. Haven’t heard what they did for power but I’m sure it’s redundant. I doubt it’s going to fail from power loss. If there are ever failures I bet it’s a software bug.
I don't think so. The Cybertruck as no physical linkage from the steering wheel to the steering rack. If both rack motors died (highly unlikely), you would not be able to steer no matter how much you try and turn the wheel. This is my understanding of how the steer-by-wire system works.
I’m just imagining traveling on a mountain road with cliffs and no railing, battery dies as your driving around curves and you have no way to steer while the car was moving at 40-50 mph
Daniel in SD
(supervised)
Just wait a year to buy a cybertruck and no wait a couple weeks to update whenever there’s a software update and you’ll be fine.
Im thinking more about future vehicles not only the cybertruck, like if all teslas have steer by wire 5 years from now, or even some non teslas
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Daniel in SD
(supervised)
It does seem like that could happen. I just wonder if the benefit is big enough. It seems like it will always be much more expensive. I think one reason Tesla is doing it is you need all the redundancy for robotaxis.
israndy
Supercharger Hunter
Like what could happen? All future cars get steer by wire? Of course they will. If people will not be manning the wheels, why would it matter if they have direct linkage? Why would the cars even have dedicated wheels?
Oh, and if the OP's avatar's motion bugs you as much as it did me you can just *ignore* him and his avatar goes away too. Nice
Oh, and if the OP's avatar's motion bugs you as much as it did me you can just *ignore* him and his avatar goes away too. Nice
