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Drivetrain Software vs. "Other" Software

Discussion in 'Model S: User Interface' started by mknox, Oct 16, 2012.

  1. mknox

    mknox Well-Known Member

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    Tesla has talked about how the drivetrain control is separate from the software that controls the car's screens, entertainment systems and so forth, and that you could still safely drive the car if this secondary software for some reason "crashes".

    I was wondering if these over-the-air updates are for both drivetrain and secondary systems or just secondary systems. It occurred to me that if they were able to implement "creep", they must be touching the drivetrain software through these updates.

    Is this cause for concern? Could a bad flash of the drivetrain software potentially introduce some sort of safety issue? I'm sure Tesla tests these things out, but just the same...
     
  2. favo

    favo Model 3 Reservation Holder

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    Presumably updates will be digitally signed to ensure they are authentic and intact.
     
  3. VolkerP

    VolkerP EU Model S P-37

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    Failure/interruption to apply an OTA firmware update would render your Model S useless, until recovered by a ranger visit. I expect Tesla to prevent this happening. Model S already features the best UPS imaginable - several months of battery backup power. They could add a watchdog circuit, that activates a fallback copy of the firmware. Still you cannot rule out something like this to happen, just make it very very unlikely.
     
  4. mknox

    mknox Well-Known Member

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    I was also wondering about the scenario where the add something like "creep" and inadvertently break something like ABS or Stability Control. You want to be really, really sure about powertrain updates and probably not be updating those systems as frequently.
     
  5. Citizen-T

    Citizen-T Active Member

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    If less frequently means larger updates (more changes) then I disagree. Small, well tested, iterative changes are exactly how I would go.
     
  6. strider

    strider Active Member

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    It's likely they'll do drivetrain software updates during service. Although there is some grey area since they added creep over the air.
     
  7. W.Petefish

    W.Petefish Active Member

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    It appears as if all updates are OTA. (as well as patches and diagnostics.)
     

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