Boeing 787s must be reset every 51 days or 'misleading data' is shown to pilots

Re:Boeing 787s must be reset every 51 days or 'misleading da... by jcgrillo on Thursday October 24, 2024 @05:18PM (#41939897)

On some cars (recent VWs in particular) when you plug the battery back in you need to twiddle some settings in the computer otherwise the charging circuit will fry the battery prematurely. We've gotten ahead of our skis with this nonsense, time to rein it in.

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Re:Boeing 787s must be reset every 51 days or 'misleading da... by symisc_devel on Thursday October 24, 2024 @05:43PM (#41940142)

This issue is notorious for BMW cars. You have to notify the ECU each time you install a new battery.

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Re:Boeing 787s must be reset every 51 days or 'misleading da... by jcgrillo on Thursday October 24, 2024 @05:58PM (#41940275)

It's hard to imagine an interpretation of this behavior that doesn't involve manufacturers trying to punish independent mechanics and end users who service their own cars. Like, there's no way it's an "honest mistake", right?

BTW I have an AGM ("advanced glass mat") battery in my 1995 Toyota which has a completely analog charging system, and it doesn't get cooked, so it's not because there's something special about the battery.

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Re:Boeing 787s must be reset every 51 days or 'misleading da... by HeyLaughingBoy on Thursday October 24, 2024 @06:43PM (#41940601)

Don't attribute to malice what can easily be explained by overstressed Systems Engineers trying to resolve multiple conflicting Requirements.

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Re:Boeing 787s must be reset every 51 days or 'misleading da... by jcgrillo on Thursday October 24, 2024 @07:33PM (#41940886)

My point is there was absolutely no need for the System Engineers to touch the charging system. The normal analog diode rectifier variety that has been standard since the 1960s is Good Enough. No "Innovation" Needed. Take your spacecamp nerds elsewhere.

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Re:Boeing 787s must be reset every 51 days or 'misleading da... by 4gotunameagain on Friday October 25, 2024 @12:33AM (#41942232)

Sure, you MUST know better than the BMW engineers who designed the feature we have zero information about.

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Re:Boeing 787s must be reset every 51 days or 'misleading da... by Log_out_ on Friday October 25, 2024 @02:44AM (#41942827)

at this point anything is possible: they barely write the specs

https//www.heise.de/en/news/BMW-Huge-recall-and-profit-warning-due-to-defective-Conti-brakes-9864793.html

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Re:Boeing 787s must be reset every 51 days or 'misleading da... by whatevaa on Friday October 25, 2024 @11:04AM (#41945960)

Engineers often do stuff without any thought of maintenance. Just ask mechanics/maintenance personnel.

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Re:Boeing 787s must be reset every 51 days or 'misleading da... by 4gotunameagain on Friday October 25, 2024 @03:38PM (#41948848)

Having performed repairs on a BMW motorcycle, I am quite aware. It is a good point, but I highly doubt that it would play a role in this case. There must be something there that we are missing.

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Re:Boeing 787s must be reset every 51 days or 'misleading da... by tdullien on Friday October 25, 2024 @09:37AM (#41945154)

"Somebody needed to get promoted"

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Re:Boeing 787s must be reset every 51 days or 'misleading da... by dzhiurgis on Thursday October 24, 2024 @05:57PM (#41940265)

Ahhh, "program a new battery" $400 please.

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Re:Boeing 787s must be reset every 51 days or 'misleading da... by chiph on Friday October 25, 2024 @08:18AM (#41944510)

That's because BMW ECUs adapt to the lower voltage as the battery ages and instruct the alternator/charger to provide more current. Replace the battery and the ECU would cause it to be overcharged unless you notify it of the replacement. Yes it's an over-engineered system, but ... German car.

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Re:Boeing 787s must be reset every 51 days or 'misleading da... by reportgunner on Friday October 25, 2024 @08:46AM (#41944721)

Sounds like an afterbender straightener architecture.

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Re:Boeing 787s must be reset every 51 days or 'misleading da... by RichardHesketh on Thursday October 24, 2024 @06:00PM (#41940280)

Rein. It’s about controlling a horse, not an entire nation.

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Re:Boeing 787s must be reset every 51 days or 'misleading da... by jcgrillo on Thursday October 24, 2024 @06:04PM (#41940307)

Thanks, I blame phone autocorrect

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Re:Boeing 787s must be reset every 51 days or 'misleading da... by AStonesThrow on Thursday October 24, 2024 @08:05PM (#41941054)

It's always champing at the bit

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