I understand, but the risk of life wouldn't be from the bug, it would be from conscious choice of driving without a speedo. There's a critical distinction there.
In this case, mileage/battery are still present, and I would assume safety critical warnings would still be displayed.
That any car can have a dead
/failing battery/fuel pump/whatever one morning or fail and leave you stranded on the road to an hospital has never been considered a safety risk.
In this case, mileage/battery are still present, and I would assume safety critical warnings would still be displayed.