To ensure that the update process finishes without interruption due to weak battery - if that happens it can brick your car. Tbf you can also just connect the battery to a power source and keep the engine off. Depending on update and car updates that take a few hours are not unheard of
This is such extremely poor engineering that it throws me into a rage. There is nothing to prevent them from installing the update in the background progressively while driving and then just switching to the new version in one swift atomic operation (like changing the name of a directory) when it’s ready
Why the fuck would the engine be on?
To ensure that the update process finishes without interruption due to weak battery - if that happens it can brick your car. Tbf you can also just connect the battery to a power source and keep the engine off. Depending on update and car updates that take a few hours are not unheard of
This is such extremely poor engineering that it throws me into a rage. There is nothing to prevent them from installing the update in the background progressively while driving and then just switching to the new version in one swift atomic operation (like changing the name of a directory) when it’s ready
That’s additional work. Easier to tell people to run the engines.