Active Power-generating CBMs (Metabolic Interchange, Battery System, Internal Furnace) turn off after some turns pass. Since power isn’t full there’s something else up. Those CBMs also can’t be turned off manually, despite their description saying otherwise.
You’re able to clone vehicle parts by installing a part and then immediately attempting to install it again on another section. You’ll get the debug message “Item not found”, but the part is installed anyway. I’m guessing it’s due to new coding that doesn’t update the vehicle menu until time passes.