Battery, Disconnecting And Connecting: Notes
WARNING: This page is about a different car, the 2022 Audi SQ7, 2022 Audi S7, and 2022 Audi Q7. However, it is still accessible from the selected car via links, so may be relevant.
Vehicles with 48V System (PR Number VH2/VH3)
The 12V and 48V systems reinforce each other via the Voltage Converter, 48 V/12 V -A7-. As a result, the system can only be de-energized when the 48V system was de-energized beforehand.