Vehicles with 12 V System (VH0):
WARNING: This page is about a different car, the 2021 Audi S4 and 2021 Audi A4 Quattro. However, it is still accessible from the selected car via links, so may be relevant.
-- Turn off the ignition and all electrical equipment.
-- Open the cover -1- by releasing the catch.
-- Connect the red charging clamp "+" from the battery charger to the positive terminal -2- and connect the black charging clamp "-" to the negative terminal -3-.
-- Connect the battery charger electrical system connector and turn on the battery charger. Refer to BATTERY, CHARGING .