Battery -A-, DISCONNECTING AND CONNECTING, 0K4 AND VH0: Disconnecting

-- Switch off the ignition.

-- Lift the luggage compartment floor cover.

-- If equipped, remove the spare tire.

-- Avant: if installed, remove the subwoofer. Refer to COMPONENT LOCATION OVERVIEW - SOUND SYSTEM / SUBWOOFER -R211-, REMOVING AND INSTALLING .

-- Disconnect the connector -3- on the Auxiliary Battery -A1- by opening the contacts in the Auxiliary Battery -A1- and it will not have power.

Courtesy of AUDI OF AMERICA, LLC

-- Remove the nut -1- and free up the ground cable -4- for the Battery -A- on the threaded pin.

-- Immediately wrap the ground wire with insulating tape -2- and set it aside.