Battery -A-, DISCONNECTING AND CONNECTING, IN LUGGAGE COMPARTMENT (0K0)

WARNING: This page is about a different car, the 2023 Audi S3, 2023 Audi RS 3, 2023 Audi A3 Quattro, and 2023 Audi A3. However, it is still accessible from the selected car via links, so may be relevant.

Disconnecting

-- Switch off the ignition and all electrical equipment. Place the ignition key outside of the vehicle.

-- Lift the luggage compartment floor cover.

-- Loosen the nut -1- several turns and detach the battery ground cable terminal clamp -2- from the battery terminal, in order to do this, lift the cover -3- a bit.

Courtesy of AUDI OF AMERICA, LLC

Courtesy of AUDI OF AMERICA, LLC

-- Disconnect the connector -2- from the Battery Monitoring Control Module -J367- -item 3-.

-- Attach the battery ground cable clamp by hand to the battery negative terminal "-" and tighten the nut -1-.

-- Reconnect the connector to the Battery Monitoring Control Module -J367-.

When the battery is reconnected, the following steps must be performed:

Activate the power window regulator one-touch up/down function. Refer to the Service Information.
Check DTC memories of all control modules and delete the displayed entry "Undervoltage" using the Vehicle Diagnostic Tester.

TIP:

After reconnecting the power supply, the ESP warning lamp can only go out after the vehicle has been driven a few meters.

Tightening Specifications

Refer to OVERVIEW - Battery -A-, IN LUGGAGE COMPARTMENT, 0K0