AKB 1. Battery. In the trunk in the spare wheel well; 2. Negative terminal cover; 3. Cover for positive terminal; 4. Nut. 5 Nm; 5. Electrical wire to the relay and fuse box under the front panel on the left; 6. Fuse block A "SA"; 7. Nut; 8. Positive cable to the engine; 9. Bolt; 10. Nut. 5 Nm; 11. Used electrical wire of the battery monitoring system "J367". Observe the sequence of disconnecting the ground cable; 12. Ground wire with used battery control "J367"; 13. Bolt; 14. Nut. 18 Nm; 15. Hose center, gas outlet; 16. Bolt. 2 pcs. 18 Nm; 17. Mounting bracket
Disconnecting and connecting the battery
Caution! Risk of accident. When working on pyrotechnic units (eg Airbag, seat belt tensioner) The battery must be disconnected in a special way, described below, with the ignition on.
Turn off ignition. Remove boot floor "3". If present, remove mud tray. If present, remove Bassbox "2". Bend back floor covering "1" over cover.
Unlock the "arrow" latches and open cover "1".
Open cover "1" above the negative terminal of the battery. Loosen the nut a few turns and remove the pole tip "arrow" of the ground wire from the battery terminal.
Connection
Disconnect the electrical plug connection "2" used for checking the battery "J367" "pos. 3". When connecting manually, place the ground wire pole tip on the negative pole of the battery and tighten the nut "1".
Connect the electrical plug connection to the battery monitoring control unit "J367". If the wires to the battery terminals are reconnected, the following operations must be performed: Activate the automatic up/down mode of the electric window. Interrogate the event memory of all control units and delete the "Low voltage" fault message.
Note: After reconnecting the power supply, the ESP warning light may not go out until after driving for several meters.
If available, install Bassbox.
Removing the ground wire from a used battery monitoring system "J367"
Switch off ignition. Remove boot floor "3". If present, remove mud tray. If present, remove Bassbox "2". Bend back floor covering "1" above cover. Unlock latches "arrows" and open cover "1". Remove on-board tool with tool mount. Open cover "2" above negative terminal of battery. Loosen nut by several turns and remove pole tip "3" of ground wire from battery terminal. Disconnect electrical plug connection "4". Unscrew nut "1" and remove ground wire "6" from used for battery test "J367" "pos. 5".
Installation
Installation in reverse order: connect the battery. If available, install the Bassbox.
[The original text of the material can be found on the website: audimanual]