Disconnecting and connecting battery in engine compartment — AUDI

🧭 Before you start

Fits: Audi Q3 (8U, 2011–2018); platform code 84

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• Risk of accident.Contrary to the following description, the battery must be disconnected with the ignition SWITCHED ON when working on pyrotechnic components (e.g. airbags, belt tensioners). — Switch off ignition.
• On vehicles without radio-controlled clock, it is necessary to set the date again if the battery is disconnected for a long period .
• After reconnecting the voltage supply, it is possible that the ESP warning lamp will not go out until the vehicle has been driven several metres.

📋 Procedure

1. ⚠ Risk of accident.Contrary to the following description, the battery must be disconnected with the ignition SWITCHED ON when working on pyrotechnic components (e.g. airbags, belt tensioners). — Switch off ignition.
2. Versions equipped with ignition lock: Remove ignition key.
3. Press the release tab (1) and swivel the battery cover (2) upwards; this disengages the guides at the mountings (3, 4) for the battery trim cover (rear).
4. If fitted, open cover in heat insulation sleeve.
5. If fitted, pull off cover (1) over negative battery terminal.

6. Slacken off nut (3) several turns and disconnect battery clamp (2) of earth cable from battery terminal.
7. Unplug electrical connector (2) at battery monitor control unit J367(item 3).
8. When connecting battery, attach battery clamp of earth cable to negative battery terminal "“–”" by hand and tighten nut (1).
9. Reconnect connector at battery monitor control unit J367. [Note: On vehicles without radio-controlled clock, it is necessary to set the date again if the battery is disconnected for a long period .]
10. Select Diagnosis mode and start diagnosis.
11. Select Test plan tab.
12. Select Own test then the following options one after the other: [Note: After reconnecting the voltage supply, it is possible that the ESP warning lamp will not go out until the vehicle has been driven several metres.]

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