Audi A8   General maintenance   Checking and topping up fluids  Filling the tank
The tank flap can be released manually if the central locking system should fail to operate.
The manual release mechanism is located in the side trim on the right of the luggage compartment. Firstly remove the ventilation grille on vehicles with selective catalytic reduction*.
Press both tabs -A- Fig. 1 and swivel the ventilation grille downwards. You can now remove the grille upwards.
Release the ring Fig. 2 from its holder and carefully pull the ring Caution!.
Press the left side of the flap to open it Fig. 3.
Caution!
Pull the ring only until you feel resistance; otherwise you may damage the manual release mechanism (you cannot hear it releasing the tank flap).

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