Detach the protective frame in the area of the bolts. To remove the locking hook, unscrew the bolts "arrows" and remove the hook from the frame. Insert the locking hook into the frame and secure it lightly with the bolts. Close the roof. When the roof is closed, press the roof drive switch again and hold it down for approx. 10 seconds. This initializes the engine and moves the locking hook into the correct position. Open the roof and tighten the bolts to a torque of 4.5 Nm.
(The original version is on the portal AudiManual.ru)