Hi,
I believe there are locks that need to be released behind the liner on both sides of the rear framework for the rear window to move. I have an A4 and know what you are referring to as far as the window lifting upward before being able to open the lid.
I attached two pics below for you. One is a factory pic which I circled where the approximate location is and the second shows where the allen wrench is placed to unlock things. Keep in mind, the opposite needs done when you close it.
Let me know if this helps. Be careful not to damage the headliner.
Take care,
Joe
See pics below.
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Wednesday, October 5th, 2022 AT 7:42 PM