Audi A3 Door Auto Open/Close Problem (8L) (Solution)

The door automatically closes/opens immediately after being opened/closed.

Cause:
Due to unfavorable tolerances, the contact element of the microswitch slips out of its guide on the door locking cylinder, causing an unintended locking or unlocking action immediately after opening or closing.
The problem only occurs when using the door lock cylinder with the key profile; it does not occur when using the remote control.

Solution:
In case of a defect, replace the entire storage bracket, including the microswitch.

Sure, here is the translation of the text from German to English:

"Note:"
Applying a small amount of adhesive to bond the microswitch to the door locking cylinder has proven effective in minimizing tolerance-related movements. Loctite 480 is recommended as the adhesive.