Door Lock Malfunction: A6 4B Documentary (Solution)

Door lock not functioning - does not open or close.

Cause:
Due to repeated opening and closing (for example, frequent use), or defective microswitches in the door lock, the locking actuators in the lock can overheat and become damaged.
Various functional defects in the lock, caused by a short circuit on the circuit board or by malfunctions in the door lock mechanism.

Solution:
Please read the error codes.
Replace the faulty door lock.