Audi A6 4F Sedan Door Handle

The rear door on the driver's side can only be opened from the inside. I won't be able to read the error codes until Sunday.

Are there any existing experiences or insights regarding the source of the error?

In my opinion, it could be a broken cable, or the motor, or possibly corroded contacts.

Hello,

vag-driver wrote:

The rear door on the driver's side can only be opened from the inside.

I won't have the opportunity to read the error codes until Sunday.

Are there any existing experiences or insights regarding the source of the error?

In my opinion, it could be a broken cable or the motor/corroded contacts.
I had the same problem with my A6. I don't suspect a broken cable, but rather the latter, along with stiff or difficult-to-move mechanics.
The excessive use (the daughter then always had to get in on the other side ) and time allowed the problem to disappear on its own. So, always use all the doors.

Best regards, Rainer.