Feedback...
The trick of 'locking with a key' doesn't work on the Caddy.
With the key, only the driver's door opens, regardless of what happened before

.
At the moment, it seems that the

will likely cover the majority of the costs for a...
takes over the second radio key.
Best regards, Micha.
Then the mechanical opening is disabled.

You can also adjust it.

Or the lock is defective. }