[Zyal8r]

For those who wonder. This is an old thread which the OP was able to solve . . Then sjeupie restarted it. He has no emergency latch and gave up until spring. Without battery power he can"t open the trunk to connect it. The underhood terminals won't do anything either. (In the USA there is the emergency latch which would be fine if it could be snagged somehow through the opening between the seats.) Then I probably confused things with my experiments fearing a dead battery while in storage, which I think I solved by running a pull cord back to the emergency latch.
I am still wondering if the electric brake and Park will release without battery power.

Update the manual shows how to release the P Park with a dead battery