Try this - works for front and rear wipers on the L405 & (dare I say it) Evoke).
Though it only refers to the front wipers, it works the rear wiper at the same time:-
WIPERS SERVICE POSITION
Before changing a front wiper blade, the wiper
arms must be set in the service position as
follows;
Note: The Smart Key must remain in the
vehicle while wiper blades are replaced.
1. Ensure that the ignition is turned off.
2. Turn the ignition on then off again.
3. Immediately push the wiper control down
to start the single wipe operation and turn
on the ignition again.
The wipers will move to their service
position.
4. When the new parts have been fitted, turn
the ignition off. This will return the wipers
to park position.
Good luck.
Pete