I'm not sure if there is a particular fuse...but there should be a fuse index in both locations that are mentioned in the owners manual. The fuses in the glovebox should have a printed fuse index when you pull down the door that exposes the fuses...and the rear fuses should have an index on back of the compartment door on the right rear side in the cargo area.
The fuse indexes list the fuses alphabetically, plus illustrates their location within the fuse box, as well as the amperage for each fuse. In this case...look in the "Ps" for some type of mention for PARKING:
If you find there's no fuse for PDC or "parking"....then there's the PDC control module which is on the left side in front of the vehicle's battery which is below the floor panel in the cargo area:
