Pacific Coast Highway from Los Angeles to San Francisco - driving time lapse 

If you're heading south it's easier to pull off the road on the ocean side.

The highway as it currently stands in Nov. 2023 is partially closed off after San Simeon, so there is no passage from south to north and vice versa on the highway at this time.That's probably why your navigation system isn't directing you to drive on, since it leads to a dead end essentially.