First you would need to find out what map provider is used by your vehicle for navigation. Is this something built into your car or are you just talking about a navigation app on your phone?

I see you are adding a bunch of addresses to the building, which isn't the best way to go. I'm not aware of routing software that looks for housenumber1..N. I've added a few address points that would be the "more correct" way to map multiple units in a building.

You should also be aware that there can be a huge lag time (weeks) between when you make a change to a map and when that actually shows up on navigation apps.

I feel your pain. I've dealt with housing complexes that had unnecessarily complex routing  issues.
