Our 2019 Crosstrek started randomly beeping twice when the engine is off, all doors and hood fully closed, and no dashboard indicator lights lighted. I spoke with a service tech at the dealership and he was mystified. Before I take the car in for a service appointment that could take "anywhere from 45 minutes to 4 days", does any of you members have any experience with this problem? It has been going on for about 3 weeks and no other problems occur, it is just annoying and worrying us that something more fundamental may be going wrong. Thanks to all for any help.