After driving the car for almost 1000 miles, the navigation systems started showing different towns from the one I was, I took the car to the dealer, they change the antenna, and now, it doesn't work at all. Once in a while after driving for half hour or more, gets the right streets, but then it goes "searching satellites" again. After going to the dealer 8 times, still they couldn't fix it. Brand new 2018 car, only 1500 miles, and I can't drive it out of town.

The cigarette/accessory port below the dashboard of my 2021 Honda Civic (4 dr) does not have power. I use this port for my GPS. I have used the accessory port in my other car to confirm that the GPS powers up there. I cannot figure out what fuse in the engine compartment of my Honda Civic is connected to this port, unless I just start pulling out fuses one by one.