I have a 2017 Subaru Outback 3.6L Touring. The car has a quirk in the GPS system. The system shows your location different from where you are driving. It can show you going through a lake at times. The GPS signal antenna comes on at times but she keeps showing movement miles out of the location I am at. And then in a brief second after as much a 1 half hour doing this it corrects itself. This has happened on I 4, The Florida turnpike, major roads like 192 etc. I have used my portable Tom Tom unit and phone GPS. They both work while the in car unit goes crazy. Any help as Subaru keeps looking for codes.