My 2016 TLX would have the GPS Navigation showing me driving miles away in middle of a pasture, definitely not where I really was. I would reset the position and it would work for a while then go back to being off again. SO frustrating. I FIXED it today LOL, you know that owners manual thing that comes with the car. Quote "●Check that the GPS antenna (located in the dashboard) is not blocked. For best reception, remove items from the dashboard, such as radar detectors, mobile phones, or loose articles. ●Metallic tinting or other aftermarket devices can interfere with the GPS". I had a Escort radar detector just left of center on my windshield. I removed it for testing and magically 8 satellites pop up. I have moved it to the center of the windshield and this location does seem to be affecting the GPS antenna any more.