Hello, for some time now the Navi in the Tourneo (BJ2018 / Sync2) doesn’t do what it should. It started about 3 years ago. Only 1x in the quarter and increased now to about 1x in the month. Problem: When I use the Navi and start the car, it moves the car by 300m to 500m. It reacts quite normally. It’s just as if I continue on the meadow or a few cross roads. After about 15min the marking jumps at once exactly on my location, as if nothing had been. It has not yet occurred (until now) when the Navi is running and I continue after a long break. It does exactly what it is supposed to do. The FFH has not yet been able to limit the problem, whether it is due to the antenna, cabling or the sync. But it has extrapolated, there could be costs for troubleshooting and repair of well over 500,-. Various SD cards have already been tested. This can be excluded as a source of error. Has anyone heard of such a phenomenon?