i have a 2013 platinum f250 that came with sync 2 and i did the upgrade to sync 3 and since then ive had very innacurate navigation so i got a new gps antenna from sync my rides and the issue still persists. sometimes map is accurate for the first few minutes and then it starts to move miles away from where i actually am. i read on here that someone else had a similar problem with a different kind of vehicle due to some asbuilt data or something like that.. Please if anyone has some pointers id love the help i am completely stumped.
SYNC Region: NA
Navigation Variant: Nav
Manufacturer Year: Unknown
Install Type: Unknown
Old SYNC Version: 3.4.23188
New SYNC Version: 3.4.26057
Do you have a error message, if so what is it?
no error messages
Update Method: CyanLabs Manual Method