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 fr…

Where did you get the APIM from and who provided the custom config? This sounds like a bad APIM config and possibly bad antenna placement. How many satellites show in the diagnostic menu?

i got it online somewhere about 6 months ago and cant find the order information but as far as the diagnostics menu is that in the settings on my sync 3 unit?

Post your asbuilt info for the APIM. It’s likely the vehicle info section is incorrect.

[image] Sync 3 retrofit questions CyanLabs Update Support OK, I have been Forscan programing this Sync 3 retrofit now for the last few days and I think I may have it all figured out except for the Nav input while in motion. I’ve tried every combination in the …

i may have messed up and re wrote the data without keeping a backup of it, is there anything i can do now that i re wrote it to my asbuilt that was sync 2?

Nope you’re back to square one. You cannot load a Sync2/MFT config into Sync3, one is based on Windows CE 6.5 and the other is Blackberry QNX Auto

So whats my next step what can i do to fix this mess

I’d start by going to one of the used car sites and finding a 2016 F150 with the same options as yours. Use that VIN on https://www.motorcraftservice.com/Asbuilt/ and download the ASBuilt file for that. Then load ForScan with no saved profile, go to the APIM in ASBuilt mode, chose load from file a…

Innacurate Navigation after Sync 2 to Sync 3 upgrade

Ford SYNC 3 Support CyanLabs Update Support

F150Chief (F150Chief) 15 June 2026 15:51 7

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