If your Sync version is at or below 23187 your service tech may not be able to update your truck using FDRS - repairs on hold

[Mike G]

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Jun 20 2025 Some 2021-2024 Ford and Lincoln vehicles equipped with SYNC 4 may not be able to perform an update to the accessory protocol interface module (APIM).

This may be due to the software in the APIM. Ford Engineering has de-activated the ability to update these SYNC 4 APIM modules and as applicable, the Ford Diagnosis and Repair System (FDRS) will not present an update for the APIM module. Some existing directed repairs may be impacted, check OASIS before attempting any specific TSB repairs and landing pages before attempting any specific FSA repairs. For any vehicles repairs requiring a software update that includes an APIM update in the programming sequence, if the 5-digit product code for the APIM software is equal to or lower than 23187, do not attempt to update affected modules at this time. To determine the 5-digit product code for the APIM software on the vehicle, while the vehicle center display screen is powered up with ignition in run or accessory, go to General Settings > Select About SYNC. Find the 5-digit code, example “ SYNC 4, Software Version: 23187_PRODUCT”.

OASIS message. Assumed to be a temporary condition.....

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[Mike G]

And to add to that.....when I checked FDRS this morning I see that there are GVMS data warnings on not just the APIM, but the rest of the usual 'USB-based update' suspects as well:

Same thing on my Mach-E as well.

 

[MrLoganRoss]

So is the deal that some cars have a hw problem, or that the have a set problem they need to fix?

I guess my question is whether there is a sync sw problem that they need to work out, or that ford is permanently ending software updates.

 

[Mike G]

I guess my question is whether there is a sync sw problem that they need to work out, or that ford is permanently ending software updates.

I wouldn't think this was permanent. I would think it's tied into some problem they've discovered and are working to address.

 

[The Weatherman]

I image @Mike G is correct and that this would effect not just the Lightnings, but all newer model Sync 4 vehicles.

If that turns out to be true, Ford will definitely have to determine a fix.

 

[Mike G]

I image @Mike G is correct and that this would effect not just the Lightnings, but all newer model Sync 4 vehicles.

If that turns out to be true, Ford will definitely have to determine a fix.

It is for all Sync 4 equipped vehicles.

I've got the FDRS laptop connected right now, and after the network scan completed...those GVMS data warnings dropped completely off the display without me doing anything at all.

So that's interesting.

 

[The Weatherman]

That’s probably a good thing.

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