Brake trailer module fault

[Spiffy]

My dealer performed TSB 24-2116 which applies to only PB trucks with the trailer brake fault error message. It is a software update for the APM, GWM, & TRM modules. I’ll give it a few and see if this TSB actually works.

It will for a while. Then the problem returns. Needs the module replaced. I waited 6 weeks for it to come in.

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[Spiffy]

Even after the dealer replaced the trailer brake module the problem returned last week. That's now three times.
What's the new fix?

 

[Hans Moleman]

Even after the dealer replaced the trailer brake module the problem returned last week. That's now three times.
What's the new fix?

The dealer performed TSB 24-2116 a month ago on mine and it’s still all good.

 

[MNader]

Today I started getting trailer brake module failure. My turn signal blinkers are flashing fast like I have a bulb out. Left or right. Outside my blinkers are working and flashing normal.
I don't have a trailer connected. I have picked up on a few old discussions but Noone bothers to text back if they got it resolved. I hate that! If you find a solution then post it please. Mini rant

I had the same thing happen to me but without the trailer failure message, also the module clicks non stop even without a trailer connected, this started immediately after the last update Sept 17 2025 ITRM-25.A03
The dealership says they don't have a fix and are waiting to hear from Ford techs

 

[Spiffy]

Simply replace the modual.

 

[sony224422]

Is your brake controller factory installed or installed at the dealer? Mine is doing the same thing but dealer installed. Someone else with a dealer installed one is having the same issues as well.

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