Anti-lock brake fault

[evdesertdjr]

A reoccurring issue with my 2023 XLT Lightning has become more frequent lately. At start up and occasionally while driving a series of messages show on the dashboard: "check brake system", "'service advance track", "1 pedal brake fault", along with a few others dealing with collision assist. And the brakes function differently--soft at the top and locking up at full pressure. Driving the truck for a bit and restarting always clears the issue. it never disappears by restarting without driving several miles. And it never disappears while driving. My Ford app shows the events under "alerts" as "anti-lock brake fault" and has occurred 30 times since July 1--as far back as it records the alerts.

I had the truck to the dealer last spring for the 10k plus check. I showed photos of the messages on the dashboard and described the issue. They drove it for a couple of days but the issue did not show up so the serviceman said there was nothing they could do. This is a fairly high volume Lightning dealer. But it is 100 miles away so I cannot just drive it in when the issue shows up. Seems to me with all the technology today, there should be a better way to check this out. I am planning on bringing the truck in this week and leaving it until something gets resolved.

In searching this site I didn't see much helpful other than one poster with a brake issue that may have involved a broken wire. Anyway, I would appreciate any help on this, or at least suggestions for another avenue with Ford to follow.

Thanks

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[Grumpy2]

Have you confirmed the brake fluid level? Probably far more complex an issue .... sorry


https://www.f150lightningforum.com/forum/threads/brake-fluid-refill.25263/

 

[evdesertdjr]

My app says level is fine and I hope this was checked at the dealer 10k service. But I should check that myself.

thanks

 

[Heliian]

Your dealer should be able to see the codes online. Could be a few things.

 

[WellingtonWorks]

I had very similar symptoms recently which I posted about.

Your best bet would be to read the DTC codes from the OBD port to see what the underlying error code is.

Also there is a TSB recently put out related to the ABS.

 

[RocketGhost]

There's a 100% chance your truck stored trouble codes. They don't always have to reproduce the issue to know what's going on. Sometimes, but not always.

Call your service advisor and ask them if your truck has trouble codes related to braking. Our trucks send all diagnostic information to the cloud. I've seen their screen and it's very detailed what they can see about the truck. If they can see trouble codes for braking, take it back and don't accept the truck until they have repaired it.

If they give you pushback, all you need to say it this: "My brake pedal feels soft and will lock up. I'm getting error messages on the screen regarding the braking system. If I leave and get into an accident because my brakes failed my lawyer will be very interested to hear that you wouldn't repair the brakes and allowed me to leave knowing there is still a problem."

 

[evdesertdjr]

Thanks for the replies. I was surprised when the service department previously said they could not get codes. I will give them the information/thinking from here and hope I get results.

 

[Mal106]

This may not be useful but i had the 12v get low and had the same symptoms. Charged it up and all has been well for the last couple of months.

Also there is a current recall on my '25 concerning the ABS.

 

[RLXXI]

This may not be useful but i had the 12v get low and had the same symptoms. Charged it up and all has been well for the last couple of months.

Also there is a current recall on my '25 concerning the ABS.

Got the letter about that for my 25 Flash. They need to reprogram it. I did mine myself via FDRS.

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