TSB 22-2326 : "Moan Noise in the Rear Brakes When Driven in Reverse in Cold Weather or High Humidity"

[Mark S.]

That is what I am getting at. Rotors getting wet are a pretty common occurrence, so, to me, it looks it comes down to materials choice. Either for the rotors, or the friction material in the pads. That then brings me back to the original point of how is it not figured out yet? Barring some extremely odd interaction between the components, I would think it should be fairly easy to identify. I wonder if anyone has simply bought aftermarket rotors? If I am not mistake, I believe I have seen folks in this forum state that replacement pads may eliminate the problem

My explanation wasn't meant as an excuse. I will say, however, that brake noises have plagued auto makers for decades, even for premium brands (google noisy brakes Mercedes/BMW/Porsche). I seem to recall at least one member who was unsuccessful at eliminating the noise by replacing the rear pads.

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[Frosty]

I’ve recently come up with a foolproof way to eliminate the noise when first backing out of the garage for the day.
I simply back the truck into the garage at the end of the day, so I can just pull out the next morning. No backing up, no noise, no problem. I know what you’re thinking; What a dick! But since popular opinion is that no real damage is being done, and over the years I’ve come to consider some disc brake noise as ‘normal’, I ain’t gonna sweat it & let it ruin my Bronco experience. Some day I’ll probably upgrade to better pads & slotted & drilled rotors, but for better brake performance. Noise issues will always be secondary with me. ?

 

[Dude]

https://www.broncosportforum.com/forum/threads/24-2348-moan-noise-in-the-rear-brakes.12472/

 

[V8 Yankee]

I recently replaced my rear rotors and brake pads, swapping the OEM parts with PowerStop ceramic pads and slotted rotors. I also upgraded the OEM caliper bushings with Ford’s new and improved kit. At first, the change seemed effective, but after about a week, the familiar moaning sound returned when reversing—though slightly less pronounced than before.

Living in humid and wet South Florida adds to the issue, affecting not only OEM brakes but also different aftermarket options. I suspect the noise comes from dust buildup, which becomes sticky in the humidity, almost like a light adhesive. As the rotor rotates a few times, it clears away the dust, and the brakes work quietly for the rest of the day.

At this point, I’m not sure there’s a true fix unless there’s a brake material that resists dust buildup better than OEM or ceramic pads. Ceramic-graphite pads might help, but for an occasional morning moan, talking about brakes now, not my wife. I’m not sure the extra cost is worth it. So, I’ve decided to live with it—for the brakes, at least. Good luck, everyone!

 

[Dude]

I recently replaced my rear rotors and brake pads, swapping the OEM parts with PowerStop ceramic pads and slotted rotors. I also upgraded the OEM caliper bushings with Ford’s new and improved kit. At first, the change seemed effective, but after about a week, the familiar moaning sound returned when reversing—though slightly less pronounced than before.

Living in humid and wet South Florida adds to the issue, affecting not only OEM brakes but also different aftermarket options. I suspect the noise comes from dust buildup, which becomes sticky in the humidity, almost like a light adhesive. As the rotor rotates a few times, it clears away the dust, and the brakes work quietly for the rest of the day.

At this point, I’m not sure there’s a true fix unless there’s a brake material that resists dust buildup better than OEM or ceramic pads. Ceramic-graphite pads might help, but for an occasional morning moan, talking about brakes now, not my wife. I’m not sure the extra cost is worth it. So, I’ve decided to live with it—for the brakes, at least. Good luck, everyone!

The October 29 2024 Ford fix is shown here:
https://www.broncosportforum.com/forum/threads/24-2348-moan-noise-in-the-rear-brakes.12472/

Let’s hope it works

 

[DosJotas]

I took the TSB 24-2348 to the dealer Viamar in the Dominican Republic where I bought my 2021 BL from. They ordered the parts and now they tell there is charge since its not cover in the warranty, therefor I cancelled the order. I rather leave with the noise than pay for the dealer here to try to fix it at my cost

 

[DosJotas]

update, the Dealer changed its mind and cover under the warranty the TSB. I got my Bronco Sport a few days later and it seemed to have worked. No more moan noise in the Rear Brakes When Driven in Reverse in Cold Weather or High Humidity.

 

[Mark S.]

update, the Dealer changed its mind and cover under the warranty the TSB. I got my Bronco Sport a few days later and it seemed to have worked. No more moan noise in the Rear Brakes When Driven in Reverse in Cold Weather or High Humidity.

Please keep us updated. Many that have had brake repair competed incident to the recall report the noise returns after some time.

 

[Dude]

The October 29 2024 Ford fix (TSB 24-2348 Moan Noise In The Rear Brakes) is shown here:
https://www.broncosportforum.com/forum/threads/24-2348-moan-noise-in-the-rear-brakes.12472/

I had TSB 24-2348 work done at the dealership 12/5/2024. No rear brake noise since that time but let’s give it a year or so just to make sure.

https://www.broncosportforum.com/forum/threads/24-2348-moan-noise-in-the-rear-brakes.12472/post-211777

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