Check Brake System - After Market Parts Put On (Like OEM)

Caliii

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I have had aftermarket parts put on which bought from AutoDoc. The check brake system notice has appeared, I have had all four brake discs and pads replaced. Straight after this I have a few errors appear: find errors in image attached. I asked the garage if it's safe to drive on, they have said yes it is safe to drive on. However, I just wanted a second opinion, as everything in the car and the drive as well the braking feels fine. The EPB is also working fine as it should and there is no difference to when I had OEM brake parts on to the ones I have now.

Does anyone here know if it's okay to still drive on these parts regardless of them being aftermarket. thank you
Ford Mustang Mach-E Check Brake System - After Market Parts Put On (Like OEM) IMG_0018
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Those are all soft codes, right?

No warnings on the instrument cluster?

I'd clear them and see if they reappear
 
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Caliii

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Im unsure of whether these are soft codes, I’m not very knowledgeable regarding cars and mechanics, I am trying to learn however every day as much as I can since these faults. I have had them cleared and they have reappeared. The car and everything works fine, however I’m just scared of driving it and randomly the brakes the cut out
 

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I use the term "soft code" to describe a code(s) that you would be completely unaware of without scanning from the OBD port in the vehicle. In other words, the manufacturer doesn't intend for the vehicle occupant to be aware of the code, nor present any alert of any kind displayed on the instrument cluster or center screen.

Most folks would be alarmed to see/know the number of soft codes that are logged by the modern technology laden vehicles they drive.
 

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Just searching for the last code (which will trigger the check brake system warning), this seems to be a common problem (at least happens from time to time) when aftermarket pads are used since it is monitoring the pressure and expected brake performance and probably will disappear after a while when the pads has reached full performance

Do some hard brakes in neutral to break in the pads and disks
 


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Caliii

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This is notice that came up, and then the battery one is something that hasn't come up on my dash. However there is a permanent exclamation mark that shows now. And then the faults that are on the previous message.
Ford Mustang Mach-E Check Brake System - After Market Parts Put On (Like OEM) Screenshot 2025-11-24 at 20.54.54
 
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Caliii

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Just searching for the last code (which will trigger the check brake system warning), this seems to be a common problem (at least happens from time to time) when aftermarket pads are used since it is monitoring the pressure and expected brake performance and probably will disappear after a while when the pads has reached full performance

Do some hard brakes in neutral to break in the pads and disks
This is what im hoping for, and have been pressing down on the brake, which honestly feel absolutely fine to me. This is what has me confused as to why all these brake faults come up but there's little to no difference from the feeling and braking of the OEM parts.
 

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AliRafiee

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I got this after I put aftermarket pads on the car. It cleared up after a couple of hundred miles.
My guess is that the pads are thicker than OEM and sets off the sensor.
 

markboris

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I got this after I put aftermarket pads on the car. It cleared up after a couple of hundred miles.
My guess is that the pads are thicker than OEM and sets off the sensor.
Thanks Ali. Good to know in case I ever wanted to change out the rotors and pads for something much better. 😊
 

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You need to use oem parts only. For some reason the brake system doesn’t like aftermarket parts.
 

Kamuelaflyer

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How are any of you even needing to replace the brakes? Seriously, even in 2pd drive you’re using regenerative braking until you’re really pressing on the pedals.
 

markboris

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How are any of you even needing to replace the brakes? Seriously, even in 2pd drive you’re using regenerative braking until you’re really pressing on the pedals.
I completely agree with you Bill and doubt most of us would need to replace brakes or rotors unless there is a defect somewhere. In my '21 after over 50K miles the brake pads and rotors looked like new.

However, on my performance cars and sometimes daily drivers, I replace the rotors and brake pads with lighter ones to lessen the unsprung weight. Same reason I always replace my wheels with fully forged aluminum ones. On the Mach-E have saved about 8 lbs per corner doing this and plan to get lighter rotors/pads in a few months to lessen the unsprung weight even further. I can deal with the car complaining there is an issue. I'm pretty good at fixing that kind of thing.
 

E90alex

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There’s probably some brake replacement or recalibration procedure that needs to be run.

Brake components have no electronics in them other than the brake pad wear sensor so the car has no way of knowing if it’s OEM or aftermarket.
 

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This is what im hoping for, and have been pressing down on the brake, which honestly feel absolutely fine to me. This is what has me confused as to why all these brake faults come up but there's little to no difference from the feeling and braking of the OEM parts.
Make sure the gear selector is in N so regen is not used.

The system calculates how much pressure it needs to apply for a given brake torque to blend regen and friction so it needs to know the values for brake torque vs brake pressure. New brake disks and pads will have near zero performance and will need a huge amount of pressure to work until the surface has been worn to match between disks and pads.

Just do some controlled hard braking with gear shifter in N, but be aware there could be difference between wheels so do it progressively with more pressure each time.

One more thing.. in these EBB systems there is effectively no connection between the brake pedal and the brakes. The hydraulic is with solenoids redirected to a piston on a spring after self-test. All feedback to the pedal is syntetic made by the electronics and by the spring. Its not like the old systems where the brake booster was pushing the pedal and the ABS solenoids only was used when needed. All the brakes are powered from the brake booster by one pump for each brake. The brake pedal position is read by pressure sensors on the pedal side and brakes 100% is powered by the EBB by electronics.
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