Check brake system!

[alohaalex]

I have a 2022 Mustang Mach E premium with 100,000 miles, I recently replaced the four rotors and the four brake pads ( after market slotted/drilled rotors and ceramic pads) and after driving the car for about 50 miles the brake system alert is showing on my dashboard. I reset it and It came back, I took it to the shop and they test it with the computer and it is back again. Any ideas?

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[Gimme_my_MME]

I have a 2022 Mustang Mach E premium with 100,000 miles, I recently replaced the four rotors and the four brake pads ( after market slotted/drilled rotors and ceramic pads) and after driving the car for about 50 miles the brake system alert is showing on my dashboard. I reset it and It came back, I took it to the shop and they test it with the computer and it is back again. Any ideas?

I would suggest you check your brakes

 

[Blue highway]

I would suggest you check your brakes

What? do what is says?... this is crazy talk

 

[stellman]

https://www.macheforum.com/site/thr...oster-and-aftermarket-pads.45845/#post-975323

 

[Mach-Lee]

I recently replaced the four rotors and the four brake pads ( after market slotted/drilled rotors and ceramic pads)

That is probably why. Suggest using OEM brake parts only, aftermarket brake parts have been known to cause issues.

 

[RodHower]

This is a post from August 8th. It gives details on my brake install and things to look for!

The brakes are fine on my 2023, however it's really annoying that the rotors rust after I wash the car or drive through rain. I've used the PowerStop drilled and slotted on the wife's 2017 Trailhawk (2 years ago) and on the front of my 2000 Honda Insight (4 years ago). These rotors show no signs of rust and still look new after driving in all weather conditions in NE Ohio. Plus the drilled and slotted just look cool! I also plan on painting the calipers with high temperature red Rustoleum caliper spray paint.

So this is the procedure I plan on using for the brake change,

Video showing how to activate brake service mode,


Because the MME doesn’t follow the normal rules for getting into and out of brake service mode, here is a plain language version adapted from the tech manual.
First, a couple caveats. You will not be able to enter or exit Brake Service mode if you have any fault codes pertaining to the brakes. These must be cleared with a diagnostic computer first. If you don’t have one, and you have faults, you‘re SOL. Bleeding the brakes also requires a diagnostic computer, so really don’t open the brake line. Caliper pistons can be compressed without needing a brake winding tool. The procedure calls for the ignition to be in the “on” position. I still don’t know if that means “on” as in accessory mode, or on as in “Ready to drive” mode. The tech I spoke with said either would work. But here’s the simple Version:

To enter Brake Service Mode:
1. Car turned “on” and in park.
2. Hold the accelorator down. Do not release until told to.
3. Hold the parking brake switch DOWN. Do not release until told to.
4. Turn the car off.
5. Turn the car “on” within 5 seconds.
6. Release the accelerator pedal and parking brake switch.
7. Get out of car.
8. Slap the side of the car while saying aloud, “Well I’ll be, that guy on the interweb was right.”
9. Enjoy your brake work.

Video showing how to use the AOSK Mach-E Jack pads


AI Notes,
Steps for safely jacking up a Mustang Mach-E:
Locate the jacking points: These are found on the perimeter frame around the battery, marked with arrows on the plastic body panels.
Prepare the jack and stands: Ensure the floor jack is in good working condition. Use jack stands with rubber tops to protect the frame.
Position the jack: Place the jack under the designated jacking point, ensuring the rubber puck is properly positioned to protect the frame.
Lift the vehicle: Raise the car slowly and evenly, ensuring the jack is stable.
Position jack stands: Place the jack stands at the factory locations near the jacking points, ensuring they are stable and properly supporting the vehicle.
Lower the vehicle: Slowly lower the car onto the jack stands, ensuring the car is stable and supported by the stands.
Repeat on the opposite side: Repeat the process on the opposite side of the vehicle.
Inspect the work area: Ensure the ground is stable and clear of any obstructions.

To cancel/escape/leave/or otherwise deactivate Brake Service Mode
1. Car turned “on” and in park.
2. Hold the accelerator down. Do not release until told to.
3. Hold the parking brake switch UP. Do not release until told to.
4. Press the brake pedal down for at least 1 second.
5. Release the brake pedal (continue holding the accelerator and parking brake switch)
6. Turn the car off,
7. Turn the car back “on” within 5 seconds.
8. Release the accelerator and parking brake switch.
9. Get out of car.
10. Clean the greasy finger splotches off the start/stop switch and the parking brake switch. You really should have cleaned your hands before deactivating brake service mode.

Other notes;
The main issue requiring brake service mode is the electric parking brake which engages automatically. If you don’t enter service mode, the parking brake will have the pads hard against the rotor and you won’t be able to get the caliper off to change the pads. Service mode disabled this allowing you to freely remove the caliper, change the pads and rotors if needed, then put it all back together.
Worse than that, you could dummy it up like me, and have a front caliper off when you turn the car on, at which time the car automatically applies the brakes on startup. I blew the piston right out of a front caliper because there was no pads or rotor to stop it. Then it had to go to the dealer to be bled after I got it back together. And it was only sheer luck that the seal didn’t get ruined.

Other notes from the video;
Thanks for the vid. As i understand this only applies for the parking brakes? Should this also be done for the front rotor maintenance?
Just in the rear

Hello, Very good explanation. Very Clear. I just got my mach-e and I am a DIY'er through and through. What is the purpose of this procedure?
What is it actually doing mechanically? Is this required when say replacing brake pads? TIA!

Yep, when replacing the pads you'd put it in maintenance mode first, which will allow you to compress the caliper.

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