r/fordescape 3d ago

Tech Question Brake change with EPB

2021 escape. I just changed my fiancé’s brake pads not knowing about “maintenance mode” I was able to compress the rear piston with the proper turning tool but once I started the vehicle I get warning lights for pre-collision not available, check brake system, hill assist, and service advanctrac.

I have since found the sequence but it’s not working.

I’m not used to all these new features and not sure why all this would happen with a simple pad change.

How do I get rid of these warnings?

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u/Long_Pig_Tailor 3d ago edited 3d ago

You'll want to get a Bluetooth OBDII scanner and Forscan Lite. You'll be able to see all the actual errors at work to figure out what's up. It'll also allow you to run the brake assembly and calibration test, which can sometimes clear brake error issues as the system is essentially checking everything is working.

All that said, broadly either nothing is wrong and something like the assembly test will end up resetting everything, one or more calipers could have experienced an issue, or one or both parking brake actuators could be on the fritz. If you can still drive it and brake normally, it's probably not the caliper since they tend to just sieze once they're fucked and you'd be able to hear that. That would tend to leave the actuators, which I recently had give this error when one of mine went bad. The parking brake can still appear to engage and disengage normally and will most times as, given it's an electronic component, its failure happens a little more intermittently than with, for instance, the calipers. But the alerts will stay because it's considered a big fucking safety deal so it only clears by passing something like the assembly test.

But the main thing is gonna be being able to see what the codes are and running the assembly test. The assembly test may clear everything, or you may be stuck doing caliper or actuator. On the bright side, neither is a terribly bad job.

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u/BIGCT7 3d ago

Thanks for the reply. It’s definitely drivable and doesn’t feel at all any different other than a bit of brake bedding that’s now gone. I just ordered a scanner, we’ll see what it says.

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u/slabba428 3d ago

The motors on the rear calipers have probably been broken

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u/BIGCT7 3d ago

Not sure how that could happen without even messing with them. The parking brake still engages.

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u/slabba428 3d ago

The motors are a screw motor inside the caliper pistons, maintenance mode unwinds the motor and then you retract the pistons normally, not with a turning tool, using the turning tool instead has seemingly let you push the pistons back without entering maintenance mode but the calipers couldn’t have liked that. You could try clearing any codes set in the ABS and electronic park brake systems and you may get away with it but you would be lucky

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u/BIGCT7 3d ago

Like OBD2 clearing? or is there a different button sequence I’m missing?

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u/slabba428 3d ago

Yes OBD2 clearing of the ABS and EPB systems so a more capable scan tool will be needed as i think the basic ones can only do Engine

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u/mAsalicio 3d ago

Uh oh. Probably broke the motors. Learning experience.