Brake replacement issue, now nothing turns on

[Maverick_Dave]

If you don't have a scan tool to clear codes then disconnect the battery for an hour and hope for the best.
The battery should also be charged only when disconnected.

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[MaxMav]

Like I said, I got the ignition to stay on long enough to roll up the windows. But my issue is it still won't stay on and I can't go into break maintenance mode. Not sure, detaching the electronic parking brake is a good option as it is fully engaged at this point. Sounds like pulling the battery and detaching the parking brake module is an option, But again, with it fully engaged, not sure I should try it. How do you retract the ebrake module, or am i Ford bound?

unplug the parking brake motor from the harness. Use a 9V battery with jumpers to the terminal spades on the pb motor connector. If the polarity is correct the motor will reverse and back off the piston. If not reverse the leads.

 

[HeyBales]

This

9 volt battery worked for me on a friend's Audi Q7 and some Hondas. No need to mess with service mode, scan tools, etc

And when you do this - do NOT leave the truck on in anyway - since it could attempt to use the electronic brake booster still.
That's the other part of Brake service mode for hybrids - disabling that ability.
EB's don't have that, just the EPB potential.

 

[MaxMav]

yes, and in fact I disconnected both parking brake motor connectors and also disconnected the 12V battery before trying to retract/apply the caliper pistons with thee 9V battery. Sorry I didn't mention this in my initial post.
The brake service mode didn't work on our 2023 XLT hybrid

 

[Marc_in_CT]

Resolved. Had AAA tow to dealer. Apparently I triggered all kinds of error codes and put it in an 'brick' state. And during the process killed the battery that wad on recall anyway. So, New battery and cleared codes revived it. Dealer confirmed brake maintenance mode has been disabled by ford and why i couldn't get it into that mode.
BTW, I was able to remove the power brake modules and wind back the ebrake with battery and connector disconnected.

 

[MaxMav]

glad to hear it worked out for you. Now you know how to service them the next time.

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