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brake issue

Discussion in 'Stock 2020 Ford Explorer & Aviator' started by SeattleST, October 13, 2019.

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  1. SeattleST

    SeattleST Elite Explorer

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    Hello all,
    Having the car towed to the dealer Monday for an issue that happened today and want to see if anyone else experienced it.. Was parked on a slight hill today, loaded up my kids, started up (foot on brake obviously) put into gear and the car started rolling,, pushed harder on the brake and nothing happened. It was almost like there was no pressure/boost in the brake pedal (like if you pushed the brake pedal with the car off).. After rolling about 3 or 4 feet the pedal was at the floor and I had as much force as I could on it and it locked up.. Waited 30 seconds and it built up some pressure.. I have no idea what could have caused this but it scared the crap out of me and my kids. Very frustrating as I really want to like this car and with only 1,350 miles, I'm also having them look at the whistling right mirror, suspension knock, the emergency brake engaging on startup sometimes when I never engaged it and almost daily the volume control for the radio gets stuck on "prompt volume".
     
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  3. Rossi6998

    Rossi6998 Elite Explorer

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    The electric parking brake engaging is most likely a safety feature to ensure it works when you want it to. It will probably activate on its own every so often as a self check. I used to own a Corvette and the electric parking brake would activate on its own every 30 days or so.

    Also, the Explorer ST manual states the following;

    The electric parking brake may apply when
    you shift to park (P) without the brake
    pedal fully pressed. The electric parking
    brake applies when you shift to park (P)
    on large slopes. The electric parking brake
    releases with the drive away release
    function or manually as described in the
    Releasing the Electric Parking Brake
    section. See Electric Parking Brake
    (page 207).
     
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  4. blwnsmoke

    blwnsmoke Staff Member Moderator Elite Explorer

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    The brake booster is purely electric. This was one of the "I cant believe Ford did this" features from a tech on one of the ford forums. It is not hydraulic or vacuum like most so I am not sure how the pressure is dealt with being electric.

    Please update us on everything.
     
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  5. SeattleST

    SeattleST Elite Explorer

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    will do. Anxious to find out myself what happened
     
  6. 2020ST

    2020ST New Member

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    Do you have an update on this issue? I experienced the same thing yesterday. Was pulling out of a parking space and the car slowly started rolling back while the brake pedal was pressed when I put the car in reverse. The car did a hard stop from the cross traffic sensor when a car was passing by. Freaked me out a bit. Put it in park and back into reverse and did the same thing except I felt a hard thud from brakes when it finally stopped. Pulled over and restarted the car and things were fine again.
     
  7. peterk9

    peterk9 Staff Member Moderator Elite Explorer

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    ^^ Welcome to the Forum.:wave:
    Hopefully there will be an update posted.

    Peter
     
  8. 2020ST

    2020ST New Member

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    Does anyone else get a hard brake pedal before starting the vehicle some times? I can replicate it if I unlock the car with the keyfob from afar instead of intelligent access. When I press the brake pedal it doesn't move until I hear a mechanical noise, then the brake pedal is normal. Wondering if it is because of the electric booster.
     
    Last edited by a moderator: February 14, 2020 at 11:16 AM
  9. blwnsmoke

    blwnsmoke Staff Member Moderator Elite Explorer

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    I have never noticed it but that makes sense to me.
     

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