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Parking brake on warning buzzer

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by biiqtruckin, Oct 30, 2017.

  1. Oct 30, 2017 #1
    biiqtruckin

    biiqtruckin Bobtail Member

    27
    1
    Sep 20, 2017
    0
    2001 freightliner century buzzer stays on and glitches on and off while the parking brake is disengaged. The buzzer is not heard during start up and heard after driving for a while and parking it and disengaging the air parking brake yellow knob. Why would it tell me that the brake is on when its safely on park? Is it the parking light kick off switch?
     
    biiqtruckin, Oct 30, 2017
    biiqtruckin, Oct 30, 2017
    #1
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  3. Oct 30, 2017 #2
    Frontman

    Frontman Light Load Member

    166
    151
    Apr 4, 2012
    0
    Sounds like it could be the parking brake air switch.
     
    Frontman, Oct 30, 2017
    Frontman, Oct 30, 2017
    #2
    Mike250rs Thanks this.
  4. Nov 1, 2017 #3
    nasriza

    nasriza Road Train Member

    2,397
    2,070
    Feb 1, 2013
    Chicago, IL
    0
    Need parking brake switch. Middle of dash under cup holder manifold mounted right on fire wall
     
    nasriza, Nov 1, 2017
    nasriza, Nov 1, 2017
    #3
  6. Feb 19, 2020 #5
    DIYGUY17

    DIYGUY17 Bobtail Member

    1
    0
    Feb 19, 2020
    0
    I have the same problem. I got two switches from Freightliner and there is a bunch of sensors and can’t tell where they go. I have a 98 century
     
    DIYGUY17, Feb 19, 2020
    DIYGUY17, Feb 19, 2020
    #5
  7. Jul 31, 2020 #6
    OldCarHauler

    OldCarHauler Bobtail Member

    1
    0
    Jul 31, 2020
    0
    Found the culprit on my 2007 Freightliner Century Class. Same problem, Warning light and buzzer that parking brake was still on when rolling fine( other than that annoying buzzer I also located and ripped its little guts out with a Phillips head screw driver half crazed after listening to it for days).
    $11.26 at the dealer for part number FSC/2749-2108 - Pressure switch , located behind panel in front of shifter and under cup holder.... was the one on the black plastic line of the panel on my truck.
     
    OldCarHauler, Jul 31, 2020
    OldCarHauler, Jul 31, 2020
    #6
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