2003 international 9400i

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by Kevin Mack, Sep 17, 2019.

  1. Kevin Mack

    Kevin Mack Bobtail Member

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    Sep 17, 2019
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    I step on the brake pedal and no brake lights unless you really stand on it. Can those actuators be cleaned?
     
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  3. Tb0n3

    Tb0n3 Road Train Member

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    I'm fairly certain it's not the kind of thing that can be cleaned.
     
  4. Kevin Mack

    Kevin Mack Bobtail Member

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    Sep 17, 2019
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    It's just a plunger. I just figured since it's on the floor with all the dirt, grime etc that it might help. Thanks
     
  5. TTNJ

    TTNJ Heavy Load Member

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    Plunger usually sticks closed and brakes are on, not the other way around....at least that has been my experience
     
  6. Tb0n3

    Tb0n3 Road Train Member

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    I was referring to the pressure transducer that should turn the lights on. Are you talking about the brakes not actuating or the lights not coming on until you have lots of brake pressure applied?
     
  7. Kevin Mack

    Kevin Mack Bobtail Member

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    Sep 17, 2019
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    I have to almost stand on it to the floor for lights to come. Brakes are activating just fine
     
  8. Tb0n3

    Tb0n3 Road Train Member

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    There should be a plug in device in the system that activates the lights. It should probably be replaced.

    2007 9400 brake light switch adjustment??
     
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  9. devedo

    devedo Light Load Member

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    Your brake light switch is worn out.

    If the brakes and pedal are fuctioning properly then the switch is bad.
     
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