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Cruise control doesn't work

Discussion in 'Gen 2 Prius Main Forum' started by zeron1982, Jan 10, 2019.

  1. zeron1982

    zeron1982 Junior Member

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    I have an issue with my cruise control it doesn't turn on dashboard,
    I used an obd2 live date checked and it doesn't output any functions of it such as cancel reset and so on , i have 2 prius i check to compare the live data and it seems the system for it is completely dead, a lot shops say clock spring, brake switch, I already replaced the cruise control switch didn't work, is there any relay fuse related to the cruise control system? Or if you have encountered a situation where the cruise control is fully dead I would appreciate some ideas , thank in advance.


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    #1 zeron1982, Jan 10, 2019
  2. ChapmanF

    ChapmanF Senior Member

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    Grab your multimeter and test out the clock spring and the brake switch.
     
    #2 ChapmanF, Jan 10, 2019
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  3. JimboPalmer

    JimboPalmer Tsar of all the Rushers

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    Just a note that drove me crazy, CC does not work in B mode.
     
    #3 JimboPalmer, Jan 10, 2019
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  4. bisco

    bisco cookie crumbler

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    maybe an ecu?
     
    #4 bisco, Jan 10, 2019
  5. Skibob

    Skibob Senior Member

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    Does your speedometer work? When the combo meter is going bad this happens.
     
    #5 Skibob, Jan 10, 2019
  6. ChapmanF

    ChapmanF Senior Member

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    The live data shown by your OBD software, is it purporting to show the state of the set/resume/cancel/on/off switch inputs? And it's showing nothing happening when you work the switches?

    That would hint me toward a multimeter and checking, first, the clock spring, and just following along down the circuit if the first checks are ok.
     
    #6 ChapmanF, Jan 10, 2019
  7. JC91006

    JC91006 Senior Member

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    It's either the clock spring or the Brake switch, but you went and replaced the cruise control switch
     
    #7 JC91006, Jan 10, 2019
  8. zeron1982

    zeron1982 Junior Member

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    Yes speedometer and all lights work also all the functions on the drive wheel ac radio and so on brakes lights working properly as well .

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    #8 zeron1982, Jan 10, 2019
  9. ChapmanF

    ChapmanF Senior Member

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    In fairness, a bad cruise control switch would also cause the symptom, so it wasn't ruled out.

    I would have taken the opportunity to ohm out the clock spring at the same time, given that getting to the CC switch is a mini-PITA and the clock spring terminals are right there in plain view when you do.
     
    #9 ChapmanF, Jan 10, 2019
  10. zeron1982

    zeron1982 Junior Member

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    Thank you for your tips and ideas j replaced the clockspring and solved the problem.

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    #10 zeron1982, Jan 22, 2019
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