Brake light comes on at about 65 MPH

Discussion in 'Gen 2 Prius Care, Maintenance and Troubleshooting' started by dspeck, Oct 5, 2013.

  1. dspeck

    dspeck Junior Member

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    I recently purchased a 2005 prius. The brake light ((!)) consistently comes on when the vehicle gets up to 64-67 mph. Powering the car off and back on will turn the brake light off, until I get back up to 64-67 mph again. Is there a speed sensor or something speed related in the brake system that could be triggering the brake light? I believe an ABS sensor may have been changed before I bought the car.

    Thanks in advance for any guidance.

    Dave
     
    #1 dspeck, Oct 5, 2013
  2. Paradox

    Paradox Prius Enthusiast / Moderator
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    Moved from the Prius v forums to the Gen II forums
     
    #2 Paradox, Oct 5, 2013
  3. jdcollins5

    jdcollins5 Senior Member

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    Yes, you have speed sensors (ABS sensor) on each of the four wheels. If one of these is not set correctly it can give you the brake light that you indicate.
     
    #3 jdcollins5, Oct 5, 2013
  4. edthefox5

    edthefox5 Senior Member

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    Its most likely what JD says but please check brake fluid level also. As pads wear fluid goes down. You didn't mention miles but 2005 may have alot.
     
    #4 edthefox5, Oct 5, 2013
  5. uart

    uart Senior Member

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    Yes, check your brake fluid levels.

    Also check that all your tires the same type and similar wear. Make sure there isn't an "odd one out".
     
    #5 uart, Oct 5, 2013
  6. dspeck

    dspeck Junior Member

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    Ok, I will check the tires. Miles is 176,000. Brake fluid is actually a little above the top mark.
     
    #6 dspeck, Oct 6, 2013
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