Fast hazard lights on turn signal

Discussion in 'Gen 2 Prius Care, Maintenance and Troubleshooting' started by scottlay, Mar 17, 2010.

  1. scottlay

    scottlay New Member

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    I've tried searching, and am sure this is an easy issue.

    I had a tire replaced today and now, whenever I use a turn signal, I get a fast hazard lights indication instead. The hazards (dual signal) are flashing both inside the cabin and outside.

    Ideas?
     
    #1 scottlay, Mar 17, 2010
  2. mad-dog-one

    mad-dog-one Prius Enthusiast

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    Maybe a bad bulb or bad connection to a bulb on that circuit. :rolleyes:
     
    #2 mad-dog-one, Mar 17, 2010
  3. scottlay

    scottlay New Member

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    Thanks mad-dog-one...will check out tomorrow.
     
    #3 scottlay, Mar 17, 2010
  4. hobbit

    hobbit Senior Member

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    Fast blink generally indicates a lamp out. By design.
    .
    _H*
     
    #4 hobbit, Mar 18, 2010
  5. scottlay

    scottlay New Member

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    Re: Fast exterior lights on turn signal

    After looking at it again this morning (in the dark), I realized that it's all exterior lights other than headlamps blinking fast. I don't see any out, and it would seem silly (and hazardous) to replace a turn indicator with all (three brake/turn/etc) lights flashing because one is out.

    Thanks, I'll take another look!
     
    #5 scottlay, Mar 18, 2010
  6. scottlay

    scottlay New Member

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    Little more exploration:

    If headlights are off, and either the right or left turn indicators are on, a normal paced turn indicator is on, although it's on both sides, although the alternate direction side is dimmer than the intended direction of the turn indicator. This is true on both the front and back of the vehicle. Additionally, the top brake light indicator flashes too.

    When the headlights are on, the same thing happens, although the lights flash at a fast pace.

    I'm guessing I need to go to Toyota and not the tire place where this originated...
     
    #6 scottlay, Mar 18, 2010
  7. KK6PD

    KK6PD _ . _ . / _ _ . _

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    You didn't happen to switch the the lamps with LED's, and not replace the flasher module with a LED rated replacement?????
     
    #7 KK6PD, Mar 18, 2010
  8. scottlay

    scottlay New Member

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    Just to wrap this thread. When they were putting the spare tire back in, they knocked loose a ground wire. Simple fix...
     
    #8 scottlay, Mar 18, 2010
    Phil Stasik likes this.
  9. khorvath

    khorvath New Member

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    Hi Scottlay,

    This is my first time participating in a chat but I just had to know how you resolved this issue. I'm experiencing exactly the same problem and I just purchased my used 2006 Prius yesterday. It happened when I test drove but I just thought it was normal until my son noticed that the back looked like Christmas lights every time I use the turn signal. I contacted the sales person after hours and she responded right away. She's going to check with her manager so I'm hoping it's simple (and covered). I love my Prius!!!
     
    #9 khorvath, Nov 28, 2011
  10. dafinn

    dafinn Member

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    Usually when lights other than (or as well as but often dimmer) than the intended lights come on, it usually means a bad or missing ground wire. This is very common in trailer wiring which I am most used to diagnosing.
     
    #10 dafinn, Nov 28, 2011
  11. seven9

    seven9 Junior Member

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    Did you guys ever get this fixed I'm having the same issue with my 13 Prius v

    Posted via the PriusChat mobile app.
     
    #11 seven9, Dec 30, 2016
  12. andrewclaus

    andrewclaus Active Member

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    The advice common to the two problems discussed previously in this old thread is to check ground connections. A Toyota wiring diagram will give the locations of pertinent connections. The spare tire compartment might be a good place to start.
     
    #12 andrewclaus, Dec 30, 2016
  13. k1ngn0thing

    k1ngn0thing Member

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    the solution in my case was the ground near the spare tire
     

    Attached Files:

    #13 k1ngn0thing, Apr 5, 2018
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  14. Phil Stasik

    Phil Stasik Junior Member

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    You guys are so awesome! I have saved so much time and money over the past 9 years with the good advice from this site! My sister took her 2004 Prius (that my wife and I originally bought new) in to the local tire place, and had EXACTLY the same symptoms that scottlay originally posted. The problem was exactly the same. The tire guys dropped the spare in to the storage area sloppily, and broke the turn signal circuit ground wire that is normally crimped onto a washer on the rear side of the tire storage well. It looked EXACTLY like K1ngn0thing's photo. Easy fix. Damn!
     
    #14 Phil Stasik, Aug 4, 2023
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