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Left Turn Signal Intermittent

Discussion in 'Prius v Care, Maintenance and Troubleshooting' started by taxibuddy, Mar 23, 2018.

  1. taxibuddy

    taxibuddy Member

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    My left turn signal started working intermittently today. When it works, the left front turn signal, the left rear turn signal, and the dash indicator light all work correctly. When it doesn't work, the left front turn signal, the rear left turn signal, and the dash indicator don't work at all.

    When the problem is happening, I have tried turning on the hazard lights. Only the right side lights flash and only the dash right indicator flashes.

    Any ideas of what could cause this?
     
    #1 taxibuddy, Mar 23, 2018
  2. Elektroingenieur

    Elektroingenieur Senior Member

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    A defective combination meter or, perhaps, an intermittent short to ground on the left turn signal circuit would cause the symptoms you describe.

    See the Turn Signal and Hazard Warning Light diagram in the System Circuit section of the Electrical Wiring Diagram, available by subscription to techinfo.toyota.com.
     
    #2 Elektroingenieur, Mar 24, 2018
  3. Air_Boss

    Air_Boss Senior Member

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    Intermittent contact on the turn signal stalk, or does the 4-way/hazard behavior rule that out?
     
    #3 Air_Boss, Mar 24, 2018
  4. taxibuddy

    taxibuddy Member

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    It doesn't seem likely that the problem is on the input side since there isn't any common wiring between the turn signal switch and the hazard switch that wouldn't also prevent the right side from working.

    What I'd like to do is disconnect the left side output to both indicators to see if the dash light starts working again. Either that or connect the left side indicators to the left side output but unfortunately it's very difficult to get to the wiring. Everything is working ok today so I guess I'll wait until it pops up again.
     
    #4 taxibuddy, Mar 24, 2018
  5. frodoz737

    frodoz737 Top Wrench

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    I only have the 2010 Liftback prints handy, but my guess is the systems are very similar. Good luck.
     

    Attached Files:

    #5 frodoz737, Mar 24, 2018
  6. taxibuddy

    taxibuddy Member

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    Thanks, the v is a little different. I have the corresponding v diagram. It's physical access to the components that's the difficult part.
     
    #6 taxibuddy, Mar 24, 2018
  7. MarkShellhamer

    MarkShellhamer New Member

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    I'm having the same issue but on the right side. Was there a resolution to this issue?
     
    #7 MarkShellhamer, Feb 28, 2019
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