T-SB-0047-09 IG1 Relay Freezing

Discussion in 'Toyota Prius Service Bulletins - TSBs' started by Patrick Wong, Jan 13, 2010.

  1. Patrick Wong

    Patrick Wong DIY Enthusiast

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    Alaskans, Canadians, and northern 48 state US owners that face sub-freezing weather, take note.

    2006-2009 Prius: IG1 relay may freeze up when temperature drops below 14 degrees F (-10 degrees C). The symptoms are that multiple warning lights will appear and the car will not shift from P to D. Accessories may not work.

    The solution is to install a new IG1 relay, which has a different part number.
     

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  2. firepa63

    firepa63 Former Prius Owner

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    Good info...
     
  3. usbseawolf2000

    usbseawolf2000 HSD PhD

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    The replacement part retails $65. I am way beyond 36 months / 36k miles coverage.

    I have never gotten multiple warning light nor an issue with shifting from P to D. However, I was unable to press radio related buttons. Even the radio power button did not work. I was able to operate from the steering wheel buttons. After a couple of miles they were all fine.

    I have experience this only once and never since then.
     
  4. Patrick Wong

    Patrick Wong DIY Enthusiast

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    If the problem returned, a short-term solution might be to strike the instrument panel above your left knee (when sitting in the driver's seat) - maybe that will jog IG1 into working! :D
     
  5. usbseawolf2000

    usbseawolf2000 HSD PhD

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    Open the fuse box and hold IG1 with your fingers to warm it up. That should do the trick.
     
  6. Flying White Dutchman

    Flying White Dutchman Senior Member

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  7. dogfriend

    dogfriend Human - Animal Hybrid

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    Or move to a warmer climate. :madgrin: