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Powertrain Problem ID: 963

Discussion in 'Roadster: Technical' started by tvuolo, Nov 1, 2015.

  1. slcasner

    slcasner Active Member

    Joined:
    Feb 20, 2011
    Messages:
    1,093
    Location:
    Sunnyvale, CA
    As I said in my post #8, the probable cause was a momentary drop in the input voltage causing more current to be drawn to maintain the same power level. There was a firmware update (3.5.17) in May, 2010 to improve the timing loop of the charge algorithm to prevent that behavior. Is it possible that the firmware in your car has not been updated since then? Seems unlikely. I would not expect fuses to fail due to age, though.
     
    • Informative x 1
  2. PV-EV

    PV-EV Member

    Joined:
    Jun 3, 2011
    Messages:
    412
    Location:
    Alaska
    Also, I believe those are Class T fuses which are extremely fast acting. Used for high fault current protection. For anyone else looking for replacements they can be bought online for about $50.
     

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