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When attaching my Porsche battery tender the unit only operates for about 30 minutes before going into a fault mode.

  • 2016
  • Cayman
4 200
Electrical and Electronic
La Pine, 

When I attach my Porsche battery tender it only operates for about 30 minutes before the power light begins flashing and the battery condition/program lights go out.  This happens regardless of which12v power port I’m connected to.  I have tried to initiate the connection with the ignition in the accessory position and well as when the engine is running, doors open/closed, with the same results. I took the vehicle to my Porsche dealer who told me everything was working correctly.  ?.

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