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Plug in a code reader and see if you get any fault codes.
Does your key work the locks now? Does the alarm set when you use remote lock? Does the alarm horn work if you reach through the open window and open the trunk? Do a few things to test the alarm to make sure it is working correctly.
You might have toasted some of the alternator diodes when you jumped it. You said you had it checked so I would suspect something in the alarm system.
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2013 991.1 Carrera S Cab
2004 996 Turbo CAB X50 sold
2003 996 cab 6 speed Sold
1972 RS 3.2 twin plug short stroke crank fire, roll bar, sold
DE instructor since 1985
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