Same fault happened on my 964 a few times. Rectified by a new battery (as a precaution) and a new neg lead which looked ok but had signs of corrosion given its unshielded.
I was shaking like a shitting dog being stranded when it first happened :what:
Cheap as chips to replace the lead and worth doing for preventative maintenance :thumb:
Wow !
Problem identified at 7.34pm
Problem fixed at 7.49pm
Via a forum!......with exceptional support rather than outright criticism like some other forums... :roll:
Well done Demort :thumb: You get the Medal of Honor this week !
(and a pint if he ever finds you.... :grin: )
My earth lead corroded and everything just went dark, a jump lead to test from battery to good earth point will tell you if it's the earth lead, if it ever does it again.
The symptoms as described are exactly what can happen when a Porsche OE 996/997 battery spontaneously bites the dust. If the battery is over 24 months old and not aftermarket then anything else is quite likely overthinking it. I've had 3 of them do it over the years (which is in fact every Porsche OE battery I've ever owned). They really can just die for no particular reason.