I had similar problems recently: 12 volt battery went almost dead. No alarm activated but the PCM warned for a weak 12 volt battery and then the screen went black. The car was brought to the nearest PC by Porsche Assistance and stayed there for 5 weeks! The dealer could not solve the problem...
Hereby an update on this thread that I started about a month ago. The car is finally repaired. Several modules were replaced and some of the software re-installed. Porsche Germany was directly involved.
Apparently, there was a current loss on the 12v battery of 2.95 amps. That is much too high...
Apparently the problem is not solved with a trickle charger. It is driven regularly. The car is with the OPC since 3 weeks and they completely rely on the Porsche engineers' help in Zuffenhausen. It seems to be a complex software issue that results in unnecessary draining of the 12V battery. No...
I have an ST GTS. MY23
A week ago the PCM announced that the 12v battery was weak and then the screen went black.
I had the car transported to my local PD.
Since a week the car is in the shop. They do not know what the cause is of the problem. So, they contacted Zuffenhausen. They received all...
I have a GTS ST and drove a 4S ST loaner for a month (recalls of the brake hose, heater, software update, etc...).
The difference was very, very noticeable.... .
I was glad to have my GTS back.