After a whole 10 minutes of ownership of my 2003 Cayenne Turbo I inserted my O2 SIM card from my phone.
With the card correctly inserted the PCM claimed no SIM card was inserted, despite trying it a few times and resetting the igniton.
A friend took his O2 SIM card and tried the same, with eactly the same lack of results.
With a Porsche-electronic-gizmos-always-disappoint-and-I-keep-buying-the-cars-anyway shrug I popped the SIM back in my phone only to find it no longer worked - My phone said the same as the PCM. Imagine our fatalistic lack of surprise when my friends SIM was similarly dead.
So, I've ordered replacement SIM cards but I don't want to feed it another one (then I really would feel stupid).
Any other PCM users experienced anything similar?