2001 gas tank door locked

[Renster]

Just took off the trickle-charger and wanted to remove the orange light for the gas tank. Of course it isn't in the 'quick' manual and I can't seem to find the magic trick with bing/google to release the lock on the gas tank door. It is the first sunny Saturday in months and Porsche Service won't be open until Monday... Can anyone here give me the secret so some driving can take place?

Many thanks in advance, -renster, very tired of snow...