Service indicator questions

[ciaka]

Have an 05 ctt.

I know from manual that there is a service now indicator, and that once lit, 'take it to authorized Porsche dealer for resolution'.

1. Is there a way of displaying how far into the service interval I am ( for example how many miles are on current oil?). Or do I just wait until it comes on?

2. Once lit, how do you reset it without having to go to the dealer? Button sequence or otherwise?

Thank you for your info in advance.

[JFP in PA]

The only way to reset the service indicator is either a PIWIS or Durametric system, nothing else works..............