[hdprof]

I have a Boxster 2.5 tiptronic from '97. Suddenly the gear indicator leds in the instrument cluster stopped working! They are all dark.
The car drives normal, gear selector shifter works fine, gearbox is shifting fine, manual shifting is fine, kickdown works fine. So i notice no difference in driving and no DTC when i connect to PIWIS.
Is this a known problem?