It would also be useful to signal with a single-color LED:
Gruen ist im Kfz-Bereich eigentlich nur zulaessig, wenn eine Funktion angezeigt wird, die vom Fahrer keinerlei besondere Aktivitaet verlangt. Mit Dauer-Gelb bittet ein System um Aufmerksamkeit. Rot bedeutet Gefahr und unbedingt eine Reaktion des Fahrers. Possible options include:
Constant yellow light: Regeneration required; automatically initiated when a suitable driving cycle is detected.
Flashing yellow (slow, not triggering alarm): Regeneration in progress... '' Please do not disturb!
This was the initial situation. It was deactivated because many people were driving to the workshop due to a WARNING message and fear of damage.
'Any normal person would panic when they see warning lights.'
One person understands, many people react with panic.
