Vega188

2017 GTI Autobahn 30k mi., got warning to check left turn signal and all bulbs (original) working fine, previously had a warning for reverse light and replaced those and warning light went out. Could this be a glitch, or is it possible that system can tell before the bulb fails completely? I don’t see any way to reset the system although I suppose I could go around and reinstall each bulb or take it a step further and just replace all the bulbs. Anyone else have this happen?