Welcome to the GLA forum. Your question has come up several times through the years. By typing "illuminated star" in our Search box (top center of webpages) you will find threads that address various questions. Here is one that might help:
A forum community dedicated to Mercedes-Benz GLA owners and enthusiasts. Come join the discussion about performance, features, modifications, classifieds, troubleshooting, maintenance, and more for the 250 4MATIC and AMG 45 4MATIC GLA!