Moin, a few weeks ago the error first occurred. Warning light for the brake light lit (incl. beeping at every brake – nerve). After the subsequent check everything worked again. A few days ago then the same problem again. But only a few minutes. Today again the warning light for defective light bulb as well as the warning light for the brake light. Both however always occurred only during the braking. With the subsequent check everything went again. Before that I could there nn see behind me on the garage wall that the right brake light didn’t work. Rear light worked. Maybe one of you knows where the error might be?