brake msg comes on when ignition turned on with sub msg service brakes shop visit.
brake message comes on when ignition is turned on on 2006 Mercedes-Benz E350
your brake pads may be at warning sensors,have an insp done
all the pads are good. reset msg through the computer, msg went out but after driving msg came back.
POSS WIRING ISSUES. WHERE DIDU BUY SENSORS?
that could be your issue