Moin, with my 2002er G55 the three warnings ABS, BAS and EDC are constantly shining. Lt friendly diagnostic reading at MB would be the error source “undervoltage” . Further error source is not specified. i.e. it would be necessary a uU elaborate troubleshooting. The remedy in the logbook (lenkers each to the attacks) brings nothing. Does anyone have any idea how to (i.e. someone with compatible diagnostic device) make best progress in the search? Unfortunately, neither Bosch Dien st or other free workshop help because of lack of compatible diagnostic software. Thank you, Kristian