I stopped for a red light, i saw a pop up on the dashboard that read 'brake assist disengaged'. at that point the car shut itself off. i tried to restart with no success, it wouldn't even try to turn over. after sitting in traffic for about three minutes unable to restart the car, i just kept hitting the start / stop button and it finally turned over and started. i reported this incident to the dealership and was told they would work on the car if it happened again! if it happens again it could result in a much worse outcome. i was dead in town traffic, heading straight thru a red light after a complete stop.
I was just driving home on a city street (9/20/18) at about 35 mph when unexpectedly the brakes on my e43 locked up launching myself and my passenger forward against our seat belts. the anti-lock brakes engaged; i heard the rear tires "chatter". the car did not come to a complete stop; the brakes disengaged and we rolled forward. until i realized what happened i though i hit something. there was no one in front of me, but there was someone behind and beside me. i took the car into mercedes and they updated the software and checked the sensors and reported back that everything is working properly. since they did not find anything specific - i feel that the car has a defect that is dangerous to the public and should be recalled until a solution can be demonstrated. the public needs to know about this. others have reported this exact occurence. this is a defect that will result in serious injury - or worse. the car has premium package 3 which includes the active brake assist program. i suspect this was the problem. another person reported this when crossing onto a bridge. that was my specific event also; the car dipped slightly as i went from street pavemen to bridge pavement. please compel mercedes to take responsible action and take steps necessary to protect the public; regardless of how rare the event may be.