S500 esp/bas problem and black out
 

so i have a S500 w220 1999.and i have a problem with warning lights in the display esp/bas.when i start the car it works for a couple off seconds then everything electrical goes out,only main cluster stays on.headlights powerwindows,seats,radio,fan,just shuts off."Cockpit black out" :)
I guess it some kind of safemode ,the car is drivable but without all electrical things.So any ideas?