ESP to or from

You know them all, the small yellow ESP light in the center console between the two seat heaters. Lt. manual is it standard when the LED is off. I noticed now, however, that I get away badly when starting up. It ratters and the LED with the mud tire flickers in the cockpit. I press ESP button, so actually switched off, I make everything flat at the light start in wet. What can this be and what is “AN” and what is “OFF”? Gruss Moerchen