Hello everyone, have had this problem for about 1 month. When I start the car the control lights go off as soon as I go off a bit the two lamps go on again (then the ABS is activated). Not always. Today it was more extreme because it was a bit smooth. I wanted to test the system and went on a side road sometimes full into the blocks. It buzzed briefly and then stopped. Is it perhaps at the relay? Or is there somewhere a mass shortage? The sensors? I feel with the sensors. n defective system insecure with such a giant. Edit: Maybe this is due to a bad battery, which was just a short time ago rather empty because hardly any water was in it. Since then it also starts worse. MfG Bauknecht