Just got back from a reputable mechanic who did the diagnostic work on my 1994 Mercedes E320 wagon. It was found that the ABS/asr wheel speed sensor need to be replace on the LEFT Rear of the wagon. My question is since I did not know whether the replacement wheel speed sensor is with traction or without traction. I do have a triangle yellow light hazard shown in the in the upper middle of the speedometer. Does that mean I have traction and if so do I need to replace the wheel speed sensor with traction? Any response or comments is greatly appreciated.