Wheel rpm sensor, location/task - GF42.45-P-4551F

MODEL 463.243 /244 /246 /247 /249 /250 /254 ## as of 127357 as of 1.9.01, 463.270 /271, 463.309 /322 /323 /332 /333 ## as of 127357 as of 1.9.01 with CODE (BB3) Electronic stability program (ESP) 

MODEL 463.248 ## as of 127357 as of 1.9.01 with CODE (BB3) Electronic stability program (ESP) except CODE (979) Special protected version 

Shown on left wheel of front axle 

Fig 1: Identifying Left Front Rpm Sensor

Courtesy of MERCEDES-BENZ USA

	Wheel rpm sensor, location	Front axle The left front rpm sensor (L6/1) and right front rpm sensor (L6/2) are mounted on the steering knuckle of the front axle.
		Rear axle	GF42.45-P-4550-01F
	Wheel rpm sensor, task	The wheel rpm sensor records the speed of the respective wheel and provides an AC voltage signal, whose frequency is proportional to the wheel rpm.