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hello s class owner i wanted to see if maybe there is a part number for what im looking for or could be told what it is,not sure if it is the wheel speed sensor or not but i am missing one of them on one rear wheel . (photos added)
three bits of electrical fun operate around the back wheels
ABS wheel speed sensor
Pad wear sensor - one wheel only
At the wheel its a bowden cable but its operated by the EPB an electrical module near the left rear wheel
if the ABS sensor is missing you will be missing two important safety features and should have warning lights