BMW 1 Series 3 Series E81/E87/E88 Rear Wheel ABS Sensor 34526870076, Precise Sensing for Safety Protection

Rear ABS sensor for BMW 1 Series E81/E87/E88 (2004-2013) and some 3 Series models (OEM 34526870076), installed near the rear wheel hub bearing. It monitors wheel speed in real time and transmits precise signals to the ABS control unit to ensure ABS and DSC function properly. If brake pedal feel is spongy or DSC warning light on, sensor signal drift may be the cause. Installation requires lifting the vehicle and removing the rear wheel and brake components; estimated labor 0.5-1 hour; difficulty medium.