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Home >> BMW >> 2003 >> 745i >> Repair and Diagnosis >> Brakes >> ANTI-LOCK BRAKES/TRACTION CONTROL SYSTEM - 745i & 745Li (2) >> Operation >> Wheel Pulse (Speed) Sensors

Wheel Pulse (Speed) Sensors

Wheel pulse (speed) sensors are installed at each wheel. Each wheel pulse sensor generates a signal proportional to the speed of a rotating toothed wheel. Wheel pulse sensors relay the signal to the ABS/ASC+T control module, which computes the actual wheel speed. The toothed wheels, which run past the permanently magnetized edge of the speed sensor, are attached to the hub.