Heavy Duty 7P0927807 Rear ABS Wheel Speed Sensor Fit Audi Q7 On the Audi Q7 4L, Porsche Cayenne 92A and VW Touareg 7P5, the wheel-speed sensors are tiny Hall-effect pick-ups pressed into the knuckle — no cable, just a ~57 mm black body with a 2-pin angled plug. When the tip fouls, the sealed plug sweats, or the magnetic encoder ring on the wheel bearing gets a tooth of rust, you get the ABS and ESC lamps, a speedo that hesitates, and a wheel-speed code that clears on scan and