the front sensors are mounted into the back of steering knuckle, protruding into the spindle. The rear ABS sensor will either be mounted into the differential, or will have the same setup as the front, depending on whether ESP is equipped or not.
Just look for wires going into the steering knuckle. There are only 2, one goes to the brake pad (brake pad wear indicator, only on front brakes), the other is the ABS sensor (also called wheel speed sensor).
Just look for wires going into the steering knuckle. There are only 2, one goes to the brake pad (brake pad wear indicator, only on front brakes), the other is the ABS sensor (also called wheel speed sensor).