To remove

Fig 1: Illustration For Step 1

Courtesy of SAAB-SCANIA OF AMERICA, INC.

Unplug the connector.
Raise the car and remove the wheel.
Clean the area round the wheel sensor using a soft wire brush.
Undo the wheel sensor retaining bolt and remove the wheel sensor.

Fig 2: Illustration For Step 4-6
Courtesy of SAAB-SCANIA OF AMERICA, INC.
Remove the grommet and withdraw the lead.
Detach the lead from the clips and lift out the sensor.