Repair Procedures: Removal

Remove the rear wheel and tire.
Tightening Torque:

88.3 ~ 107.9 N.m (9.0 ~ 11.0 kgf.m, 65.1 ~ 79.6 lb-ft)
Remove the rear wheel speed sensor mounting bolt (A).
Tightening Torque:

6.9 ~ 10.8 N.m (0.7 ~ 1.1 kgf.m, 5.1 ~ 8.0 lb-ft)

Fig 1: Identifying Rear Wheel Speed Sensor Mounting Bolt
Courtesy of HYUNDAI MOTOR AMERICA
Remove the rear wheel speed sensor cable mounting bolt.
Remove the rear wheel house trim.
(Refer to: Body - "REAR WHEEL HOUSE TRIM ").
Disconnect the rear wheel speed sensor connector (A), and than remove the rear wheel speed sensor.

Fig 2: Identifying Rear Wheel Speed Sensor Connector
Courtesy of HYUNDAI MOTOR AMERICA
Install in the reverse order of removal.
CAUTION: Install the rear sensor after lubricating the O-Ring of sensor with the assembly fluid (RAREMAX AF-1) When inserting the sensor, take care the O-Ring not to be damaged.