In order to change the rear Wiper Motor, you should take the Wiper Arm away from the shaft, then the nut and spacer off the shaft. After that, remove the interior trim panel and disconnect the electrical connector from the controller. Take out the two screws holding the Wiper Motor and uninstall the motor from the car. For installation, locate and mount the Wiper Motor on the vehicle using two screws while aligning the shaft on the tailgate hole and tighten the screws to 6.5 n.m (57 lb in). Replace the electrical connector to the controller, reattach interior trim panel, and return the spacer and nut to the vehicle firmly at 8 n.m (70 lb in). Finally, reattach the arm wiper to your vehicle.