1. Disconnect the negative cable from the battery.
2. Remove the wiper arm and its roller nut with washers.
3. Open the tailgate and remove the trim panel (be careful not to break the panel fixing clips).
4. Remove the 2 screws securing the wiper motor. Disconnect the wires from it and remove it (see photo).
5. Spare parts for the rear wiper motor are not available for sale. If it fails, it will have to be replaced, after checking if the malfunction lies in the relay (see photo).
6. Installation of the electric motor of a back screen wiper is made in return sequence.