1. Remove the rear door trim (see "Removing and installing the rear door trim").
2. Raise the glass so that you can access the glass frame mounting bolts through the top opening in the door. Remove the two bolts securing the glass frame to the window regulator slider.
3. Lift the glass up with your hands until it stops and secure it with wooden or plastic wedges.
Information taken from the website ladaman
4. Using an 8 mm spanner, unscrew the three nuts securing the gearbox, and using a 10 mm spanner, unscrew the two nuts securing the window regulator guide.
5. Remove the window regulator from the door through the service window.
Note: This is what the rear window lift mechanism looks like when removed from the vehicle.
6. Install the window regulator in the reverse order of removal. After installation, check that the glass closes tightly and without distortion. If this is not the case, loosen the screws securing the glass frame to the slider and adjust it to the desired position using the oval holes in the slider.