My S40 cracks like the devil with every load change (left/right movements) of the car. The Volvo workshop has lubricated everything possible and can also do nothing else, except install a new seat, which is very expensive. The WHIPS can no longer work with the silicone part because it has not triggered any more with a car afterwards. I am also not sure if it is only on the WHIPS, because it cracks everywhere – seat front left, front right, back etc. Plastic covers of the seat rails are also not in place and the rails themselves are firmly tightened. I found some used seats on the internet, partly with a few km. Can I, as a “Laie”, remove/change a seat myself? My S40 has no seat heating by the way…is the side airbag with this Volvo in the seat or in the door frame? Anything else I need to consider? Belt lock / belt stretcher? Thank you and best regards Peter