Could be one of the damper motors. Had the same problem with one on my '99 S70 last year. I got a replacement from the local junk yard. https://www.matthewsvolvosite.com/forums/viewtopic.php?f=1&t=60451 https://www.youtube.com/watch?reload=9&v=MhBzo9TUaBI Do you have access to a VIDA/DICE? T...

Or it could be bad shaft for damper motor that needs zip-tieing.

The damper/servo motor you need to get to is hidden on the RHS of the center section of the dash. To access it you need to remove the glove box liner and then you can drop the lower under dash. You will need a lot of patience and swear words as sell as a magnetic Torx driver to access the 3 small To...

There is a whole separate section in MVS covering just that: https://www.matthewsvolvosite.com/forums/viewforum.php?f=40 Basically it is possible to buy for $150 or less an interface unit (DICE unit) that sits between the OBD2 outlet (where info on the car systems can be read) and a suitably equippe...