is anyone experiencing movement/vibration in the steering wheel in a 2001 s-type? have been to dealer 4 times and they cannot stabilize the car. Any suggestions.

I suffered from steering wheel vibration for several months on my Porsche. It turned out that my front tires weren't completely round. I had excess material shaved away and that helped. It never ocurred to me that tires could be bad like that until by coincidence we spun the wheels to check for bad wheel rims.

Also you can try to balance your wheels while on the car - works wonders in some cases.