Don't know if it is "legal" or not, but I got tired of the runaround from the local dealer. And could not order the needed parts as it is a factory replacement part.( warranty issue

)
So I converted to the S4 manual seat belts. You need the plastic trim pices that cover the main belt and the a-pillars for a smooth finish( no track seen

)
Everything bolts directly in and works fine. I am not telling people to do this! I just got tired of the hassle;.
And the dealer MUST fix it. I just don't have the energy to waste on that argument with them.
Dave