Hmmm....I don't think the doorlocks have anything to do with the RSS. Someone at the dealership may just be a crossed wire or (as weird as it sounds) caused a short somewhere. I'm not sure at all, but I don't see why it would do that. Maybe there was a recall about this.

If I'm not mistaken, 2000 (I think) was the first year for the RSS on Excursions, F-250s, and F-350s. Nonetheless, I think there is obviously somekind of quirk in the system somewhere.