03-07 LX470, have VGRS (Variable Gear Ratio Steering). This reduce how many turns of steering wheel (steering input) it takes, to go from lock to lock (steering knuckle stop). From ~3 1/2 to ~2 1/2 turns while stopped with engine running. As speed (MPH) increase, so does input it takes to turn. At HWY speed, steering wheel input, is about the same as non VRGS systems. This increased input, is so we don't oversteers at HWY speed.
The steering wheel is electronically centered. We calibrate and center through tech stream during certain repairs. Any time the battery disconnect, VRGS light appears on dash, until driven. It's self calibrates when we drive at ~25 MPH, VRGS flashes and goes off, then we make tures one direction then to other. At this point steering wheel should be centered.
If not center something is wrong. This could be a TRE walking off, align set wrong, issue with VRGS system, etc..
When VGRS not working, steering wheel takes more than 2 1/2 turns, to go from lock to lock while stop engine on.
The sole purpose of VGRS. Is to make maneuvering around city streets and parking easier. So when not working, drives say: "my steering is hard!" It actually the same feel as non VGRS (98-07 Land cruiser or 98-02 LX).
BTW: VGRS light, appears on the dash, during system self check (first few second IG key turned on) as do all dash warning and indicator lights.