CRUX Radio Replacement Interface for Select '03-'14 Toyota/Scion Vehicles with SWCCRUX Radio Replacement Interface makes upgrading your factory radio in select '03 '14 Toyota and Scion models safe and seamless by preserving steering wheel controls. It serves as a reliable bridge between your new head unit and your vehicles electronics, keeping essential controls intact during the upgrade. Compatibility: Fits select '03 '14 Toyota and Scion vehicles equipped with steering wheel controls (SWC). SWC Retention: Maintains steering wheel