SIN BMX

Hi, I have a jap import 06 IS350 with Tom's supercharger IS45, two days ago when I was parking, the power steering just cut off! There is no light on dashboard! I took it to Lexus Reading and they said they cant diagnose the problem and there is nothing they can do! I know some 05,06,07 V6 car been recall about that problem!! I did some research: 1 P/S ECU. 2 P/S Motor. 3 P/S Rack in Pinion. Does anyone know how or where I can fix it? Please.....!