My 2005 Lexus RX 300 after being involved in a front nearside accident came back from the repairers with a fault on the reversing camera. When reverse is selected the camera screen shows the rear view from the car Minus the parking guide lines, also displayed on the screen is "system not ready". this has been back to Lexus Bristol where they say they cant find a fault everything seems OK when it obliviously isn,t. anyone with any ideas what the fault is? I've done google and looked through the settings diagnostics menu picked the camera setting, it says speed signal ok, coloured in blue, the center steering button is shown in black, and i cant seem to get this to go blue ? and also the max steering angle? how are these set ?? I think they need setting before proceeding to the setting of the parking guide lines in the next section?