2006 LEXUS RX 400H. 3.1L. 6 CYL. AWD. AUTOMATIC. 90,000 MILES. After battery change, when I select reverse gear the display changes to the rear camera but without the green/red guide lines which should appear. Instead 'System not ready' is written across the screen. Is this a known fault that anyone is aware of?. Re: Ranger 3.2 tdci (2013) reverse camera problems. The blue combined with no picture (or lines) means the camera is either disconnected or dead. Take your vehicle back to where you bought/installed the rear-parking camera and let them check it out. Either the camera will be replaced, or the power wire and/or the signal wire needs to be fixed.