Does anyone know why my Sept 2009, Disco 4, TDV6 HSE suddenly lost 2 years on the display showing the car was made in 2011 lol...
i dont mind, maybe its worth more now, if i could just obtain a corresponding V5 )...
in all seriousness though, the car feels different, especially the steering, could it somehow have gotten reset or need resetting?

Try a hard reset, google it, takes minutes to do.

Plus 1

also ensure ur battery / terminals are ok and alternator is charging correctly