Codes and live data needs to be read. It is possible for the manual valve to be out of line slightly, this would mean the need to adjust the switch. If it drives OK until the lights start to flash then the box should be fairly sound. I have had to recheck this type of fault after a dealer repair. Manual valve first then put switch back to its original position then should be OK. What on earth is a ball blade?
mags
March 2010