Thanks that makes sense. Batteries are new but alternator light has come on and lights flicker so will test and change alternator.Hi again,sorry that's not right.33 is "battery switched voltage low,below11.5v".not sure exactly where that sends you,battery box I guess....can you put a booster starter charger on it for a bit and start and stop it a few times and see if that cures it,then new batteries if it does...our oldest3185 loses reverse gear if battery terminals are loose but everything else works.sure it's 33....