I have a 2001 ls170 with 1200 hrs that is having a strange electrical problem. Machine worked fine until a week ago, then randomly would not start. Dash lights up, seat belt engaged, as soon as key is turned it makes one click and then all the lights go out. Does not do anything in service mode. Have to wait a few minutes to get back into the machine and lights will come on but same issue. After checking it the next day machine started fine. Used for a few minutes then turned off. Following day same issue? Any thoughts? Battery is new, connections all seem good.