If the dealer left the vehicles out doors in the rain and muck then you may have a ignition key sticking and not shutting off. Lube the ignition switch and it should make a nice clunk sound when you remove the key once it has been turned to the on/run position and back to off. The elements do mess with the electricals on these machines. Found mine was left out on the street in front of the dealership and they didn't pull them in when it rained. Nice!