Bought a 2014 Navion is a year ago. Love the camper. However this August on a trip the vehicle wouldn't start. After 2 towes,a new e brake and abs brakes because tow truck driver pulled the e brake and didn't remove. Then a new fuel pump they said it was a blown #13 fuse!!!!All ok. However,the vehicle periodically won't start. Put in New #13 fuse and it starts. On my way to Mercedes Benz again this a.m. Any ideas