Ok, I have a 2016, Viking VI, Ranch Edition with EPS and yesterday I was using the auxiliary port to air up my tires. Everything was going good, until I got to the third tire. I hadn't started my Viking for a month or so, so I thought I would start it. Well, with my tire inflator turned on and running, I turned the key to start it and everything went blank, no lights no nothing! So I thought I must have blown a fuse somewhere so I checked all the fuses in the fuse box. Nothing! I kept looking at things and about 20 mins later, I decided to try to start again, I turned the key on and heard a clicking sound, which I think was the fuel pump. Well, all the lights came on when I turned the key on but when I tried to start it, I get a loud buzzing sound. I thought maybe the battery may be to low but after charging all night, still, the loud buzzing sound! The self diagnosis on the panel says Er-1 d. Any suggestions as to what it could be would be appreciated!