- Oct 10, 2022
my S250 does not have a key. I push the run/enter button the display lights up some relays click and the display powers down. already cleaned all my grounds at the battery and rear frame, cleaned the positive battery post. if I hold down the button for a few seconds i get on the lower left of the screen a logo with B a right arrow D and below the letters the symbol !. not sure if that is some sort of error code. if anyone could help I would greatly appreciate it.