Hello I have a Deere 318D just recently the " hydraulics OFF indicator comes on and loader controls get locked out I replaced the hyd sensor, filter, seat arm sensor to no avail, does anyone have any answers ?
Welcome to HEF Grumpy ! First, post the complete machine serial number. Post a picture of the instrument panel when you get locked out showing both the display and all the lights. If you scroll through the monitor to codes, any there?