hi. i have an 04 S250 and i'm tryin to run a rotary broom. it has the 14pin plug on it and the hydraulics lines. the broom works fine, but when i try to shift it from side to side. it starts to go for just a second, then stops. the machine beeps at me, and flashed ACD on the instrument panel. then i have nothin. but when i shut the machine down and restart it. the ACD is gone then it does the same exact thing. any help would be greatly appreciated. travis