Hello Martin, first change the language. remove the back cover of the steering collum, there's a printcard (display board). change the blue colored switch (rotary switch) to 5, with the + and - button next to the display you can change the language (change the rotary switch back to zero). see what the error message is on the display when you activate the hydrolic levers, so we can go from there. has this model a fingertip control?
Kind regards
marc