7840 sle help please

Burt_100

Member
My 7840 is showing error code 4 on the dash and flashing 6mph, the lift has stopped working and now the gears wont change, there doesnt seam to b any command feombthe ecu to change the gear or move the lift, I got a 40 series manual from ebay but all the diagrams seam to b wrong, has anyone got a copy or could advise what the problem could possibly be?
 
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