980H – “SERVICE CODE” but none found. JOYSTICK cal cannot be accessed

Morning gents. I have a rather odd issue regarding on of our units. ( 2010 980H – Ser # CJMS05365 ) and I was wondering if you guys could be of some assistance to us. Here goes: Loss of TILT , LIFT & LIFT CONTROL LEVER calibrations ( Thus, loss of auto kickouts for both ) Unit HAD active codes ( 82 350 13 , 82 351 13 , 82 352 13 ) TILT recalibration performed ( via clicker box ) & code cleared LIFT recalibration performed ( via clicker box ) & code cleared CONTROL LEVER recalibration attempted. - System would not advance past step # 7 : “10_ _03” ( in order to access LEVER calibration, machine needs to be into mode “10_ _05” - When cycling “ clear switch ” , dash will NOT move out of “10_ _03” and into “10_ _05” - When dash cycled back into normal operating setting ( HOUR METER ) it still depicts an “ACTIVE SERVICE CODE” – @ Top RH corner - When accessing CODES TABLE ( “ - 03 - “ ) no codes are present and three dashes are in the screen ( “_ _ _” ) - LIFT control lever was replaced & still cannot access RECALIBRATION screen, as required As of right now, Auto TILT & bucket kick out are working. Auto boom up is NOT & machine depicts “ACTIVE CODE” when none are found. Any assistance with this, would be greatly appreciated. Thank you