Help with finding a part

[BLACKCDI]

This may be a dumb question. I need a drivers side backrest adjustment knob p# A1248211758 and also drivers side headrest adjustment knob P#A1248211958 . When I try to cross reference P# on fastlane it doesn't match up, their part numbers are different and always start with a W, ******** az is the same. Can anyone tell me the part numbers for those 2 items that I can buy on fastlate or anywhere else?
Something is going on with my epc, it is failing to initialize after 80% loaded.