On our old fashioned 737 NGs the same is applicable as mentioned by MarkerInbound, except we do not have electric operation in the first place. Harnesses must be working as well as the fore-aft/sideways movement. The rest may be inoperative if "acceptable to the affected crewmember".
Most often used reason to write an aircraft AOG because of flight crew seats is actually the shoulder harness since the locking mechanism sometimes lock up on its own and has to be repaired or replaced by maintenance.