Buy OEM Lexus Part # 6905050170 (69050-50170). Door Lock Actuator Motor (Right, Rear). Door Lock Actuator - Repair or Replace Your Lexus may need a new door lock

LOCK ASSY, REAR DOOR, RH

Fits LS 500

Door Lock Actuator - Repair or Replace
Your Lexus may need a new door lock actuator if your keyless entry doesn't work or your lock button doesn't lock the doors.