Actuator has been changed, 4x4 works ok now.
That "resistor" / wear indicator. I looked that from old one... I cannot understand how that "inductor?" can measure wear from the plain cover of the motor (on the inside theres no any holes on metal, what could measure rotation or anything?) . Looks a bit like BS to me.
Ok, if it measures the wear from main socket some funny way, but then what is that two wire additional small socket.