hi all
I have a Scania 4 series I have a problem with my air seat it does not move when I sit on it but if u press the switch manually it goes up (my head is touching the roof) but it does not settle where it should it goes right back down in the entering cab position I put a new seat switch in but still no good any body help me please !
thanks phil 
its the seat ecu whats u/s under the seat baseyou will see were all the air pipes go in to a little box that’s it… and no it wont swop from the passenger side seat either… if you press the air switch and then when at the height you require press the switch a couple of times quickly it normally works doing that, the ecu for the seat isn’t cheap either for what it is , Daz