The driver's seat works perfectly, and always has. There are definitely two control units, because Billy Bodger had been there before me too; all the connectors were disconnected from the control unit in the passenger seat! Reconnect everything, and the fault is evident - the motor which raises and lowers the rear of the seat makes a nasty clicking/graunching sound. Set it at what seems a reasonable height, then disconnect the relevant connector -actually the first I tried, the furthest back - and the seat's other functions are fine. I can live with that.
Two small surprises.
Firstly, the seat cushion is held at the front by two 10mm-head sheet metal bolts, not large cross-head screws. I couldn't get a view of the area, and lost some time groping around with screwdrivers, then cross-checking with YouTube, then groping around again, but it came good eventually. Awkward little blighters to get back in, though.
Secondly, though the seat cushion had a connector for the heating element, there was no corresponding connector floating around loose under the seat.
Right, that's the seat sorted, and the central locking. Getting there more and more...
