Scenic 1 Central locking problem

The present situation is as follows. Both the inside switch to lock unlock and the key activates the system. However, only the front passenger door, the hatch door and the petrol flap works. To lock the vehicle you have to manualy lock the two back doors and after trying to lock the vehicle with the key's electronics, you have to finally manualy lock the drivers door with the key in the lock. Fortunately the front passenger door still works with the electronics. Because there is NO way to lock that door manualy (no outside lock in the door). The drivers door mechanism works fine when applying 12 volt directly to the contacts at the door.

My question is now whether the control unit has a relay for each door or is there one common one. My thoughts are to lay extra wires from a working door to a non-working one but i need to be sure that that is not going to blow the whole ECU. Another strange thing is happening.

Cleaning the car with the key in the ignition after a while (+- 30 seconds) there is an automatic locking of the 'working' units (hatch,petrol flap and front passenger door. The car never ever had this happening before (anti HI-jack?).

Questions: Where is the ECU? behind the fuse unit? how do you remove it? Where can a wiring diagram be obtained?

I am 100 mile from the nearest Renault agents and need to see if i could do something myself.

Please help.