Hi, looking for some assistance and wiring diagrams if possible.
Main problem is central locking not working to lock by remote or switch in car, using remote the hazards flash three times so system is seeing the remote ok. if i manualy lock by pushing buttons on the doors down, then operating unlock on fob actuates the central locking pump and unlocks the doors.
Also spoiler is up all time and won't lower.
got a few fault codes, one suggests there is a fault with the drivers door lock cylinder switch, but I have stripped this down and there is nothing there.

in RFL module
1101-02 driver cylinder lock switch sense (unlock) short to ground

B1101 Secure SN2 control cable PSE/CL, CF, ATA (i have forgot what module this is in)

in BCM
1117-05 door unlock switch sense ckt open or line short
1101-02 key fob internal failure close/panic button shorted
1494-02 spoiler switch led circuit short to ground or open
1491-01 rear spoiler motor failure runtime error

Could do with some wiring diagrams to do some tests, this car has been elsewhere and had a replace ment BCM and Central locking pump, part of me is thinking that incompatible mercedes parts have been used and don't have the same software for configurations, but apparantly it worked normal for a while??