NEVERMIND - CLP SSM is toast
Does it have to match part number exactly or will any from a SLK work
My pN is 1708000848
I see an 1708000448 with wiring harness on Ebay states for same year vehicles.

I think I got lucky. The side with the CLP/SSM and sensor is dry. The drain hole they used all went to the other side of the boot. At least I hope. Put all the wiring back together and central locking is still not working. I have looked and searched and seen references to testing the CLP/SSM for operation, but no actual procedure. Any help appreciated.
Central locking is not working at all from remote or switch.
Interior lights are working when turned on manually
Fuse 9 is good
Relays are good
lights blink when fob pressed.
Ideas?