Mercedes C220 2002 CAN BUS Communication Errors Solution

Finally dear AP members, after months of trying to figure out what was causing my C220 W203 206 MY 2002 Benz's auto transmission to fail, gears not shifting, and when they did would feel big jolt, lights on dash flickering more than a Xmas tree and ESP, ABS, BAS, Temp error, steering sensor N49 faulty, Steering Module fault, IC faulty, you name it, etc happening. Went searching on net probable causes for mainly auto transmission issues with ESP, ABS related issues as they are all interconnected as one fails, the other fails as well, as came across that 722.6 Auto Transmission oil tends to wick its way up the cables into the transmission control module located under front right passenger carpet if left hand drive car, which after lifting car up to inspect leaks due to worn O-rings on connector which in fact there was a leak but fortunately didn't reach the modules. Got cables cleaned with brake and carb cleaner to get rid of the trans oil, and since 190.000kms on the clock got the transmission electrical board, filter, oil and new connector with o-rings replaced, checked and tested solenoids, but problems still there with several DTC's which won't be able to to mention here as they were so many that made it hard for me to locate/diagnose the problem. So after many hours spent reading here and there to try and figure out the cause since dealer only said that it was main ECM (that's always their first diagnosis). Stubborn as I am and since ECM diagnosis and repair is what I do, have put that aside as I knew that it wasn't from that. Sunny days the car ran well while rainy humid days not so well. Battery by coincidence went dead and had new one place in... guess what problem was solved (just for a few weeks as it was just a coincidence and nothing to do with the cause). Car started again acting up last week that I was so p*ssed off that went to parking lot and decided to drift and make donuts with Benz since rear wheel drive and ESP wasn't functioning was ready to destroy transmission that day, but then calmed down and decided to drive back home. This morning decided to look again at transmission connector in search of leaks and oil seeping up the cables which not there.
Got diagnostic tool connected again with same errors but connection with modules were slow in order to get DTC's as there was a resistance in the communication, when P0600 showed up (loss of CAN communication between modules). OK, so we have a new code. Was decided to strip down car and check wiring starting at front left footwell side wall where Interior Can Connector OEM 0025467940 is located and voila mystery solved (check pictures and video for its location) interior can connector was corroded.
So if any of you ever encounter a situation similar to this, check the can connector first.
Since I didn't have a new interior CAN connectors in hand which is not that expensive nor hard to exchange, I just cut the wires and joined them accordingly soldering them for best connection, and placing heat shrink on the wires to get the car working properly.
Hope this long tale helps anybody with same issue.

Link for photos and video attached to help those in need.

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