An FYI update, after almost 1 1/2 years after having the airbag/SRS light on. The car has been fixed!

Would like to thank the members @zip439 @onehundred80 @chriscat32 @GraphiteGhost for sharing their knowledge.

Problem: Airbag / SRS light constantly lit , airbags not working / undeployable in case they are needed
Diagnosis: No communication with the Airbag control module / Stealership diagnosis: Burnt control module with a fix price of more than 3k $ + labour

Actual fix:

1) Buy a used Bosch airbag control module off E-bay (20-50$)/ salvage yard with spare part number 0018200826 (I was lucky enough to find one pulled from a 3.2 NA in Holland)
2) Find a laptop with a Mercedes program / code reader that can reset SRS codes.
3) Disconnect battery - Dismantle center console (detailed video in Youtube), unplug comm cable from module socket , unscrew 3 bolts and replace the module.
4) Reconnect battery - Connect laptop / code reader and reset code. Done.