My ETS light is on... I purchased a replacement switch, and will install it
upon returning to Acapulco where the vehicle is. I was at a indy here in Houston concerning a matter with another MBZ and I mentioned to him my plan to put the switch in the ML. He stated that even if I did, I still have to have something (I do not recall what exactly) reset.

Does anyone know what this reset is ? Problem is there is no MB dealer in Acapulco, nearest is 230 miles away. There is a BMW dealer, could the needed reset be done by any good shop, or is it a MB only matter.

Advise appreciated.

Guess not. I replaced it and the cockpit warning light went out, cruise
again works... Case closed !