Turn off late model SRS Light? Scan Tool?

Please help. I've been purchasing scan tools and returning them because none of them seem to turn off the SRS light in late model Mercedes cars. Can anyone steer me in the right direction of one that will actually work with say a 03' SL500?

Hi,
You've obviously got a Current Fault code, otherwise it will turn off!

You need to get it to the dealer. My SRS light came on cause of a battery change. Only way you can remove the code is to use the star diagonis