HELP...My SRS dash light came on ??

What part of the valley are you in?

In my experience, SRS lights on Mercedes' range from less expensive (seat belt buckle sensor) to most expensive (SRS module + dealer programming). The only way to know is to have your car's computer scanned. SRS is an acronym for Supplemental Restraint System which is a fancy way of describing the car's air bags. When the SRS light is on, the airbags are turned off by the computer and will not deploy in a crash. Hope this helps. Thank for your inquiry. david@apexautoaz.com