I have a C200 and the SRS light is on...How do i reset?

You can not reset the SRS system without speciallist equipment.

The light on means there is a fault or something has been disconnected.

Hi this is the secondary restraint system (airbags;seatbelt pretensioners)warning light.If it goes out after 2minutes there is a non critical fault and the system will still be operative but codes should be read and the system cleared at the earliest opportunity.If the light remains on after 2minutes the system may be inopperative and should be repaired urgently there is no reset for this it has to be diagnosed first and then whatever sensor or part is u/s will have to be replaced..hope this helps