Mercedes: O2 sensor, o2 sensors, sensor light

Question
I owned a 93 190e 2.3 mercedes. How can I get my O2 sensor light to go out. Is there a reset button I can get to. Thanks a lot

Answer
I would need your VIN to be sure, however there should be two O2 sensors on your car, did you replace them both?
A MB compatible scan tool is needed to clear the codes.
The scan tool I use is roughly $2,300.00 USD http://tools.baumtools.com/iscan.jsp
Suggest you take it to a Mercedes specialty shop and have them read and clear the codes.