The only "ghetto" method of turning the light out is removing the bulb. If that is not satisfactory for you, you will need to see a dealer or indy mechanic equipped with a scanner that can reset the light. A standard OBDII scanner (the type you would purchase for home use or find at Autozone) won't work.

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08 W251 R350
97 W210 E320
91 W124 300E
86 W126 560SEL
85 W126 380SE Silver
85 W126 380SE Cranberry
79 W123 250
78 W123 280E
75 W114 280