[Vwdiesel] Window tinting & SRS warning light

[William J Toensing]

Although this applies to my E300 Mercedes this could apply to any car including VW's. How does one remove window tinting? Some prior owner applied window tenting to my left outside rear view mirror & I don't like it. 
On my 2001 Ford Focus, the airbag warning light stays on. How do I turn it off? I tried with my OBD 2 reader, no codes nor could I remove it with the OBD2 reader. Or, do I just put some black tape over it?
Bill Toensing, Nevada City, CA