Audi A3 A6 S6 RS6 Windows Lifter Master Switch 4B0959851 Master switch for all 4 windows, with child safety lock Reference OEM number: 4B0959851 For Audi A3 First Gen. (1997-2000), Audi A3 First Gen. Facelift (2001-2003), Audi A6 C5 (1998-2001), Audi A6 C5 Facelift (2002-2005), Audi A6 allroad quattro C5 (2000-2005), Audi S6 C5 (1998-2001), Audi S6 C5 Facelift (2002-2005), Audi RS6 C5 (2003-2005)